KONICA MINOLTA Confidential 150 2.1.16. Leading edge does not looks nice (hitting mark like peeling) (1) Symptom The hitting mark like peeling occurs at the leading edge of thick paper. ・Leading edge is peeled to downward when the paper reaches to the registration part. ・Especially, it occurs when the leading edge is soft. (2) Cause When the registration rollers reverse to adjust the paper skew, it may damage the leading edge when the thick paper is used. (The symptom may occur in the area up to 110mm to machine front and rear from the machine center.) (3) Solution Set minus value to the [Feed Correction Level] of Expert Adjustment. 1. Change the DIPSW 1-0 from 0 to 1 to show the Expert adjustment in the paper setting. [Service Mode] → [System Setting] →[Software DIPSW Setting] → DIPSW01-0:1 2. [Machine]→[Paper setting]→[Expert Adj.]→[Feed correction Level] Change from 0 (Default) to -1or -2. Note Check the registration correction level after setting minus value to the Feed Correction Level. Because the registration correction level may also decrease. Table of contents When the registration roller reverses to form the loop, the paper is rubbed with the drive roller and the leading edge is damaged. Registration R. Loop R. Normal Rotation Reverse Upside Downside Slightly peeled to downward
KONICA MINOLTA Confidential 151 2.1.17. SRA4S Corner folding at the paper trailing edge, machine rear side (1) Symptom When both side printing on SRA4S size paper, corner folding at machine rear may occur. (2) Cause The corner folding may occur because the positions of paper trailing edge of SRA4S and the steel plate of the decurler roller fit exactly. (3) Solution The Output Curl(Back on Top) change from Auto. 1. Change DipSW1-0 to 1 to display Expert Adj. to Paper Setting. [Service mode]→ [System Setting]→[Software DipSW Setting] 2. [Machine]→[Paper Setting]→[Expert Adj.]→[Output Curl (Back on Top} Change from [Auto] to [0]. If it does not fix, Change [+1] then [+2] while checking improvement on the actual print. Note Reset to [Auto] after use because the Output Curl(Back on Top) is set for each paper type. Table of contents As shown in the figure, the edge of the steel plate holding the roller corresponds with the edge of the SRA4S => Other size is not affected. Folding direction: Downside folding Curl direction and Corner folding Decurler setting: Low Automatic setting: Mid. Steel plate edge Relationship between the paper size and the steel plate edge
KONICA MINOLTA Confidential 152 2.1.18. Pickup jam clearance workflow Introduction Paper status in the tray largely affects paper feed ability such as JAM and skew. From the experience, incorrect paper setting in the tray is one of the major factors causing JAM. Please thoroughly instruct user to set the paper in the tray with the correct procedure. This will reduce jam occurrence. 1. How to set paper correctly to the tray 1.1 How to set paper (basic procedure) i） Set a few sheets of paper to the tray and adjust the side guides with both hands. Note: Adjusting in one-handed, only one side guide moves and another side do not move well. This may result in off-center in the tray. ii） Slide the knob at the side of the tray then close the tray. iii） Open the tray after the lift up plate reaches to the topmost position. When moving side guide, use the both hands as shown in the photo. Sliding the knob (see photo left) at the side of the tray can make adjustment without downing the lift up plate. (After sliding the knob, it is necessary to open and close the tray). This enables to make more precise adjustment of the gap between paper and side guides. After adjustment, return the knob to the original position.
KONICA MINOLTA Confidential 153 iv） Adjust the gaps between the paper and the side guides referring to the following steps 1 through 4. Note: • Especially, to keep slight gap mentioned in 2 is important. Otherwise, JAM (non suction, multi-feed, buckling) occurs. Manual adjustments of side guides 1. Side guide scale: Set the side guides so that the front and rear indicates the same value. * Read the value at the edge of the steel plate. 2. Gap between papers and guides: Keep 0.1 to 0.2mm at each side 3. Fix side guide: Rotate the knob to fix. 4. Check the paper can move smoothly: Slide the paper by hand and confirm that it moves smoothly. If it is caught, JAM may occur (see the figure in below) Reference 3. Rotate the knob to fix. Front Rear 1. Set the side guides. Be sure that the steel plate indicates the same at front and rear scales
KONICA MINOLTA Confidential 154 v） After step iv), return the knob to the original position then set a pile of paper. 2 Gap between paper and guides: 0.1 to 0.2mm. Note: Example of NG state If the gap is not enough, paper is caught by side guides 4 Slide the paper to arrowed direction and confirm smooth movement. Do not touch the side guides since they were already adjusted. Only move the trail edge guide to load paper.
KONICA MINOLTA Confidential 155 2. Matrix to decide jam clearance When a jam occurs, take actions in order of following steps. i) Check the jam code ii) Check the paper status in the tray and whether the paper is set properly referring to “1. How to set paper correctly to the tray”. If the paper is not set correctly, set paper correctly and instruct user how to set. iii) Take corrective actions according to jam code and paper status. Step 1 Step 2 Step 3 Remark Cheek JAM code Check paper status Take corrective action Before taking the individual corrective action, make sure that the paper is set properly in the tray. JAM code Description J-1601 Upper tray Not reaching to suction PS A. Not suctioned Go to 3.2,a) J-1602 Middle tray J-1613 Lower tray J-1801 2nd PFU-Upper tray J-1802 2nd PFU-Middle tray J-1803 2nd PFU-Lower tray J-2001 3rdPFU-Upper tray J-2002 3rd PFU-Middle tray J-2003 3rd PFU-Lower tray J-1646 Upper tray B. Chain feed Go to 3.2,b) J-1647 Middle tray J-1648 Lower tray J-1846 2nd PFU-Upper tray J-1847 2nd PFU-Middle tray J-1848 2nd PFU-Lower tray J-2046 3rdPFU-Upper tray J-2047 3rd PFU-Middle tray J-2048 3rd PFU-Lower tray J-1618 Upper tray Not reaching to exit PS J-1620 Middle tray C. Buckling Go to 3.2,c) J-1622 Lower tray J-1808 2nd PFU-Upper tray J-1810 2 D．Multi-feed Go to 3.2,d) nd PFU-Middle tray J-1812 2nd PFU-Lower tray J-2008 3rdPFU-Upper tray E．Conveyance failure J-2010 3 Go to 3.2,e) rd PFU-Middle tray J-2012 3rd PFU-Lower tray J-1631 Upper tray Not reaching to feed PS J-1632 Middle tray C. Buckling Go to 3.2,c) J-1633 Lower tray J-1821 2nd PFU-Upper tray F．No feed Go to 3.2,f) J-1822 2nd PFU-Middle tray J-1823 2nd PFU-Lower tray J-2021 3rdPFU-Upper tray J-2022 3rd PFU-Middle tray J-2023 3rd PFU-Lower tray
KONICA MINOLTA Confidential 156 J-1610 Multi-feed detection sensor Multi-feed detection J-1849 D. Multi-feed Go to 3.2,d) 2nd PFU Multi-feed detection sensor J-2049 3rd PFU Multi-feed detection sensor Supplement: Details for paper status (Step 2) A. Not suctioned B. Chain feed E. Conveyance failure F. No feed D. Multi-feed C. Buckling D. Multi-feed When the tray is pulled out, all the paper stays bottom of the tray. When the tray is pulled out, the leading edge of the paper stops at around exit roller. Paper is folded at near leading edge. The paper stops at horizontal conveyance section with the paper overlapped state
KONICA MINOLTA Confidential 157 3. Actions to solve jam 3.1 Before starting adjustment i） How to change air blow condition setting ・Adjust the air level from paper setting Press [Paper Setting]→[Tray*]→[Change Set]→[Air Assist] to access air level setting screen ii） How to check paper status Check through the small window which is standard equipment and at the top left of the PFU tray. Check window Window for lighting iii） Paper lead edge normal state ・ Following shows the normal floating state according to the air-level setting for the paper weight. a) 80g/m2 b) 300g/m2 Floating sheets are separated one by one Floating sheets are separated one by one 3.2 Corrective action according to conditions a) Not suctioned a)-1 Humidity is high <Countermeasure 1> ・ Turn on heater (Installation of HT-506 is necessary.) * Especially for coated paper and smooth plain paper * Especially for the 257g/m2 and heavier paper, the symptom is more likely to occur. <Procedure> i) [Utility]-[User Setting]-[System Setting]-[Paper Tray Setting] - [Dehumidify Fan Heater] ii) [Fan Heater Control (Tray**)] = [Auto] (For coated paper) [Compulsory ON] (For Plain paper, Fine paper) PF-704/705 PF-707/707m Floating paper Floating paper
KONICA MINOLTA Confidential 158 a)-2 Insufficient floating Example of insufficient floating The sheet slightly delayed to float <Check points> • Check the paper floating conditions <Countermeasure> • Set [Side Air Level Setting] stronger. • For paperweight 176g/m2 or lighter paper <Procedure> i) Check the air level ・Press [Paper Setting]→[Tray*]→[Air Assist] to access air level setting screen. ・When the [Side Air Level Setting]=9, go to the countermeasure 2 (lock the side-guide) ii) Change the air assist setting for the tray to [Manual] iii) Set [Side Air Level Setting] stronger by every 1 step. <Countermeasure 2> ・ Lock the side guide * For the 177g/m2 or heavier paper <Procedure> ・ Lock the side guide. ・ Lock both front and rear guides.
KONICA MINOLTA Confidential 159 <Countermeasure 3> ・ Remove the flap of the side guide * For 177g/m2 or heavier paper <Procedure> i) Lock the side guide. ii) Remove the flap from front then rear. Before removing front flap After removing the flap Flap * When the guide is locked, the duct opening is narrowed → Separate air speed increase and paper separation performance is enhanced [Before locking side guide] [After locking side guide] * With stronger air and the wider space to separate sheets the more sheets can be separated at a time.
KONICA MINOLTA Confidential 160 iii) Move the upper limit detection position upward * When the lever is set at upper position, sheets of paper before separation ascends. → The lead edge air separate the sheets more effectively. b) Chain-feed b)-1 Humidity is high <Countermeasure> • Turn ON heater (Installation of HT-506 is necessary) * Especially for coated paper and smooth plain paper * Especially, the symptom tends to occur when the paper weight is 257g/m2 or heavier. <Procedure> i) [Utility]-[User Setting]-[System Setting]-[Paper Tray Setting] - [Dehumidify Fan Heater] ii) [Fan Heater Control (Tray**)]=[Auto] (Coated paper) [Compulsively ON] (Plain paper and Fine paper) Lever at upper position Lever at normal position Air hit the lead edge
KONICA MINOLTA Confidential 161 b)-2 Too many sheets are floating • Sheets of paper are floating without separation. • When the belt starts to feed, the next sheet enters to the paper path without being separated. <Countermeasure-1> • Set [Side Air Level Setting]: weaker <Procedure> i) Change the air assist setting for the tray to [Manual] ii) Set [Side air level] weaker by every 1 step. iii) If the countermeasure is not enough, Conduct <Countermeasure-2>, <Countermeasure-3> and <Countermeasure-4>. <Countermeasure 2 > For the size which needs auxiliary guide (140mm or less width) • Set the [Lead Edge Air Level Setting] weaker. *If the Not suctioned JAM occur after setting the [Lead Edge Air Level Setting] weaker, Move the upper limitation detection position upward. Side air level: Strong Side air level: Optimum NG 2nd sheet and/or later is fed further than 1st sheet. (Especially when the paper starts to float) NG 2nd sheet and later are chain fed with 1st sheet. (Especially during paper feed operation.) OK 1st paper and 2nd paper are fed separately one by one.
KONICA MINOLTA Confidential 162 <Procedure> i) Change the air assist setting for the tray to [Manual] ii) Set [Lead Edge Air Setting] weaker by1 level Push up the upper limit detection position change lever * When the lever is set at upper position, sheets of paper before separation ascends. → The lead edge air separate the sheets more effectively. Lead edge air hits the sheets Upper position Normal position
KONICA MINOLTA Confidential 163 <Countermeasure 3 > For the size not using the auxiliary guide (140mm and more width) paper ・Lock the side guide ・Set [Side Air Level Setting] weaker *If the Not suctioned JAM occur after setting the [Lead Edge Air Level Setting] weaker, Move the upper limitation detection position upward. <Procedure> i) Lock the side guide * Lock both front and rear guides. ii) Change the air assist setting for the tray to [Manual] iii) Set [Lead Edge Air] weaker by1 step <Countermeasure 4> Applicable to the size like B5S, A5S (182mm or less width) and 257gsm or heavier paper. ・Lock only the side guide at front ・Set the Lead Edge air/Side Edge Air weaker <Procedure> i) Lock the side guide * Lock only front guides. ii) Change the air assist setting for the tray to [Manual] iii) Set [Lead Edge Air] weaker by1 step * When the guide is locked, the duct opening is narrowed → Separate air speed increase and paper separation performance is enhanced [After locking side guide] [Before locking side guide]
KONICA MINOLTA Confidential 164 <Countermeasure 5> When paper is curly, change the set direction as following image. If the set direction cannot be changed, set paper after reducing the curl. (Ideal is completely flat condition.) b)-3 Symptom occurs on the specific type of paper <Countermeasure-1> Change PFU paper float timing to Delay. [Paper Setting]→[Change Set]→[Expert Adj.]→[PFU Paper Float Timing]→[Delay] c) Buckling c)-1 Lead edge gets ∩-shape curl during floating Floating condition when the lead edge∩ shape curl Floating sheets are declining; Leading edge of the floating sheets is lower than others. <Check point> Check the paper curl direction in the tray <Countermeasure-1> • Set the paper upside down <Countermeasure-2 (If the countermeasure 1 is not enough)> • Set [Lead Edge Air Setting] weaker c)-2 Thin paper lead edge buckling Feed direction Feed direction
KONICA MINOLTA Confidential 165 When the 1st sheet is conveyed, the leading edge of the next sheet is largely curls downward. <Countermeasure> • Set [Lead Edge Air Setting] Weaker <Procedure> i) Change the air assist setting for the tray to [Manual] ii) Change [Lead Edge Air Level Setting] by every 1 step.
KONICA MINOLTA Confidential 166 d) Multi-feed <Symptom 1> JAM sheets (at horizontal conveyance section) are overlapping and the leading edge of the 1st sheet is at the downstream against that of the 2nd sheet. Fig. Multi-feed JAM paper at horizontal conveyance (1st sheet advance further than 2nd sheet) * 1st sheet advances further than 2nd sheet. <Symptom 2> JAM sheets (at horizontal conveyance) overlaps completely and the leading edge position does not change between 1st sheet and the 2nd sheet. Figure．Multi-feed (no difference in lead edge) position * Multi-feed. Overlapping completely without shifting leading edge. <Symptom 3> JAM sheet (at horizontal conveyance section) overlaps and the leading edge of the 1st sheet is at upstream against that of the 2nd sheet. Fig. Multi-feed (1st sheet is at downstream), JAM at horizontal conveyance paper *The leading edge of the 1st sheet is at the upstream of the 2nd sheet 1st sheet 2nd sheet 1st sheet 2nd sheet 1st sheet 2nd sheet
KONICA MINOLTA Confidential 167 <Symptom 4> More than 2 sheets of the papers stop at the feed roller section Fig. Multi-feed (2 sheets or more) feed section JAM paper state d)-1 Humidity is high <Countermeasure> Turn ON heater (Installation of HT-506 is necessary) * Especially for coated paper and smooth surface plain paper d)-2 In case of the Symptom 1 and Symptom 4. →Take the action explained for the b) Chain feed of the same cause. • Sheets of paper are floating without separation. ・Next sheet is not separated when the belt starts to feed and enters to the feed path. <Countermeasure-1> • Set the [Side Air Level Setting] weaker <Procedure> i) Change the air assist setting for the tray to [Manual] ii) Set [Side Air Level Setting] weaker by every 1 level. <Countermeasure 2 > ・Move the upper limitation position upward. ・Set [Lead Edge Air Level Setting] weaker * Applicable to the size which needs auxiliary guide (140mm or less width)
KONICA MINOLTA Confidential 168 <Procedure> i) Move the upper limitation position upward. * When the lever is set at upper position, sheets of paper before separation ascends. →The lead edge air separate the sheets more effectively ii) Change the air assist setting for the tray to [Manual] iii) Set [Lead Edge Air Level Setting] weaker by every 1 step <Countermeasure 3> ・Lock the side guide ・Set the [Lead Edge Air Level Setting] to weaker * For the size which does not need auxiliary guide (140mm or more width) <Procedure> i) Lock the side guide * Lock both side guides at front and rear. Lever at upper position Lever at normal position Lead edge air hits the sheets
KONICA MINOLTA Confidential 169 ii) Change the air assist setting for the tray to [Manual] iii) Set [Lead Edge Air Level Setting] weaker by every 1 step <Countermeasure 4> ・Lock a side guide at machine front. ・Set both of Lead Edge Air Level/Side Air Level weaker. * For the size like B5S, A5S (182mm or less width) and 257gsm or heavier paper. <Procedure> i) Lock the side guide * Lock a side guide at front only. When both sides are locked, thick paper feed failure may occur due to the friction of the paper. *By locking, the duct opening is narrowed →Separate air speed increase and paper separation performance is enhanced * By locking only front side, minimize the increase of friction [Before locking side guide] [After locking side guide] ii) Change the air assist setting for the tray to [Manual]. iii) Set both of the [Lead Edge Air Level Setting]/[Side Air Level Setting] weaker by every 1step. * When the guide is locked, the duct opening is narrowed → Separate air speed increase and paper separation performance is enhanced [Before locking side guide] [After locking side guide]
KONICA MINOLTA Confidential 170 <Countermeasure 5> When paper is curly, change the set direction as following image. If the set direction cannot be changed, set paper after reducing the curl. (Ideal is completely flat condition.) d)-3 For Symptom 2 Insufficient separation Floating sheets are not separated Floating sheets are partly not separated <Check points> • Check the paper floating conditions <Countermeasure> • Side air level: Set stronger. *Applicable for the 176g/m2 or less paper <Procedure> i) Check the air level. ・ Press [Paper Setting]→[Tray*]→[Air Assist] to access air level setting screen ・ When [Side Air Level Setting] is set to 9, go to countermeasure 2 (lock the side guide) ⅱ) Change the air assist setting for the tray to [Manual] ⅲ) Set the [Side air level Setting] stronger by every 1 step. <Countermeasure 2> ・ Lock the side guide. * Applicable to the paper with the 177g/m2 or heavier <Procedure> ・ Lock the side guides ・ Lock both guides at front and rear. Feed direction
KONICA MINOLTA Confidential 171 *By locking, the duct opening is narrowed →Separate air speed increase and paper separation performance is enhanced * By locking only front side, minimize the increase of friction d)-4 Symptom 3 case Sheets floating state at symptom 3 1st sheet is send back to the upstream and sticking <Countermeasure 1> ・Set the lead edge air level weaker. <Procedure> i) Change the air assist setting for the tray to [Manual] ii) Set [Lead Edge Air Setting] weaker by every 1 step. <Countermeasure 2> When paper is curly, change the set direction as following image. If the set direction cannot be changed, set paper after reducing the curl. (Ideal is completely flat condition.) Feed direction
KONICA MINOLTA Confidential 172 e) Conveyance failure e)-1 Leading edge gets ∩-shape curl Leading edge gets ∩-shape curl Floating sheets are declining: Leading edge of the floating sheets is lower than others <Check points> • Check the paper curl direction in the tray <Countermearue-1> • Set the paper upside down <Countermeasure-2 (Countermeasure1 is not enough)> • Lead edge air level: Set weaker <Procedure> i) Change the air assist setting for the tray to [Manual] ii) Set the [Lead Edge Separation] by every 1 step. f) No feed f)-1 When humidity is high <Countermeasure> • Turn ON heater (Installation of HT-506 is necessary) * Especially for coated paper and smooth surface plain paper <Procedure> i) [Utility]-[User Setting]-[System Setting]-[Paper Tray Setting] -[Dehumidify Fan Heater] ii) [Fan Heater Control (Tray**)]＝[Auto] (Coated paper) [Compulsively ON] (Plain, Fine paper) f)-2 Leading edge gets ∩-shape curl Leading edge gets ∩-shape curl Floating sheets are declining; Leading edge of the floating sheets is lower than others.
KONICA MINOLTA Confidential 173 <Check point> • Check the paper curl direction in the tray <Countermeasure-1> • Set the paper upside down <Countermeasure-2 (When countermeasure 1 is not enough) > • Lead edge air level: Set weaker <Procedure> i) Change the air assist setting for the tray to [Manual] ii) Set the [Lead Edge Air Level Setting] weaker by 1 step. Table of contents
KONICA MINOLTA Confidential 174 2.1.19. Jam, Paper damage, Image failure due to conveyance speed difference (1) Symptom Jam, Paper damage (wrinkle/buckling/corner fold/bent/scratch/folding line), image failure (line, jitter, cloudy) occurs on the specific paper. (2) Cause Paper conveyance speed are slightly different depending on paper characteristic/paper weight /environment. The differences affect its paper conveyance condition as following. - Timing of paper reaching and passing through each roller and gate. - Paper behavior/shape. - Loop size - Distance between papers Typical situation of the problem (3) Solution Estimate the cause location based on paper size, jam position, occurrence condition, occurrence status. Then, adjust the speed and timing for estimated part. * Find the optimum setting by changing value step by step in upper or lower direction because the purpose of adjustment is to optimize paper conveyance speed and loop amount. <Lager conveyance speed than other rollers > Upstream: Much loop, Downstream: Little loop <Faster conveyance speed than other rollers> Upstream: Little loop, Downstream: Much loop <Jam (Paper delayed)> Failed to detect paper due to delayed conveyance. Delay Delay Fast Delay Fast Delay Fast <Jam (Paper reached previous one)> Later paper catch up previous paper due to the faster conveyance. <Buckling (Z-folding)> When the loosen paper loop passes the rollers, it is pressed and get folded.. <Scratches (FD)> If the paper loop became bigger, paper surface might hit unexpected location. Then, it would be scratched.
KONICA MINOLTA Confidential 175 * When the problem is not media dependent, it is necessary to adjust following basic setting which is effective for all types of media. [Service]-[Machine Adjustment]-[Printer Adjustment]-[Speed Adjustment] or [Utility]-[Administrator Setting]-[System Setting]-[Expert Adjustment]-[Printer Adjustment]- [Speed Adjustment] * Refer to the "1.2.12 Lines or banding on image due to speed change (shock noise)" to specify the cause location from line location. <Common for all size> Problem Occurrence condition Occurrence location Adjustment for probable cause Item Jam On all condition (Simplex face down/Simplex face up/Duplex) Registration roller and neighboring rollers Registration Speed (c) Out-put de-curler roller and neighboring rollers Out-put De-curler Speed (i) Not occurred on simplex face up Reverse de-curler roller and neighboring rollers Reverse De-curler Speed (f) Reversal output roller and neighboring rollers Reverse Speed (RevExit) (g) ADU reverse roller and neighboring rollers Reverse Speed (ADU) (h) On duplex only (Just on the gate switching) Reverse gate Reverse Gate SW Timing (a) On simplex face down only Around reverse decurler Roller Back on Top Output Timing Adj. (b) Wrinkle /buckling /fold /bent /scratch /folding line On all condition (Simplex face down/Simplex face up/Duplex) Registration roller and neighboring rollers Registration Speed (c) Fusing roller and neighboring rollers Fusing Speed (Front Side) (d) Out-put de-curler roller and neighboring rollers Out-put De-curler Speed (i) Not occurred on simplex face up Reverse de-curler roller and neighboring rollers Reverse De-curler Speed (f) Reversal output roller and neighboring rollers Reverse Speed (RevExit) (g) ADU reverse roller and neighboring rollers Reverse Speed (ADU) (h) On duplex only Fusing roller in front and behind (at printing on side 2) Fusing Speed (Back Side Offset) (e) Wrinkle On simplex face down only Around reverse decurler Roller Back on Top Output Timing Adj. (b) Trail edge area scratch On duplex only (Just on the gate switching) Reverse Gate Reverse Gate SW Timing (a) Image failure (Line /blur) On all condition (Simplex face down/Simplex face up/Duplex) Registration roller and neighboring rollers Registration Speed (c)
KONICA MINOLTA Confidential 176 Fusing roller and neighboring rollers Fusing Speed (Front Side) (d) On duplex only Fusing roller and neighboring rollers (at printing on side 2) Fusing Speed (Back Side Offset) (e) <For banner: Paper length 487.8mm or longer> * In case of paper length is longer than 487.8mm, following adjustment is also effective depending on case. Problem Occurrence condition Occurrence location Adjustment for estimated cause Item Jam On simplex face up or Duplex Between LCT and registration roller LCT Banner Regist. Speed (j) Passing on registration roller Regist. Speed (Banner) (k) Inside RU-518 inside, and RU-518 neighboring rollers RU Speed Adjustment (Banner) (n) Not occurred on simplex face up ADU banner roller and neighboring rollers Banner Reverse Speed1 (l) Wrinkle /buckling /fold /bent /scratch /folding line On simplex face up or Duplex Between LCT and registration roller LCT Banner Regist. Speed (j) During passing on registration roller Regist. Speed (Banner) (k) Inside RU-518 and neighboring RU-518 rollers RU Speed Adjustment (Banner) (n) Not occurred on simplex face up ADU banner roller and neighboring rollers Banner Reverse Speed1 (l) Roller marks from 439mm or later On simplex face up or Duplex Inside RU-518, and RU-518 neighboring rollers RU Speed Adjustment (Banner) (n) Image failure (Line /blur) On simplex face up or Duplex Between LCT and registration roller LCT Banner Regist. Speed (j) After passing registration roller (from paper middle to its end) Regist. Speed (Banner) (k) <For banner: Paper length 697.0mm or longer> * In case of paper length is longer than 697.0mm, following adjustment is also effective depending on case. Problem Occurrence condition Occurrence location Adjustment for estimated cause Item Jam Not occurred on simplex face up Loop roller and neighboring rollers at reversing banner Banner Reverse Speed2 (m) Wrinkle /buckling /fold /bent /scratch /folding line Not occurred on simplex face up Loop roller and neighboring rollers at reversing banner Banner Reverse Speed2 (m) (a) Adjustment of [Reverse Gate SW Timing]
KONICA MINOLTA Confidential 177 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [Reverse Gate SW Timing] in [Machine]→[Paper Setting]→[Change Set]→[Expert Adj.]. Function： Fine adjustment of the reverse exit switch timing in reverse gate. Setting range: -30 to +30 ([-] earlier / [+] later) * In case of jam occurred on the reverse gate, adjust the setting to negative direction by every -10 step. In case of scratching in the trailing edge area of the paper, adjust the setting to positive direction by every +10 step. (b) Adjustment of [Back on Top Output Timing Adj.]. 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [Back on Top Output Timing Adj.] in [Machine]→[Paper Setting]→[Change Set]→ [Expert Adj.]. Function：Fine adjustment of the reverse rotation start timing in the reverse de-curler roller. Setting range: 0 to +10 ([+] earlier) * Check on +10 whether the wrinkle was gone or not. If the adjustment was effective, set +1 and adjust it by every +1 step. * Set the nearest value to 0 as much as possible. Otherwise paper breakage or motor stepping out may occur when the timing is too early. (c) Adjustment of [Registration Speed]. 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [Registration Speed] in [Machine]→[Paper Setting]→[Change Set]→[Expert Adj.]. Function：Fine adjustment of the rotation speed in the registration roller. Setting range: -50 to +50 ([-] slower / [+] faster) * Check on -5 and +5, then adjust the setting in better direction by every 5 steps. * Be careful not to change the value too much. If you change the value too much, it can affect the FD magnification or increase the occurrence of trouble such as too much slack. (d) Adjustment of [Fusing Speed(Front Side)]. 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [Fusing Speed(Front Side)] in [Machine]→[Paper Setting]→[Change Set]→[Expert Adj.]. Function：Fine adjustment of the rotation speed in the fusing roller. (The adjustment affect to the both sides together.) Setting range: -200 to +200 ([-] slower / [+] faster) * Check on -10 and +10, then adjust the setting in better direction by 10 steps. * In case of paper transformation in CD like bent/z fold/folding line, it may be caused that the conveyance amount in the fusing roller is higher than the reverse de-curler or the out-put de-curler. But adjusting [Reverse De-curler Speed] or [Out-put De-curler Speed] at first is recommended because fusing speed adjustment affect image quality a lot. * Refer to "1.2.8 Lines or banding to the main scan direction (CD) due to speed difference between 2nd transfer and fusing" for image failure (CD line, CD band). * Be careful not to change the value too much. If you change the value too much, it can affect the FD magnification or increase the occurrence of trouble such as too much slack. * If jam or trailing edge area scratch is occurred on reverse gate after the adjustment. Adjust [Reverse Gate SW Timing]. Go to (a) (e) Adjustment of [Fusing Speed(Back Side)]. 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [Fusing Speed(Back Side)] in [Machine]→[Paper Setting]→[Change Set]→[Expert Adj.]. Function：Fine adjustment of the rotation speed in the fusing roller for printing on back side. (The adjustment affect to the back side only.) Setting range: -200 to +200 ([-] slower / [+] faster) * Check on -10 and +10, then adjust the setting in better direction gradually.
KONICA MINOLTA Confidential 178 * In case of paper transformation in CD like bent/z fold/folding line, the cause may be that the conveyance amount in the fusing roller is higher than the reverse de-curler or the out-put de-curler. But adjusting [Reverse De-curler Speed] or [Out-put De-curler Speed] at first is recommended because fusing speed adjustment affects image quality a lot. * Refer to "1.2.8 Lines or banding to the main scan direction (CD) due to speed difference between 2nd transfer and fusing" for image failure(CD line, CD band). * Be careful not to change the value too much. If you change the value too much, it can affect the FD magnification or increase the occurrence of trouble such as too much slack. * If jam or trailing edge area scratch is occurred on reverse gate after the adjustment. Adjust [Reverse Gate SW Timing]. Go to (a) (f) Adjustment of [Reverse De-curler Speed]. 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [Reverse De-curler Speed] in [Machine]→[Paper Setting]→[Change Set]→[Expert Adj.]. Function：Fine adjustment of the rotation speed of the reverse de-curler roller. Setting range: -200 to +200 ([-] slower / [+] faster) * Check on -10 and +10, then adjust the setting in better direction by every 10 step. * In case of paper transformation in CD like bent/z fold/folding line occurred on the roller, adjust the setting to positive direction by +10 steps. * Too much adjustment may create paper conveyance speed difference between this roller and neighboring rollers. If the jam position was changed or could not be solved even the adjustment value exceed 100 steps, try once to adjust [Reverse Speed (RevExit)] together. Go to (g) * If trailing edge area scratch is occurred on reverse gate after the adjustment. Adjust [Reverse Gate SW Timing]. Go to (a) (g) Adjustment of [Reverse Speed(RevExit)]. 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [Reverse Speed(RevExit)] in [Machine]→[Paper Setting]→[Change Set]→[Expert Adj.]. Function：Fine adjustment of the rotation speed in the reversal output roller. Setting range: -200 to +200 ([-] slower / [+] faster) * Check on -10 and +10, then adjust the setting in better direction by 10 steps. * In case of paper transformation in CD like bent/z fold/folding line occurred on the roller, adjust the setting to positive direction by every +10 steps. * Too much adjustment may create paper conveyance speed difference between this roller and neighboring rollers. If the jam position was changed or could not be solved even the adjustment value exceed 100 steps, try once to adjust [Reverse De-curler Speed] / [Reverse Speed(ADU)] together. Go to (f) or (h) (h) Adjustment of [Reverse Speed(ADU)]. 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [Reverse Speed(ADU)] in [Machine]→[Paper Setting]→[Change Set]→[Expert Adj.]. Function：Fine adjustment of the rotation speed in the reversal output roller. Setting range: -200 to +200 ([-] slower / [+] faster) * Check on -10 and +10, then adjust the setting in better direction by every 10 step. * In case of paper transformation in CD like bent/z fold/folding line occurred on the roller, adjust the setting to positive direction by every +10 step. * Too much adjustment may create paper conveyance speed difference between this roller and neighboring rollers. If the jam position was changed or could not be solved even the adjustment value exceed 100 steps, try once to adjust [Reverse Speed (RevExit)] together. Go to (g) (i) Adjustment of [Out-put De-curler Speed]. 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [Out-put De-curler Speed] in [Machine]→[Paper Setting]→[Change Set]→[Expert Adj.].
KONICA MINOLTA Confidential 179 Function：Fine adjustment of the rotation speed in the reversal output roller. Setting range: -200 to +200 ([-] slower / [+] faster) * Check on -10 and +10, then adjust the setting in better direction by every 10 step. * In case of paper transformation in CD like bent/z fold/folding line occurred on the roller, adjust the setting to positive direction by every +10 step. (j) Adjustment of [LCT Banner Regist. Speed]. 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [LCT Banner Regist. Speed] in [Machine]→[Paper Setting]→[Change Set]→ [Expert Adj.]. Function：Fine adjustment of the rotation speed in the LU pre-registration roller during banner paper printing. Setting range: -15 to +5 ([-] slower / [+] faster) * Check on -5 and +5, then adjust the setting in better direction by every 5 step. * This adjustment is mainly used for CD line or CD band occurred only on banner paper. If CD line / band is occurred on 104mm/208mm from leading edge or 614mm from trailing edge, adjust the setting to negative direction by every -5 step with checking. (k) Adjustment of [Regist. Speed(Banner)]. 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [Regist. Speed(Banner)] in [Machine]→[Paper Setting]→[Change Set]→[Expert Adj.]. Function：Fine adjustment of the rotation speed in the registration roller during banner paper printing. Setting range: -50 to +50 ([-] slower / [+] faster) * Check on -5 and +5, then adjust the setting in better direction by every 5 step. (l) Adjustment of [Banner Reverse Speed1]. 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [Banner Reverse Speed1] in [Machine]→[Paper Setting]→[Change Set]→[Expert Adj.]. Function：Fine adjustment of the rotation speed in the banner reverse roller. Setting range: -200 to +200 ([-] slower / [+] faster) * Check on -10 and +10, then adjust the setting in better direction by every 10 step. (m) Adjustment of [Banner Reverse Speed2]. 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [Banner Reverse Speed2] in [Machine]→[Paper Setting]→[Change Set]→[Expert Adj.]. Function：Fine adjustment of the rotation speed in the loop roller during banner paper reverse rotation. Setting range: -200 to +200 ([-] slower / [+] faster) * Check on -10 and +10, then adjust the setting in better direction by every 10 step. (n) Adjustment of [RU Speed Adjustment (Banner)]. 1. Change DipSW1-0 from 0(Default) to 1, to display expert adjustment in paper setting. 2. Adjust [RU Speed Adjustment (Banner)] in [Machine]→[Paper Setting]→[Change Set]→ [Expert Adj.]. Function：Fine adjustment of the rotation speed in the RU-518 conveyance roller with respect to the conveyance speed of the main body when banner paper passing on RU-518. Setting range: -100 to +100 ([-] slower / [+] faster) * Check on -5 and +5, then adjust the setting in better direction by every 5 step. * This adjustment is mainly used for roller marks occurred only on banner paper as following figure. If the 2 rollers mark are 26.5mm width and appeared from 439mm or later, adjust the setting to negative direction by -5 steps with checking.
KONICA MINOLTA Confidential 180 Table of contents 439mm or later 26.5mm 49mm 48.6mm
KONICA MINOLTA Confidential 181 2.1.20. J-17xx/3101/3102/3120 caused by paper dust or some foreign materials attached to the feed roller (1) Symptom -J-17** (Paper does not reach to registration sensor or internal feed sensor) -J-3101/J-3102/J-3120 This symptom may occur on printing the thick paper (more than 200gsm) and on printing/after printing the paper with much paper dust. (Especially pay attention for embossed paper and rough paper.) (2) Cause Paper dust accumulates on the paper feed roller and feeding power is reduced. Especially this symptom may occur while printing thick paper if the previous paper is special paper containing much paper dust. (3) Solution Clean each paper feed roller on paper feed unit and on the main body. . If you find a roller with paper dust, check all paper feed rollers in the conveyance path. Table of contents Clean the roller if it is coated with paper dust.
KONICA MINOLTA Confidential 182 2.1.21. Corner folding at the paper leading edge on wide paper (1) Symptom When printing on wide paper, corner folding in downward may occur at the paper leading edge. - It tends to occur on wider size SRA3(width 320mm) or more. - It tends to occur on thin paper less than 128gsm. - It tends to occur if the paper got moistened. (2) Cause Leading edge of paper are caught by fuser exit guide at the front or rear where is the area without separation claw due to the separation air. Paper path The wider the paper width than separation claw, the more the edges front and rear sink. And it tends to sink when the paper stiffness is lower. Separati on claw Guide Plate The wider the paper width is, the easier the paper edges get hitt at guide plate. 330(Max. size)
KONICA MINOLTA Confidential 183 (3) Solution (a) Adjust the fusing separation air level setting. 1. Change the DIPSW 1-0 from 0 to 1 to show the expert adjustment in the paper setting. [Service Mode] → [System Setting] →[Software DIPSW Setting] → DIPSW1-0:1 2. Reduce the air level by [Fusing Separation Air Level Setting] [Machine] → [Paper Setting] → [Change Set] → [Expert Adj.] Recommendation level : 4 NOTE: If the level reduced, paper wrapping jam tends to occur due to weaker separation force. (b) Adjust the fusing temperature setting. 1. Change the DIPSW 1-0 from 0 to 1 to show the expert adjustment in the paper setting. [Service Mode] → [System Setting] → [Software DIPSW Setting] → DIPSW1-0:1 2. Reduce the fusing temperature by [Upper Fusing Roller Temperature]. [Machine] → [Paper Setting] → [Change Set] → [Expert Adj.] Reduce the temperature gradually until -10 degrees. (Maximum -20 degrees) To confirm the fixing ability, print 20 sheets of No.69 chart. Check that no poor fusing occurs. NOTE: Toner peel off may occur if the temperature reduces too much. The setting should be adjusted with confirming image quality. Table of contents
KONICA MINOLTA Confidential 184 2.1.22. Wrinkle on thin paper at trailing edge to feed direction (on 180 to 230mm width paper) (1) Symptom Wrinkle in feed direction may appear at the trailing edge of thin paper when the feed tray is PFU. (Thin paper: Coated paper up to 128g/gsm, Uncoated paper: up to 91g/m2) ・The symptom tends to occur when the paper width (in CD direction) is approx. 180mm to 230mm. ・The symptom more often occurs when the bottom tray feeds paper. (2) Cause When the corrugation is formed at the paper feed and if it is kept until the entrance of the PFU registration section, the PFU pre-registration loop may not be formed properly as it is not formed along the conveyance guide. If too much loop is formed, the wrinkle occurs at the registration roller section. (3) Solution 1. Change feed tray When the symptom occurs at the bottom tray, use the upper or middle tray. 2. Reduce the pre-registration loop amount till the wrinkle is reduced. When 2 or 3 feed units are connected, also reduce the pre-registration loop amount at respective connecting part as needed. For example, For Tray 1: Adjust Tray 1. For Tray 6 (2n PFU): Adjust Tray 6 and connecting section of the 1st PFU. A4S (210mm) Feed Direction 20mm inside from the edge Bottom tray path Registration roller Paper feed belt Feed Direction Downstream view Upward curling PF-707m pre-registration Section
KONICA MINOLTA Confidential 185 For Tray 9(3rd PFU): Adjust Tray 9 and connecting section of the 1st PFU and the 2nd PFU. Table of contents
KONICA MINOLTA Confidential 186 2.2 Troubleshooting by using CSRA 2.2.1 J-16xx (CSRA approach) (1) Symptom J-16xx occurs. (2) Cause There are plural probable causes. List up the probable causes using the CSRA. (3) Solution The CSRA determines the entire state of a machine from the acquired data then displays a list of the probable causes with the solution in the order of higher probability on the PC or mobile screen. Try the solution from the top of the list. When the he symptom is not solved, go to the next item 1. Press the Administrator Call. *[Setup menu] -> [Administrator settings] -> [System linkage] -> [Administrator Call] Note When J-16xx has occurred, please press the [Administrator Call] button within the same day. Otherwise, the JAM information is not sent to CSRA system because JAM information is cleared from the machine after sending the daily report. 2. Access to the following URL of CSRA(CS Remote Analysis) after 5 minutes. (It takes max. 5 minutes for CSRA system to register data.) https://csra.konicaminolta.jp Note * To login the CSRA, you need to enter your User ID and Password. For more information, please refer to TNBT1600039 *
KONICA MINOLTA Confidential 187 PC View Mobile View 3. Select [Troubleshooting] button. PC View Mobile View 4. Select [Sales Office], [Model], [S/No] and [Period] in search items. And press [Apply]. PC View Mobile View
KONICA MINOLTA Confidential 188 5. After checking the date time of the search results, select the trouble that applies from the dropdown list of [Symptom] for troubleshoot and press [Apply]. PC View Mobile View 6. Check the machine status from top priority items indicated by an arrow and select the applicable state from the drop-down list at the right side. (Cause and solution are displayed in the order of a higher probability.) PC View Mobile View 7. Being selected, the next item is displayed. Select the check items in order, check the cause and the countermeasure for the item displayed at the very end and conduct the measure.
KONICA MINOLTA Confidential 189 PC View Mobile View 8. Record the result of the tried solution ・Select the result from the drop-down list of [Interaction Item] below. ・Describe the detail of the measure you applied in the [Description] area. ・After entering, press [Register]. PC View Mobile View Table of contents
KONICA MINOLTA Confidential 190 3. Machine Troubles 3.1 Control 3.1.1. Highlight automatic adjustment does not complete normally after trying several times (1) Symptom Though performing Highlight automatic adjustment, it does not success: Service mode [Machine Adjustment] → [Quality Adjustment] → [Gamma Curve Adjustment] → [Highlight Automatic Adj.]. (2) Cause Some of image cannot be adjusted with Highlight automatic adjustment if it is outside of adjustment range. (3) Solution The maximum number to repeat Highlight automatic adjustment should be 5 times. If the adjustment does not complete normally, perform Highlight adjustment instead. Perform [Highlight Adjustment] only for the screen failed to adjust with the automatic adjustment in 5 screens Table of contents
KONICA MINOLTA Confidential 191 3.1.2. Print job is not accepted while machine indicates dehumidifying (1) Symptom The machine indicates dehumidifying and print job is not accepted for a while. Optional HT-503(PF602m)/HT-506(PF707) is equipped. (2) Cause When dehumidifier heater is installed to the tray to enhance coated paper feeding ability under high humidity environment (humidity is 56% or over), printing is not accepted until the sensor in the tray detects certain temperature with the default setting. For example, even dehumidifying completes once then the tray is pulled out, “dehumidifying” is displayed. (3) Solution Change the setting of DipSW18-4 Print during temperature control by dehumidifier heater from 0: Prohibited → Allowed The machine receive print job even during the warming up of dehumidifier heater. Note • Since dehumidifying operation does not complete, no feed jam of the coated paper under high humidity tends to occur. • Even under high humidity environment, no feed occurs mostly on coated paper. Therefore, dehumidifying is performed only for coated paper. Table of contents
KONICA MINOLTA Confidential 192 3.2.Error code 3.2.1. C-2451, C-2452, C-2453 and C-2454 occur (1) Symptom C-2451, C-2452, C-2453, C-2454 or carrier attachment may occur when performing the Toner Density Sensor Init adjustment at developer replacement and machine setup. (2) Cause The charging corona unit is not installed correctly. The charging corona unit is not installed or half installed. (Charging output OFF) →Since the drum cannot be charged and machine keeps creating solid image, the toner density is largely reduced and SC occurs. -The charging corona unit is half installed. (Charging output ON / Grid output ON) →Since the drum potential is low and machine keeps creating image, the toner density is reduced and SC occurs. -The charging corona unit is half installed. (Charging output ON / Grid output OFF; not fitted firmly) →The drum is abnormally charged and carrier attaches. (3) Solution Please check charging corona’s fitting condition at the machine setup, developing unit / charging corona replacement and cleaning. Firmly set the charging corona unit until it is locked at the upper position. However, be careful so as not to transform with strong push. Table of contents
KONICA MINOLTA Confidential 193 3.2.2. C-3102 ADU wiring connector is disconnected (1) Symptom C-3102 occurs because a connector for ADU wiring (A50UN155/N156) is disconnected. (2) Cause By repeating the pulling out and pushing back the ADU mount, A50UN188 may get tensed too much and is caught by the connector for the A50UN155/N156 wirings. Consequently, it is disconnected and C-3102 may occur. (3) Solution 1. Move the red binding band for the A50UN155/188 to left side by 10 to 20mm (blue area) from the base line as shown in the figure. 2. Seat the A50UN188 connector to rear side and the A50UN155 connector to front side. To see the position easily, remove the wiring protection cover and the process mount cover. [Top view] Left Right Rear side Front side Base line 10mm 20mm A50UN188 A50UN155 Wiring protection cover
KONICA MINOLTA Confidential 194 [Rear view] Note When the red binding band for A50UN155/188 is at the right from the blue area, move the wirings to the arrow indicated direction. When moving the wirings, intermediate conveyance guide plate should be removed. Process mount cover A50UN1 A50UN15 10mm 20mm Base line
KONICA MINOLTA Confidential 195 Table of contents
KONICA MINOLTA Confidential 196 3.2.3. C2455/C2456/C2457/C2458 Toner density abnormality (High density) occur (1) Symptom C-CodeC2455(Y)/C2456(M)/C2457(C)/C2458(K)（Toner high density abnormality） occur. (2) Cause During long-run low coverage print, Toner charge is deteriorated due to lubricant attached to toner. Developer level became deteriorated due to Toner charge deterioration and Toner density sensor judges low after that Toner supplied. It rotates above, Toner density becomes high. After that, Toner high density occurs as Toner density sensor judges high, attached lubricant toner is consumed, Toner charge and Developer level becomes normal. (3) Solution 1．Replace Developer which occurred C-code. 2．Execute toner band creation function(YMCK 5%). By using toner band creation function, the toner is regularly ejected from the developing unit, and fresh toner is supplied. When the less than YMCK 5% coverage is printed continuously, toner band is created on the intermediate transfer belt to keep minimum coverage becomes YMCK 5%. Toner band creation Dip SW Set Default YMCK : 5% 104-0 1 0 104-1 1 0 Side effect: Toner band creation setting reduces the productivity (Reduce by max 10% for A4 conversion) and increases toner consumption at low coverage printing. When the intermediate transfer CL blade count reaches more than half, the cleaning failure may occur. Note To prevent 2nd transfer roller getting toner dirt from toner band, change the DIPSW for 2nd transfer unit pressure release setting. DIPSW103-7 : 1 (Default: 0) Table of contents
KONICA MINOLTA Confidential 197 3.3.Others 3.3.1. Options cannot be recognized. System configuration display without options (1) Symptom If replacing the option unit and the large connector is disconnected immediately after the main power is off, the control board of the option unit may be damaged. If this occurs the operation panel displays the system configuration without the faulty option. (2) Solution Last of all, disconnect the large connector when you detach the option unit. First of all, connect the large connector when you attach the option unit. Table of contents
KONICA MINOLTA Confidential 198 3.3.2. How to eject developer (1) Outline When the developing unit caused image failure occurs, eject the developer using the developer charger, referring to the following procedure. (2) Procedure 1. Remove 2 screws and release the claws (4 positions) on cover 2. Disconnect the connector and hook the wirings to the gear cover. 3. Upside down the unit so that the developer roller comes to the top. Eject the developer 4. Insert the developer charger jig then rotate arrowed direction (clockwise) in the following Hook the wirings Developer charger (coupling D)：A50U3436 Eject the developer Input
KONICA MINOLTA Confidential 199 photo, to drop the developer attaches to the developing roller and around inside the unit. Repeat the step 3. (Never rotate counterclockwise direction.) (3) Other use example Screwdriver can be connected with the developer ejection jig for easier rotation. Table of contents