KONICA MINOLTA Confidential 200 3.3.3. Image shift (1) Symptom Image is off-centered by 5mm to machine front direction. Timing, vertical zoom is extremely out of alignment. (2) Cause (a) Shifting to machine front by 5mm Paper dust etc attaches to the surface of centering sensor and the sensor mis-detects the paper position. Consequently, the registration roller is moved by maximum distance and the image is shifted to front side by 5mm. (b) Lead edge timing or CD-magnification is extremely out of standard Paper dust attaches to the surface of centering sensor and the sensor mis-detects the paper position. Consequently, the margin at the lead edge becomes wider. (3) Solution Clean the centering sensor and lead edge detection sensor to remove the paper dust. Also clean the registration roller, registration roller dust remover and all conveyance rollers. It is to prevent the attachment of the paper dust to the sensors. Feed direction Feed direction Normal 5mm shift to machine front Image shift Feed direction Normal Margin at lead edge becomes wider Image shift Feed direction
KONICA MINOLTA Confidential 201 Table of contents
KONICA MINOLTA Confidential 202 3.3.4. Note for the developing shutter installation work (1) Symptom Following is the important points to fit the shutter to the developing unit at service visit. If it is not installed correctly, the shutter does not close completely and the toner may spill. Make sure to install correctly and check it slides smoothly. (2) Solution How to install developing shutter 1. Remove the tape 2. Clean the toner outlet 3. Attach the spring shutter spring tape spring
KONICA MINOLTA Confidential 203 4. Tilt the shutter aslant then gently press down the seal on the shutter. 5. Return the shutter to horizontal position. Insert the shutter while pressing the spring by the prolusion of the shutter. 6. Open and close the shutter 5 times and check if it slides smoothly. Note In case the shutter does not close, pull out shutter while lifting up the claw, and go back to step 2. Table of contents seal Claw
KONICA MINOLTA Confidential 204 3.3.5. Productivity decrease at first in the morning under low temperature, low humidity (1) Symptom Productivity decreases first in the morning under low temperature and humidity. (Changed from high speed to low speed) (2) Cause C1070 series decreases the speed by one step when the necessary voltage capacity to supply current to the 2nd transfer section is not available. It may occur when turning ON the power switch 1st in the morning under low temperature and low humidity environment + roller count reaches later half. When the machine is in the state, the middle speed is applied for the thin paper printing until starting the next job and productivity decreases. (3) Solution By changing the following DipSW, the speed down can be released. DipSW 5-2 = 0: Speed down depending on the cases (Default) 1: No speed down due to the 2nd transfer output shortage Note The setting does not affect to the mode which decreases speed to keep fusing ability. Depending on the case, color change due to poor transfer may occur. Table of contents
KONICA MINOLTA Confidential 205 3.3.6. Release of productivity down mode for small size print under high temperature (Adjustment of toner band creation cycle for cleaning blade) (1) Symptom When the internal temperature is 35ºC and over and paper width is less than 260mm, the 120mm size toner band (30mm of each color x full length in machine front to rear direction) is created at every approx. 50 pages. So, the productivity is reduced to approx. 97%. (2) Cause Small size print under high internal machine temperature promotes the intermediate transfer cleaning blade wearing. So, toner band is created in shorter interval to prevent too much wearing. (3) Solution When the productivity has the priority over the life of intermediate transfer cleaning blade, the toner band creation cycle can be change. (The cleaning blade wears earlier) DipSW Settings Toner band creation interval can be changed by the following setting. DipSW For A4 width Priority on productivity For high temperature For narrow size paper 20-3 0 1 0 1 20-4 0 0 1 1 1. For A4 size print (Default setting) Toner band creation interval (by the mileage of the belt)(Unit: mm)) Internal temperature Paper width 260mm and Remark over Less than 260mm 35 ºC and over 270,000 13,500 Default setting Less than 35 ºC 270,000 270,000 2. Priority on productivity Internal temperature Paper width 260mm and Remark over Less than 260mm 35 ºC and over 270,000 270,000 Productivity has productivity. Toner band is reduced. However, the early wearing of the CL blade would occur. Less than 35 ºC 270,000 270,000 Note The grayed hatched [For high temperature] and [For narrow size paper] is the very individual action and not described in the service manual. Please understand the content well before using the setting. 3. For high internal temperature (& for wide size) Internal temperature Paper width 260mm and Remark over Less than 260mm 35 ºC and over 13,500 13,500 ・When the temperature increases,
KONICA MINOLTA Confidential 206 Less than 35 ºC 270,000 270,000 the wearing is promoted. ・ When the wide size is printed after continuous print of A4size, CL blade wearing is promoted at the area outside of A4 size. 4. For narrow paper Internal temperature Paper width 260mm and Remark over Less than 260mm 35 ºC and over 270,000 13,500 When the narrow paper is used often and the wide paper is used occasionally, the wearing outside of the paper width may be promoted. Less than 35 ºC 270,000 13,500 Comparison of the productivity (Reference) 1. Comparison with the predecessor model (Default setting) Internal temperature Paper width 260mm and Remark over Less than 260mm C1070 series 100% 100% or 97% Productivity is the same or higher on C1070 series for all conditions than C7000 series C7000 series 100% or 99% 95% 2. Degas productivity by toner band creation cycle Toner band creation cycle Remark 13,500 270,000 Productivity 97% 100% Table of contents
KONICA MINOLTA Confidential 207 3.3.7. ADU MT lever is very hard to release (1) Symptom ADU MT lever is hard to release and lock. Consequently, it is difficult to pull out and push back the ADU MT. (2) Cause The stopper material attached to the main body got deformed and the lock cannot be set and released. (3) Solution Replace the following part. P/No: A50U105000 1. Pull out ADU mount Locked Released
KONICA MINOLTA Confidential 208 2. Remove the stopper part (A50U105000). (Screw x 2pcs) 3. Replace the stopper part. Table of contents Insert the screwdriver from this space. If the work is difficult, remove the ADU MT. Stopper part (A50U105000) Remove 2 screws.
KONICA MINOLTA Confidential 209 3.3.8. Working noise of the tacking fan in the charge control unit (1) Symptom Depending on paper setting, Working noise of the tacking fan in the charge control unit may become loud. (2) Cause Tacking fans cools down paper from the charging control unit to prevent tacking (Sticking of toner and paper or toner and toner) The level of air from the fan is decided by paper type. For some paper type, the tacking fan air level is set high and the fan sounds loud. (3) Solution When the operation noise of the tacking fan is felt too loud, it can be decreased by change setting from auto to weak. Note Following side effect is expected to occur. Tacking (Sticking of toner and paper or toner and toner) may increase. But the effect may be not much when stacking volume is low or/and ambient temperature is low. When a finisher is connected directly to the main body without RU, dehumidification of the conveyance path may not be enough. Consequently, the due condensation may occur at guide plate and may drop on paper. But the effect may be not much when the ambient temperature is not low. Table of contents Select [weak] and reduce the tacking fan air.
KONICA MINOLTA Confidential 210 Side guide unlocked Side guide locked 4. Options 4.1 PF-707 4.1.1. Multi-feed of Plain/Fine paper under high temperature and high humidity (1) Symptom Under high temperature and high humidity environment, when very smooth surface plain paper or fine paper (Smooth finished etc) is fed, the multi-feed occurs. (2) Cause As well as coated paper, when the surface is very smooth and moisture attaches to the surface, paper tends to stick with each other. (3) Solution (1) Set the Dehumidify heater setting to Compulsively ON. [Utility]→[User Setting]→[System Setting]→[Paper Tray Setting]→[Dehumidify Fan Heater Setting]→[Fan Heater Control (Tray**)]→[Compulsively ON] (2) Apply lock to the side guide When the dehumidifying heater is not installed or the fan heater compulsively ON setting is not enough, use the side lock as mentioned below. • Lock the side guide • Lock position is following 2 locations (front and rear) Table of contents
KONICA MINOLTA Confidential 211 4.1.2. PF-707m Wrinkle on paper (1) Symptom When the thin paper (up to 91g/m2) is fed from PF-707m, the wrinkle appears at the trailing edge of the paper. The symptom occurs more often when the Tray 5 (bottom tray) is used and at the 1st page of a job. (Less occurrence from Tray 3 and 4 (top and middle trays)) (2) Cause (a) Wrinkle depressing ability is lowered by the wearing of PFU registration roller. (b) PFU horizontal conveyance roller/1 and 2 gets worn and the speed difference occurs between registration roller. At the Tray 5 (bottom tray), the paper lead edge posture is more unstable than Tray 3 and 4 and the symptom occurs more often and worse. (3) Solution 1. Change tray When the symptom occurs at Tray 5 (bottom tray), use the Tray 3 (top tray) and Tray 4 (middle tray) 2. Change pre-registration loop amount Reduce the setting value of the respective tray's pre-registration loop till the symptom isimproved. 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 5: Adjust Tray 5. For Tray 6 (2nd PFU)]: Adjust Tray 6 and 1st PFU Connecting part. For Tray 9 (3rd PFU)]: Adjust Tray 9, 1st PFU Connecting part and 2nd PFU Connecting part. For MB Bypass tray (PFU+MB+LU): Adjust Bypass and Bypass Connecting Part For LU Tray (PFU+MB+LU): Adjust Tray 6 and Tray 6 Connecting Part. PF-707m Occur at the trailing edge of the paper. (Random position in the CD)
KONICA MINOLTA Confidential 212 Pre-registration Adj. is accessible from following: [Service]→[Machine Adjustment]→[Printer Adjustment]→[Pre-registration Adj.] [Utility/Counter]→[Administrator Setting]→[System Setting]→[Expert Adjustment]→[Printer Adjustment]→[Pre-registration Adj.] 3. Replace PFU registration roller and horizontal conveyance rollers 1/ and /2. Replace all of the 3 rollers as a set. The rough indication of the replacement is around 1 million pages feeding. Table of contents
KONICA MINOLTA Confidential 213 4.1.3. PF-707m Paper skew of small size (1) Symptom When small size is fed (the auxiliary guide applied size), paper skew becomes larger. (2) Cause In case the auxiliary paper guide is used, when the air blows, the paper gets on the gap between belt unit and auxiliary guide. (3) Solution Insert the PET sheet to block the gap between belt unit and auxiliary paper guide. Attach the PET sheet referring to the following procedure. - PET sheet attachment procedure - 1. Remove the small cover. Pull out the tray to modify and remove the front cover (2 screws) 2. Remove the auxiliary lift up plate (one each at front and rear) Remove the auxiliary lift up plate, one each at front and rear (one screw each) Small cover Remove the auxiliary lift up plates.
KONICA MINOLTA Confidential 214 3. Temporarily fix the PET(190x20(mm)). Be sure to attach the PET sheet to the auxiliary guide at machine rear first. Pull out the auxiliary guide machine rear. Peel off the release sheet of the PET and temporary attach the top part. While the temporary attachment, the top 2 to 3mm should protrude as shown below. 4. Set the side guide at the most inner position. (Narrowest width) Base line
KONICA MINOLTA Confidential 215 5. Decide the distance between PET and paper feed suction belt. While looking through the window which is prepared at step 1, slowly insert the tray until the PET attached at step 3 approaches to the nearest position from the paper feed suction belt (should not contact). Target is less than 0.5mm. However, if the PET sheet contacts with the belt, the belt breaks.) If the PET contact with the belt, reduce the protruding distance. 6. After deciding position at top position, attach rest of the PET sheet to the bottom. 7. Attach PET to front side Repeat the step 3 to 6 work for the auxiliary guide. 8. Reinstall the removed parts Attach the auxiliary lift up plates removed at step 2 and tray small cover removed at step 1. Note When the thin paper (up to approx. 90g/m2) is fed, the edge of paper may be caught by the PET sheet and chain feed or multi-feed may occurs. Table of contents
KONICA MINOLTA Confidential 216 4.1.4. PF-707m Corner fold (dog ear) and conveyance JAM of small size (1) Symptom When using the small size (Width near to B6S, 5.5x8.5S), the corner of the lead edge side is folded (front side is folded down side) Caused by the corner folding, conveyance JAM occurs at the downstream of the PFU tray exit. (2) Cause When the edge of the paper is not suctioned by the belt, this part sags due to the air from the lead edge. When the paper is conveyed with this state, the paper edge hits the tray and the paper corner are folded. Or largely skewed paper in the tray is fed and causing JAM or image skew to occur at PFU and main body conveyance section The symptom occurs only with the paper which cannot be suctioned (B5S, 5.5x8.5S etc) (Indicated in red line in the figure below) If the edge of the 1st sheet is lifted up by the floating 2nd or later sheet, the symptom does not occur. (Blue line in the photo below) The condition symptom tends to occur High humidity environment (moisture slows down the 2nd and later paper to float) Paper weight 91g/m2 or less of Plain paper and 158g/m2 or less of carted paper (especially, when it is not stiff enough, the edge of paper sags) (3) Solution To reduce the power to push down the paper edge, set 1 or more step(s) lower value for the Feed direction Corner folded location 2nd or later sheets (lift up the 1st sheet) Suction belt unit 1st sheet (dog-ear occurs) 1st sheet (Not occurring) PFU Exit conveyance section
KONICA MINOLTA Confidential 217 Lead Edge Air Level Setting than Auto setting. [Machine]→[Paper Setting]→[Change Set]→[Air Assit]→[Manual]→[Lead Edge Air Level Setting] See paper behavior and decide the optimum value. 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.) Table of contents Feed direction From Machine front side view
KONICA MINOLTA Confidential 218 4.1.5. Thick paper jam due to multi-feed (1) Symptom ・Multi-feed jam may occur on thick paper (257gsm or heavier) . JAM code: J-1610 J-1646 * When the paper inside the tray forms convex toward the bottom of the tray, curl tends to occur. (2) Cause ・The lead air lifts up the 2nd and later sheets causing multi-feed. Feed direction Lead air (3) Solution ・ Fit the attachment (A92WA97A) for the thick paper. Thick paper attachment 1st sheet 2nd sheet Note: When the thick paper attachment is fitted, following jam may occur. JAM code: J-1618/1620/1622. In that case, remove the thick paper attachment then take the countermeasure mentioned in the "Pickup jam clearance workflow" Table of contents
KONICA MINOLTA Confidential 219 4.1.6. Wrinkle on thin paper at trailing edge to feed direction (1) Symptom Wrinkle in feed direction may appear at the trailing edge of thin paper (up to 91g/m2). • Symptom tends to occur when the paper source is other than Tray 5 (Bottom tray of the 1st PFU) • Occurrence location is at the phase of the edge of the PFU registration roller. (Refer to the figure below for the A3 occurrence position) • Tends to occur in high temperature and high humidity environment • Tends to occur when the paper weaving direction is long grain to feed direction. Wrinkle location (2) Cause 1. When the paper entering timing to the registration rollers is faster at the center than edges, the paper conveyance speed differs between center and edges. Wrinkle at trailing edge (in FD) A3 width (297mm) case Around 65- 100mm from paper side (front) Around 65-100mm from paper side (rear) Registration roller Feed Direction
KONICA MINOLTA Confidential 220 2. When the paper is fed forming upward curl, the center of paper reaches to the nipping part of the registration faster than paper edges. It may cause paper wrinkle. Comparison of the upward curl paper and non-curling paper path (3) Solution 1. Change feed tray. If the symptom occurs other than Tray5 (bottom tray) of the 1st PFU, use Tray 5. 2. When the paper forms upward curl, set the paper upside-down. Registration roller Center Upward curling (Wrinkle in FD tends to occur) Cross section at center Cross section at edge Upward curling paper Non-curling paper Non-curling paper Feed Direction Upward curling paper
KONICA MINOLTA Confidential 221 3. Reduce the setting value of the respective tray's pre-registration loop till the symptom isimproved. 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 5: Adjust Tray 5. For Tray 6 (2nd PFU)]: Adjust Tray 6 and 1st PFU Connecting part. For Tray 9 (3rd PFU)]: Adjust Tray 9, 1st PFU Connecting part and 2nd PFU Connecting part. For MB Bypass tray (PFU+MB+LU): Adjust Bypass and Bypass Connecting Part For LU Tray (PFU+MB+LU): Adjust Tray 6 and Tray 6 Connecting Part. Pre-registration Adj. is accessible from following: [Service]→[Machine Adjustment]→[Printer Adjustment]→[Pre-registration Adj.] [Utility/Counter]→[Administrator Setting]→[System Setting]→[Expert Adjustment]→[Printer Adjustment]→[Pre-registration Adj.] Table of contents
KONICA MINOLTA Confidential 222 4.1.7. Light hitting mark at paper edge at PFU Registration PS phase (1) Symptom When the paper source is other than Tray5 of the 1st PFU, the hitting mark appears at the edge of the paper. • Subject tray: Other than PFU Tray5 PFU Tray3/4/5/6/7/8/9/10 and 11 MB-508 LU-202XLm • Occurrence position: PFU registration phase 297mm (A3）width paper: around 130mm from the paper side (machine front side) 11inch (279.4mm) width paper: 120mm from the paper side (machine front side)。 • Hitting mark appearing side Simplex: Leading edge of the non-image side Duplex: Trailing edge of the Page-2 • Width of mark: 2 to 10mm • Condition problem tends to occur ・Paper weight 75 to 128g/m2 ・Paper sheet cutting surface is not neat. Hit mark occurrence position Hitting mark (2) Cause 1. When the paper is fed from trays other than Tray5 of the 1st PFU, while it is conveyed to the PFU registration, it enters the opening for the PFU registration PS. Consequently, the downward convex is formed and it contact with the registration roller. 2. The reaction force from rubber roller to the paper edge generated at PFU registration. Feed Direction 11inch width (279.4mm) Side 2 120mm Feed Direction 297mm width Side 2 130mm Around 10mm Around 2mm (Light mark)
KONICA MINOLTA Confidential 223 PFU Cross section Registration PS opening window Viewing registration PS from the upstream of the paper feed (3) Solution 1. Change the pre-registration loop amount of each tray. Reduce the setting value of the respective tray's pre-registration loop till the symptom is improved. 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 3: Adjust Tray 3. For Tray 6 (2nd PFU)]: Adjust Tray 6 and 1st PFU Connecting part. For Tray 9 (3rd PFU)]: Adjust Tray 9, 1st PFU Connecting part and 2nd PFU Connecting part. For MB Bypass tray (PFU+MB): Adjust Bypass and Bypass Connecting Part For LU Tray (PFU+MB+LU): Adjust Tray 6 and Tray 6 Connecting Part. Pre-registration Adj. is accessible from following: [Service]→[Machine Adjustment]→[Printer Adjustment]→[Pre-registration Adj.] [Utility/Counter]→[Administrator Setting]→[System Setting]→[Expert Adjustment]→[Printer Adjustment]→[Pre-registration Adj.] 2. Change paper set direction If possible, set the paper upside-down. (It is effective when the paper edge bur is downward) Loop space guide/Up Loop space guide/Lw Registration roller Registration PS Opening Mark occurs here Paper Registration roller Registration PS Opening Conveyance Guide LW Upstream view Registration PS Downward convex contacts Registration roller with registration roller Paper - 1st PFU upper middle trays path - 2nd and 3rd feeder path - PFU bottom tray path
KONICA MINOLTA Confidential 224 3. Change paper source tray If possible, change the paper tray to Tray5 of the 1st PFU. Table of contents
KONICA MINOLTA Confidential 225 4.1.8. Horizontal conveyance jam at feeding thick paper (J1624/1814/2014) (1) Symptom When feeding 300gsm or heavier paper from the Tray 3 or 4 of the 1st PFU, all trays of the 2nd PFU or the 3rd PFU, the jam, not reaching to off centering timing PS or horizontal conveyance PS/2 may occur. Subject JAM code Feeding from the 1st PFU: J-1624 Feeding from the 2nd PFU: J-1814 Feeding from the 3rd PFU: J-2014 (2) Cause Depending on the paper surface friction force, while the very stiff paper is passing the curving part of paper path, it may slip at the registration roller section. PFU Cross Section (3) Solution 1. Change paper source tray Use Tray5 (Bottom) of the 1st PFU. Table of contents Horizontal conveyance PS/2 Registration roller 1st PFU bottom tray path 1st PFU upper and middle tray path Paper stops between registration roller and horizontal conveyance PS/2.
KONICA MINOLTA Confidential 226 4.2.LU-202XL 4.2.1. No feed JAM/ Paper skew when feeding a western style envelop (when use MK-746) (1) Symptom In combination with MK-746 and the specific size of the envelope, the no feed JAM (J-1501) or the paper skew may occur. (2) Cause When the both sides of leading edge of the envelope is curled upward, it contacts with the edge of the paper feed guide plate of the tray and generates friction. Consequently, the no feed JAM or the paper skew occurs. (3) Solution Do not use the bottom auxiliary plate for the envelope when the sides of leading edge curls upward. Correct the curl by hanging the both sides of the leading edge. Both corner of around last paper are not hung by the effect of corrugation. MK-746 Bottom auxiliary guide Side view of leading edge Envelop of reading edge convex down MK-746 Bottom auxiliary plate Feed guide plate level LU pickup roller The leading edge contacts with the Guide plate
KONICA MINOLTA Confidential 227 Place the envelope on the flat location to check the leading edge curl. Table of contents Add the Bottom auxiliary plate Do not add the Bottom auxiliary l t Downward curl/Flat Convex down
KONICA MINOLTA Confidential 228 4.2.2. LU-202m/LU-202XL/202XLm J-1501(No feed Jam) occurs when the thick paper and the coated paper is fed. (1) Symptom J-1501 (No feed JAM) occurs feeding from LU-202m/LU-202XL. Paper does not go over the paper stopper plate. Or paper stops just after feed roller nips. (2) Cause When paper curls or using the air-flow separation is used, the paper does not reach to the expected position and cannot get over the stopper plate. (3) Solution Turn the paper stopper plate upside down. It makes the paper go over the stopper more easily because, the angle of separation section is lowered and the position from the paper top to the top of the paper stopper plate is lowered. Table of contents LU-202m/LU-202XL paper feeding section When paper is fed, it take time to over on the paper stuck plate. Paper stopper plate Pick up roller Pre-registration roller Paper feed roller Separation roller Paper feed sensor Pre-registrations sensor Turn the paper stopper plate upside down Up-pointing arrow Normal Loosen 2 screws Paper stopper plate Down-pointing arrow
KONICA MINOLTA Confidential 229 4.2.3. LU-202m/LU-202XL/202XLm J-1502(No feed JAM) occur when feeding coated paper (1) Symptom J-1502 (No feed JAM) occurs when feeding coated paper from LU-202m/LU-202XL/202XLm (2) Cause Paper cannot reach the pre-registration roller, as the paper feed power of the paper feed roller becomes lower when the component of the coating attaches to the roller. (3) Solution Feed paper to the pre-registration roller with the help of the pickup roller. Change the DIPSW171-1 from 0 to 1. [Service Mode]→[System Setting]→[Software DIPSW Setting]→DIPSW171-1:1 (ON). DIPSW171-1: 1 Control When the Air assist is set to ON At starting to feed paper, "Pick up roller" goes down When the paper reaches "Pre registrations sensor" (when "Pre-registration roller" nipped), "Pick up roller" is released. DIPSW171-1: 0 Control (Default) At starting to feed paper "Pick up roller" goes down. When the paper reaches "Pre-registrations sensor" (when "Paper feed roller" nipped) , "Pick up roller" is released. Table of contents LU-202m/LU-202XL paper feeding section Paper stop before reaching to preregistration sensor Pick up roller Pre registration roller Paper feed roller Separation roller Paper feed sensor Pre registration sensor
KONICA MINOLTA Confidential 230 4.2.4. LU-202XL/202XLm Black Line at 104mm, 208mm from leading edge 614mm from trailing edge or narrow trailing space (magnification defect) (1) Symptom When the thick long paper more than 217gsm is fed from LU-202XL, black line occurs at 104mm and 208mm from leading edge, and 614mm from trailing edge. Or the blank area at trailing edge becomes narrow. (2) Cause The pre-registration roller of LU assists to feed long paper more than 217gsm. At that time, if the speed is different between main body registration roller and the LU preregistration roller, the symptom occurs. Black Line 104mm from Leading edge: The 1st transfer position shifts when the leading edge enters to the 2nd transfer roller. 208mm from Leading edge: The write position shifts when the leading edge enters to the 2nd transfer roller. 614mm from trailing edge: Rollers speed change when the paper exits the pre-registration roller and paper bounces up. Blank area at the trailing edge is narrow (magnification error) When the LU pre-registration roller pushes paper too hard, it slips at the main body registration roller and the image stretches, then the blank area becomes narrower. (3) Solution Following adjustment is effective for BK line and narrow blank area at tailing edge. Set to minus direction on [LCT Banner Paper Regist. Speed Adj. ] of [Expert Adjustment]. [Utility]→[Administrator Setting]→[System Setting]→[Expert Adjustment]→[Printer Adjustment] →[LCT Banner Regist. Speed Adj.] Adjust every -5 steps from 0 (Default) up to -15 steps. Be sure to check the print image for every setting change at [Print mode] This adjustment has effect on BK line 104mm and 208mm from leading edge when it is worse than Image of the normal paper size. If BK line occurs on the normal paper size, at first conduct countermeasure of [Line or banding on image due to speed change (Shock noise) ]. Table of contents BK Line Narrow trailing space 104m 208m 614m
KONICA MINOLTA Confidential 231 4.2.5. Multi-feed jam of coated paper (J-1510) (1) Symptom When the coated paper is fed from LU-202XLm, J-1510 (multi-feed jam) occurs. (2) Cause The coated paper is hard to separate by the separation roller as paper friction is high. （3） Solution 1. Feed from PFU Use PFU with air separation with higher separation ability. 2. If the customer needs to use LU, change settings as follows. However, depending on the paper condition, multi-feed may remain. 1. Turning ON the dehumidifying heater. (Turn ON manually if it is OFF by Auto setting) 2. Conduct the [Separation pressure adjustment] to reduce by 2 steps. (See below for details) 3. Separate paper manually. 4. If the above is not effective, change paper set direction upside-down. Reference: LU-202XLm Separation Pressure Adjustment 1) Remove the LU. 2) Move the hook of the spring [1] to the direction [3] by 2 steps of the indication. Note ▪ The 5 tabs correspond to 5 pressure levels. When you attach the hooked end of the spring to a tab on the [2] side, the pressure raises. When you attach it to a tab on the [3] side, the pressure reduces. Reducing pressure: Prevents multi-feed jam Raising pressure: Prevents no-feed jam ▪ The spring force changes in increments of about 10%. LU-202XLm Feed section Separation roller cannot separate sheets as they contact firmly. Pick up roller Separation roller Feed roller Pre-registration roller Pre-feed sensor NF Sensor
KONICA MINOLTA Confidential 232 4.3.OT-510 4.3.1. J-7229 The paper trailing edge does not go out the paper exit section (Connecting OT-510) (1) Symptom J-7229 occurs and the paper trailing edge does not get out from the paper exit. (2) Cause The paper sticks on the guide plate around the area between the horizontal conveyance to paper exit conveyance of the OT-501 and timing delays. The symptom is remarkable when the contact area between paper and the guide is large. . (3) Solution Adjust the paper curl with decurler setting for reduce the contact area. Change the setting of the Output Curl(Back on Top) 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 [+2]. Table of contents Paper FS paper path Stop the paper as the figure The cause is the paper sticking to the guide plate
KONICA MINOLTA Confidential 233 4.4.FS-532 4.4.1. Irregular correspondence of the main tray exit (1) Symptom The exit unalignment in a main tray occur due to electrostatic adsorption or electrostatic repulsion. (2) Cause The neutralizing effect of the neutralizing brush adopted as dirt of paper leading edge correspondence may not fully be acquired. (3) Solution Replace of the neutralizing brush of a main tray exit part. Change part relative table Replacement procedure 1. The main power switch turned OFF. 2. Remove the FS-532 from system. 3. Remove the outer cover following "G Disassembling/Reassembling" of the service manual. 4. ・ When PI-502 is connected 1. It removes, when PI-502 is connected. Remove the cover(2 screws) Present Replace parts A4F37179(Q'ty2) A4F38999 (Q'ty 2) A4F37180(Q'ty 1) A4F38998(Q'ty 1) PI-502
KONICA MINOLTA Confidential 234 ・When PI-502 is not connected 1. Loosen 2 screws.[1] 2. Remove the upper cover/Rt1[2] in the arrow-marked direction. 3. Remove the rear cover. 4. Remove 2 screws[1]. 5. Open the front door[2], remove 2 screws [3] and then remove the upper cover/Rt2[4]. 5. Remove 3 screws [1] and remove the upper cover/Fr1 [2].
KONICA MINOLTA Confidential 235 6. Remove the front door. Remove 7 screws [1]. 7. Disconnect the connector [1] and remove the upper cover/Fr2 [2]. 8. Remove 3 screws [1] and then remove the upper cover/Rr [2.]
KONICA MINOLTA Confidential 236 Exit part cover 9. Remove the upper cover/Md. 10. Remove 4 screws [1], and remove the sub tray [2]. 11. Remove the exit part cover.
KONICA MINOLTA Confidential 237 5. Remove the 2 screws from the inside of a machine. 6. It removes, while rotating a cover.
KONICA MINOLTA Confidential 238 A4F37179⇔A4F38999 A4F37179⇔A4F38999 A4F37180⇔A4F38998 A B C Sheet metal edge standard Punch mark standard Sheet metal edge standard Punch mark standard Sheet metal edge standard Punch mark standard 7. Replace and stuck of the neutralizing brush. Change part relative table Attachment standard A section detail view B section detail view C section detail view Present Replace parts A4F37179(Q'ty:2) A4F38999(Q'ty:2) A4F37180(Q'ty:1) A4F38998(Q'ty:1)
KONICA MINOLTA Confidential 239 8. Assembly Reinstall the preceding parts following the removal steps in reverse. Table of contents
KONICA MINOLTA Confidential 240 4.4.2. FS-532/OT-510/FS-612/FS-531 Solution of Condensation under direct connection (1) Symptom Moisture drops on the paper or JAM occurs around paper exit under following machine configuration. FS-532/OT-510/FS-612/FS-531 are connected main body directly. (2) Cause Condensation around paper exit This symptom is identified by checking surface of the paper exit. If it gets wet, this case applies. This symptom is related with ambient environment. It tends to occur under low temperature. (3) Solution (a) Print 100 sheets or more continuously. (Guide plate become warm and this symptom disappear.) (b) Turn on the main body tacking fan. Humidity (moisture) of paper exit can be reduced by turning on the tacking fan on the control panel. Recommended setting (Following is just reference, please set the optimum value around following.) Following value is for ambient temperature 21-24 Celsius. If temperature is lower than 21 Celsius, please set a little higher. If temperature is higher than 24 Celsius, please set a little lower. Air setting Less than 105gsm basically it is no need, but if necessary 1 or 2 106-135gsm 2 136-176gsm 3 177-216gsm 5 More than 217gsm 3 (c) Change process speed From High speed to Middle speed / From Middle speed to Low speed Note If air blow of main body tacking fan is too strong, JAM between main body and FS6 may occur. (Especially, the thin paper may jam.) If air blow of main body tacking fan is set stronger, fan noise may become louder. Table of contents
KONICA MINOLTA Confidential 241 4.5.IQ-501 4.5.1. IQ-501, C-6A01 (1) Symptom When Main body connects IQ-501 with VI-501, C-6A01 occurs (Only C2070/C3080 series). (2) Cause When the main body of C2070/C3080 series connects IQ-501with VI-511, C-6A01 may occur due to static electricity from the display port connector at 4 locations. (3) Solution Attach Cover/A (A9PJ1385 ) and Cover/B (A9PJ1384) to connectors to prevent leakage of the static electricity. 1. Attach A9PJ1385 aligning to the corner of the black plastic, covering 2 sides. 2. Attach A9PJ1384 aligning to the corner of the black plastic overlapping A9PJ1385. Covers are attached to VI-511 in factory from May 2017 production. Table of contents 4 Red circle points are the target. Attaching base for A9PJ1384: Corner of the black plastic. (Red lines in the photo) Overlap the A9PJ1385. Attaching base for A9PJ1385: Corner of the black plastic (Blue lines). Corner of Black plastic Main Body PRIPB Cable Cable Relay board Board(Front) Board(back)
KONICA MINOLTA Confidential 242 4.5.2. IQ-501 and MK-744C (Patlite), C-E002/E013 (1) Symptom When Main body, IQ-501 and MK-744C are connected, C-E002/C-E013 may occur (only C2070/3080 series) (2) Cause When static electricity enters between one light to another light of MK-744C, it may trouble IQ501. (3) Solution Attach the protection PET sheet to cover the light to prevent entering of the static electricity. Sheet/A A8731603 Table of contents Static electricity Protection sheet
KONICA MINOLTA Confidential 243 4.6.DF-706 4.6.1. DF-706, [ADF Clean] icon appears (1) Symptom [ADF Clean] icon appears. (2) Cause a. The Scanning glass gets dirty. b. ADF scan was not performed correctly because it is installed aslant. (3) Solution a. Wipe the scanning glass and the reading roller with the wipe cloth. b. Conduct [Adjusting front side skew feed on dual scan document feeder], to finely adjust the ADF position. Adjust referring to the following excerpted service manual.
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KONICA MINOLTA Confidential 248 4.7.MB-508 4.7.1. Abnormal noise while coated paper feeding (1) Symptom When standard size coated paper is fed from MB-508, abnormal noise (squeaking noise) occurs from feed roller and separation roller section. It tends to occur in low temperature and low humidity environment. MB By Pass cross section (2) Cause • The coated paper is slipping at feed roller and separation roller • The friction co-efficient (μ) of the separation roller has changed due to the attachment of the component from the coating (3) Solution 1. Change feed tray Use PFU trays 2. If customer needs to use bypass tray, clean the feed roller and separation roller Refer to the "User's Guide" for the details of the cleaning. Table of contents Separation roller Feed roller Pick-up roller