Page 1 Transmittal Page Product Title Part Number WorkCentre M20 Family Service Manual 708P87563 Status Date Launch March 2004 Please note the following: This output is created from an electronic documentation (EDOC) database and is not optimised for hard copy. Please be aware of the following: •Text may not appear to be in the logical order when flowing around figures.
Page 3: Xerox Workcentre
Service Manual binder inserts Xerox WorkCentre M20 Family Service Manual Front pocket insert Xerox WorkCentre M20 Family Service Manual Spine insert...
Page 5 Xerox WorkCentre M20 Family Service Manual March 2004...
Page 6 Xerox service documentation is intended for use by certified, product trained service per- sonnel only. Xerox does not warrant or represent that it will notify or provide to such customer any future change to this documentation. Customer performed service of equipment, or modules, components or parts of such equipment may affect whether Xerox is responsible to fix machine defects under the warranty offered by Xerox with respect to such equipment.
Page 7 Revision Control List Product: Title: Part Number: Revision: WorkCentre M20 Family Service Manual 708P87563 March 2004 Documentation compatible with this revision. Page Rev. Page Rev. Page Rev. 4-25 03/04 5-26 03/04 6-35 03/04 EDOC (Compact Disc) ......708P87562...
Page 9 Introduction About This Manual ......................Warnings, Cautions And Notes ..................Safety Precautions ......................Health and Safety Incident reporting................Translation of Warnings ....................Introduction March 2004 Work Centre M20 Family...
Page 10 Introduction March 2004 Work Centre M20 Family...
Page 11 This manual is based on a Japanese original. The part names used throughout do not comply with the standard Xerox part naming convention. Because part names have been molded on to some plastic components and may also be embedded in the software, the part names have not been changed.
Page 12 Warnings, Cautions And Notes WARNING Follow the service procedure exactly as written. Use of controls or adjustments other A translated version of all warnings is in Translation of Warnings. than those specified in this manual, may result in an exposure to invisible laser radia- tion.
Page 13: Safety Precautions
Safety Precautions Do not use freon propelled chemicals. When sprayed, these can generate electrical charges sufficient to damage ESDs. Follow these safety, ESD, and servicing precautions to prevent personal injury and equipment Do not remove a replacement ESD from its protective packaging until immediately before damage.
Page 14: Health And Safety Incident Reporting
Define actions to correct confirmed incidents. ensure Xerox regulatory compliance. VI. Appendices IV. Definitions The Health and Safety Incident Report involving a Xerox Product (Form # EH&S-700) is avail- Incident: able in the following locations: • On electronic documentation (EDOC), located in the folder \safety.
Page 15 Translation of Warnings DANGER : Couper l'alimentation électrique de la machine. Déconnecter le cordon d'ali- mentation de la prise pendant les activités de dépannage ne nécessitant pas d'alimenta- Introduction tion électrique. L'électricité peut entraîner des blessures graves voire mortelles. Les Warnings, Cautions And Notes pièces mobiles peuvent également présenter un danger.
Page 16 mentation de la prise pendant les activités de dépannage ne nécessitant pas d'alimenta- pièces mobiles peuvent également présenter un danger. tion électrique. L'électricité peut entraîner des blessures graves voire mortelles. Les AVVERTENZA: Spegnere la macchina. Scollegare il cavo elettrico dalla presa durante gli pièces mobiles peuvent également présenter un danger.
Page 17 VORSICHT: Gerät ausschalten. Bei Wartungsarbeiten, die keine Stromzufuhr erfordern, Switch off the electricity to the machine. Disconnect the power cord from the customer Netzstecker ziehen! Bei Kontakt mit der Netzspannung besteht Verletzungs- und Leb- supply while performing tasks that do not need electricity. Electricity can cause death or ensgefahr.
Page 18 Netzstecker ziehen! Bei Kontakt mit der Netzspannung besteht Verletzungs- und Leb- ensgefahr. Bei beweglichen Teilen besteht Verletzungsgefahr. AVISO: Apague la máquina. Desconecte el cable de alimentación de la toma de corriente 9.2 Non-Xerox Toner Cartridge RAP mientras efectúa tareas que no necesitan energía eléctrica. La electricidad puede WARNING causar lesiones e incluso la muerte.
Page 19 supply while performing tasks that do not need electricity. Electricity can cause death or AVISO: Apague la máquina. Desconecte el cable de alimentación de la toma de corriente injury. Moving parts can cause injury. mientras efectúa tareas que no necesitan energía eléctrica. La electricidad puede causar lesiones e incluso la muerte.
Page 20 Do not touch the fuser while it is hot. AVISO: Apague la máquina. Desconecte el cable de alimentación de la toma de corriente mientras efectúa tareas que no necesitan energía eléctrica. La electricidad puede DANGER : Ne pas toucher au four pendant qu'il est encore chaud. causar lesiones e incluso la muerte.
Page 21: Image Quality Raps
pièces mobiles peuvent également présenter un danger. WARNING AVVERTENZA: Spegnere la macchina. Scollegare il cavo elettrico dalla presa durante gli Switch off the electricity to the machine. Disconnect the power cord from the customer interventi che non richiedono elettricità. L'elettricità può causare infortuni o morte e azi- supply while performing tasks that do not need electricity.
Page 22 onare parti della macchina che possono causare lesioni personali. supply while performing tasks that do not need electricity. Electricity can cause death or injury. Moving parts can cause injury. VORSICHT: Gerät ausschalten. Bei Wartungsarbeiten, die keine Stromzufuhr erfordern, Netzstecker ziehen! Bei Kontakt mit der Netzspannung besteht Verletzungs- und Leb- DANGER : Couper l'alimentation électrique de la machine.
Page 23 ensgefahr. Bei beweglichen Teilen besteht Verletzungsgefahr. injury. Moving parts can cause injury. AVISO: Apague la máquina. Desconecte el cable de alimentación de la toma de corriente DANGER : Couper l'alimentation électrique de la machine. Déconnecter le cordon d'ali- mientras efectúa tareas que no necesitan energía eléctrica. La electricidad puede mentation de la prise pendant les activités de dépannage ne nécessitant pas d'alimenta- causar lesiones e incluso la muerte.
Page 24 AVVERTENZA: Spegnere la macchina. Scollegare il cavo elettrico dalla presa durante gli Switch off the electricity to the machine. Disconnect the power cord from the customer interventi che non richiedono elettricità. L'elettricità può causare infortuni o morte e azi- supply while performing tasks that do not need electricity. Electricity can cause death or onare parti della macchina che possono causare lesioni personali.
Page 25 interventi che non richiedono elettricità. L'elettricità può causare infortuni o morte e azi- WARNING onare parti della macchina che possono causare lesioni personali. Switch off the electricity to the machine. Disconnect the power cord from the customer VORSICHT: Gerät ausschalten. Bei Wartungsarbeiten, die keine Stromzufuhr erfordern, supply while performing tasks that do not need electricity.
Page 26 DANGER : Exécuter cette procédure avec précaution. La présence de bords tranchants VORSICHT: Gerät ausschalten. Bei Wartungsarbeiten, die keine Stromzufuhr erfordern, peut entraîner des blessures. Netzstecker ziehen! Bei Kontakt mit der Netzspannung besteht Verletzungs- und Leb- ensgefahr. Bei beweglichen Teilen besteht Verletzungsgefahr. AVVERTENZA: procedere con cautela durante questa procedura.
Page 27 Switch off the electricity to the machine. Disconnect the power cord from the customer mentation de la prise pendant les activités de dépannage ne nécessitant pas d'alimenta- supply while performing tasks that do not need electricity. Electricity can cause death or tion électrique.
Page 28 WARNING pièces mobiles peuvent également présenter un danger. AVVERTENZA: Spegnere la macchina. Scollegare il cavo elettrico dalla presa durante gli Take care during this procedure. Sharp edges may be present that can cause injury. interventi che non richiedono elettricità. L'elettricità può causare infortuni o morte e azi- DANGER : Exécuter cette procédure avec précaution.
Page 29 podrían producir lesiones. WARNING REP 8.4 ELA HOU - MP Assembly Take care during this procedure. Sharp edges may be present that can cause injury. WARNING DANGER : Exécuter cette procédure avec précaution. La présence de bords tranchants peut entraîner des blessures. Switch off the electricity to the machine.
Page 30 pièces mobiles peuvent également présenter un danger. DANGER : Exécuter cette procédure avec précaution. La présence de bords tranchants peut entraîner des blessures. AVVERTENZA: Spegnere la macchina. Scollegare il cavo elettrico dalla presa durante gli interventi che non richiedono elettricità. L'elettricità può causare infortuni o morte e azi- AVVERTENZA: procedere con cautela durante questa procedura.
Page 31 onare parti della macchina che possono causare lesioni personali. VORSICHT: Gerät ausschalten. Bei Wartungsarbeiten, die keine Stromzufuhr erfordern, Netzstecker ziehen! Bei Kontakt mit der Netzspannung besteht Verletzungs- und Leb- ensgefahr. Bei beweglichen Teilen besteht Verletzungsgefahr. AVISO: Apague la máquina. Desconecte el cable de alimentación de la toma de corriente mientras efectúa tareas que no necesitan energía eléctrica.
Page 32 Introduction March 2004 Translation of Warnings xxiv Work Centre M20 Family...
Page 33: Table Of Contents
1 Service Call Procedures SCP 1 Initial Actions......................SCP 2 First Call Actions ....................SCP 3 Normal Call Actions ..................... SCP 4 Fault Analysis ...................... SCP 5 Subsystem Maintenance ..................SCP 6 Final Actions ......................SCP 7 Machine Configurations and Options..............Service Call Procedures March 2004 Work Centre M20 Family...
Page 34 Service Call Procedures March 2004 Work Centre M20 Family...
Page 35: Scp 1 Initial Actions
SCP 1 Initial Actions SCP 2 First Call Actions Initial Actions are used to gather information on the machine performance First Call Actions are used for the first service call. The Service Call Procedures section is used to identify a suspected problem with the machine. Procedure Check the machine configuration with the customer.
Page 36: Scp 3 Normal Call Actions
8.6 Paper Jam 2 Check Inside RAP. • 8.7 No Paper Add Paper RAP. • 9.1 Install Cartridge RAP. • 9.2 Non-Xerox Toner Cartridge RAP. • 9.3 Drum Warning RAP. • 9.4 Replace Drum RAP. • 9.5 Toner Empty RAP.
Page 37 • IQ5 Vertical White Lines RAP. • GP 17 PBA OPE Operation. • IQ6 Light Image RAP • GP 18 PBA LIU Operation. • IQ7 Dark Image RAP. • GP 19 SMPS Unit Operation. • IQ8 Background RAP • GP 20 Acronyms and Parts Description List. •...
Page 38: Scp 5 Subsystem Maintenance
SCP 5 Subsystem Maintenance SCP 6 Final Actions Subsystem Maintenance contains information regarding the Component Life of the machine. Final Actions are used to evaluate the total operation of the system and to identify the actions required to complete the service call. Component Life Procedure WARNING...
Page 39: Scp 7 Machine Configurations And Options
SCP 7 Machine Configurations and Options Machine Configurations and Options Refer to Table 1 for the CopyCentre C20, WorkCentre M20 and WorkCentre M20i configura- tions and options. Table 1 Machine Configurations Features CC C20 WC M20 WC M20i Basic copier with paper tray 1...
Page 40 Service Call Procedures March 2004 SCP 7 Work Centre M20 Family...
Page 41: Status Indicator Raps
8.5 Paper Jam 1 Open/Close Door RAP................. 8.6 Paper Jam 2 Check Inside RAP................8.7 No Paper Add Paper RAP..................9.1 Install Cartridge RAP....................9.2 Non-Xerox Toner Cartridge RAP ................9.3 Drum Warning RAP....................2-10 9.4 Replace Drum RAP ....................
Page 42 Status Indicator RAPs March 2004 Work Centre M20 Family...
Page 43 1.1 Power Failure RAP 10. If the fault is still present, install a new SMPS + HVPS, PL 1.10 Item 1. Use this RAP to identify the cause of a power supply failure. Procedure WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity.
Page 44: Document Jam Rap
5.1 Load Document RAP 5.2 Document Jam RAP The machine has detected a no document loaded, when a document is required. The machine has detected a jammed document in the DADF. Procedure Procedure WARNING WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine.
Page 45: Lsu Error Rap
6.1 LSU Error RAP 8.1 Door Open RAP The machine has detected that the LSU unit has not come to the ready state at the expected The machine has detected that the right hand side cover is open. When the cover is open, time.
Page 46: Bypass Jam Rap
8.2 Bypass Jam RAP 8.3 Duplex Jam RAP The machine has detected a failure to feed from the bypass tray. The machine has detected the paper jam during duplex printing. Procedure Procedure WARNING WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine.
Page 47: Paper Jam 0 Open/Close Door Rap
8.4 Paper Jam 0 Open/Close Door RAP 8.5 Paper Jam 1 Open/Close Door RAP The machine has failed to detect paper at the feed sensor. The machine has detected paper jammed in the fuser area. Procedure Procedure WARNING WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine.
Page 48: Paper Jam 2 Check Inside Rap
8.6 Paper Jam 2 Check Inside RAP 8.7 No Paper Add Paper RAP The machine has detected paper at the output sensor. The machine does not detect paper in the paper tray. Procedure Procedure WARNING WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine.
Page 49: Install Cartridge Rap
Refer to Wiring Diagram 1 and Wiring Diagram 3. Perform the following: Refer to Wiring Diagram 1. Perform the following: Ensure that the cartridge is the correct Xerox cartridge for the machine, ELA - toner unit Install the ELA - toner unit set, PL 9.10 Item 2.
Page 50: Drum Warning Rap
9.3 Drum Warning RAP 9.4 Replace Drum RAP The drum cartridge is near the end of the design life. The message indicates that the drum has The drum cartridge has reached the end of the design life of 20,000 print pages. reached 18,000 print pages.
Page 51: Toner Empty Rap
9.5 Toner Empty RAP 9.6 Toner Low RAP The machine has detected that the toner cartridge is empty. The machine has detected that the toner cartridge is almost empty. Procedure Procedure WARNING WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine.
Page 52: Low Heat Error Rap
10.1 Low Heat Error RAP 10.2 Open Heat Error RAP The fuser has failed to reach the correct operating temperature or a disconnected thermistor During normal operation, the temperature has dropped below the operating level. has been detected. Procedure Procedure WARNING WARNING Switch off the electricity to the machine.
Page 53: Over Heat Error Rap
10.3 Over Heat Error RAP 20.1 Fax Error Messages RAP The fuser temperature has risen above the normal level. Although the fuser unit can return to a This is the set of messages displayed when the machine encounters fax problems. The mes- normal operating temperature, the fuser unit may consequently be damaged.
Page 54: Scan To E-Mail Error Messages Rap
Retry Redial? 20.2 Scan to E-mail Error Messages RAP This indicates that the machine is waiting to re-dial. Press Start to re-dial immediately, or press This is the set if messages displayed when the machine encounters scan to e-mail problems. Stop to cancel the re-dial procedure.
Page 55: Fax Faults Without A Message Rap
Group Full 20.3 Fax Faults Without a Message RAP The user has attempted to enter a number into a group that is full. Try deleting unused num- Use this RAP when the machine has a fax fault but does not display a message. If a fax fault bers.
Page 56: Of1 Function Impossible Rap
OF1 Function Impossible RAP OF2 IP Conflict RAP The selected mode is not supported in the current machine configuration. The machine has detected a problem connected with IP addresses. Procedure Procedure WARNING WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine.
Page 57: Of3 Use Auxiliary Access Rap
OF3 Use Auxiliary Access RAP OF4 Audible Noise RAP The machine has detected that there is no credit in the foreign device. To isolate and identify the source of unusual noises. Procedure Procedure WARNING WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine.
Page 58 Solution: – Clean the DADH input tray in the area beneath the input guides. Unusual Noise from the ELA HOU Scanner Assembly Possible causes are: • Mis-aligned or damaged parts. • Defective motor driver. Solution: • Check the position of the motor step - scan and associated gears, PL 14.11. •...
Page 59 3 Image Quality Image Quality RAPs IQ1 Blank Copies RAP ....................IQ2 Black Copies From the Scanner RAP ..............IQ3 Blurred Image From the Scanner RAP..............IQ4 Vertical Black Lines or Bands RAP ................IQ5 Vertical White Lines RAP ..................IQ6 Light Image RAP ......................
Page 60 Image Quality March 2004 Work Centre M20 Family...
Page 61: Iq1 Blank Copies Rap
IQ1 Blank Copies RAP IQ2 Black Copies From the Scanner RAP Use this RAP when the machine produces blank copies. Use this RAP when the scanner produces black copies, but on-line printing is normal. Procedure Procedure WARNING WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine.
Page 62: Iq3 Blurred Image From The Scanner Rap
IQ3 Blurred Image From the Scanner RAP IQ4 Vertical Black Lines or Bands RAP Use this RAP when the scanner produces blurred images. Use this RAP when there are black lines or bands along the process direction, as shown in Fig- ure 1.
Page 63: Iq5 Vertical White Lines Rap
IQ5 Vertical White Lines RAP IQ6 Light Image RAP Use this RAP when there are white lines along the process direction, as shown in Figure 1. Use this RAP when the machine produces light images in all modes, as shown in Figure 1. Figure 1 Vertical white lines Figure 1 Light image Procedure...
Page 64: Iq7 Dark Image Rap
• Clean any contamination on the ELA - toner unit set. If necessary, install a new ELA IQ7 Dark Image RAP - toner unit set, PL 9.10 Item 2. Use this RAP when the machine produces dark images in all modes. Ensure the transfer roller contacts, which are housed within the PMO - housing terminal MC2 are not deformed.
Page 65: Iq8 Background Rap
IQ8 Background RAP IQ9 Ghost Images RAP Use this RAP when the printed sheets have a dark or spotted background, as shown in Figure Use this RAP when the printed sheets have ghost images, as shown in Figure 1. Figure 1 Ghost images Figure 1 Background Procedure Procedure...
Page 66: Iq10 Stains On Back Of Paper Rap
Table 1 Ghosted image distance IQ10 Stains on Back of Paper RAP Use this RAP when the printed sheets have stains on the non-image side of the paper. Defect distance Roller Component Parts List Ref. 91.1mm Pressure roller P/O ELA HOU - fuser PL 9.10 Item 4 Procedure assembly...
Page 67: Iq11 Poor Fusing Rap
IQ11 Poor Fusing RAP IQ12 Partial Blank Image (Not Periodic) RAP Use this RAP when the image is improperly fused. Use this RAP when the printed sheets have blank areas, not forming a regular pattern. Procedure Procedure WARNING WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine.
Page 68: Iq13 Partial Blank Image (Periodic) Rap
IQ13 Partial Blank Image (Periodic) RAP IQ14 Different Image Density (Left and Right) RAP Use this RAP when the printed sheets have blank areas that form a regular, or repeated, pat- Use this RAP when the printed sheets have different areas of image density across the pro- tern.
Page 69: Iq15 Horizontal Bands Rap
IQ15 Horizontal Bands RAP Table 1 Defect distance Use this RAP when the image has bands appearing across the process direction. An example Defect distance Roller Component Parts List Ref. is shown in Figure 1. 51.9mm Cleaning roller P/O ELA toner unit set PL 9.10 Item 2 56.6mm Transfer roller...
Page 70: Iq16 Periodic Printing Defects Check Rap
IQ16 Periodic Printing Defects Check RAP Use this RAP when the printed image shows regular patterns in black or white, across the pro- cess direction. Procedure WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity.
Page 71: Iqs 1 Solid Area Density
IQS 1 Solid Area Density Documents Test pattern: 82P524 and the solid area density scales, 82E8230 (SIR 542.00) or 82P448 (SIR 494.00). Specification Make a copy of the test pattern. Compare the copy with the solid area density scale. The den- sity of the 1.0 areas on the copy of the test pattern, must be as dark or darker than the 0.8 ref- erence on the solid area density scale.
Page 72: Iqs 2 Skew
IQS 2 Skew IQS 3 Registration Documents Documents Test pattern: 82P524. Test pattern: 82P524 Specification Specifications Refer to Table 1, Skew specifications. Refer to Table 1. Table 1 Skew specifications Table 1 Registration measurement Skew Specification Registration Specification Print Skew Max: +/-2.5mm (7/64 inch) per 250mm (10 inches) (+/-1%) Lead edge 4mm (5/32 inches) +/- 3mm (1/8 inches)
Page 73 4 Repairs and Adjustments REP 1.1 SMPS + HVPS....................REP 1.2 PBA Main......................REP 2.1 ELA HOU OPE Assembly ................. REP 4.1 ELA HOU - Drive Assembly ................REP 4.2 MEA Unit - Rear Cover ..................REP 4.3 PMO Cover Exit Rear ..................4-10 REP 4.4 ELA HOU - Frame Main Assembly ..............
Page 74 Repairs and Adjustments March 2004 Work Centre M20 Family...
Page 75: Rep 1.1 Smps + Hvps
REP 1.1 SMPS + HVPS • OPC (green wire, blue shield) • THV (red wire, blue shield) Parts List on PL 1.10 • Removal Remove the SMPS + HVPS, Figure 2. WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity.
Page 76: Rep 1.2 Pba Main
REP 1.2 PBA Main Parts List on PL 1.10 Removal Remove 2 screws, then WARNING the PBA LIU. Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity. Electricity can cause death or injury.
Page 77: Rep 2.1 Ela Hou Ope Assembly
REP 2.1 ELA HOU OPE Assembly Parts List on PL 2.10 and PL 2.11 Remove 6 screws, then Removal the PBA main. WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity. Electricity can cause death or injury.
Page 78 Carefully remove the PBA SUB - OPE. Remove the rubber contacts. Remove 13 screws. Figure 3 Rubber contacts removal Remove the key pads, Figure 4. Figure 2 PBA SUB - OPE removal Remove the rubber contacts, Figure 3. Remove the key pads. Figure 4 Key pads removal Repairs and Adjustments March 2004...
Page 79 If installed, remove the cover E-mail, Figure 5. Remove the key plate, Figure 7. Remove the cover E-mail by gently squeezing together the locking tabs located on the underside of the assembly. Remove key plate. Figure 7 Key plate removal Remove the E-mail key pad, Figure 8.
Page 80: Rep 4.1 Ela Hou - Drive Assembly
REP 4.1 ELA HOU - Drive Assembly Parts List on PL 4.20 Disconnect CN13. Removal WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer Release the harness. supply while performing tasks that do not need electricity. Electricity can cause death or injury.
Page 81: Rep 4.2 Mea Unit - Rear Cover
Replacement REP 4.2 MEA Unit - Rear Cover Replacement is the reverse of the removal procedure. To make the replacement of the Parts List on PL 4.25 drive assembly easier, pull out the ELA - OPC unit set PL 9.10 Item 1 and ELA - toner unit Removal set, PL 9.10 Item 2 approximately 100mm (4 inches).
Page 82: Rep 4.3 Pmo Cover Exit Rear
REP 4.3 PMO Cover Exit Rear Parts List on PL 4.25 Removal WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity. Electricity can cause death or injury.
Page 83: Rep 4.4 Ela Hou - Frame Main Assembly
REP 4.4 ELA HOU - Frame Main Assembly Parts List on PL 4.15 Remove 1 screw, then the PMO cover exit rear. Removal WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity. Electricity can cause death or injury.
Page 84 Remove 5 screws. Remove 1 screw, then the cover bracket motor. Remove the PMO - dummy base frame, then the cam. Remove the PMO lock developer. Figure 2 Cover bracket motor removal Remove the MEA unit - cover assembly. Prepare to remove the ELA HOU - frame main assembly, Figure 3. Disconnect CN19, CN22, Figure 1 Dummy base frame removal CN23 and CN30.
Page 85: Rep 5.1 Ela Hou - Dadf
10. Remove the ELA HOU main frame assembly, Figure 4. REP 5.1 ELA HOU - DADF Parts List on PL 5.10, PL 5.11, PL 5.12, PL 5.13 and PL 5.14 Removal Remove 7 screws, then the ELA HOU - frame main WARNING assembly.
Page 86 WARNING Do not remove the DADF while the DADF is lowered. In the lowered position the coun- Open the MEA unit - cover terbalance springs are compressed and can cause injury when released. open. Remove the ELA HOU - DADF, Figure 2. Place the ELA HOU - DADF on a solid flat sur- face.
Page 87 Prepare to remove the MEA unit cover open, Figure 7. NOTE: Removing the 4 screws that secure the guide - M scan assembly will ease the Remove 2 screws, removal of the MEA unit cover open. then the rear cover. Remove 4 screws.
Page 88 Open the MEA unit - cover open Align the flat on the rear pivot with the slot in the frame. Remove the MEA unit - cover open from the rear pivot, then the front pivot. Remove the MEA unit support pick up assembly.
Page 89 If necessary, remove 4 Remove 1 E-clip, then the screws. bearing. Remove 1 E-clip, then the MEC clutch small (feed). Disconnect the inline con- nector. Remove the guide - M scan assembly. Remove 1 E-clip, 1bearing, then the MEA unit - pickup. Figure 13 Guide - M scan assembly removal 16.
Page 90 Remove 3 screws, then the guide - M duplex inner. Remove the MEA unit guide pickup assembly. Remove 3 screws, then the Remove 3 screws. guide - M duplex lower. Figure 16 Guide removal Figure 15 MEA unit guide pickup assembly removal 19.
Page 91 Remove 1 E-clip and Remove 3 screws, then the ELA the MEC - clutch small (duplex). HOU - DADF motor assembly. Disconnect CN5. Disconnect the MEC - clutch small (duplex) inline connector. Figure 18 ELA HOU - DADF motor assembly removal 21.
Page 92: Rep 6.1 Unit - Lsu
• The MEC clutch small (feed) connects to the black wires. REP 6.1 Unit - LSU • The MEC clutch small (registration) connects to the green wires. Parts List on PL 6.10 • The MEC clutch small (duplex) connects to the yellow wires. Removal •...
Page 93 Disconnect CN3. Remove 3 screws, then the unit - LSU. Figure 1 Preparation Figure 2 Unit - LSU removal Replacement Remove the unit - LSU, Figure 2. Replacement is the reverse of the removal procedure. Repairs and Adjustments March 2004 REP 6.1 Work Centre M20 Family 4-21...
Page 94: Rep 7.1 Mec Unit - Tray Assembly
REP 7.1 MEC Unit - Tray Assembly Parts List on PL 8.11 Removal WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity. Electricity can cause death or injury.
Page 95: Rep 8.1 Ela Hou - Side Cover Assembly
REP 8.1 ELA HOU - Side Cover Assembly Parts List on PL 8.10 Disengage the rear Removal hinge. WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity. Electricity can cause death or injury.
Page 96: Rep 8.2 Mea Unit - Duplex Assembly
REP 8.2 MEA Unit - Duplex Assembly REP 8.3 Transfer Roller Assembly Parts List on PL 8.10 and PL 8.11 Parts List on PL 8.11 Removal Removal WARNING WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer Switch off the electricity to the machine.
Page 97: Rep 8.4 Ela Hou - Mp Assembly
REP 8.4 ELA HOU - MP Assembly Parts List on PL 4.25 and PL 8.20 Removal Remove 1 screw, then the PMO - cover feed. WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity.
Page 98: Rep 8.5 Mea Unit - Feed Roller Assembly
REP 8.5 MEA Unit - Feed Roller Assembly Parts List on PL 8.15 Remove the ELA HOU - Removal MP assembly. WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer Release the harness. supply while performing tasks that do not need electricity. Electricity can cause death or injury.
Page 99: Rep 8.6 Ela Hou - Pickup Assembly
REP 8.6 ELA HOU - Pickup Assembly Parts List on PL 8.25 Remove the MEA Removal unit - feed roller assembly. WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity. Electricity can cause death or injury.
Page 100 Carefully push a 2mm allen key (or similar tool) into the hole to release the bearing. While the bearing is released, rotate it 90 degrees to align the clips with the cutouts in the machine frame. Slide the bearing forward to remove. Remove 2 screws, then the MEA unit guide CST PA assembly.
Page 101: Rep 10.1 Ela Hou - Fuser Assembly
REP 10.1 ELA HOU - Fuser Assembly Parts List on PL 9.10 Unclip the sensor cover. Removal WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity. Electricity can cause death or injury.
Page 102 Disconnect the fuser connector, Figure 2. Remove 3 screws, then the ELA HOU - fuser Disconnect the fuser assembly. connector. Figure 3 ELA HOU - fuser assembly removal Figure 2 Fuser connector Replacement Remove the ELA HOU - fuser assembly, Figure 3. Replacement is the reverse of the removal procedure.
Page 103: Rep 10.2 Mec - Exit Assembly
REP 10.2 MEC - Exit Assembly Parts List on PL 10.10 Release the Removal harnesses. WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity. Electricity can cause death or Remove the injury.
Page 104: Rep 10.3 Mea Unit - Cover Pa Exit Assembly
REP 10.3 MEA Unit - Cover PA Exit Assembly Replacement Replacement is the reverse of the removal procedure. Parts List on PL 4.25 Removal WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity. Electricity can cause death or injury.
Page 105: Rep 14.1 Ela Hou - Scanner Assembly
REP 14.1 ELA HOU - Scanner Assembly Parts List on PL 14.10 and PL 14.11 Remove 3 screws. Removal WARNING Switch off the electricity to the machine. Disconnect the power cord from the customer supply while performing tasks that do not need electricity. Electricity can cause death or injury.
Page 106 Remove 2 securing screws from the front of the machine, Figure 4. Lock the ELA HOU - CCD module. Remove 2 screws. Figure 4 Screw removal Remove the ELA HOU - Remove the ELA HOU - scanner assembly, Figure 5. scanner assembly by lift- ing from the front and sliding toward the rear.
Page 107 CAUTION Do not allow the optics cavity to become contaminated. Contamination of the optics cavity can cause image quality defects. 10. Remove the five screws securing the ELA HOU scan upper assembly, Figure 8. Remove 3 screws. Figure 6 Screw removal Remove the ELA HOU OPE assembly, Figure 7.
Page 108 Remove the ELA HOU Remove 2 screws. scan upper assembly. Lift the left hand side of the A/S material dummy upper assem- Unhook both sides of the bly, then slide it to the left to ELA HOU scan upper remove. assembly.
Page 109 Remove 5 screws. Remove the cover M CCD cable. Lift the PMO - cover dummy lower, then side it forward to remove. Figure 13 Cover M CCD cable removal 16. Remove the CBF signal -CCD FFC, Figure 14. Figure 12 PMO - cover dummy lower removal 15.
Page 110 Replacement Replacement is the reverse of the removal procedure. Remove the shaft CCD. Ensure that the ELA HOU - CCD module is installed correctly, Figure 17. ELA HOU - CCD Remove 1 E-clip, then the pulley. module. Remove the ELA HOU - CCD module from the belt.
Page 111: Adj 1.1 Machine Settings
ADJ 1.1 Machine Settings Purpose To correctly set up the machine. Procedure All adjustments to the machines settings are made via GP 2, User Mode Entry or GP 3 Service Mode Entry. Go to the relevant procedure. Repairs and Adjustments March 2004 ADJ 1.1 Work Centre M20 Family...
Page 112 Repairs and Adjustments March 2004 ADJ 1.1 4-40 Work Centre M20 Family...
Page 113 5 Parts List PL 1- Standby Power PL 1.10 SMPS and PBA Main..................PL 2 - User Interface PL 2.10 OPE Assembly (1 of 2) ..................PL 2.11 OPE Assembly (2 of 2) ..................PL 4 - Main Frame, Covers and Drives PL 4.10 Base Frame Assembly..................
Page 114 Parts List March 2004 Work Centre M20 Family...
Page 115: Pl 1.10 Smps And Pba Main
PL 1.10 SMPS and PBA Main Item Part Description – IPR - Shield SMPS Upper (Not Spared) (REP 1.1) 152N11548 CBF Power Switch Grey 152N11550 CBF Harness - Power + HVPS 140N62860 SMPS + HVPS (XE) (REP 1.1) – 140N62859 SMPS + HVPS (NASG/XCL) (REP 1.1) –...
Page 116: Pl 2.10 Ope Assembly (1 Of 2)
PL 2.10 OPE Assembly (1 of 2) Item Part Description – ELA HOU OPE Assembly (Not Spared) (REP 2.1) – Window LCD (Not Spared) 091N80194 Sheet Overlay Center (A) (C20, M20) – 091N80193 Sheet Overlay Center (A) (M20i) – 091N80201 Sheet Overlay Center (A) (French) ((C20, M20)) –...
Page 117: Pl 2.11 Ope Assembly (2 Of 2)
PL 2.11 OPE Assembly (2 of 2) Item Part Description 002N02282 Cover M OPE 018N00193 Indicator (REP 2.1) 029N00355 Rubber Scroll (A) (REP 2.1) 029N00345 Key M Copy (REP 2.1) 029N00356 Rubber Numerical (REP 2.1) 029N00346 Key M E-mail (REP 2.1) 029N00354 Rubber Copy (A) (REP 2.1) 029N00347...
Page 118: Pl 4.10 Base Frame Assembly
PL 4.10 Base Frame Assembly Item Part Description – ELA HOU - Base Frame (Not Spared) – Screw - Taptite (REF: PL 31.10 Item 6) – Screw - Taptite (REF: PL 31.10 Item 6) 009N01467 Spring ETC - Torsion 017N00212 Foot –...
Page 119: Pl 4.15 Main Frame Assembly
PL 4.15 Main Frame Assembly Item Part Description 002N02279 ELA HOU - Frame Main Assembly (REP 4.4) – PMO - Housing Terminal MC2 (P/O PL 4.15 Item 1) – IPR - Terminal Blade (P/O PL 4.15 Item 1) – IPR - Terminal Supply (P/O PL 4.15 Item 1) –...
Page 120: Pl 4.20 Drives Assembly
PL 4.20 Drives Assembly Item Part Description 002N02289 ELA HOU - Drive Assembly (REP 4.1) 127N07298 Motor Step - MCK2 (Main) 152N11554 CBF Harness - Fuser Motor 127N07299 Motor DC - MCK2 (BLDC) 152N11555 CBF Harness - Feed Motor – Gear - Exit/U (P/O PL 4.20 Item 1) –...
Page 121: Pl 4.25 Covers
PL 4.25 Covers Item Part Description 002N02107 MEA Unit - Cover PA Exit Assembly 050N00392 PMO - Tray Extension MP NE – PMO - Cover Paper Exit (P/O PL 4.25 Item 1) (REP 10.3) – PMO - Connect Paper MFP (C20, M20) (Not Spared) –...
Page 122: Pl 5.10 Dadf Assembly (1 Of 5)
PL 5.10 DADF Assembly (1 of 5) Item Part Description 002N02275 ELA HOU - DADF 002N02288 MEA Unit - Cover Open (REP 5.1) – Cover - M Open (P/O PL 5.10 Item – PMO Stopper Exit (P/O PL 5.10 Item 2) –...
Page 123: Pl 5.11 Dadf Assembly (2 Of 5)
PL 5.11 DADF Assembly (2 of 5) Item Part Description – Guide - M SCAN (P/O PL 5.10 Item – Ground - P SCAN Roller (P/O PL 5.10 Item 31) – Ground - P Exit Roller (P/O PL 5.10 Item 31) –...
Page 124: Pl 5.12 Dadf Assembly (3 Of 5)
PL 5.12 DADF Assembly (3 of 5) Item Part Description – MEA Unit - Cover Exit Assembly (P/ O PL 5.10 Item 31) – Cover M Exit (P/O PL 5.12 Item 1) – Spring ETC - White BAR (P/O PL 5.12 Item 1) –...
Page 125: Pl 5.13 Dadf Assembly (4 Of 5)
PL 5.13 DADF Assembly (4 of 5) Item Part Description – MEA Unit Support Pickup Assembly (P/O PL 5.10 Item 31) (REP 5.1) – Pickup Support (P/O PL 5.13 Item – Decurler (P/O PL 5.13 Item 1) – Spring (P/O PL 5.13 Item 1) –...
Page 126: Pl 5.14 Dadf Assembly (5 Of 5)
PL 5.14 DADF Assembly (5 of 5) Item Part Description 002N02285 ELA Unit - Platen Cover (REF: PL 5.10 Item 28) – PMO - Cover Platen (C) (P/O PL 5.14 Item 1) – PMO - Extension Platen (P/O PL 5.14 Item 1) –...
Page 127: Pl 6.10 Lsu
PL 6.10 LSU Item Part Description 122N00234 Unit - LSU (REP 6.1) 152N11549 CBF Harness - LSU – Fan DC (Cardinal) (REF: PL 4.10 Item 17) NOTE: If necessary, refer to GP 20 for the acronym list and cross reference lists of more commonly recognised part names.
Page 128: Pl 7.10 Tray 1 Cassette Assembly
PL 7.10 Tray 1 Cassette Assembly Item Part Description 050N00442 Mec - Cassette Assembly (A4) – 050N00441 Mec- Cassette Assembly (Letter) – Plate Guide Paper (P/O PL 7.10 Item 1) – IPR - Plate K/UP (P/O PL 7.10 Item – IPR Finger Right (P/O PL 7.10 Item –...
Page 129: Pl 7.15 Tray 2 Cassette Assembly (1 Of 2)
PL 7.15 Tray 2 Cassette Assembly (1 of 2) Item Part Description – ELA Unit - SCF (MC2) (REF: PL 31.10 Item 3) – PMO - Cover Top SCF (Not Spared) – ELA HOU - Upper SCF2 (Not Spared) – PMO - Guide Paper Upper SCF (Not Spared) –...
Page 130: Pl 7.16 Tray 2 Cassette Assembly (2 Of 2)
PL 7.16 Tray 2 Cassette Assembly (2 of 2) Item Part Description – ELA HOU - Frame - SCF (MC2) (Not Spared) – PMO - Base Frame - SCF (Not Spared) 140N62874 PBA SCF 152N01992 CBF Harness - SCF 8P –...
Page 131: Pl 8.10 Side Cover Assembly (1 Of 2)
PL 8.10 Side Cover Assembly (1 of 2) Item Part Description – ELA HOU - Side Cover Assembly (Not Spared) 022N02057 MEA Unit - Duplex Assembly (REP 8.2) – Ring - CS (REF: PL 31.10 Item 6) – Gear - Dup Idler 17 (see NOTE 2) –...
Page 132: Pl 8.11 Side Cover Assembly (2 Of 2)
PL 8.11 Side Cover Assembly (2 of 2) Item Part Description 050N00445 MEA Unit - Side SUB Assembly – PMO - Guide DP Side (P/O PL 8.11 Item 1) – Guide Side Push (P/O PL 8.11 Item – PMO - Locker Open (P/O PL 8.11 Item 1) –...
Page 133: Pl 8.15 Feeder Assembly
PL 8.15 Feeder Assembly Item Part Description 022N02056 MEA Unit - Feed Roller Assembly (REP 8.5) – PMO - Frame Feed (P/O PL 8.15 Item 1) – Gear - Feed (P/O PL 8.15 Item 1) – Gear - MP/DUP DRV (P/O PL 8.15 Item 1) –...
Page 134: Pl 8.20 Mp Assembly
PL 8.20 MP Assembly Item Part Description 600N01741 ELA HOU - MP Assembly (REP 8.4) 013N00515 PMO - Bushing Pickup, MP – Ring - E (REF: PL 31.10 Item 6) – Solenoid - MP (P/O PL 8.20 Item 1) 009N01364 Spring - Cam MP –...
Page 135: Pl 8.25 Pickup Assembly
PL 8.25 Pickup Assembly Item Part Description 002N02276 ELA HOU - Pickup Assembly (REP 8.6) – IPR - GND Feed (P/O PL 8.25 Item – IPR - GND Input (P/O PL 8.25 Item – IPR - Guide Input (P/O PL 8.25 Item 1) 130N01207 PBA SUB - Toner TX...
Page 136: Pl 9.10 Toner, Drum Cartridge & Fuser
PL 9.10 Toner, Drum Cartridge & Fuser Item Part Description 113R00671 ELA Unit - OPE Drum Set 106R01048 ELA - Toner Unit Set (XE) – 106R01047 ELA - Toner Unit Set (NASG/XCL) 007N01118 PMO Lock Drive 002N02278 ELA HOU - Fuser Assembly (XE) (REP 10.1) –...
Page 137: Pl 10.10 Exit Assembly
PL 10.10 Exit Assembly Item Part Description 600N01736 MEC - Exit Assembly (REP 10.2) – PMO - Guide - Exit Upper (P/O PL 10.10 Item 1) – PMO - Guide - Exit Lower (P/O PL 10.10 Item 1) – PMO - Guide - Jam Remove (P/O PL 10.10 Item 1) 007N01115 MEC - Roller Exit Drive...
Page 138: Pl 14.10 Ela Hou Scanner Assembly (1 Of 2)
PL 14.10 ELA HOU Scanner Assembly (1 of 2) Item Part Description 002N02274 ELA HOU - Scanner Assembly (C20, M20) (REP 14.1) – 002N02273 ELA HOU - Scanner Assembly (M20i) (REP 14.1) 002N02284 ELA HOU SCAN Upper Assembly (REP 14.1) 019N00797 A/S Material Dummy Upper Assembly (REP 14.1)
Page 139: Pl 14.11 Ela Hou Scanner Assembly (2 Of 2)
PL 14.11 ELA HOU Scanner Assembly (2 of 2) Item Part Description – Shaft CCD (UMAX) (Not Spared) (REP 14.1) 023N00954 Belt - Timing Gear (REP 14.1) 023N00955 Spring ETC - Belt – Ring - E (REF: PL 31.10 Item 6) 140N62872 PBA SUB - D SUB (REP 14.1) –...
Page 140: Pl 31.10 Maintenance/Installation/Removal Kits
PL 31.10 Maintenance/Installation/ Removal Kits Item Part Description – Foreign Interface Device Kit (see NOTE 2) 497N00184 Network Accessory Kit 498N00364 2nd Paper Tray 098N01724 Stand – Repackaging Kit (see NOTE 2) – Common Hardware Kit (see NOTE NOTE: 1. If necessary, refer to GP 20 for the acronym list and cross reference lists of more commonly recognised part names.
Page 141: Part Number Index
Part Number Index Table 1 Part Number Index Part Number Part List Table 1 Part Number Index 009N01466 PL 7.10 Part Number Part List 009N01467 PL 4.10 001N00384 PL 4.25 011N00463 PL 4.15 001N00451 PL 4.25 011N00464 PL 4.25 002N02009 PL 4.25 011N00465 PL 4.25...
Page 142 Table 1 Part Number Index Table 1 Part Number Index Part Number Part List Part Number Part List 029N00350 PL 2.11 120N00393 PL 8.25 029N00351 PL 2.11 PL 7.15 029N00352 PL 2.11 120N00438 PL 5.10 029N00353 PL 2.11 122N00234 PL 6.10 029N00354 PL 2.11 127N01375...
Page 143 Table 1 Part Number Index Part Number Part List 140N62879 PL 1.10 144N00128 PL 1.10 144N00129 PL 1.10 152N01991 PL 4.10 152N01992 PL 7.16 152N11548 PL 1.10 152N11549 PL 6.10 152N11550 PL 1.10 152N11551 PL 1.10 152N11552 PL 14.11 152N11553 PL 14.11 152N11554 PL 4.20...
Page 144 Parts List March 2004 Part Number Index 5-32 Work Centre M20 Family...
Page 145 6 General Procedures and Information GP 1 Engine Test Mode Entry ..................GP 2 User Mode Entry ....................GP 3 Service Mode Entry....................GP 4 Fax Setup....................... 6-11 GP 5 Memory Clear ......................6-11 GP 6 Maintenance ......................6-12 GP 7 Reports ........................6-14 GP 8 Firmware Upgrade ....................
Page 146 General Procedures and Information March 2004 Work Centre M20 Family...
Page 147: Gp 1 Engine Test Mode Entry
GP 1 Engine Test Mode Entry Press Enter. The machine has now entered service (tech) mode. Use the numbered keys to select the relevant test number. Use the left and right keys to Purpose scroll through the available tests, refer to Figure 1. To view details of each test number., To test various functions or components of the machine.
Page 148 Table 1 Test Map Test No. Test Items (Description) Setting Description Setting Description SENSOR TEST CHECK Monitors the status of the Paper Path Sensors and NEXT Go to the top level of Engine test mode. Interlock. ‘1’: Active, ‘0’: Inactive Refer to Table 2 Sensor description for details.
Page 149 Table 1 Test Map Test No. Test Items (Description) Setting Description Setting Description THV SUPPLY 1301V (Not to be used dur- Switches on 1301V to the THV Switches off the voltage to the THV ing service, manufacturing use only) THV ADC READ CHECK Reads and displays the THV ADC value.
Page 150 Figure 1 LCD test sequence General Procedures and Information March 2004 GP 1 Work Centre M20 Family...
Page 151: Gp 2 User Mode Entry
NewZealand / SouthAfrica / Israel / Korea / Network Setup Reset NIC / Configure Network / Netware / K.Xerox / China / India / Asia_STD / Malaysia Use Factory Defaults / Singapore / USA/Canada / Brazil / Chile / Columbia / Mexico / Argentina / Peru / Ger-...
Page 152 Russia / Yugoslavia / Australia / HongKong / NewZealand / SouthAfrica / Israel / Korea / K.Xerox / China / India / Asia_STD / Malaysia / Singapore / USA/Canada / Brazil / Chile / Columbia / Mexico / Argentina / Peru / Ger-...
Page 153: Gp 3 Service Mode Entry
Procedure NewZealand / SouthAfrica / Israel / Korea / K.Xerox / China / India / Asia_STD / Malaysia Press Menu/Exit, #, 1, 9, 3, 4 in sequence. The LCD will display ‘T’ or ‘TECH’. The / Singapore / USA/Canada / Brazil / Chile / machine has now entered service (tech) mode.
Page 154 NewZealand / SouthAfrica / Israel / Korea / Email Setup SMTP Server Setup / Auth User Setup / Auto K.Xerox / China / India / Asia_STD / Malaysia Send to Self / Guest User Access / Default / Singapore / USA/Canada / Brazil / Chile /...
Page 155: Gp 4 Fax Setup
GP 4 Fax Setup GP 5 Memory Clear Purpose Purpose To give details of the fax setup that can be selected in service mode, GP 3: To give details of the memory clear procedure that can be performed in service mode, GP 3: •...
Page 156: Gp 6 Maintenance
GP 6 Maintenance New Drum If the ‘New OPC Error’ message is displayed after initial power on or after closing the cover Purpose after installing a new drum, it makes installing a new drum compulsory. To give details of the maintenance tests or procedures that can be performed in service mode, GP 3: Notify Toner Low •...
Page 157 • ENGINE VER:1.00V Error Rate Pattern Test If the error rate is about to exceed the set value, the Baud rate is automatically lowered, by up to a maximum of 2400 bps, to ensure that the error rate remains below the set level. This procedure is used during manufacturing only.
Page 158: Gp 7 Reports
GP 7 Reports Purpose To give details of the information available in the reports function in service mode, GP 3: • Protocol List • Fax Phonebook • Fax TX • Fax RX • Schedule Jobs • System Data • Fax TX Confirm •...
Page 159: Gp 8 Firmware Upgrade
Junk Fax List GP 8 Firmware Upgrade This list shows specific information about the fax numbers from which the machine will receive Purpose faxes. To give details of the 2 possible firmware upgrade procedures, local and remote: • Local Machine Email TX Report •...
Page 160: Gp 9 Identify Sale Date (M20I Only)
GP 9 Identify Sale Date (M20i Only) GP 10 General Disassembly Precautions Purpose Purpose This function confirms the date that the consumer bought the product and the date that the Use this procedure when disassembling and reassembling components. product was first used. The machine recognizes the first scan page count, print page count etc. Procedure Procedure The close proximity of cables to moving parts makes proper routing essential.
Page 161: Gp 11 Machine Specifications
GP 11 Machine Specifications Table 1 General specifications Specifications are correct at the time of publication. Machine specifications are subject to Item Description change without notice. Refer to the following tables for machine specifications: Memory 4 Mbyte for flash Memory, 32 Mbyte SDRAM •...
Page 162 Table 4 Scanner specifications NOTE: (1) Speed claims based on the test chart: Letter size. SDMP: Single Document Multiple Printout Item Description MDSP: Multiple Document Single Printout Interface IEEE1284 (ECP Support) USB (without HUB Mode) Compatibility TWAIN Standard, WIA(TBD) Table 6 Telephone specifications Optical Resolution (H X V) 600 X 600 dpi Item...
Page 163 Table 9 HVPS Output HVPS Output Voltage Charge Voltage (MHV) -1300V to -1450V DC +/- 5% Supply Voltage -400V to -650V DC +/- 5% Blade Voltage -300V to -550V DC +/- 5% OPC Drum -135V +/- 15% General Procedures and Information March 2004 GP 11 Work Centre M20 Family...
Page 164: Gp 12 Circuit Description
GP 12 Circuit Description Purpose To give information about the machines main circuitry. PBA main NOTE: If necessary, refer to GP 20 for the acronym list and cross reference lists of more com- monly recognised part names. The main circuit that consists of CPU, MFP controller (built in 32bit RISC processor core: ARM946ES) including various I/O device drivers, system memory, scanner, printer, motor driver, PC I/F and FAX transceiver controls the whole system.
Page 165 Figure 1 Main circuit General Procedures and Information March 2004 GP 12 Work Centre M20 Family 6-21...
Page 166: Gp 13 Circuit Operation
GP 13 Circuit Operation Program ROM (Flash Memory) Control Device Purpose Refer to Table 1. To give information about the operation of the machines circuitry: • Power On/Off Reset Table 1 Device • Program ROM (Flash Memory) Control TYPE NO. AM29LU160DB •...
Page 167 NOTE: Refer to the Erase/Program Operations table for Tas and Tah specifications USB (Universal Serial Bus) NS’s USBN9602 is used as the interface IC and 48MHz clock is used. When the data is received through the USB port, EIRQ1 SIGNAL is activated to send interrupt to the CPU, then it directly sends the data to DRAM by IOCS4*&DRAMA (11) SIGNAL through DRAMD (24;31).
Page 168: Gp 14 Scanner Operation
GP 14 Scanner Operation Charge Coupled Device improves productivity and allows a compact design. The machine Purpose uses a color CCD. To give information about the operation of the scanner: • Summary • Minimum Scan Line Time for One Color: 2.5mSec. •...
Page 169 • ABC (Automatic Background Control): Tmin Automatic change. Mixed mode processing for text/photo mixed document. EDF data memory: 2x4Kx16bits = 128Kbits (internal). LAT data memory: 4x4Kx16bits = 256Kbits (external). Scaling of Input Image Scaling factor: • Horizontal direction: 25 ~ 800% by 1% unit. •...
Page 170: Gp 15 Host Interface
GP 15 Host Interface Purpose To give information about the machines interfaces: • Host Interface • USB Interface (Option: Direct Kit/Network Kit) Referred to IEEE 1284 standard. NOTE: If necessary, refer to GP 20 for the acronym list and cross reference lists of more com- monly recognised part names.
Page 171: Gp 16 Engine Controller
GP 16 Engine Controller Purpose To give information about the machines control circuits: • Fuser Control/Thermistor Circuit • Paper Sensing Circuit • LSU Circuit • Fan/Solenoid Actuation Circuit • PTL Actuation Circuit • Motor Actuation Circuit • High Voltage Power Supply NOTE: If necessary, refer to GP 20 for the acronym list and cross reference lists of more com- monly recognised part names.
Page 172 Paper Feeding It receives motor enable signal (2 phase) from CPU and generates bipolar pulse (constant- current) and sends its output to stepping motor input. When the paper is fed into the set and passes through the actuator of the feed sensor unit, transistor inside the photo interrupter will turn on, ‘nFEED’...
Page 173 While the supply roller energized with -450V by HVPS and the developer roller energized with -300V rotate in the same direction, it keeps the toner particles between two rollers sup- plied to OPC drum in negative state by the friction between two rollers. The toner supplied to the developer roller is biased to bias electric potential by the developer roller and transferred to the developing area.
Page 174 BIAS (Supply/Dev/Blade Output Unit) BIAS (Electrification Output Enable) Electrification Output Enable is the electrification output control signal ‘PWM-LOW ACTIVE’.When BIAS-PWM LOW signal is received, Q501 turns on and the steady voltage will be accepted to the non-inverting terminal of OP-AMP 324. As the voltage higher than the inverting reference voltage of OP-AMP, which is set to R506 and R507, OP-AMP output turns high.
Page 175 When THV-EA is 'L', Q302 turns on and the VCE electric potential of Q302 will be formed and The changes in transfer output required by each load is controlled by PWM-DUTY. sends IB to TRANS auxiliary wire through R311, C305 and VR302 via current-restricting resis- tance R314, and eventually Q303 will turn on.
Page 176: Gp 17 Pba Ope Operation
GP 17 PBA OPE Operation Purpose To give information about the operation of the PBA OPE. NOTE: If necessary, refer to GP 20 for the acronym list and cross reference lists of more com- monly recognised part names. Summary The OPE board is separated functionally from the main board and operated by the MICOM (HT48R50) in the board.
Page 177: Gp 18 Pba Liu
GP 18 PBA LIU Refer to Table 1. Purpose Table 1 Tolerance levels To give information about the operation of the PBA LIU: U.S. Usage CTR21 • Summary High Frequency Level -9.0+2.0/-2.5 -7.0 +1.0/-2.0 • DC Matching Part Low Frequency Level -9.0+1.0/-2.0 -11.0+2.5/-2.0 •...
Page 178: Gp 19 Smps Unit Operation
GP 19 SMPS Unit Operation When the power is turned on, TH 1 limits current by it’s high resistance, and when it’s tempera- ture rise, it’s resistance become about Zero ohm. Purpose To give information about the operation of the SMPS (Switching Mode Power Supply): SMC (Switched Mode Control) •...
Page 179: Gp 20 Acronyms And Parts Description List
The following explains how the fixed lamp control circuit works. Logic unit "fuser on" sends trig- GP 20 Acronyms and Parts Description List ger current to triac driver PC3 LED, then the infrared ray is detected by PC3 photo detector. Purpose Next, YC3 triac is conducted.
Page 180 MPR - Machinery Press PL 4.25 Item 7 PMO - tray case, MP MP - Multi purpose tray (bypass tray) PL 8.11 Item 12 XRX - Xerox ELA HOU - MP assembly MP - Multi purpose (bypass) tray PL 8.20 Item 1...
Page 181 Table 1 Acronyms OPE Assembly Refer to Table 3. Acronym Description PL Ref. ELA HOU - scanner assembly ELA - Electrical assembly PL 14.10 Item 1 Table 3 OPE assembly HOU - Housing Part name Commonly known as PL Ref. A/S material - dummy upper A/S - After - service PL 14.10 Item 3...
Page 182 DADF Refer to Table 5. Refer to Table 8. Table 5 DADF Table 8 SCF Part name Commonly known as PL Ref. Part name Commonly known as PL Ref. ELA HOU - DADF DADF assembly PL 5.10 Item 1 ELA unit - SCF Tray 2 assembly PL 7.15 Item 1 MEA unit - cover open...
Page 183 Table 11 MP assembly Scanner Assembly Refer to Table 15. Part name Commonly known as PL Ref. Solenoid - MP Bypass tray feed solenoid PL 8.20 Item 4 Table 15 Scanner assembly PMO - actuator, MP Paper present sensor actuator PL 8.20 Item 12 Part name Commonly known as...
Page 184: Gp 21 Dadf Document Feeding Specifications
GP 21 DADF Document Feeding Specifications GP 22 Paper and Media Specifications Purpose Purpose To list the specifications of the documents that can be fed through the DADF. To list the paper and media size specifications. Specifications Specifications Refer to Table 1. NOTE: Ensure that the paper tray settings match the paper size in the tray.
Page 185: Gp 23 Service Log
GP 23 Service Log • For Edoc a PDF version is available on the CD-Rom. In File Manager or Explorer, select the CD-ROM drive (g:\directory). Service Log If “g:\” is not the CD-ROM drive, substitute the drive letter for the CD-ROM drive. Use this service log to record all service procedures.
Page 186 General Procedures and Information March 2004 GP 23 6-42 Work Centre M20 Family...
Page 187 7 Wiring Data Wiring Diagrams......................Wiring Data March 2004 Work Centre M20 Family...
Page 188 Wiring Data March 2004 Work Centre M20 Family...
Page 189: Wiring Diagrams
Wiring Diagrams Purpose Wiring diagrams are an aid to trace wiring faults. Wiring Diagrams are used to complement the fault analysis information contained in the relevant RAP. NOTE: If necessary, refer to GP 20 for the acronym list and cross reference lists of more com- monly recognised part names.
Page 190 Wiring Diagram 1 Figure 1 Wiring Diagram 1 Wiring Data March 2004 Wiring Diagrams Work Centre M20 Family...
Page 191 Wiring Diagram 2 Figure 2 Wiring Diagram 2 Wiring Data March 2004 Wiring Diagrams Work Centre M20 Family...
Page 192 Wiring Diagram 3 Figure 3 Wiring Diagram 3 Wiring Data March 2004 Wiring Diagrams Work Centre M20 Family...
Page 193 Wiring Diagram 4 Figure 4 Wiring Diagram 4 Wiring Data March 2004 Wiring Diagrams Work Centre M20 Family...
Page 194 Wiring Diagram 5 Figure 5 Wiring Diagram 5 Wiring Data March 2004 Wiring Diagrams Work Centre M20 Family...
Page 195 Wiring Diagram 6 Figure 6 Wiring Diagram 6 Wiring Data March 2004 Wiring Diagrams Work Centre M20 Family...
Page 196 Wiring Data March 2004 Wiring Diagrams 7-10 Work Centre M20 Family...
Page 197 8 Accessories ACC 1 PBA Foreign Device Checkout ................Accessories March 2004 Work Centre M20 Family...
Page 198 Accessories March 2004 Work Centre M20 Family...
Page 199 ACC 1 PBA Foreign Device Checkout Procedure Go to the OF3 Use Auxiliary Access RAP. Accessories March 2004 ACC 1 Work Centre M20 Family...
Page 200 Accessories March 2004 ACC 1 Work Centre M20 Family...

Xerox WorkCentre M20 Service Manual

1 Service Call Procedures

3 Image Quality

4 Repairs and Adjustments

5 Parts List

6 General Procedures and Information

Quick Links

Chapters

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Summary of Contents for Xerox WorkCentre M20

Table of Contents