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Make/Model Information:

  • Brand:   Xerox
  • Models included:
    • Xerox WorkCentre Pro 412

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English
  • Number of pages:   192
  • File size:  ∼ 5.06  MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMXX-1049

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1. Introduction
2. Service Call Procedures
3. Precautions
4. Specifications
5. Circuit Description
6. Disassembly
7. Maintenance & Troubleshooting
8. Exploded Views and Parts List
9. Electrical Parts List
10. Block Diagram
11. Connection Diagram
12. Schematic Diagrams
Contents
SERVICE
MANUAL
Part Number 708P86391
WorkCentre Pro 412
Launch Issue
Table of Contents
WorkCentre Pro 412
Launch Issue
TOC-1 August 2001
Table of Contents
1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-1 Organisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-2 Warnings, Cautions and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-3 Safety Procedures and Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-4 Heath and Safety Incident Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1-5 Translation of Warnings and Precautions . . . . . . . . . . . . . . . . . . . . . . . 1-6
2. Service Call Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
SCP 1 Initial Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
SCP 2 First Call Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
SCP 3 Normal Call Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
SCP 4 Fault Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
SCP 5 Final Actions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
3. Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
4. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-1 Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2 Facsimile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-3 Scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-4 Copier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-5 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-6 Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-7 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-8 Environmental Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-9 Machine Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
5. Circuit Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5-1 Main PBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5-2 Circuit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5-3 Scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
5-4 Host Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
5-5 Engine Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
5-6 OPE PBA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34
5-7 LIU PBA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35
5-8 SMPS (Switching Mode Power Supply) Unit. . . . . . . . . . . . . . . . . . . . . 5-36
6. Disassembly and Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6-1 General Precautions on Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6-2 Rear Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6-3 Scanner Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6-4 ADF Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
6-5 OPE Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6-6 Side Cover Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
6-7 Fuser Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
6-8 Exit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
6-9 Cover Paper Exit Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
6-10 Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
6-11 SMPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
6-12 LSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
6-13 Main Frame Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
6-14 Cover Exit Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
6-15 MP Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
6-16 Feed Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
6-17 Pick Up Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
6-18 Main PBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
Table of Contents
WorkCentre Pro 412
Launch Issue
TOC-2 August 2001
7. Maintenance & Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7-1 Preventative Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7-2 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7-3 Scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
7-4 FAX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
7-5 Print Quality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13
7-6 Malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30
8. Exploded View & Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8-1. Main Exploded View & Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8-2. Platen Ass’y Exploded View & Parts List . . . . . . . . . . . . . . . . . . . . . . . 8-4
8-3. ADF ASS’Y Exploded View & Parts List. . . . . . . . . . . . . . . . . . . . . . . . 8-6
8-4. Side Cover Ass’y Exploded View & Parts List . . . . . . . . . . . . . . . . . . . 8-10
8-5. Cassette Ass’y Exploded View & Parts List . . . . . . . . . . . . . . . . . . . . . 8-14
8-6. Exit Ass’y Exploded View & Parts List . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
8-7. Feeder Ass’y Exploded View & Parts List . . . . . . . . . . . . . . . . . . . . . . 8-18
8-8. MP Ass’y Exploded View & Parts List . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
8-9. Base Frame Exploded View & Parts List . . . . . . . . . . . . . . . . . . . . . . . 8-22
8-10. Pick-up Ass’y Exploded View & Parts List . . . . . . . . . . . . . . . . . . . . . 8-24
8-11. Drive Ass’y Exploded View & Parts List . . . . . . . . . . . . . . . . . . . . . . . 8-26
8-12. Main Frame Ass’y Exploded View & Parts List . . . . . . . . . . . . . . . . . 8-28
8-13. FuserAss’y Exploded View & Parts List . . . . . . . . . . . . . . . . . . . . . . 8-30
9. Electrical Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
9-1 Main PBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
10. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
11. Connection Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
12. Schematic Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1
12-1 Main Circuit Diagram (1 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1
12-2 Main Circuit Diagram (2 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2
12-3 Main Circuit Diagram (3 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3
12-4 Main Circuit Diagram (4 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-4
12-5 Main Circuit Diagram (5 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-5
12-6 Main Circuit Diagram (6 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-6
12-7 Main Circuit Diagram (7 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-7
12-8 Main Circuit Diagram (8 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-8
12-9 Main Circuit diagram (9 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-9
12-10 Main Circuit Diagram (10 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-10
12-11 Main Circuit Diagram (11 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-11
12-12 Main Circuit Diagram (12 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-12
12-13 Main Circuit Diagram (13 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13
12-14 Main Circuit Diagram (14 of 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-14
12-15 LIU Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-15
12-16 OPE Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-16
12-17 HVPS Circuit Diagram (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-17
12-18 HVPS Circuit Diagram (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-18
12-19 SMPS (110) Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-19
12-20 SMPS (220) Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-20
12-21 ADF Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-21
12-22 Flat Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-22
12-23 PTL Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-23
12-24 Sensor Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-24
12-25 Toner RX Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-25
12-26 Toner TX Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-26
Disassembly and Reassembly
WorkCentre Pro 412
Launch Issue
6-1 August 2001
6. Disassembly and Reassembly
6-1 General Precautions on Disassembly
WARNING
When you disassemble and reassemble components, you must use extreme care. The close proximity
of cables to moving parts makes proper routing essential. If components are removed, any cables dis-
turbed by the procedure must be restored as close as possible to their original positions. Before
removing any component from the machine, note the cable routing that will be affected.
Whenever servicing the machine, you must perform as follows:
1. Check to verify that documents are not stored in memory.
2. Unplug the power cord.
3. Use a flat and clean surface.
4. Replace only with authorized components.
5. Do not use force to remove or install plastic components.
6. Make sure all components are correctly installed.
6-2 Rear Cover
1. Remove the six screws securing the rear cover.
2. Separate the rear cover from the base frame and
scanner assembly.
Maintenance & Troubleshooting
WorkCentre Pro 412
Launch Issue
7-1 August 2001
7. Maintenance & Troubleshooting
7-1 Preventative Maintenance
The cycle period outlined below is a general guideline for maintenance. The example list is for an average
usage of 50 transmitted and received documents per day. Environmental conditions and actual use will vary
these factors. The cycle period given below is for reference only.
7-2 Diagnostics
This section describes methods and procedures to isolate the cause of a malfunction in the machine. This
machine displays diagnostic information on the LCD. In addition, it can perform a series of tests that allow the
machine to observe individual machine functions.
7-2-1 Error Messages.
COMPONENT REPLACEMENT CYCLE
ADF roller 20,00 pages
Feed roller 50,000 pages
Transfer 50,000 pages
Fuser 50,000 pages
Toner CRU 6,000 pages
Drum DRU 15,000 pages
Error Message Description Solution
RETRY REDIAL? The machine is waiting for the
programmed interval to automat-
ically re-dial.
You can press START to imme-
diately re-dial, or STOP to can-
cel the re-dial operation.
COMM. ERROR A problem with the FAX commu-
nications has occurred.
Try again.
DOCUMENT JAM Loaded document has jammed
in the feeder when document
jam occurred at ADF module
Clear the document Jam.
DOOR OPEN The side cover is not securely
latched.
Close the cover until it clicks in


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