03/02
1.1 Trimming
WorkCentre 423/428
1-3
CHAPTER 1 SERVICE CALL PROCEDURE
1.1 Trimming
Perform trimming on WorkCentre Pro 423/428 at eachservice call. This helps to
maintain optimum machine performance.
1.1.1 Trimming Procedure
1. Pre-work check
l
Make several copies of the test chart (499T247) and check the copy quality.
l
Make a black copy (Chain: 23, Function: 11) and a blank copy (Chain: 23,
Function: 10) in Diagnostic. (C/E) mode.
Black copy: Check for no darkness
irregularity or fusing fault.
Blank copy: Check for no drum scratch or smearing.
2. Machine internal cleaning
l
Wipe off toner and paper dust from the paper path. (Clean the operating
section especially well.)
3. IIT cleaning
l
Clean the platen glass (front surface) and platen cushion with a lint-free
cloth.
l
Clean the reflector, platen glass (back surface), mirror, and lens with a lint-
free cloth.
4. DADF cleaning
l
Clean the Pickup Roll, Separation Roll, and Platen Glass with a damp cloth.
5. Check the history of periodic replacement parts (consumable parts) and
replace necessary parts.
l
The history can be checked in Diagnostic. (C/E) mode.
6. Safety check
l
Check the power plug for secure connection and the power cord and plug
for no damage.
7. Post-work check
l
Check the mechanical operations.
l
Check the copy quality.
l
Check the counters.
1.1.2 Consumables and consumable parts
For consumables and consumable parts, check the history of copying and feeding at
trimming and replace necessary items. The history can be checked in Diag. (C/E)
mode. (See Chapter 2, "Diagnostic Mode.")
<Drum Unit>
Consumables
Replacement interval
Remarks
Drum Unit
24K prints
A message is displayed when
replacement is due
<Main Unit>
Consumable parts
Replacement interval
Remarks
Tray 1 (Feed Roll)
600K feed
After replacement, clear the Tray 1 feed
counter. (Chain:30 Function:6)
Tray 1 (Retard Roll)
600K feed
After replacement, clear the Tray 1 feed
counter. (Chain:30 Function:6)
Tray 2 (Feed Roll)
600K feed
After replacement, clear the Tray 2 feed
counter. (Chain:30 Function:7)
Tray 2 (Retard Roll)
600K feed
After replacement, clear the Tray 2 feed
counter. (Chain:30 Function:7)
Tray 3 (Feed Roll)
600K feed
After replacement, clear the Tray 3 feed
counter. (Chain:30 Function:8)
Tray 3 (Retard Roll)
600K feed
After replacement, clear the Tray 3 feed
counter. (Chain:30 Function:8)
Tray 4 (Feed Roll)
600K feed
After replacement, clear the Tray 4 feed
counter. (Chain:30 Function:9)
Tray 4 (Retard Roll)
600K feed
After replacement, clear the Tray 4 feed
counter. (Chain:30 Function:9)
MSI (Feed Roll)
600K feed
After replacement, clear the MSI feed
counter. (Chain:30 Function:12)
MSI (Retard Roll)
600K feed
After replacement, clear the MSI feed
counter. (Chain:30 Function:12)
Fuser Assy
200K copying
BTR
200K copying
<DADF>
Consumable parts
Replacing interval
Remarks
Pickup Roll
90K feed
Number of sheets scanned by DADF
(Chain:30 Function:3)
Feed Roll
90K feed
Number of sheets scanned by DADF
(Chain:30 Function:3
Separation pad
90K feed
Number of sheets scanned by DADF
(Chain:30 Function:3)
Summary of Contents for WorkCentre Pro 423
Page 2: ......
Page 3: ...WorkCentre Pro 423 428 6HUYLFH 0DQXDO...
Page 6: ......
Page 8: ......
Page 9: ...INTRODUCTION...
Page 10: ......
Page 24: ...WorkCentre 423 428 03 02 INTRODUCTION 14 7 Translation of Warnings...
Page 25: ...CHAPTER 1 SERVICE CALL PROCEDURE...
Page 26: ......
Page 28: ...WorkCentre Pro 423 428 1 2 CHAPTER 1 SERVICE CALL PROCEDURE 03 02 1 1 Trimming...
Page 31: ...CHAPTER 2 TROUBLESHOOTING...
Page 32: ......
Page 76: ...WorkCentre Pro 423 428 2 44 CHAPTER 2 TROUBLESHOOTING 03 02 2 3 Level 2 Troubleshooting...
Page 243: ...CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
Page 244: ......
Page 273: ...CHAPTER 4 DISASSEMBLY ASSEMBLY AND ADJUSTMENT...
Page 274: ......
Page 329: ...CHAPTER 5 PARTS LIST...
Page 330: ......
Page 415: ...03 02 5 2 Parts List WorkCentre Pro 423 428 5 85 CHAPTER 5 PARTS LIST...
Page 416: ...CHAPTER 6 GENERAL...
Page 417: ......
Page 456: ...CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
Page 457: ......
Page 476: ...CHAPTER 8 ACCESSORIES...
Page 477: ......
Page 535: ...WorkCentre Pro 423 428 8 58 CHAPTER 8 ACCESSORIES 03 02 8 22 Stamp Kit Red...
Page 536: ...CHAPTER 9 BSD Block Schematic Diagram...
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