Trimming Procedure - Xerox WorkCentre Pro 423 Service Manual

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
Drum Unit 24K prints
WorkCentre 423/428
Remarks
A message is displayed when
replacement is due
<Main Unit>
Consumable parts Replacement interval
Tray 1 (Feed Roll) 600K feed
Tray 1 (Retard Roll) 600K feed
Tray 2 (Feed Roll) 600K feed
Tray 2 (Retard Roll) 600K feed
Tray 3 (Feed Roll) 600K feed
Tray 3 (Retard Roll) 600K feed
Tray 4 (Feed Roll) 600K feed
Tray 4 (Retard Roll) 600K feed
MSI (Feed Roll) 600K feed
MSI (Retard Roll) 600K feed
Fuser Assy 200K copying
BTR 200K copying
<DADF>
Consumable parts Replacing interval
90K feed
Pickup Roll
Feed Roll 90K feed
90K feed
Separation pad
03/02
1-3 CHAPTER 1 SERVICE CALL PROCEDURE
Remarks
After replacement, clear the Tray 1 feed
counter. (Chain:30 Function:6)
After replacement, clear the Tray 1 feed
counter. (Chain:30 Function:6)
After replacement, clear the Tray 2 feed
counter. (Chain:30 Function:7)
After replacement, clear the Tray 2 feed
counter. (Chain:30 Function:7)
After replacement, clear the Tray 3 feed
counter. (Chain:30 Function:8)
After replacement, clear the Tray 3 feed
counter. (Chain:30 Function:8)
After replacement, clear the Tray 4 feed
counter. (Chain:30 Function:9)
After replacement, clear the Tray 4 feed
counter. (Chain:30 Function:9)
After replacement, clear the MSI feed
counter. (Chain:30 Function:12)
After replacement, clear the MSI feed
counter. (Chain:30 Function:12)
Remarks
Number of sheets scanned by DADF
(Chain:30 Function:3)
Number of sheets scanned by DADF
(Chain:30 Function:3
Number of sheets scanned by DADF
(Chain:30 Function:3)
1.1 Trimming