Xerox WorkCentre Pro 423 Service Manual page 294

WorkCentre Pro 423/428
2. Remove the Exit Chute Assembly. (Figure-1)
1) Remove the screws (3).
2) Remove the Exit Chute Assembly.
(Figure-1) j0hn4604
4-20 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT
03/02
3. Remove the Heater Rod. (Figure-2)
1) Remove the screws (2).
2) Remove the Heater Rod together with the Heat
Roll.
3) Pull out the Heater Rod.
(Figure-2) j0hn4605
Installation
Procedure
1. Perform the removal steps in reverse order.
4.2 Disassembly and Assembly
7. Electrical
REP 7.2.1 MCU/SW PWB Assembly
Ref. PL: PL7.2
Replacement
On printer or Fax-equipped machines, ensure that
outstanding jobs have cleared before servicing or
interrupting the power to the machine as follows:.
• FAX equipped machines: Ensure that the "Job in
Memory" indicator on the control panel goes out.
Press "Job Status:Stop" button and confirm that the
job has cleared from the "Current Jobs" folder.
• Printer machines: Ensure that "Ready to print or
fax" is indicated on the printer control panel.
CAUTION
Be careful not to damage parts by static electricity.
Electronic parts may be damaged by static electricity. Be
sure to wear a wristband when handling electronic parts. If
no wristband is available, touch the metal frame before work
to eliminate static electricity as far as possible.
Note If the replacement of IIT/IPS PWB (PL3.1)
also becomes necessary, do this work first.
1.Before replacement, take a note of the IOT
adjustment and setting values stored in NVM of
MCU/SW PWB. (After replacement, enter the
adjustment and setting values into MCU/DSW
PWB.)
2.If necessary, take a note of the contents of IOT-
related HFSI counter, FAIL/JAM history, and
FAIL/JAM counter.
WARNING
Switch off the machine and disconnect the
power cord.
3.Replace the MCU/SW PWB.
4.Extract all the paper trays.
Ref. This is to prevent printing immediately
after power-on.
5.Connect the power cable and turn the power on.