Rap 52 Low Paper Tray 2 (Or Tray 3) 550 Sheet Feeder; Rap 53 550 Sheet Feeder Feed Clutch - Xerox N2125N - DocuPrint B/W Laser Printer Service Manual

RAP 52 Low Paper Tray 2 (or Tray 3) 550 Sheet Feeder

Tray 2 and/or Tray 3 have low paper.
Procedure
Fill the affected paper tray with fresh paper. The Error Code is still displayed.
Y N
Problem solved.
Remove the paper tray from affected Feeder Assembly. Manually push up and release the low
paper actuator. The low paper actuator moves smoothly up and down.
Y N
Inspect the Low Paper Actuator. Repair or replace as required.
Enter Diagnostics and select Component Test. Scroll to Sensor Input test and press Enter.
Press and release the Low Paper Actuator. The number on the LCD increments each time
you press and release the actuator.
Y N
Switch the printer power off. Remove the Left Interface Cover
1.2), and the Left Plate Assembly (REP
Engine Controller PWB, check the voltage between P/J33 pin 8 and frame ground. The
voltage is 3.3VDC.
Y N
On the Print Engine Controller PWB, check the voltage between P/J28 pin 10 and
frame ground. The voltage is 3.3VDC.
Y N
Replace the LVPS (REP 9.5).
Replace the Print Engine Controller PWB
Enter diagnostics and select Component Test. Scroll to Sensor Input test and press Enter.
On the Print Engine Controller PWB, for Tray 2, check the voltage between P/J33 pin 9
and frame ground; for Tray 3, check the voltage between P/J33 pin 10 and frame ground.
Check the voltage as you actuate the Low Paper Sensor. The voltage changes from
3.3VDC to 0.0VDC.
Y N
Replace the Low Paper Sensor
sists, replace the Feeder PWB (REP
Replace the Print Engine Controller PWB
Replace the Print Engine Controller PWB
Initial Issue
DocuPrint N2125
(REP 1.1), Left Cover
1.11). Switch the printer power on. On the Print
(REP 9.3).
(REP 11.14) for the affected tray. If the problem per-
11.9) then the Size PWB (REP 11.19).
(REP 9.3).
(REP 9.3).

RAP 53 550 Sheet Feeder Feed Clutch

The 550 Sheet Feeder is not feeding paper or not feeding paper at the correct time.
Procedure
Enter Diagnostics and select Component Test. Scroll to Confirm Tray 2 Feed Clutch or Confirm
Tray 3 Feed Clutch and press Enter. You can hear the clutch energize.
Y N
Switch the printer power off. Remove the Left Interface Cover
1.2), and the Left Plate Assembly
Test. Scroll to Confirm Tray 2 Feed Clutch or Confirm Tray 3 Feed Clutch. On the Print
Engine Controller PWB, for Tray 2, check the voltage between P/J33 pin 13 and frame
ground; for Tray 3, check the voltage between P/J33 pin 14 and frame ground. The volt-
age is +24VDC.
Y N
Remove the Sheet Feeder Drive Assembly
connect P/J651 from the Feed Clutch. Measure the resistance between the two pins
on the feed clutch. The resistance is 140 to 170 ohms.
(REP Y N
Replace the Paper Feed Clutch
Replace the Feeder PWB
(REP 11.19).
Press the Enter key. The voltage drops from +24VDC to 0.0VDC.
Y N
Replace the Print Engine Controller PWB
Replace the Paper Feed Clutch
Remove the Sheet Feeder Drive Assembly
Feed Rolls for contamination and wear. The Paper Feed Rolls are clean and in good condi-
tion.
Y N
Replace the Paper Feed Rolls
Check the Paper Feed Assembly for binding, obstructions, or contamination. The feed assem-
bly is clean and in good condition.
Y N
Clean, repair, or replace as necessary
If the problem persists, replace the following in order until the problem is found:
• Print Engine Controller PWB
• Feeder PWB (REP 11.9).
• Size PWB (REP 11.19)
• Paper Feed Clutch (REP
02/2000
2-45
manuals4you.com manuals4you.com
(REP
(REP 1.11). Enter diagnostics and select Component
(REP 11.6) for the affected feeder. Dis-
(REP 11.10).
(REP 11.9). If the problem persists, replace the Size PWB
(REP 9.3).
(REP 11.10).
(REP 11.6) for the affected feeder. Check the Paper
(REP 11.11).
(REP 11.12).
(REP 9.3).
11.10).
Status Indicator Repair Analysis Procedures
RAP 52 , RAP 53
1.1), Left Cover (REP