Rap 35 Stack Full Sensor - Xerox DocuPrint N2025 Service Manual

A B
Replace the Print Engine Controller PWB (REP 8.5).
It appears that the Tray 1 No Paper Sensor is working correctly. If a problem persists, replace
the Print Engine Controller PWB (REP 8.5).
Status Indicator Repair Analysis Procedures
RAP 34, RAP 35

RAP 35 Stack Full Sensor

Procedure
Enter Diagnostics and select Component Test. Scroll to Sensor Input test and press Enter.
Actuate and deactuate the Stack Full Sensor Actuator. The number on the LCD increments
each time you press and release the actuator.
Y N
Visually inspect the Stack Full Sensor Actuator. The actuator moves freely and is in
good condition (not broken or damaged).
Y N
Replace the Stack Full Actuator (REP 5.3).
Switch the printer power off. Remove the Left Side Cover (REP 1.1) and the Print Engine
Controller PWB Cover (REP 8.5). Disconnect P/J19 from the Print Engine Controller
PWB. Switch the printer power on. On the Print Engine Controller PWB, measure the volt-
age between P19 pin 11 and frame ground and between P19 pin 13 and frame ground.
Both voltages are +3.3VDC.
Y N
Measure the voltage between P/J16 pin 4 and frame ground. The
+3.3VDC.
Y N
Replace the LVPS (REP 8.6).
Replace the Print Engine Controller PWB (REP 8.5).
Switch the printer power off. Reconnect P/J19 to 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, measure the voltage between P/J19 pin 13 and frame
ground. There is +3.3VDC between P19 pin 13 and frame ground when the Stack Full
Sensor is deactuated and 0.0VDC when actuated.
Y N
Switch the printer power off. Open the Rear Cover. Disconnect P/J527 (3-pin con-
nector on HVPS Cover). Switch the printer power on. Measure the voltage between
P/J527 pin 3 and frame ground and between P/J527 pin 1 and frame ground. Both
voltages are +3.3VDC.
Y N
Switch the printer power off. Remove the HVPS Cover (REP 8.2). Measure the
resistance between P/J502 and P/J527 as follows:
• J527-1 and J502-1
• J527-2 and J502-2
• J527-3 and J502-3
There is continuity between each of the pins.
Y N
Repair or replace the harness, as necessary (PL 9.1).
Disconnect P/J501 from the Duplex Interface PWB and P/J19 from the Print
Engine Controller PWB. Measure the resistance between P/J501 and P/J19 as
follows:
• J501-1 and J19-13
• J501-2 and J19-12
• J501-3 and J19-11
A B C
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voltage is
Initial Issue
DocuPrint N2025/N2825