Rap 73 Oct Sensor - Xerox DocuPrint N2025 Service Manual

RAP 73 OCT Sensor

Procedure
Enter Diagnostics and select Component Test. Scroll to Sensor Input test and press Enter.
Actuate and deactuate the OCT Sensor The Number on the LCD increments each time you
press and release the actuator.
Y N
Switch the power off. Remove the Left Side Cover (REP 1.1). Remove the Print Engine
Controller PWB Cover (REP 8.5). Disconnect P/J19 from the Print Engine Controller
PWB. Switch the printer power on. Measure the voltage between P19 pin 11 and frame
ground and P19 pin 4 and frame ground. Both voltages are 3.2VDC.
Y N
Measure the voltage between P/J16 pin 4 on the Print Engine Controller PWB and
frame ground. The voltage is 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 P19 pin 4 and frame
ground. There is +3.3VDC between P19 pin 4 and frame ground when the OCT Sen-
sor is deactuated and 0.0VDC when actuated.
Y N
Switch the printer power off. Remove the HVPS Cover (REP 1.6). Enter Diagnostics
and select Component Test. Scroll to Sensor Input test and press Enter. On the
Duplex Interface PWB, measure the voltage between P/J504 pin 4 and frame
ground. There is 3.3VDC between P/J504 pin 4 and frame ground when the
OCT Sensor is deactuated and 0.0VDC when actuated.
Y N
Switch the power off. Remove the OCT Front Cover (REP 10.4). Enter Diagnos-
tics and select Component Test. Scroll to Sensor Input test and press Enter. On
the OCT PWB, measure the voltage between P/J514 pin 4 and frame ground.
There is 3.3VDC between P/J514 pin 4 and frame ground when the OCT
Sensor is deactuated and 0.0VDC when actuated.
Y N
Switch the printer power off. Measure the resistance between P/J504 and
P/J514 as follows:
• J504 - 1 and J514 - 1
• J504 - 2 and J514 - 2
• J504 - 3 and J514 - 3
• J504 - 4 and J514 - 4
• J504 - 5 No Connection
• J504 - 6 and J514 - 6
• J504 - 7 and J514 - 7
• J504 - 8 and J514 - 8
• J504 - 9 and J514 - 9
There is continuity between each of the pins.
A B C D
Status Indicator Repair Analysis Procedures
RAP 73
A B C D
Y N
Repair or replace the STK-O-Harness Assembly (PL 10.2) and the
SK-1 Harness Assembly (PL 9.1).
On the OCT PWB, measure the voltage between P/J520 pin 2 and frame
ground. There is 3.3VDC between P/J520 pin 2 and frame ground
when the OCT Sensor is deactuated and 0.0VDC when actuated.
Y N
Replace the OCT Sensor (PL 10.2).
Replace the OCT PWB (PL 10.2).
Replace the Duplex Interface PWB (PL 13.1).
Replace the Duplex Interface PWB (PL 13.1).
Replace the Print Engine Controller PWB (REP 8.5).
It appears that the OCT Sensor is working correctly. If the problem persists, replace the Print
Engine Controller PWB (REP 8.5).
02/2000
2-66
Initial Issue
DocuPrint N2025/N2825