Rap 26 Inoperative Keypad; Rap 27 Erratic Printer Operation - Xerox DocuPrint N2125 Service Manual

RAP 26 Inoperative Keypad

Control Panel is not operative.
Procedure
Enter Diagnostics and select the Component Test. Scroll to Sensor Input test and press Enter
[4]. The printer enters the Diagnostic Mode to the Sensor Input Level.
Y N
Disconnect P/J18 on the System Controller PWB. Measure the voltages listed in
between P18 on the System Controller PWB and frame ground.
Table 1 Keypad
Pin
1
2
3
4
5
6
7
8
All the voltages are correct.
Y N
Replace the System Controller PWB
Disconnect P/J412 from the Control Panel. Measure continuity on all wires between P/
J412 and P/J18. All checks are good.
Y N
Replace the wiring harness (PL
Replace the Control Panel Assembly
Keypad numbers (1-7) increment the counter. Keypad number [4] enters the test and (0)
exits the test.
Y N
Replace the Control Panel Assembly
Replace the System Controller PWB (REP
Initial Issue
DocuPrint N2125
Voltage
3.3 VDC
0 VDC
1.4 VDC
0 VDC
3.3 VDC
1.4 VDC
3.3 VDC
0 VDC
(REP 9.2).
1.1).
(PL 1.1).
(PL 1.1).
9.2).

RAP 27 Erratic Printer Operation

Procedure
Disconnect all host cables. Enter diagnostics and select Test Print. Run 15 to 20 test prints.
The printer generates test prints.
Y N
Switch the printer power off. Disconnect P/J PN1 from the LVPS Assembly. Switch the
printer power on. Check the voltage between P/J281 pin 7 and frame ground. The
Table 1 age is +5.0VDC.
Y N
Switch the printer power off and reconnect PN1. Go to
Replace the Print Engine Controller PWB
Y N
Problem solved.
Go to RAP 44.
The printer RESETS while generating test print.
Y N
Replace the Print Engine Controller PWB
Y N
Problem solved
Notify customer the cause of the trouble seems to be a communication problem between
the host computer and the printer. The customer should contact Customer Support.
Go to RAP 28.
02/2000
2-29
RAP 28.
(REP 9.3). The problem still appears.
(REP 9.3). The problem still appears.
Status Indicator Repair Analysis Procedures
RAP 26 , RAP 27
volt-