Rap 41 Mbf Feed Solenoid; Status Indicator Repair Analysis Procedures; Rap 42 System Controller Isolation - Xerox DocuPrint N2125 Service Manual

RAP 41 MBF Feed Solenoid

Procedure
Enter Diagnostics and select Component Test. Scroll to Confirm MBF Feed Solenoid and press
Enter. You can hear the MBF Feed Solenoid energize.
Y N
Switch the printer power off. Remove the Left Interface Cover
1.2), and the Left Plate Assembly (REP
troller PWB. Measure the resistance between pins 6 and 12 on the disconnected plug.
The resistance is approximately 75 to 95 ohms.
Y N
Remove the Front Cover (REP
P/J44 from the Connector PWB. Measure the resistance between pins 1 and 2 on
the disconnected plug. The resistance is approximately 75 to 95 ohms.
Y N
Replace the MBF Feed Solenoid
Replace the Connector PWB
Reconnect P/J23. Switch the printer power on. Check the voltage between P/J23 pin 6
and frame ground. The voltage is +24VDC.
Y N
Replace the Print Engine Controller PWB
Enter Diagnostics and select Component Test. Scroll to Confirm MBF Feed Solenoid.
Check the voltage between P/J23 pin 12 and frame ground. Press Enter. The
drops from +24VDC to 0.0VDC when you press Enter.
Y N
Replace the Print Engine Controller PWB
Replace the MBF Feed Solenoid (REP
Switch the printer power off. Open the Front Cover and remove the Print Cartridge. With the
Front Cover open, cheat the Front Cover Interlock. Enter Diagnostics and select Component
Test. Scroll to Main Motor and press Enter. Scroll to Confirm MBF Feed Solenoid and press
Enter. The MBF Feed Rolls make one complete revolution then stop.
Y N
Replace the MBF Feed Solenoid (REP
The MBF Feed Solenoid appears to operate correctly. If the problem persists, replace the Print
Engine Controller PWB (REP 9.3).

Status Indicator Repair Analysis Procedures

RAP 41 , RAP 42
(REP 1.1), Left Cover
1.11). Disconnect P/J23 on the Print Engine Con-
1.6) and the Left Front Cover (REP 1.7). Disconnect
(REP 4.9).
(REP 9.7).
(REP 9.3).
(REP 9.3).
4.9)
4.9).

RAP 42 System Controller Isolation

Procedure
Switch the printer power off. Disconnect all cables connected to the rear of the System Control-
ler PWB. Remove the Left Interface Cover
Controller PWB. Switch the printer power on. The printer boots up correctly and Ready is
(REP displayed on the Control Panel (if no options are installed, follow the No path).
Y N
Switch the printer power off. Remove then reinstall the System Controller PWB
to reseat the connection with the Print Engine Controller PWB. Switch the printer power
on. The printer boots up correctly and Ready is displayed on the Control Panel.
Y N
Replace the System Controller PWB
Problem Solved.
Switch the printer power off. Reinstall one of the removed options or cables. Switch the printer
power on. The printer boots up correctly and Ready is displayed on the Control Panel.
Y N
Replace the option or cable just installed.
Repeat the last step with the next option or cable until the problem is found.
voltage
02/2000
2-38
(REP 1.1). Remove all options from the System
(REP
(REP 9.2).
Initial Issue
DocuPrint N2125
9.2)