Xerox N2125N - DocuPrint B/W Laser Printer Service Manual page 44

RAP 24 Inoperative Printer
The main power cannot be switched on.
Procedure
Ensure the power cord is properly connected to the wall outlet and to the Power Receptacle of
the printer. The problem still exists.
Y N
Problem solved.
Perform RAP 1, then return here. RAP 1 indicated that correct AC voltage is being sup-
plied to the printer.
Y N
Notify customer that the power is out of specification.
Perform RAP 2, then return here. RAP 2 indicated that correct DC voltage is being sup-
plied to the printer.
Y N
Rap 2 instructed you to replace a component.
Y N
Perform RAP 3.
Replace component as necessary.
On the System Controller PWB, check the voltage on P/J13 between pins 1 and 2. The
age is 3.3VDC.
Y N
Switch the printer power off. Disconnect P/J13 from the System Controller PWB. Switch
the printer power on. Check the voltage between pins 1 and 2 on the disconnected plug.
The voltage is 3.3VDC.
Y N
Replace the LVPS (REP 9.5).
Switch the printer power off. Remove any options connected to the System Controller
PWB. Reconnect P/J13 to the System Controller PWB. Switch the printer power on.
Check the voltage on P/J13 between pins 1 and 2 (if there are no options installed, follow
the No path). The voltage is 3.3VDC.
Y N
Replace the System Controller PWB
Switch the printer power off. Reinstall the removed options one at a time, switching on the
power and checking for 3.3VDC on P/J13 between pins 1 and 2 after each one is
installed. Replace the option just installed when the voltage fails.
On the System Controller PWB, check the voltage on P/J13 between pins 3 and 4. The
age is 5.0VDC.
Y N
Switch the printer power off. Disconnect P/J13 from the System Controller PWB. Switch
the printer power on. Check the voltage between pins 3 and 4 on the disconnected plug.
The voltage is 5.0VDC.
A
Initial Issue
DocuPrint N2125
(REP 9.2).
manuals4you.com manuals4you.com
A
Y N
On the LVPS, check the voltage between P/J PN1 pin 1 and frame ground. The
voltage is +24.0VDC.
Y N
Replace the LVPS
Replace the System Controller +5.0VDC Power Supply
Switch the printer power off. Remove any options connected to the System Controller
PWB. Reconnect P/J13 to the System Controller PWB. Switch the printer power on.
Check the voltage on P/J13 between pin 3 and frame ground (if there are no options
installed, follow the No path). The voltage is 5.0VDC.
Y N
Replace the System Controller PWB
Switch the printer power off. Reinstall the removed options one at a time, switching on the
power and checking for 5.0VDC on P/J13 between pin 3 and frame ground after each one
is installed. Replace the option just installed when the voltage fails.
On the Print Engine Controller PWB, check the voltage between P/J28 pin 1 and frame ground,
P/J28 pin 7 and frame ground, and P/J28 pin 10 and frame ground. The voltage on pin 1 is
+24VDC, pin 7 is +5.0VDC, and pin 10 is 3.3VDC. All voltages are correct.
Y N
Replace the LVPS (REP 9.5).
volt-
Replace the System Controller PWB
Engine Controller PWB (REP 9.3).
volt-
02/2000
2-27
(REP 9.5).
(REP 9.4).
(REP 9.2).
(REP 9.2). If the problem persists, replace the Print
Status Indicator Repair Analysis Procedures
RAP 24