Rap 28 Power Supply - Xerox DocuPrint N2125 Service Manual

RAP 28 Power Supply

Procedure
Switch the printer power off. Disconnect the power cord. Remove the Left Interface Cover
1.1), Left Cover (REP 1.2), and the Left Plate Assembly
from the LVPS:
• P/J281 (Print Engine Controller PWB)
• P/J282 (System Controller PWB)(REP
• P/J11(Fuser)(REP 6.2)
• P/J283 (Main Fan)(REP 9.1)
• P/J284(Front Interlock Switch)(REP 9.9)
• P/JPN1 (5VDC Power Supply)(REP
Connect the power cord. Switch the printer power on and measure the voltages listed in
1 on the LVPS.
Table 1 LVPS
Red Lead Black Lead
P/J281 pin 7 Frame Ground
P/J281 pin 10 Frame Ground
P/J281 pin 1 Frame Ground
All voltages are correct.
Y N
Replace the LVPS (REP 9.5).
Switch the printer power off. Reconnect P/J281 to the LVPS. Switch the printer power on and
measure the voltages listed in Table 1. All the voltages are correct.
Y N
Switch the printer power off. Reconnect all the P/Js to the LVPS. Disconnect the following
from the Print Engine Controller PWB:
• P/J35 (OCT PWB) (REP 10.7)
• P/J34 (Duplex PWB) (REP 12.4)
• P/J33 (Size 1 PWB) (REP 3.13)
• P/J22 (Laser) (REP 7.4)
• P/J21 (Laser) (REP 7.4)
• P/J23 (Connector PWB) (REP 9.7)
• P/J31 (Stack Full Sensor) (REP
• P/J30 (Rear Interlock Switch) (REP
• P/J25 (Print Cartridge Sensor) (REP
• P/J32 (Exit Motor) (REP 6.5)
• P/J29 (Main Motor) (REP 8.1)
• P/J26 (HVPS PWB) (REP 9.6)
• P/J27 (Fuser Sensors) (REP 6.2)
Switch the printer power on and measure the voltages listed in
correct.
A
Status Indicator Repair Analysis Procedures
RAP 28
(REP 1.11). Disconnect the following
(REP 9.3)
9.2)
9.4)
Voltage
+5.0VDC
+3.3VDC
+24.0VDC
6.6)
9.10)
7.3)
Table 1. All voltages are
A
Y N
Replace the Print Engine Controller PWB
(REP Switch the printer power off. Reconnect one of the disconnected plugs. Switch the printer
power on. Measure the voltages listed in
Y N
Replace the component just connected to the Print Engine Controller PWB.
Repeat the step with the next disconnected plug.
Switch the printer power off. Reconnect one of the disconnected plugs. Switch the printer
power on. Measure the voltages listed in
Y N
Replace the component just connected to the LVPS.
Table
Repeat the step with the next disconnected plug.
02/2000
2-30
(REP 9.3).
Table 1. All the voltages are correct.
Table 1. All the voltages are correct.
Initial Issue
DocuPrint N2125