Rap 2 Dc Power - Xerox DocuPrint N2125 Service Manual

RAP 2 DC Power

This procedure is used to troubleshoot the Low Voltage Power Supply.
Procedure
Perform RAP 1 before starting this RAP. If RAP 1 results are correct, switch the printer power
off and disconnect the printer power. Remove the Left Interface Cover
(REP 1.2), and the Left Plate Assembly (REP
power on. Measure the voltage on the LVPS between P/J285 pins 1 and 2. The
matches the line voltage.
Y N
Repair/replace the AC Wire Assembly
Measure the voltage between both sides of the Fuse F1 and frame ground. Both
match the line voltage.
Y N
Switch the printer power off. Replace fuse F1 (125V - 10A / 250V - 3A). Switch the printer
power on. Measure the voltage between both sides of the Fuse F1 and frame ground.
Both readings match the line voltage.
Y N
Replace the LVPS (REP 9.5).
Problem Solved.
Measure the voltage between LVPS P/J281 pin 1 and frame ground. The voltage is +24VDC.
Y N
On the LVPS, measure the voltage between P/J284 pin 2 and frame ground. The voltage
is +24VDC
Y N
Switch the printer power off. Disconnect printer power. Disconnect P/J 281. Connect
printer power. Switch the printer power on. Measure the voltage between LVPS P/J
281 pin 1 and frame ground. The voltage is +24VDC.
Y N
Replace the LVPS (REP 9.5).
Go to RAP 3.
Measure the voltage between P/J 284 pin 1 and frame ground. The voltage is +24VDC.
Y N
Check the Front Cover. The Front Cover is closed and actuating the interlock
switch.
Y N
Repair or replace the defective cover/interlock switch as necessary.
Check the continuity through the interlock switch. Replace if necessary.
Replace the LVPS (REP 9.5).
A
Status Indicator Repair Analysis Procedures
RAP 2
(REP 1.1), Left Cover
1.11). Connect printer power. Switch the printer
(PL 10.1).
readings
A
Check the voltages listed in Table
Red Lead
P/J281 pin 7
P/J281 pin 10
P/J281 pin 1
voltage
All voltages in Table 1 are correct.
Y N
Go to RAP 3.
Return to Initial Actions or to the procedure that sent you here.
02/2000
2-12
1.
Table 1 Low Voltage Readings
Black Lead Voltage
Frame Ground +5.0VDC
Frame Ground +3.3VDC
Frame Ground +24.0VDC
Initial Issue
DocuPrint N2125