02/2000
2-12
DocuPrint N2125
RAP 2
Initial Issue
Status Indicator Repair Analysis Procedures
RAP 2 DC Power
This procedure is used to troubleshoot the Low Voltage Power Supply.
Procedure
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 (
), Left Cover
(
), and the Left Plate Assembly (
). Connect printer power. Switch the printer
power on. Measure the voltage on the LVPS between P/J285 pins 1 and 2. The voltage
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 readings
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 (
).
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 (
).
.
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 (
).
Check the voltages listed in
.
All voltages in Table 1 are correct.
Y
.
Return to
or to the procedure that sent you here.
Table 1 Low Voltage Readings
Red Lead
Black Lead
Voltage
P/J281 pin 7
Frame Ground
+5.0VDC
P/J281 pin 10
Frame Ground
+3.3VDC
P/J281 pin 1
Frame Ground
+24.0VDC
A
A
Содержание N2125N - DocuPrint B/W Laser Printer
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