Engine Logic Board - Fuji Xerox Phaser 5500 Service Manual

Engine Logic Board

Engine Logic Board Troubleshooting Reference
Applicable Parts
Engine Logic Board
LVPS
Engine Logic Board Troubleshooting Procedure
Step Actions and Questions
1 Check AC supply voltage to the LVPS.
1. Remove the Upper Right Cover.
2. Turn the printer power On.
3. Measure AC voltage at the following test
points on the LVPS:
P/J1-1 <=> P/J1-4
Is the voltage across pins 1 and 4 equal
to 120V or 220V (line voltage).
2
Check DC supply voltage to the Engine
Logic Board:
1. Remove the I/P Board Cover, Upper,
and Lower Rear Covers.
2. Turn the printer power On.
3. Measure the voltage at these points:
P/J400-3 <=> ground +5.0 V
P/J400-1 <=> ground +24.0 V
Are the voltage levels correct?
3 Check the Engine Logic Board harness
continuity:
1. Disconnect P/J526 from the LVPS and
P/J400 from the Engine Logic Board.
2. Check for continuity at the following:
P/J526-2 <=> P/J400-3
P/J526-1 <=> P/J400-4
P/J526-4 <=> P/J400-1
P/J526-3 <=> P/J400-2
Are these conductive?
4-12
Wiring and Plug/Jack Map References
Engine Logic Board Plug/Jack locator (page 10-13)
Print Engine LVPS Plug/Jack locator (page 10-16)
Print Engine LVPS Wiring Diagram (page 10-21)
PL8.1 Print Engine Electrical (page 9-40)
Yes
Go to Step 2.
Replace the
Engine Logic
Board
(page 8-89).
Replace the
LVPS
(page 8-92).
Phaser 5500 Printer Service Manual
No
Verify the power cord is
in good condition and
plugged into the Printer
and AC outlet. Verify
that the GFI breaker is
not tripped. Verify
correct operation of the
printer power switch
and AC harness. Verify
correct power from the
AC outlet.
Go to Step 3.
Repair the wiring. If the
problem persists,
replace the LVPS, and
if necessary, the
Engine Logic Board
(page 8-89).