2-48 Service Manual
7526
120.xx—Fuser error service check
2
1. Turn the printer off, and then remove the
rear frame cover. See “Rear frame cover
removal” on page 4-37.
2. Check the cable in connector JPH1 for
proper connection to the system board,
the cable for pinch points, and the cable or
connector for any other damage.
Is the cable damaged?
Replace the 5 V interlock
switch. See “5 V interlock
switch cable removal” on
page 4-48.
Go to step 3.
3
Measure the continuity across all of the fuses
on the system board.
Are any of the fuses blown?
Replace the system board.
See “System board
removal” on page 4-157.
Go to step 4.
4
1. Perform the printhead verification to check
whether the new printhead solves the
problem. See “Printhead verification”
on page 3-52.
2. Perform the Servo Laser Test. See
“Servo Laser Test” on page 3-19.
Did the printhead motor pass the test?
Replace the printhead. See
“Printhead removal,
installation, and
adjustment” on
page 4-140.
Replace the system board.
See “System board
removal” on page 4-157.
Step Questions / actions Yes No
1 Check the input voltage switch on the back of
the low-voltage power supply (LVPS).
Note: Some LVPS FRUs do not have a
switch, and are switch automatically. If your
FRU does not have this switch, go to step 2.
Is the voltage level (115 V/230 V) properly
set?
Go to step 2. Set the switch for the
proper country voltage.
Step Questions / actions Yes No
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