Diagnostic information 2-59
Transfer roll service check
Step Questions / actions Yes No
1 Remove the ITU. See “Image transfer unit
(ITU)” on page 4-35. Check the contacts
between the HVPS and the ITU. Clean the
contacts and recheck.
Does the error reoccur?.
Replace the ITU. See
“Image transfer unit (ITU)”
on page 4-35.
Go to step 2.
Problem resolved.
2
Does the new ITU fix the problem Problem resolved. Go to step 3.
3
Turn the printer off, and remove the rear
shield. See“Rear shield removal” on
page 4-7.
. Turn the printer on, and check the cable at
JHVPS1 connector on the controller board
without disconnecting it. Verify the following
voltage values:
Are the values approximately correct?
Replace the HVPS“High-
voltage power supply
(HVPS) assembly
removal” on page 4-31.
Replace the controller
board. See “Controller
board removal” on
page 4-18.
JHVPS1
Pin Voltage
7 +3.3 V dc
10 +3.3 V dc
11 +3.3 V dc
13 +24 V dc
14 Ground
16 Ground
Y112730-2
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