2-52 Service Manual
5022-xxx
Exit sensor service check
Input sensor service check
6
Turn the printer off. Connect the JLVPS1 cable
to the system card. Remove one option/feature
at a time, and turn the printer on to isolate the
failing part.
Warning: Observe all the ESD precautions
(see “Handling ESD-sensitive parts” on
page 4-1) and turn the printer off before any
feature or option cards are removed or
replaced.
Is a failing part found?
Replace the faulty part. Contact your next level of
support.
Step Questions / actions Yes No
1 Verify the paper is loaded properly in the
manual feed slot. See “Loading media in the
multipurpose feeder or manual feeder” on
page 3-28.
Is the paper properly loaded in the manual
feed slot?
Go to step 2. Load paper in the manual
feed slot. See “Clearing
paper jams in the manual
feeder” on page 3-29.
2
Is the exit sensor flag damaged? Replace the fuser. See
“Fuser removal” on
page 4-60.
Go to step 3.
3
Is the JFUSER1 properly connected to the
system card?
Go to step 4. Reseat the connector.
4
Place a voltmeter between the JFUSER1 pin 7
and ground. Initially, the meter should indicate
5 V dc. Activate the exit sensor flag.
Does the voltage drop to 0 V dc?
Replace the system card.
See “System card
removal” on page 4-79.
Replace the exit sensor.
Step Questions / actions Yes No
1 Is the input sensor flag damaged? Replace the paper pick
mechanism. See “Paper
pick mechanism assembly
removal” on page 4-68.
Go to step 2.
2
Is the JTRAY cable connector properly
connected to the system card?
Go to step 3. Reseat the connector.
3
Place a voltmeter between JTRAY1 pin 2 and
ground. Initially, the meter should indicate
+5 V dc. Activate the input sensor flag.
Does the voltage drop to 0 V dc?
Replace the system card.
See “System card
removal” on page 4-79.
Replace the paper pick
mechanism. See “Paper
pick mechanism assembly
removal” on page 4-68.
Step Questions / actions Yes No
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