Diagnostic information 2-125
5026
4
Place a voltmeter between FUSER1 pin 3 and
ground (pin 6).
Does the meter read +5 V dc?
Go to step 6. Go to step 5.
5
1. Replace the fuser.
2. Bring the printer up in Diagnostics Menu
(turn off the printer, press and hold and
. and turn on the printer).
3. Select SENSOR TESTS, and press
Select ().
4. Select Dynamic Sensors, and press
Select ().
5. Select Bubble, and press Select ().
6. Open the front door.
7. Activate the bubble sensor.
Did the bubble sensor change from Open to
Closed?
Problem resolved. Replace the system board.
See “System board
removal” on page 4-153.
Step Questions / actions Yes No
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