Action Yes No
Step 10
a Turn off the printer.
b Remove the rear cover. See
c Disconnect the cable at JOPT1 on the controller board.
d Turn the printer on.
e Measure the voltages below:
JOPT1:
• Pin 2: Ground
• Pin 3: Ground
• Pin 5: +24 V dc
• Pin 6: Ground
• Pin 7: +5 V dc
• Pin 9: Ground
• Pin 10: Ground
Are the voltages correct?
Contact your next level
of support.
Replace the controller
board. See
“Controller
board removal” on
page 291.
Tray 2 or tray 3 missing service check
Action Yes No
Step 1
a POR the printer.
b Reseat the input options.
c Reinsert the paper input tray.
d Check if the option paper pick assembly can go down and trigger
manually.
Does the error remain?
Go to step 2. Problem resolved.
Step 2
Is the machine using both 650 and 550 input option tray?
Go to step 3. Go to step 4.
Step 3
a Make sure the sequence of the input option trays is correct. The 650
option tray should be in tray 2, and the 550 option tray should be in
tray 3.
b Bring the printer into the Diagnostics Menu.
c Navigate to Feed Test > Tray # > Single Feed Test.
d Run a continuous feed test (feed at least 5 pages).
Does the feed test run successfully on each option?
Go to step 8. Go to step 4.
5027
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