Actions Yes No
Step 10
Check for signals or voltages from JADF1 on the controller board.
Pin 14 and 16 should measure +24VDC. Pins 15 and 22 should
measure +3.3VDC.
Are there signals or voltages present?
Replace the ADF.
See
“ADF unit
removal” on
page 388.
Replace the
controller board. See
“Controller board
removal” on
page 299.
Understanding printer messages
Cartridge low [88.xy]
You may need to order a toner cartridge. If necessary, select Continue on the printer control panel to clear
the message and continue printing. For non‑touch‑screen printer models, press
to
confirm.
Cartridge nearly low [88.xy]
If necessary, select Continue on the printer control panel to clear the message and continue printing. For
non‑touch‑screen printer models, press
to confirm.
Cartridge very low, [x] estimated pages remain [88.xy]
You may need to replace the toner cartridge very soon. For more information, see the “Replacing supplies”
section of the User’s Guide.
If necessary, select Continue on the printer control panel to clear the message and continue printing. For
non‑touch‑screen printer models, press
to confirm.
Change [paper source] to [custom string] load [paper orientation]
Try one or more of the following:
• Load the correct size and type of paper in the tray, then verify that the paper size and type settings are
specified in the Paper menu on the printer control panel, and then select Finished changing paper.
For non‑touch‑screen printer models, press
to confirm.
• Cancel the print job.
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Diagnostics and troubleshooting
125
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