3-64 Phaser 7400 Color Printer Service Manual
Install, Reseat or Lock [C][M][Y][K] Toner Cartridge
The printer does not detect the Toner Cartridge’, or toner is not being supplied.
Initial Actions:
■ Ensure that the Toner Cartridges are fully seated and locked into position.
■ Cycle printer power.
■ If the problem persists, follow the procedure below.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ [C][M][Y][K] Toner Cartridge, PL1.1.29
■ CRUM Reader Board, PL2.1.92
■ Print Engine Map 1 (page 10-4)
■ Print Engine Map 3 (page 10-6)
■ Print Engine Fuser (page 10-40)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Check for packaging material .
Is there packing materials present?
Remove the
material.
Go to Step 2.
2
Remove the cartridge and tap it on a hard
surface to break up any compacted toner.
Reinstall the cartridge.
Does the error persist?
Go to Step 3. Complete.
3
Check the CRUM Harness continuity.
1. Remove the Top Cover (page 8-24).
2. Disconnect the CRUM cable from RFID
on the Engine Control Board and CN1
on the CRUM Reader Board.
Is the cable conductive?
Replace the CRUM
Reader Board
(
page 8-146). If the
error persists, go to
Step 4.
Replace the
CRUM Harness. If
the error persists,
go to Step 4.
4
Check the Antenna Harness continuity.
Disconnect CN2, CN3, CN4, and CN5
from the CRUM Reader Board and
Antennas.
Is each harness conductive?
Replace the CRUM
Antennas
(
page 8-147). If the
error persists, go to
Step 5.
Replace damaged
wiring.
5
Check for +5V at RFID-2 on the Engine
Control Board.
Is there +5 V at RFID-2 <=> ground?
Go to Step 6. Replace the
Engine Control
Board
(
page 8-112).
6
Check for +5V at POWER-2 on the Engine
Control Board.
Is there +5 V at POWER-2 <=> ground?
Replace the Engine
Control Board
(
page 8-112).
Replace the LVPS
(
page 8-121).
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