User Guide

400 Chapter 7 - Troubleshooting EN
(INSTALL <color>, continued)
6 Make sure that the black toner cartridge is
installed.
• Install the black toner cartridge if it is not
installed.
• If the black toner cartridge is already
installed, turn the printer off, reinstall the
black toner cartridge, and turn the printer
on again.
7 Reconnect connectors J641 and J644 on the
main relay PCA, and connector J102 on the
power supply.
8 Reconnect connector J227 on the controller
board, and connector J647 on the main relay
PCA.
9 Check electrical continuity between connector
J644-1 (PBK) and J644-2 (PMP) when the
door switch (SW644) is turned on. If there is no
electrical continuity, replace the black toner
cartridge on/off switch.
10 Check the upper (blue) lever (black toner
cartridge lever) on the printer. Move the lever
to the left. Replace the lever if it is cracked.
11 Replace the black toner cartridge if it is
deformed or damaged.
12 Replace the remaining color toner sensor.
13 Replace the controller board.
INSTALL FUSER
LOWER LEFT DOOR
Event log message: None
Description:
The printer has detected that the fuser is not
installed.
Action:
1 Install the fuser and verify that it is working
correctly.
2 Reconnect connector J26 on the fuser.
3 Reconnect connector J222 on the controller
board.
4 Replace the controller board.
Table 42. Unnumbered printer messages (continued)