Electrical Components; Dc Controller Pcb; High Voltage Power Supply - Canon LBP-CX Series Service Manual

VII. ELECTRICAL COMPONENTS
Note:
See Figs. 4-2 to 4-6 for removing the covers and
panels.
A. High-Voltage Power Supply
Removal
(1)
Take out the BP cartridge. Remove the rear
panel, the top cover and the left panel.
(2) Remove the left frame and the cover of the high-
voltage power supply assembly. Unplug the
connector. Take out the assembly (1). (See Fig.
4-22.)
Figure 4-96
B. AC Driver PCB (fixing Roller Heater Safety PCB
and AC Controller PCB)
Removal
(1)
Open the printer and remove the power switch
cover. (See Fig. 4-10).
(2) Unplug connector Jl06 and Jl04. Remove the
two fastening screws and take out the fixing
roller heater safety PCB.
(3) Unplug all the connectors on the AC controller
PCB. Remove the two fastening screws and
take out the AC controller PCB.
Figure4-97
Fixing roller heater
safety PCB
nnectors'
C. DC Controller PCB
Removal
(1)
Open the printer and take out the BP cartridge.
Oose the printer. Remove the rear panel, top
cover, and duct plate.
(2) Unplug all the connectors on the DC controller
PCB. Connec_t the laser shorting connector to
J204. Remove the. five nylon fasteners and the
DC controller PCB.
Figure 4-98
D. DC Power Supply and Main Motor Driver PCB
Removal
(1)
Take out ·the BP cartridge. Close the printer.
Remove the rear panel, top cover and left panel.
(2) Unplug the three connect.ors and two protective
covers for the DC power supply and the main
motor driver PCB. Also unplug the three con-
nectors on the varistor PCB.
(3)
T~e
out the DC power supply and main motor
driver PCB (5), together with the heat sink.
Figure 4-99
4-26
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BY CANON INC. CANON LBP·CX SERIES REV.2 JULY 1985 PRINTED IN JAPAN (IMPRIME AU JAPONJ