B. Engine Controller Pcb - Canon LBP-1000 Service Manual

CHAPTER 3

B. Engine Controller PCB

1) Remove the cassette.
2) Remove the rear cover.
3) Disconnect the 2 connectors and
remove the 2 screws from the back of
the printer.
Connectors Screws
Figure 3-8-2
4) Place the printer with its back side at
the bottom. Be sure that the 2 cables
are not pinched by the frame.
Note: The printer can be placed upside
down to conduct this operation. In
this case, if the inside of the print-
er is dirty, toner or paper dust may
enter the laser/scanner unit and
cause image defects.
when placing the printer upside
down, be sure to cover the laser
emission hole of the laser/scanner
unit with tape.
Also, it is advisable to cover the
hole with tape when placing the
printer on its side or back.
3 - 24
5) Remove the 4 screws, lift the power
Screws
6) Disconnect the 6 connectors, and then
7) Remove the 6 screws and spacer, dis-
Therefore,
Screws
Connector
Engine controller PCB
< Note for reassembly >
When installing the engine controller PCB,
be sure to connect the connectors (espe-
switch side, and then rotate the engine
controller PCB.
Figure 3-8-3
remove the engine controller unit.
connect the connector.
engine controller PCB from the engine
controller unit.
Figure 3-8-4
Remove the