Sensor Pcb; Power Supply; High-Voltage Power Supply Pcb - Canon LBP-1260 Service Manual

CHAPTER 6
M-
11
Possible cause Steu
EP-E cartridge 1
2

power supply

contacts)
DC controller 3
High-voltage
power supply
M - 12 Faulty Pick-up Motor
Possible cause Step
Connecters

Sensor PCB

2
DC controller
Check
Shake the cartridge following the
instructions, and load it in to the
printer. Does the message disappear?
Is the toner sensor contact oi- the
developing bias contact of the
high-voltage contacts dirty'?
Turn the printer OFF, connect the
printer driver tester, and turn the
power back ON. Does the TONER
SENSOR LED of the tester light for a
while after the power switch Is turned
ON.
Check
Are the connectors (J601.5602) from
connector 5201 on the DC controller
the sensor PCB properly aligned 7
About one second after switch is
turned ON, do the voltages between
the followi"g pairs of temlinals on the
pick-up motor driver PCB change from
. J602-Al (PA) and J60245 (GND)
l
Result Procedure
The toner IS insufnclent.
YES
Prepare a new cartridge.
YES Clean the high-voltage
Replace the DC controller
YES
Replace the high-voltage
NO
power supply PCB.
Result Procedure
Reattach the connectors
NO
Replace the sensor PCB.
YES