Dc Controller Pcb - Canon LBP-860 Service Manual

I - 4 All black
Possible cause
EP-E cartridge
1
High-voltage 2
power supply
PCB (Primary
voltage)
DC controller
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Check
Does the print quality improve when
the cartrld@ is replaced?
Perform a test print. About one second
after the main motor starts. does the
voltage between 5210.9 (SLOZ) and
PCB become about 0.76 VDC?
Procedure
Replace the cartridge.
Replace the high-voltage
power supply PCB. If the
problem persists after
replacing the PCB, check b,
using the laser malfunction
diagnosis flowchart In
section 111 c.
N O
Replace the DC controller
PCB. If the problem penistz
after replaclng the PCB,
check by using the laser
malfunction diagnosis
flowchart in Section III C.
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