Ac Power Is Absent; Dc Power Is Absent - Canon iR5000i Service Manual

CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS

4.2.1 AC power is absent

Power plug
1) Is the power plug connected to the power outlet?
NO:
Power source
2) Is there rated AC voltage present at the power outlet?
NO:
Leakage breaker
3) Has the leakage breaker located in the left bottom of the machine
NO:
Power cord, Line noise filter (LF1)
4) Try replacing the power cord/line filter. Is the problem corrected?
NO:
Main power switch (SW1), Wiring
5) Is the resistance 0Ω Ω Ω Ω Ω when the switch is turned on and ∞Ω
NO:
YES: Check the wring of the AC power line and the connectors for poor

4.2.2 DC power is absent

AC power supply
1) Is there rated AC voltage between connectors J4001-1 and J4001-2
NO:
Fuse (F4001)
2) Is the fuse on the DC power supply PCB blown?
YES: Remove the cause of the fuse, and replace the fuse.
4-38 T
Connect the power plug.
The problem is not in the machine. Advise the user.
turned on (i.e., is the switch at the
Remove the cause that turned on the leakage breaker, and shift the
switch of the leakage breaker to the | marking.
Check the wiring of the AC power supply line and the connectors
for poor contact.
switch is turned off?
Replace the power switch.
contact.
on the DC power supply PCB?
See "AC power is absent."
COPYRIGHT © 2001 CANON INC.
marking)?
2000 2000 2000 2000 CANON iR5000i/iR6000i REV.0 JUNE 2001
∞Ω ∞Ω when the ∞Ω
∞Ω