Ac Power Is Absent; Dc Power Is Absent - Canon iR5000 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
turned on (i.e., is the switch at the
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
switch is turned off?
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
on the DC power supply PCB?
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
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Connect the power plug.
The problem is not in the machine. Advise the user.
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.
Replace the power switch.
contact.
See "AC power is absent."
COPYRIGHT © 2000 CANON INC.
marking)?
2000 2000 2000 2000 CANON iR5000/iR6000 REV.0 JULY 2000
∞Ω ∞Ω when the ∞Ω
∞Ω