Canon BJC6500 Service Manual - Page 83
TROUBLESHOOTING BY SYMPTOMS, Power Does, Not Turn On.
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BJC-6500 Part 4: TROUBLESHOOTING 2. TROUBLESHOOTING BY SYMPTOMS 2.1 Troubleshooting by Symptoms 1. Power Does Pressing the POWER button fails to switch on the printer. Not Turn On. Pressing the POWER button does not start initialization. Defective AC adapter, control board, or DC power supply cable Check the AC adapter for +5 Vdc output voltage +5VDC OK? No Yes Replace the control board Replace the DC power supply cable GND Replace the AC adapter TROUBLE SHOOTING 4-19
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2. TROUBLESHOOTING BY SYMPTOMS
2.1 Troubleshooting by Symptoms
<Symptoms>
Pressing the
POWER
button fails to switch on
the printer.
Pressing the
POWER
button does not start
initialization.
<Cause>
Defective AC adapter, control board, or DC power
supply cable
<Measure>
4-19
BJC-6500
Part 4: TROUBLESHOOTING
TROUBLE
SHOOTING
1.
Power Does
Not Turn On.
Check the AC adapter for
+5 Vdc output voltage
Replace the AC
adapter
Replace the control
board
+5VDC
GND
OK?
Yes
No
Replace the DC
power supply cable