Only The Main Power Supply Lamp On The Operation Panel Lighting Up And No Display On The Lcd Due To The Failure In The Low Voltage Power Supply Assembly; Machines Having System Software Earlier Than Ver.30.06, When Turning The Power On, The Machine Does Not Start But Only The Tally Lamp Is Lit - Canon imageRUNNER ADVANCE C2000 Series Technical Workbook

Service work
When the symptom occurs, turn off the main power switch once, and insert the interface cable on the back of
the control panel again.
Title
Only the main power supply lamp on the operation panel lighting up and no display on the LCD due to the
failure in the low voltage power supply assembly
Symptom
When the main power supply was ON, only the main power supply lamp [a] on the operation panel lighted up
and no display appeared on the LCD. Further, no initial operation was performed.
Cause
24V was not output from the Low-voltage Power Supply Unit.
Service work
Check the 24V output from the J300-1 of the Low-voltage Power Supply Unit. If no 24V is output , replace
the Low-voltage Power Supply Unit.
[Reference] The Low-voltage Power Supply Unit. is described as the Low Voltage Power Supply Ass'y in the
parts catalogue.
FM3-8179 LOW VOLTAGE POWER SUPPLY ASS'Y
Title
Machines having system software earlier than Ver.30.06, when turning the Power ON, the machine does not
start but only the tally lamp is lit.
Symptom
Depending on the combinations of machines having system software earlier than Ver.30.06 and the Data
Erase Kit-C1, when turning the Power ON, the machine did not start but only the tally lamp on the control
panel was lit.
pg. 119