A3 Size Color Flat Bed Scanner GT-30000 Revision A
TROUBLESHOOTING Overview 34
Flowchart 3-3. CR moves abnormally (crashes into frame)
Flowchart 3-4. Lamp does not light
Replace the main circuit board
or connection circuit board.
Start
Transportation
screw set to locked
position?
Turn on the power and move the
carriage outside the HP.
Is +24 DC present
between pins 10 and 9
(GND) of connection
circuit board connector
CN5?
Is connection circuit
board connector
CN6 connected
properly?
Unlock the screw
Yes
No
Yes
No
Yes
Replace the HP sensor
No
Connect
properly.
Replace the main circuit board
or connection circuit board.
Start
Does the lamp
operate normally?
Replace the lamp on the carriage.
No
Replace the inverter board on the carriage.
Old inverter was defective.
Yes
No
Old lamp was defective.
Yes
Does the lamp
operate normally?