4.6
Control Panel Problems
4.6.1 No display on LCD
Step
1
AC cord defective
2
Panel harness connection failure
3
Control panel ASSY defective
4
Power supply PCB defective
5
Main PCB defective
4.6.2 No display on LED
Step
1
AC cord defective
2
Panel harness connection failure
3
Control panel ASSY defective
4
Power supply PCB defective
5
Main PCB defective
4.6.3 The control panel does not work
Step
1
Panel connection failure
2
Control panel ASSY defective
3
Main PCB defective
4.6.4 Touch panel inoperative
Step
1
Panel connection failure
2
Adjustment slippage of the touch
panel
3
Control panel ASSY defective
4
Main PCB defective
Cause
Replace the AC cord.
Check connection of the panel harness and re-
connect.
Replace the control panel ASSY.
Replace the power supply PCB ASSY.
Replace the main PCB ASSY.
Cause
Replace the AC cord.
Check connection of the panel harness and re-
connect.
Replace the control panel ASSY.
Replace the power supply PCB ASSY.
Replace the main PCB ASSY.
Cause
Check connection of the panel harness and re-
connect.
Replace the control panel ASSY.
Replace the main PCB ASSY.
Cause
Check connection of the panel harness and re-
connect.
Perform the touch panel adjustment. (refer to
Chapter 5, Section
Replace the control panel ASSY.
Replace the main PCB ASSY.
2-78
Solution
Solution
Solution
Solution
1.3.31.)
Confidential