Control Panel Problems; No Display On Lcd; No Display On Led; The Control Panel Does Not Work - Brother MFC-J2320 Service Manual

4.6

Control Panel Problems

4.6.1 No display on LCD

Step
1 Panel flat cable connection
failure
2 Control panel ASSY defective
3 Power supply PCB defective
4 Main PCB defective

4.6.2 No display on LED

Step
1 AC cord defective
2 Panel flat cable 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 flat cable connection
failure
2 Control panel ASSY defective
3 Main PCB defective

4.6.4 Touch panel inoperative

Step
1 Panel flat cable connection
failure
2 Adjustment slippage of the
touch panel
3 Control panel ASSY defective
4 Main PCB defective
Cause
Check connection of the panel flat cable 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 flat cable 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 flat cable and re-
connect.
Replace the control panel ASSY.
Replace the main PCB ASSY.
Cause
Check connection of the panel flat cable and re-
connect.
Perform the touch panel adjustment. (refer to
Chapter 5, Section
Replace the control panel ASSY.
Replace the main PCB ASSY.
2-80
Solution
Solution
Solution
Solution
1.3.31.)
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