Control Panel Problems; Lcd Shows Nothing; Control Panel Inoperative - Brother MFC-J6510DW Service Manual

2.4.8

Control Panel Problems

2.4.8.1

LCD shows nothing

User Check
- Check if the machine is in a sleep state.
- Load the latest firmware.
Step
1 LCD flat cable connection failure
2 Power supply harness connection
failure
3 LCD defective
4 Power supply PCB defective
5 Main PCB defective
2.4.8.2

Control panel inoperative

User Check
- Load the latest firmware.
Step
1
Rubber keypads not set in place
2
Panel-main harness connection
failure
3
Touch panel alignment off
4 Rubber keypad defective
5
Control panel PCB defective
6
Main PCB defective
Cause
Check the connection and reconnect the flat cable.
Check the connection and reconnect the harness.
Replace the LCD unit.
Replace the power supply PCB ASSY.
Replace the main PCB ASSY.
Cause
Reposition the control panel ASSY.
Check the connection and reconnect the harness.
Adjust the touch panel, using Function code 78.
(Refer to
Replace the rubber keypad.
Replace the control panel PCB ASSY.
Replace the main PCB ASSY.
2-89
Solution
Solution
Chapter 5, Section 5.1.4.29.)
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