Other Problems; The Machine Cannot Be Powered On; Internal Memory Errors; Security Function Lock Related Problems - Brother MFC Series Service Manual

4.10 Other Problems

4.10.1 The machine cannot be powered on

<User Check>
- Insert the power cord securely.
Step
1 Panel harness connection
failure
2 Control panel ASSY defective
3 Power cord defective
4 Power supply PCB defective
5 Main PCB defective

4.10.2 Internal memory errors

<User Check>
- Delete saved print and fax data.
- Disconnect and reconnect the Power cord.
Step
1 Main PCB defective

4.10.3 Security function lock related problems

<User Check>
- Have the administrator release the security lock.
Step
1 Main PCB defective
Cause
Reconnect the Panel harness.
Replace the Control panel ASSY.
Replace the Power supply PCB ASSY.
(US/CAN)
Replace the Power cord. (Outside US/CAN)
Replace the Power supply PCB ASSY.
Replace the Main PCB ASSY.
Cause
Replace the Main PCB ASSY.
Cause
Replace the Main PCB ASSY.
2-75
Solution
Solution
Solution
Confidential