2-36
Confidential
Error code 75
The internal temperature thermistor detected a temperature higher than the specified value.
Error code 76
The center thermistor of the fuser unit detected a temperature rise greater than the specified
value within the specified time.
Error code 78
The center thermistor of the fuser unit detected a temperature fall greater than the specified
value within the specified time.
Error code 7A
Cannot detect the synchronized signal of the main motor. The speed of the main motor does
not stabilize within the specified time.
Cooling Down
Wait for a while
<User Check>
• Leave the machine for a while as the power remains ON.
Step
Cause
Remedy
1
Internal temperature thermistor
failure
Replace the internal temperature thermistor.
2
Main PCB failure
Replace the main PCB ASSY.
Print Unable 76
Turn the power off and then back on again.
Print Unable 78
Turn the power off and then back on again.
Step
Cause
Remedy
1
Fuser unit failure
Replace the fuser unit.
2
Low voltage power supply PCB
failure
Replace the low voltage power supply PCB
ASSY.
3
Eject sensor PCB failure
Replace the eject sensor PCB ASSY.
4
Main PCB failure
Replace the main PCB ASSY.
Print Unable 7A
Turn the power off and then back on again.
Step
Cause
Remedy
1
Connection failure of the main
motor flat cable
Reconnect the main motor flat cable.
2
Main motor failure
Replace the main motor.
3
Low voltage power supply PCB
failure
Replace the low voltage power supply PCB
ASSY.
4
Main PCB failure
Replace the main PCB ASSY.
Summary of Contents for FAX-2950
Page 20: ...Confidential CHAPTER 1 SPECIFICATIONS ...
Page 35: ...Confidential CHAPTER 2 TROUBLESHOOTING ...
Page 45: ...2 8 Confidential 2 2 2 Scanning part Fig 2 4 ...
Page 122: ...Confidential CHAPTER 3 DISASSEMBLY REASSEMBLY ...
Page 130: ...3 6 Confidential 5 LUBRICATION There are no applicable parts for lubrication ...
Page 136: ...3 12 Confidential 3 New toner sensor PCB ASSY New toner sensor PCB ASSY Main PCB ASSY Guide ...
Page 204: ...Confidential CHAPTER 4 ADJUSTMENTS AND UPDATING SETTINGS AS REQUIRED AFTER PARTS REPLACEMENT ...
Page 217: ...Confidential CHAPTER 5 SERVICE FUNCTIONS ...
Page 224: ...5 5 Confidential Black and white color scanning Fig 5 1 ...
Page 263: ...Confidential CHAPTER 6 WIRING DIAGRAM ...
Page 266: ...Confidential CHAPTER 7 PERIODICAL MAINTENANCE ...
Page 267: ...Confidential CHAPTER 7 PERIODICAL MAINTENANCE CONTENTS 1 PERIODICAL REPLACEMENT PARTS 7 1 ...
Page 269: ...Confidential APPENDIX 1 SERIAL NUMBERING SYSTEM ...
Page 273: ...Confidential APPENDIX 3 INSTALLING MAINTENANCE DRIVER ...
Page 275: ...Confidential APPENDIX 4 HOW TO MAKE PROTECTIVE MATERIAL FOR DRUM UNIT ...