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2-100
Confidential
3.12 Troubleshooting of FAX/Telephone Functions
3.12.1 FAX can't send it
3.12.2 FAX cannot be transmitted and received.
3.12.3 No bell ring
User Check
• Verify that the telephone cord is securely inserted into the right socket.
• Check the dial mode setting again.
Step
Cause
Remedy
1
Connection between main PCB and
NCU PCB
Connect the connector between the main
PCB ASSY and NCU PCB ASSY
correctly.
2
Connection between main PCB and
panel PCB
Connect the connector between the main
PCB ASSY and panel PCB ASSY
correctly.
3
Rubber key connection failure
Replace the rubber key.
4
NCU PCB failure
Replace the NCU PCB ASSY.
5
Panel PCB failure
Replace the panel PCB ASSY.
6
Main PCB failure
Replace the main PCB ASSY.
User Check
• Verify that the telephone cord is securely inserted into the right socket.
Step
Cause
Remedy
1
Connection between main PCB and
NCU PCB
Connect the connector between the main
PCB ASSY and NCU PCB ASSY
correctly.
2
NCU PCB failure
Replace the NCU PCB ASSY.
3
Main PCB failure
Replace the main PCB ASSY.
User Check
• Set a value other than “0” to the number of bell rings.
• Set a value other than “OFF” to the bell volume.
Step
Cause
Remedy
1
Harness connection failure of
speaker
Check the harness connection of the
speaker and reconnect it.
2
Connection between main PCB and
NCU PCB
Connect the connector between the main
PCB ASSY and NCU PCB ASSY
correctly.
3
Speaker failure
Replace the speaker unit.
4
NCU PCB failure
Replace the NCU PCB ASSY.
5
Main PCB failure
Replace the main PCB ASSY.
Summary of Contents for DCP 7065DN
Page 21: ...CHAPTER 1 SPECIFICATIONS ...
Page 35: ...CHAPTER 2 ERROR INDICATION AND TROUBLESHOOTING ...
Page 44: ...2 7 Confidential ADF part Fig 2 5 Left Side Right Side Document feed path Face up ...
Page 142: ...CHAPTER 3 DISASSEMBLY REASSEMBLY ...
Page 157: ...3 13 Confidential 4 New toner sensor PCB ASSY New toner sensor PCB ASSY Main PCB ASSY Guide ...
Page 169: ...3 25 Confidential 21 Hook switch PCB Guide Main PCB ASSY Hook switch PCB Side cover L ...
Page 252: ...Confidential CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 264: ...CHAPTER 5 SERVICE FUNCTIONS ...
Page 271: ...5 5 Confidential Black and white scanning Fig 5 1 ...
Page 311: ...Confidential CHAPTER 6 CIRCUIT DIAGRAMS WIRING DIAGRAM ...
Page 313: ...6 1 Confidential 1 CIRCUIT DIAGRAMS High Voltage Power Supply PCB Circuit Diagram MURATA ...
Page 314: ...6 2 Confidential High Voltage Power Supply PCB Circuit Diagram Panasonic ...
Page 315: ...6 3 Confidential Low Voltage Power Supply PCB Circuit Diagram 115V EDPS 62AF A Delta ...
Page 316: ...6 4 Confidential Low Voltage Power Supply PCB Circuit Diagram 115V MPW3058 MURATA ...
Page 317: ...6 5 Confidential Low Voltage Power Supply PCB Circuit Diagram 230V EDPS 62BF A Delta ...
Page 318: ...6 6 Confidential Low Voltage Power Supply PCB Circuit Diagram 230V MPW3059 MURATA ...
Page 319: ...6 7 Confidential NCU PCB Circuit Diagram U S A Canada ...
Page 320: ...6 8 Confidential NCU PCB Circuit Diagram Europe Oceania ...
Page 321: ...6 9 Confidential NCU PCB Circuit Diagram China Asia Gulf ...
Page 322: ...6 10 Confidential 2 WIRING DIAGRAM Wiring diagram ...
Page 323: ...Confidential CHAPTER 7 PERIODICAL MAINTENANCE ...
Page 324: ...Confidential CHAPTER 7 PERIODICAL MAINTENANCE CONTENTS 1 PERIODICAL REPLACEMENT PARTS 7 1 ...
Page 326: ...APPENDIX 1 SERIAL NUMBERING SYSTEM Confidential ...
Page 330: ...APPENDIX 3 INSTALLING THE MAINTENANCE DRIVER Confidential ...
Page 334: ...App 3 4 Confidential 10 Alert warning message appears click Continue Anyway to proceed ...
Page 336: ...APPENDIX 4 HOW TO MAKE PROTECTIVE MATERIAL OF DRUM UNIT Confidential ...