NEC NEFAX 671 Service Manual page 21

6-3. Troubleshooting for Specific Image Quality Problems ............................. T-27
(1) Image reading system: Blank or black prints ................................... T-28
(2) Image reading system: Low image density ...................................... T-29
(3) Image reading system: Foggy background or rough image ............. T-30
(4) Image reading system: Black streaks or bands ............................... T-31
(5) Image reading system: Black spots ................................................. T-31
(6) Image reading system: Blank streaks or bands ............................... T-32
(7) Printer system: Blank or black prints ................................................ T-33
(8) Printer system: Blank spots ............................................................. T-34
(9) Printer system: Smears on back ...................................................... T-34
(10) Printer system: Low image density .................................................. T-35
(11) Printer system: Foggy background .................................................. T-36
(12) Printer system: Blank streaks or bands ........................................... T-36
(13) Printer system: Black streaks or bands ............................................ T-37
(14) Printer system: Offset image ............................................................ T-37
7. FAX Error ) ....................................................................................................... T-38
7-1. Communication Error ............................................................................... T-38
(1) Outline ............................................................................................. T-38
(2) Error occurring during transmission ................................................. T-38
(3) Error occurring during reception ...................................................... T-38
7-2. Error Code ................................................................................................ T-39
(1) Reception ......................................................................................... T-39
(2) Transmission .................................................................................... T-41
8. TROUBLESHOOTING ) ................................................................................... T-45
8-1. Troubleshooting Procedure Overview ...................................................... T-45
8-2. Troubleshooting Procedure Chart ............................................................. T-45
8-3. Main Error Messages and Their Remedies .............................................. T-46
8-4. Troubleshooting Functions ....................................................................... T-47
8-5. List Communication Error Codes .............................................................. T-51
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