Brother HL-4000CN - Chapter V Troubleshooting

CONTENTS
CHAPTER V TROUBLESHOOTING .............................................. V-1
1. PREFACE....................................................................................................V-1
1.1 Troubleshooting Procedure...............................................................................................V-1
1.2 Note on Troubleshooting...................................................................................................V-1
2. LEVEL 1 TROUBLESHOOTING..................................................................V-3
2.1 Level 1 FIP ........................................................................................................................V-3
3. LEVEL 2 TROUBLESHOOTING..................................................................V-4
3.1 Fail Code List ....................................................................................................................V-4
3.2 Fail FIP............................................................................................................................V-14
4. HOW TO USE DIAG. (C/E) MODE............................................................V-39
4.1 Roles of the Control Panel in Diag. (C/E) Mode..............................................................V-39
4.2 Entering Diag. (C/E) Mode ..............................................................................................V-39
4.3 Exiting Diag. (C/E) Mode.................................................................................................V-39
4.4 Diag. (C/E) Mode Functions............................................................................................V-39
4.5 Operation Procedure.......................................................................................................V-40
4.6 Diag. Mode Menu Tree....................................................................................................V-41
4.7 ESS Diagnosis ................................................................................................................V-43
4.8 IOT Diagnosis..................................................................................................................V-44
4.8.1 Digital input test ........................................................................................................V-45
4.8.2 Digital output test......................................................................................................V-46
4.8.3 NVM read/write.........................................................................................................V-49
4.8.4 NVM information print...............................................................................................V-50
4.8.5 NVM information save ..............................................................................................V-50
4.8.6 NVM information load ...............................................................................................V-50
4.9 Installation Setting...........................................................................................................V-51
4.10 Test Print.......................................................................................................................V-52
4.11 Parameter Setting .........................................................................................................V-53
4.11.1 Parameter setting/display .......................................................................................V-53
4.11.2 Parameter list print..................................................................................................V-54
4.12 Information Print............................................................................................................V-55
5. DIAGNOSIS FOR STANDALONE PRINTER ............................................V-56
5.1 General............................................................................................................................V-56
5.2 Printing Method ...............................................................................................................V-56
5.3 Test Print Pattern ............................................................................................................V-57
6. NVM LIST ..................................................................................................V-58
7. HEX/DEC CONVERSION TABLE..............................................................V-67
8. IMAGE QUALITY TROUBLE ENTRY CHART...........................................V-69
9. IMAGE QUALITY SPECIFICATIONS ........................................................V-70
9.1 Parallelism.......................................................................................................................V-70
9.2 Diagonal ..........................................................................................................................V-70