Confidential
CHAPTER 5
SERVICE FUNCTIONS
Describes the maintenance mode which is exclusively designed for the purpose of checking the settings
and adjustments using the buttons on the control panel.
This chapter also covers not-disclosed-to-users function menus, which activate settings and functions or
reset the parts life.
CONTENTS
1. MAINTENANCE MODE..............................................................................5-1
1.1 How to Enter the Maintenance Mode ......................................................................... 5-1
1.2 How to Enter the End User-accessible Maintenance Mode ....................................... 5-1
1.3 List of Maintenance-mode Functions.......................................................................... 5-2
1.4 Detailed Description of Maintenance-mode Functions ............................................... 5-3
1.4.1 EEPROM parameter initialization (Function code 01, 91) ................................. 5-3
1.4.2 Monochrome image quality test pattern (Function code 09).............................. 5-4
1.4.3 Worker switch (WSW) setting and printout (Function code 10, 11) ................... 5-5
1.4.4 Operational check of LCD (Function code 12) .................................................. 5-8
1.4.5 Operational check of control panel button (Function code 13) .......................... 5-9
1.4.6 Software version check (Function code 25)..................................................... 5-10
1.4.7 “One Push Demo” setting (Function code 28) ................................................. 5-11
1.4.8 Operational check of sensors (Function code 32) ........................................... 5-12
1.4.9 LAN connection status display (Function code 33).......................................... 5-15
1.4.10 Printout of EEPROM log (Function code 40)................................................. 5-16
1.4.11 Not-disclosed-to-users functions (Function code 45)..................................... 5-17
1.4.12 Adjustment of inter-color position alignment (Function code 66)................... 5-21
1.4.13 Continuous print test (Function code 67)....................................................... 5-25
1.4.14 Laser unit test pattern print (Function code 68)............................................. 5-28
1.4.15 Frame pattern print (One-sided) (Function code 69) ..................................... 5-29
1.4.16 Frame pattern print (Two-sided) (Function code 70) ..................................... 5-31
1.4.17 Color test pattern (Function code 71) ............................................................ 5-33
1.4.18 Sensitivity adjustment of density sensor (Function code 72)......................... 5-35
1.4.19 Setting by country (Function code 74)........................................................... 5-36
1.4.20 Sensitivity adjustment of registration mark sensor and check of
1.4.21 Printout of maintenance information (Function code 77)............................... 5-40
1.4.22 Operational check of fans (Function code 78)............................................... 5-42
1.4.23 Display of machine history (log) (Function code 80) ..................................... 5-43
Summary of Contents for HL-4140CN
Page 19: ...Confidential CHAPTER 1 SPECIFICATIONS ...
Page 29: ...Confidential CHAPTER 2 ERROR INDICATION AND TROUBLESHOOTING ...
Page 145: ...Confidential CHAPTER 3 DISASSEMBLY AND ASSEMBLY ...
Page 169: ...3 21 Confidential 8 DISASSEMBLY FLOW Disassembly Re Assembly second ...
Page 296: ...Confidential CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 311: ...Confidential CHAPTER 5 SERVICE FUNCTIONS ...
Page 336: ...5 23 Confidential Inter color position alignment adjustment chart Fig 5 8 ...
Page 343: ...5 30 Confidential Fig 5 11 ...
Page 345: ...5 32 Confidential Fig 5 12 First side Second side ...
Page 347: ...5 34 Confidential Color test pattern Fig 5 13 MCYK Y C K M YCMK_ _A ...
Page 354: ...5 41 Confidential Maintenance information Fig 5 14 ...
Page 382: ...Confidential CHAPTER 6 CIRCUIT DIAGRAMS WIRING DIAGRAM ...
Page 384: ...6 1 Confidential 1 CIRCUIT DIAGRAMS High voltage Power Supply PCB Circuit Diagram 1 3 ...
Page 385: ...6 2 Confidential High voltage Power Supply PCB Circuit Diagram 2 3 ...
Page 386: ...6 3 Confidential High voltage Power Supply PCB Circuit Diagram 3 3 ...
Page 387: ...6 4 Confidential Low voltage Power Supply PCB Circuit Diagram 100V ...
Page 388: ...6 5 Confidential Low voltage Power Supply PCB Circuit Diagram 200V ...
Page 389: ...6 6 Confidential 2 WIRING DIAGRAM Wiring Diagram ...
Page 390: ...Confidential CHAPTER 7 PERIODICAL MAINTENANCE ...
Page 424: ...Confidential APPENDIX 1 SERIAL NUMBERING SYSTEM ...
Page 428: ...Confidential APPENDIX 3 INSTALLING THE MAINTENANCE DRIVER ...
Page 432: ...App 3 4 Confidential 10 Alert warning message appears click Continue Anyway to proceed ...