CHAPTER 6 TROUBLESHOOTING
6-66
9. INSPECTION MODE
9.1
Entering Inspection Mode
Select the inspection mode you want to use following the steps below;
(1) Turn off the power switch of the printer
(2) Turn on the power switch while holding down the
Go
switch and the
Set
switch.
(3) Release the both switches when the message GO TEST MODE appears on the LCD
display.
(4) Holding down the
Go
switch will cause the 16 black square symbol appear in order on the
LCD display from the left to the right as the figure shown below, and when you release the
switch, a mode is selected:
Left
Right
Fig. 6-36
Inspection Mode List
Where you release
the Go switch
Type of inspection
1st
Square
Prints a test sample page. Prints a test print page when the NV-
RAM setting is OFF. (When NV_DEMO value is 0.)
2nd
Square
Prints the Print Configuration page and a font list.
3rd
Square
Returns to the factory default settings.
4th
Square
NVRAM hex dump mode (Not used when the NV-RAM setting is
OFF; when NV_DISPMAINT value is 0.)
5th
Square
Writes the main program.
6th
Square
Not used
7th
Square
Writes the engine patch program.
8th
Square
Not used
9th
Square
Writes the message patch program.
10th
Square
Prints a continuous grid pattern test page.
11th
Square
Prints fusing test print pages in three different modes;
grid
Æ
horizontal stripes
Æ
100% density
12th
Square
4% density pattern print mode
13th
Square
Not used
14th
Square
Factory check mode
Do not use this mode.
15th
Square
Not used
16th
Square
Sensor check mode (See
9.2 Sensor Check Mode
)
Содержание HL-1870N
Страница 15: ...HL 1850 1870N SERVICE MANUAL xiii ...
Страница 77: ...CHAPTER 2 INSTALLATION AND BASIC OPERATION 2 48 ...
Страница 82: ...HL 1850 1870N SERVICE MANUAL 3 5 Fig 3 5 ...
Страница 83: ...CHAPTER 3 THEORY OF OPERATION 3 6 1 3 2 ROM Two 64 Mbits ROMs x 16 bit are fitted Fig 3 6 HL 1850 HL 1870N ...
Страница 85: ...CHAPTER 3 THEORY OF OPERATION 3 8 1 3 4 SDRAM A 64M bit SDRAM x 32 bits is used as the RAM Fig 3 8 HL 1850 ...
Страница 86: ...HL 1850 1870N SERVICE MANUAL 3 9 Two 64M bit SDRAMs x 16 bits are used as the RAM Fig 3 9 HL 1870N ...
Страница 91: ...CHAPTER 3 THEORY OF OPERATION 3 14 Fig 3 15 ...
Страница 101: ...CHAPTER 3 THEORY OF OPERATION 3 24 ...
Страница 109: ...CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY 4 2 ...
Страница 131: ...CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY 4 24 Fig 4 39 ...
Страница 141: ...CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY 4 34 Never touch the surface of the heat roller ...
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Страница 158: ...CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY 4 51 Fig 4 80 ...
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Страница 167: ...CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY 4 60 Fig 4 91 ...
Страница 169: ...CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY 4 62 Fig 4 93 ...
Страница 172: ...CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY 4 65 Fig 4 97 ...
Страница 174: ...CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY 4 67 3 27 Harness Winding Form ...
Страница 183: ...CHAPTER 5 PERIODIC MAINTENANCE 5 8 ...
Страница 186: ...HL 1850 1870N SERVICE MANUAL 5 11 ...
Страница 194: ...CHAPTER 6 TROUBLESHOOTING 6 8 error in this chapter ...
Страница 202: ...CHAPTER 6 TROUBLESHOOTING 6 16 ...
Страница 205: ...HL 1850 1870N SERVICE MANUAL 6 19 ...
Страница 210: ...CHAPTER 6 TROUBLESHOOTING 6 24 ...
Страница 237: ...HL 1850 1870N SERVICE MANUAL 6 51 No Refer and compare with I 15 ...
Страница 255: ...HL 1850 1870N SERVICE MANUAL 6 69 ...
Страница 261: ...CHAPTER 7 HIDDEN FUNCTIONS 7 6 DRAM CHECK START START DRAM TEST Tests DRAM data ...
Страница 270: ...HL 1850 1870N SERVICE MANUAL 7 15 ...
Страница 271: ......
Страница 272: ...Appendix 1 Connection Diagram HL 1850 1870N A 1 ...
Страница 273: ...Appendix 2 Main PCB Circuit Diagram HL 1850 1870N 1 6 CODE LJ8453001 B512078CIR 1 6 A 2 NAME ...
Страница 274: ...Appendix 3 Main PCB Circuit Diagram HL 1850 1870N 2 6 CODE LJ8453001 B512078CIR 2 6 A 3 NAME ...
Страница 275: ...Appendix 4 Main PCB Circuit Diagram HL 1850 1870N 3 6 CODE LJ8453001 B512078CIR 3 6 A 4 NAME ...
Страница 276: ...Appendix 5 Main PCB Circuit Diagram HL 1850 1870N 4 6 CODE LJ8453001 B512078CIR 4 6 A 5 NAME ...
Страница 277: ...Appendix 6 Main PCB Circuit Diagram HL 1850 1870N 5 6 CODE LJ8453001 B512078CIR 5 6 A 6 NAME ...
Страница 278: ...Appendix 7 Main PCB Circuit Diagram HL 1850 1870N 6 6 CODE LJ8453001 B512078CIR 6 6 A 7 NAME ...
Страница 281: ...Appendix 10 Network Board PCB Circuit Diagram HL 1850 1870N CODE LJ8439001 A 10 NAME B512058CIR ...
Страница 282: ...Appendix 11 Low voltage Power Supply PCB Circuit Diagram 100V A 11 NAME Low voltage PS Circuit 100V ...
Страница 283: ...Appendix 12 Low voltage Power Supply PCB Circuit Diagram 200V A 12 NAME Low voltage PS Circuit 200V ...
Страница 284: ...Appendix 13 High voltage Power Supply PCB Circuit Diagram A 13 NAME High voltage PS Circuit ...
Страница 303: ...APPENDIX A 32 ...