MFC-8420/8820D/8820DN, DCP-8020/8025D/8025DN
SERVICE MANUAL
7-5
3.2
Printout of Scanning Compensation Data (Maintenance mode 05)
< Function >
The equipment prints out the white and black level data for scanning compensation.
< Operating Procedure >
Do not start this function merely after powering on the equipment but start it after carrying
out a sequence of scanning operation. Unless the equipment has carried out any scanning
operation, this function cannot print out correct scanning compensation data. This is
because at the start of scanning operation, the equipment initializes white and black level
data and takes in the scanning compensation reference data.
(1) Press the
0
and
5
keys in this order in the initial stage of the maintenance mode.
The "WHITE LEVEL 1" will appear on the LCD.
(2) The equipment prints out the scanning compensation data list containing the following:
a) Dark output adjustment value (CH0)
1Byte
b) Dark output adjustment value (CH1)
1Byte
c)
Bright output adjustment value (CH0)
1Byte
d) Bright output adjustment value (CH1)
1Byte
e) Black level data (CH0)
1Byte
f)
Black level data (CH1)
1Byte
g) White level MIN data (CH0)
1Byte
h) White level MIN data (CH1)
1Byte
i)
White level MAX data (CH0)
1Byte
j)
White level MAX data (CH1)
1Byte
k) Background color compensated data
1Byte
l)
White level data (CH0)
2568Byte
m) White level data (CH1)
2568Byte
(3) Upon completion of recording of the compensation data list, the equipment returns to
the initial stage of the maintenance mode.
NOTE:
If any data is abnormal, its code will be printed in inline style, as shown on the next page.
Summary of Contents for DCP-8020
Page 264: ...CHAPTER 7 MAINTENANCE MODE 7 6 Fig 7 3 l m a b c d e f g h i j k ...
Page 335: ...APPENDIX 4 CIRCUIT DIAGRAMS A 50 Appendix 4 1 Main PCB Circuit Diagram 1 6 ...
Page 337: ...APPENDIX 4 CIRCUIT DIAGRAMS A 52 Appendix 4 3 Main PCB Circuit Diagram 3 6 ...
Page 339: ...APPENDIX 4 CIRCUIT DIAGRAMS A 54 Appendix 4 5 Main PCB Circuit Diagram 5 6 ...
Page 341: ...APPENDIX 4 CIRCUIT DIAGRAMS A 56 Appendix 4 7 Driver PCB Circuit Diagram ...
Page 343: ...APPENDIX 4 CIRCUIT DIAGRAMS A 58 Appendix 4 9 Engine PCB Circuit Diagram 2 2 ...
Page 345: ...APPENDIX 4 CIRCUIT DIAGRAMS A 60 Appendix 4 11 NCU PCB Circuit Diagram Europe ...
Page 347: ...APPENDIX 4 CIRCUIT DIAGRAMS A 62 Appendix 4 13 NCU PCB Circuit Diagram Oceania ...
