
Field Service Ver. 2.0 Jul. 2009
22. IMAGE QUALITY PROBLEM
885
TROUBLESHOOTING
13
Image Process
Adjustment
o
Gradation
Adjust
(Service Mode)
“Conv. Value” falls within the
specified range as checked through
gradation adjust.
Dark: 0 ± 100
Highlight: 0 ± 60
YES
Go to step 17.
14
Image Process
Adjustment
o
D Max Density
(Service Mode)
The problem has been eliminated
through the adjust of D Max.
NO
Go to next step.
15
Image Process
Adjustment
o
Stabilizer
o
Init Image
Stabilization
(Service Mode)
After the Init Image Stabiliza-
tion sequence has been completed,
run gradation adjust.
NO
Go to next step.
16
Printer control
board (PRCB)
PH relay board
(REYB/PH)
Check the connection of connectors,
harness, and flat cables between
PRCB and REYB/PH, and correct if
necessary.
NO
Change printer control board.
Change PH relay board.
17
The problem has been eliminated
through the checks of steps up to 16.
NO
Change imaging unit.
o
Change PH unit.
o
Change high voltage unit/2.
Step
Section
Check item
Result
Action
Y110571-1 Service Manual
Содержание d-color MF651
Страница 1: ...d Color MF651 d Color MF551 d Color MF451 Color Printer SERVICE MANUAL Code Y110571 1...
Страница 24: ...MEASURES TO TAKE IN CASE OF AN ACCIDENT S 22 Blank Page...
Страница 27: ...d Color MF651 d Color MF551 d Color MF451 Color Printer SERVICE MANUAL Code Y110571 1...
Страница 511: ...Field Service Ver 2 0 Jul 2009 10 UTILITY 451 ADJUSTMENT SETTING Blank Page Y110571 1 Service Manual...
Страница 716: ...16 MECHANICAL ADJUSTMENT Field Service Ver 2 0 Jul 2009 656 ADJUSTMENT SETTING Blank Page Service Manual Y110571 1...
Страница 1053: ...UPDATING STATUS DATE UPDATED PAGES PAGES CODE 10 2009 1ST EDITION 1053053 Y110571 1...