Copy Quality Adjustment; Light Intensity Adjustment (Sp4-001) - Ricoh FT5535 Service Manual

10. COPY QUALITY ADJUSTMENT

10.1 LIGHT INTENSITY ADJUSTMENT (SP4-001)

When:
Purpose:
Adjustment standard:
How:
NOTE: When replacing the drum, light intensity adjustment should be done
only after performing SP3-123.
If the light intensity is adjusted, ADS gain data and V
data are cleared. Therefore, after the light intensity adjustment, auto
ADS gain adjustment (SP4-201) and forced V
must be performed.
See "Practical SP Mode Use Tables" in section 4 for the exact order
in which SP modes must be done after changing major components.
1. Turn the main switch off.
2. Clean the following parts:
Item No.
Optics (mirrors, lens, reflectors,
(1)
and exposure glass)
Drum charge roller
(2)
Toner shield glass and green filter,
(3)
and erase lamp unit
3. Place an OS-A3 chart on the exposure glass.
4. Make a full size copy at manual image density level 4 (center) after the
copier has warmed up.
5. Check that level 2 of the gray scale is just visible on the copy.
FSM
CÓPIA NÃO CONTROLADA
When replacing the drum - After performing
SP3-123 (Drum initialization) and before exiting
SP mode.
To maintain the correct light intensity.
Level 2 of the gray scale on the OS-A3 test
chart should be just visible on the copy when
the 4th manual image density level is selected.
SP4-001 changes the exposure lamp voltage
from the ac drive circuit on the dc power supply
board.
Section
5-51
CÓPIA NÃO CONTROLADA
correction
L
detection (SP3-105)
L
Method
Damp cotton, and blower brush
Dry cloth or special cloth
(P/N A1539004)
Dry cloth and blower brush
A156/A160/A162