Sharp SF-2040 Service Manual page 119

Main code Sub code
44 06 Compulsory execution of process control
NORMAL
T/S
PHOTO
GB ADJUST
TARGET
ID GAIN
MARK
MARK B
DM GAIN
BASE 1,2,3
PATCH123
l
m
n
M1
M2
l*m*n
07 Drum mark sensor/image density sensor gain select check
The image density sensor level can be checked for selection of each gain rank.
Since the max. difference in amplifier rates between two gains is 132%, supposing the max. sensor
input is 4.8V, the gain rank is increased by +1 for 3.6V.
SIMULATION No.44-6
Process control execution
: ****
NORMAL
: ****
T/S
: ****
PHOTO
: ***
GB ADJUST
: ***
TARGET
: *
ID GAIN
MARK : ***
: ***
MARK B
: *
DM GAIN
: ***
l*m*n
: manual mode grid bias (350 ∼ 1150V)
: Toner save mode grid bias (350 ∼ 1150V)
: Photo mode grid bias (350 ∼ 1150V)
: Grid bias correction value after measurement (±0 ∼ 999V)
: Patch/surface. Patch reference value when surface is 255. (255 = Surface)
: Image density sensor gain rank in execution (1 ∼ 7)
: Drum mark sensor mark level in execution (0 ∼ 255 = 5V)
: Drum mark sensor surface level in execution (0 ∼ 255 = 5V)
: Drum mark sensor gain rank in execution (1 ∼ 7)
: Drum surface image density sensor level in execution (0 ∼ 255, 255 =5V)
: Toner patch image density sensor level in execution (0 ∼ 255, 255 =5V)
: Vg correction coefficient
: Dirt correction coefficient
: Film wear correction coefficient
: Dirt correction coefficient (M1)
: Dirt correction coefficient (M2)
: Vc1 correction coefficient
SIMULATION No.44-7
Gain select check of drum mark sensor
and image density sensor: 0 ∼ 255 (5V)
: ***
DM7
: ***
DM6
: ***
DM5
: ***
DM4
: ***
DM3
: ***
DM2
: ***
DM1
8 – 13
Description
: ***
PATCH1
: ***
BASE1
: ***
PATCH2
: ***
BASE2
: ***
PATCH3
: ***
BASE3
l : ***
: ***
m
: ***
n
: ***
M1
M2 : ***
: ***
ID7
: ***
ID6
: ***
ID5
: ***
ID4
: ***
ID3
: ***
ID2
: ***
ID1
Ref. Page
: 0~255, 255 = 5V