Sharp AR-C150 Service Manual page 58

(6)
(5)
GND
∗
With all the OPC drums removed from the machine, bring the high
voltage probe into contact with the high voltage PWB GB pin to
check the adjustment value.
If an effective value meter and a high voltage probe are not available,
refer to the table below to enter the adjustment value.
This allows to make a simple adjustment.
Main charger grid voltage adjustment value
SIM 8-2 adjustment value
Color
AR-C100/C150
K A 525
C B 525
M C 525
Y D 525
ADJ 2 DV bias voltage adjustment
This adjustment must be performed in the following cases:
•
When the high voltage power (MC/DV) PWB is replaced.
•
When a U2 trouble occurs.
•
When the PCU main PWB is replaced.
•
When the EEPROM of the PCU main PWB is replaced.
1) Enter the SIM 8-1 mode.
2) Select the color mode to be adjusted with the scroll key and press
the [EXECUTE] key.
3) Check the output voltage with the high voltage probe, and adjust
the value of each color so that the specification in the table below
is satisfied.
Enter the adjustment value with the 10-key and press the [OK]
key.
Color Normal mode adjustment spec
– 325 ± 5V
K
– 325 ± 5V
C
– 325 ± 5V
M
– 325 ± 5V
Y
(8)
(7)
AR-C250 AR-C160/C270
545 545
545 555
545 555
545 555
Check pin
(1)
(2)
(3)
(4)
(1)
GND
∗
Set the developing unit (K, C, M, Y), bring the high voltage probe
into contact with the high voltage PWB GB pin to check the
adjustment value.
If an effective value meter and a high voltage probe are not available,
refer to the table below to enter the adjustment value.
This allows to make a simple adjustment.
Developing bias voltage adjustment value
Color SIM 8-1 adjustment value
K A
C B
M C
Y D
ADJ 3 Transfer voltage adjustment
This adjustment must be performed in the following cases:
•
When the high voltage power (TC) PWB is replaced.
•
When a U2 trouble occurs.
•
When the PCU main PWB is replaced.
•
When the EEPROM of the PCU main PWB is replaced.
1) Enter the SIM 44-30 mode, enter the following value for each
mode and each color, and enter the [OK] key. (AR-C250/C160/
C270) (New version of AR-C150)
Enter the SIM 8-6 mode and enter the following values for each
color and press the [OK] key. (Old version of AR-C150)
Transfer voltage input values
Normal paper mode
ADU mode
OHP mode C: TRANSPARENCY
Thick paper mode D: HEAVY PAPER
7 – 4
(4)
(3)
(2)
325
325
325
325
Display BK C M
A: SPX 178 164 123
B: DPX 178 164 123
204 209 167
204 187 138
Y
123
123
182
138