Sharp AR-BC260 Service Manual page 157

8 -2
Purpose Adjustment/Operation test/check
Function Used to check and adjust the operation of each print
(Purpose) mode main charger grid voltage and the control
circuit.
Section Process
(Photoconductor, developing, transfer, cleaning)
Operation/ (The charging/grid output voltage in each print mode
Procedure can be adjusted and checked.)
1. Select the color mode with the [K], [C], [M], and
[Y] keys.
∗
When [EXECUTE] key is pressed, the display is
highlighted and the currently set voltage is
outputted.
(Set value)
Color Item
K A: HIGH SPEED High speed (117mm/s) (B & W)
B: MIDDLE SPEED Middle speed (78mm/s) (Color) (B & W)
C: LOW SPEED Low speed (58.5mm/s) (Color) (B & W)
(Special paper)
C A: MIDDLE SPEED Middle speed (78mm/s) (Color) (B & W)
B: LOW SPEED Low speed (58.5mm/s) (Color) (B & W)
(Special paper)
M A: MIDDLE SPEED Middle speed (78mm/s) (Color) (B & W)
B: LOW SPEED Low speed (58.5mm/s) (Color) (B & W)
(Special paper)
Y A: MIDDLE SPEED Middle speed (78mm/s) (Color) (B & W)
B: LOW SPEED Low speed (58.5mm/s) (Color) (B & W)
(Special paper)
8 -6
Purpose Adjustment/Operation test/check
Function Used to check and adjust the operation of the
(Purpose) transfer charger current and the control circuit.
Section Process (Photoconductor, developing,
transfer, cleaning)
Operation/ 1. Select the color mode with the [K], [C], [M], and
Procedure [Y] keys.
2. Select the copy mode with the scroll key.
3. Enter the adjustment value with the 10-key pad.
4. Press the [EXECUTE] key.
Operation mode
Adjustment
range
180 – 700
180 – 700
180 – 700
180 – 700
180 – 700
180 – 700
180 – 700
180 – 700
180 – 700
Transfer
AR-BC260 SIMULATION 9 - 19
↑
2. Select the print mode with [
3. Enter the adjustment value with the 10-key pad.
4. Press the [EXECUTE] key.
The [EXECUTE] key is highlighted, the adjustment value entered
in procedure 2 is set, and the voltage corresponding to the set
value is outputted.
The voltage is supplied for 30 sec, then the [EXECUTE] key
returns to the normal display.
If the [EXECUTE] key is pressed while the voltage is supplied, the
voltage output is stopped and the [EXECUTE] key returns to the
normal display.
Adjustment value
Monitor (High voltage PWB)
Specified Monitor voltage
value (Default) (Specified value)
620 53.5 ± 0.2v
620 53.5 ± 0.2v
620 53.5 ± 0.2v
620 53.5 ± 0.2v
620 53.5 ± 0.2v
620 53.5 ± 0.2v
620 53.5 ± 0.2v
620 53.5 ± 0.2v
620 53.5 ± 0.2v
The [EXECUTE] key is highlighted, the adjustment value entered
in procedure 2 is set, and the voltage corresponding to the set
value is outputted.
The voltage is supplied for 30 sec, then the [EXECUTE] key
returns to the normal display.
If the [EXECUTE] key is pressed while the voltage is supplied, the
voltage output is stopped and the [EXECUTE] key returns to the
normal display.
In this simulation, when the transfer voltage is supplied, the
transfer belt and the OPC drum rotates at the same time.
Therefore, the above parts are not damaged.
↓
] key and [ ] key.
Main charger grid voltage
Pin Actual
No. voltage
Connector
CNMONK 1 –620v
CNMONK 1 –620v
CNMONK 1 –620v
CNMON 3 –620v
CNMON 3 –620v
CNMON 7 –620v
CNMON 7 –620v
CNMON 11 –620v
CNMON 11 –620v