Sharp AR-M236 Service Manual page 52

8-11
Purpose Adjustment/Operation test/check
Function Used to check and adjust the operation of the main
(Purpose) charger grid voltage (high mode) in each printer mode
and the control circuit.
Section Image process (Photoconductor/Developing/Transfer/
Cleaning)
Photo conductor
Operation/procedure
1. Touch the exposure mode to be changed.
The current set value is highlighted.
2. Enter the set value with the 10-key.
3. Press the [START] key.
Output is made with the entered value for 30sec, and the display
returns to the original state.
Item Content
1 DENS1(600) Density 1 (600dpi)
2 DENS2(600) Density 2 (600dpi)
3 DENS3(600) Density 3 (600dpi)
4 DENS4(600) Density 4 (600dpi)
5 DENS5(600) Density 5 (600dpi)
6 TS(600) Toner save (600dpi)
7 DENS1(1200) Density 1 (1200dpi)
8 DENS2(1200) Density 2 (1200dpi)
9 DENS3(1200) Density 3 (1200dpi)
10 DENS4(1200) Density 4 (1200dpi)
11 DENS5(1200) Density 5 (1200dpi)
Min. unit: 25V increment
NO. Set value Grid High
1 480 –480V
2 505 –505V
3 530 –530V
4 555 –555V
5 580 –580V
6 605 –605V
7 630 –630V
8 655 –655V
*1. The negative value of the set value corresponds to the grid high
output voltage.
*2. The set values can be selected from the above 8 patterns only.
*3. The selected pattern determines the grid high voltage and the grid
low voltage.
If, for example, the grid high voltage is set to –480V (pattern 1), the
grid low voltage is –350V.
8-12
Purpose Adjustment/Operation test/check
Function Used to check and adjust the operation of the main
(Purpose) charger grid voltage (low mode) in each printer mode
and the control circuit.
Section Image process (Photoconductor/Developing/Transfer/
Cleaning)
Photo conductor
Installation
Default
range
1-8 5 (–580V)
5 (–580V)
5 (–580V)
5 (–580V)
7 (–630V)
3 (–530V)
1 (–480V)
3 (–530V)
4 (–555V)
5 (–580V)
7 (–630V)
Grid Low
–350V
–375V
–400V
–425V
–450V
–475V
–500V
–525V
AR-M236/M276/M237/M277 SIMULATION 8 - 13
Operation/procedure
1. Touch the exposure mode to be changed.
The current set value is highlighted.
2. Enter the set value with the 10-key.
3. Press the [START] key.
Output is made with the entered value for 30sec, and the display
returns to the original state.
Item Content
1 DENS1(600) Density 1 (600dpi)
2 DENS2(600) Density 2 (600dpi)
3 DENS3(600) Density 3 (600dpi)
4 DENS4(600) Density 4 (600dpi)
5 DENS5(600) Density 5 (600dpi)
6 TS(600) Toner save (600dpi)
7 DENS1(1200) Density 1 (1200dpi)
8 DENS2(1200) Density 2 (1200dpi)
9 DENS3(1200) Density 3 (1200dpi)
10 DENS4(1200) Density 4 (1200dpi)
11 DENS5(1200) Density 5 (1200dpi)
Min. unit: 25V increment
NO. Set value Grid High
1 480 –480V
2 505 –505V
3 530 –530V
4 555 –555V
5 580 –580V
6 605 –605V
7 630 –630V
8 655 –655V
*1. The negative value of the set value corresponds to the grid high
output voltage.
*2. The set values can be selected from the above 8 patterns only.
*3. The selected pattern determines the grid high voltage and the grid
low voltage.
If, for example, the grid high voltage is set to –480V (pattern 1), the
grid low voltage is –350V.
8-13
Purpose Adjustment/Operation test/check
Function Used to check and adjust the operation of the
(Purpose) developing bias voltage in FAX mode and the control
circuit.
Section Image process (Photoconductor/Developing/Transfer/
Cleaning)
Developer/Toner hopper
Operation/procedure
1. Enter the set value with the 10-key.
2. Press the [START] key.
Output is made with the entered value for 30sec. and the display
returns to the original state.
Setting range 200-550
Default 426
Installation
Default
range
1-8 5 (–450V)
5 (–450V)
5 (–450V)
5 (–450V)
7 (–500V)
3 (–400V)
1 (–350V)
3 (–400V)
4 (–425V)
5 (–450V)
7 (–500V)
Grid Low
–350V
–375V
–400V
–425V
–450V
–475V
–500V
–525V