Adjusting High Voltage Values; Adjust The Main Charger Grid Voltage - Sharp MX-1810U Service Manual

ADJ 2

Adjusting high voltage values

2-A

Adjust the main charger grid voltage

This adjustment must be performed in the following cases:
* When the MC/DV high voltage power PWB is replaced.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
1) Enter the SIM 8-2 mode.
2) Select an output mode and an item to be adjusted.
Item/Display (Mode)
MIDDLE A MIDDLE SPEED GB_K
B MIDDLE SPEED GB_C
C MIDDLE SPEED GB_M
D MIDDLE SPEED GB_Y
LOW A LOW SPEED GB_K
B LOW SPEED GB_C
C LOW SPEED GB_M
D LOW SPEED GB_Y
3) Enter the adjustment value (specified value) in the middle
speed mode, and press [OK] key.
Enter the adjustment value of each mode which is specified on
the label attached on the MC/DV high voltage power PWB.
When [EXECUTE] key is pressed, the voltage entered in the
procedure 3) is outputted for 30sec and the set value is saved.
When [EXECUTE] key is pressed again, the output is stopped.
Content
Main charger grid voltage (Middle speed mode)
Main charger grid voltage (Middle speed mode)
Main charger grid voltage (Middle speed mode)
Main charger grid voltage (Middle speed mode)
Main charger grid voltage (Low speed mode)
Main charger grid voltage (Low speed mode)
Main charger grid voltage (Low speed mode)
Main charger grid voltage (Low speed mode)
MX-3610N ADJUSTMENTS AND SETTINGS 4 – 6
10-key
EXECUTE
Adjustment
range
K 150 - 850
C 150 - 850
M 150 - 850
Y 150 - 850
K 150 - 850
C 150 - 850
M 150 - 850
Y 150 - 850
Note that the adjustment value may differ depending on the MC/DV
high voltage power PWB.
Since the adjustment value label is attached on the MC/DV high
voltage PWB, the PWB must be removed in order to check the
adjustment value.
This is a troublesome procedure. Therefore, it is advisable to put
down the adjustment value in advance.
When the adjustment value (specified value) of the middle speed
mode is set, the adjustment values of the other modes are auto-
matically set according to the middle speed mode setting in a cer-
tain relationship.
Since the high voltage output cannot be checked with a digital multi
meter in this model, a judgment of the output must be made by
checking the print image quality.
EXECUTE
or after 30 sec.
Actual voltage
18cpm/
26cpm/
20cpm/ 36cpm
31cpm
23cpm machine
machine
machine
–615V5V –620V5V –625V5V
–615V5V –620V5V –625V5V
–615V5V –620V5V –625V5V
–615V5V –620V5V –625V5V
–610V5V –610V5V –610V5V
–590V5V –590V5V –590V5V
–590V5V –590V5V –590V5V
–590V5V –590V5V –590V5V