Sharp MX-4100N Service Manual page 165

: Oct. 24 2008
1
8-2
Purpose Operation test/check/adjustment
Function (Purpose) Used to check and adjust the operation of
the main charger grid voltage in each
printer mode and the control circuit.
* When the middle speed is adjusted, the
low speed are also adjusted simulta-
neously.
Section Process (Charging)
Operation/Procedure
1) Select a speed with [MIDDLE] and [LOW] keys on the touch
panel.
2) Select a target item to be adjusted with [↑] [↓] keys.
3) Enter the adjustment value with 10-key. (The value specified
on the label of the high voltage PWB must be entered.)
* When the key is pressed, the setting value of each
item can be changed with 1up (1down) collectively.
4) Press [EXECUTE] key.
The set value is saved and the voltage entered with step 3) is
output for 30 sec.
When [EXECUTE] key is pressed, the output is terminated.
8-6
Purpose Operation test/check/adjustment
Function (Purpose) Used to check and adjust the operation of
the transport voltage and the control circuit.
Section Process (Transport)
Operation/Procedure
1) Select a target item to be adjusted with [↑] [↓] buttons.
2) Enter the set value with 10-key.
Enter the default value specified on the following list.
3) Press [EXECUTE] key.
The set value is saved and the voltage corresponding to the
set value is output for 30 sec.
When [EXECUTE] key is pressed, the output is terminated.
Item/Display
A TC1 LOW SPEED CL K
B TC1 MIDDLE SPEED CL K
1
C TC1 LOW SPEED CL C
D TC1 MIDDLE SPEED CL C
E TC1 LOW SPEED CL M
F TC1 MIDDLE SPEED CL M
G TC1 LOW SPEED CL Y
H TC1 MIDDLE SPEED CL Y
I TC1 LOW SPEED BW K
J TC1 MIDDLE SPEED BW K
1
Content
Primary transport Color K
bias reference
value
C
M
Y
Black/ K
White
MX-5001N SIMULATION 6 – 18
Key Item/Display
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
Default value
Setting
41-sheet
range
machine
In low speed 51 - 255
In middle 146
speed
In low speed
In middle 146
speed
In low speed
In middle 146
speed
In low speed
In middle 146
speed
In low speed
In middle 146
speed
Adjustment
Content
range
K charging/grid bias set 150 - 850
value at middle speed
C charging/grid bias set 150 - 850
value at middle speed
M charging/grid bias 150 - 850
set value at middle
speed
Y charging/grid bias set 150 - 850
value at middle speed
K charging/grid bias set 150 - 850
value at low speed
C charging/grid bias set 150 - 850
value at low speed
M charging/grid bias 150 - 850
set value at low speed
Y charging/grid bias set 150 - 850
value at low speed
value of
Actual output
50-sheet
setting range
machine
95 2µA - 30µA
182
95
95
95
95
182
Default
actual
output
value
8µA
15µA
8µA
15µA
8µA
15µA
8µA
15µA
8µA
15µA