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5) Measure the distance between the marking position and surface P
of the developing unit, and check that the black unit is 13mm,
color unit 24mm.
color unit 24mm.
If the distance is not as specified above, loosen the fixing screw A
of the main pole adjustment plate, and move the adjustment plate
in the arrow direction to adjust.
of the main pole adjustment plate, and move the adjustment plate
in the arrow direction to adjust.
ADJ M3
Toner concentration control reference
level setting
level setting
This adjustment must be performed in the following case:
•
When the developer is replaced.
1) With the front cabinet open, enter the SIM 25-2 mode.
2) Close the front cabinet.
3) Select the developing unit to be adjusted.
4) When the [EXECUTE] key is pressed, it is highlighted. The OPC
drum drive motor rotates and the toner concentration sensor de-
tects toner concentration and the output value is displayed.
tects toner concentration and the output value is displayed.
After stirring for 3 min, the average value of toner concentration sen-
sor detection level is set (stored) as the reference toner concentration
control value.
sor detection level is set (stored) as the reference toner concentration
control value.
NOTE: When the operation is stopped in 3 min, the adjustment re-
sult is not registered.
When the [EXECUTE] key is pressed during rotation of the
motor, it is stopped and the [EXECUTE] key returns to the
normal display.
If "EE-EU" or "EE-EL" is displayed, it means that the refer-
ence toner concentration control value is not set normally.
EE-EL: Less than 79 (1.59V)
EE-EU: More than 177 (3.41V)
When the [EXECUTE] key is pressed during rotation of the
motor, it is stopped and the [EXECUTE] key returns to the
normal display.
If "EE-EU" or "EE-EL" is displayed, it means that the refer-
ence toner concentration control value is not set normally.
EE-EL: Less than 79 (1.59V)
EE-EU: More than 177 (3.41V)
5) Execute SIM 24-5 to clear the developer counter.
6) Execute SIM 44-27 to reset the half tone correction data (correc-
tion conditions) to the default.
NOTE: 1) When replacing the color developer, replace the yellow,
Magenta, and Cyan developers at the same time.
If only one developer is replaced, the color balance may
be abnormal.
The black developer can be replaced alone.
If only one developer is replaced, the color balance may
be abnormal.
The black developer can be replaced alone.
2) After replacement of developers and the photoconductor,
be sure to execute SIM 44-27 to reset the half tone
correction data (correction conditions) to the default level.
If the above procedure is ignored, half tone correction
may not be performed properly.
correction data (correction conditions) to the default level.
If the above procedure is ignored, half tone correction
may not be performed properly.
ADJ M4
High voltage adjustment
(Note) For adjustment of the output voltage, use internal impedance
of 1000Mohm or more and whose effective value can be
measured (Recommend: FLUKE87 FLUKE80K-40). Use a
high voltage probe.
measured (Recommend: FLUKE87 FLUKE80K-40). Use a
high voltage probe.
ADJ 1
Main charger grid 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 SIM 8-2 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.
is satisfied.
Color
Normal mode adjustment spec
Check pin
AR-C100/C150
AR-C250
AR-C160/C270
K
– 525
±
5V
– 545
±
5V
– 545
±
5V
(5)
C
– 525
±
5V
– 545
±
5V
– 555
±
5V
(6)
M
– 525
±
5V
– 545
±
5V
– 555
±
5V
(7)
Y
– 525
±
5V
– 545
±
5V
– 555
±
5V
(8)
Enter the adjustment value with the 10-key and press the [OK] key.
2 ~ 3mm
P
A
2 ~ 3mm
13.0mm
black
A
2 ~ 3mm
24.0mm
color
7 – 3
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