Sharp AR-C262M (serv.man3) Service Manual ▷ View online
AR-C262M SETTING AND ADJUSTMENTS 8 - 2
Since the output voltage cannot be checked directly due to the
machine structure, the adjustment value of the simulation is set to
the default (specified value) to perform the adjustment.
machine structure, the adjustment value of the simulation is set to
the default (specified value) to perform the adjustment.
This adjustment must be performed in the following cases:
• When the high voltage power PWB is replaced.
• When a U2 trouble occurs.
• When the PCU PWB is replaced.
• When the EEPROM of the PCU PWB is replaced.
1) Enter the SIM 8-2 mode.
SIM 8-2
2) Select the output mode to be adjusted with the color key and
scroll key.
3) Enter the adjustment value (specified value), and press the
[OK] key.
By entering the default value (specified value), the specified
voltage is outputted.
voltage is outputted.
Remark: When the default value is set, the specified voltage is
outputted.
There is, therefore, no need to check the output voltage
unless there is a doubt for any abnormality in the output
voltage.
If there is a need to check that the normal voltage is out-
putted or to adjust by referring to the output voltage, use
the method below.
There is, therefore, no need to check the output voltage
unless there is a doubt for any abnormality in the output
voltage.
If there is a need to check that the normal voltage is out-
putted or to adjust by referring to the output voltage, use
the method below.
1) Remove the rear cover of the machine.
2) Remove the image process fan motor and the duct.
3) Connect the high voltage adjustment harnesses (DHAi-
3471FCZZ/DHAi-3472FCZZ) with the connectors CNMON
and CNMONK on the high voltage PWB.
and CNMONK on the high voltage PWB.
4) Enter the SIM8-1 mode.
5) Select the output mode to be adjusted with the color key and
the scroll key.
6) Check that the pin numbers of the connectors CNMON and
CNMONK are properly assigned to the connector pin numbers
of the high voltage adjustment harness.
of the high voltage adjustment harness.
7) Apply a digital multi-meter to the connector pins of the high
voltage adjustment harness corresponding to the output mode
to be adjusted.
to be adjusted.
ADJ 1
High voltage adjustment
ADJ 1A
Main charger grid voltage adjustment
Color
Item Operation
mode
Adjustment value
Main charger grid voltage
Monitor (High voltage PWB)
Pin
No.
Actual
voltage
Adjustment
range
Specified
value
(Default)
Monitor voltage
(Specified
value)
Connector
K
A: HIGH SPEED
High speed (140mm/s) (B & W)
180 – 700
620
53.5 ± 0.2v
CNMONK
1
–620v
B: MIDDLE SPEED Middle speed (117mm/s) (Color) (B & W)
180 – 700
620
53.5 ± 0.2v
CNMONK
1
–620v
C: LOW SPEED
Low speed (58.5mm/s) (Color) (B & W)
(Special paper)
(Special paper)
180 – 700
590
50.6 ± 0.2v
CNMONK
1
–590v
C
A: MIDDLE SPEED Middle speed (117mm/s) (Color) (B & W)
180 – 700
620
53.5 ± 0.2v
CNMON
3
–620v
B: LOW SPEED
Low speed (58.5mm/s) (Color) (B & W)
(Special paper)
(Special paper)
180 – 700
590
50.6 ± 0.2v
CNMON
3
–590v
M
A: MIDDLE SPEED Middle speed (117mm/s) (Color) (B & W)
180 – 700
620
53.5 ± 0.2v
CNMON
7
–620v
B: LOW SPEED
Low speed (58.5mm/s) (Color) (B & W)
(Special paper)
(Special paper)
180 – 700
590
50.6 ± 0.2v
CNMON
7
–590v
Y
A: MIDDLE SPEED Middle speed (117mm/s) (Color) (B & W)
180 – 700
620
53.5 ± 0.2v
CNMON
11
–620v
B: LOW SPEED
Low speed (58.5mm/s) (Color) (B & W)
(Special paper)
(Special paper)
180 – 700
590
50.6 ± 0.2v
CNMON
11
–590v
A
B
AR-C262M SETTING AND ADJUSTMENTS 8 - 3
8) Press the [EXECUTE] key.
The main charger grid voltage is outputted for 30sec.
If this operation is performed for a long time, the OPC drum
and the developing roller may be damaged. Be careful to per-
form this operation in a short time.
and the developing roller may be damaged. Be careful to per-
form this operation in a short time.
It is advisable to install an unnecessary developing unit and
unnecessary OPC drums to the machine for this adjustment.
unnecessary OPC drums to the machine for this adjustment.
9) Check the monitor voltage with the digital multi-meter.
If the monitor voltage is not in the above specified range,
change the adjustment value and adjust again. If the specified
voltage is not obtained even by changing the adjustment
value, the following parts may be judged as defective.
change the adjustment value and adjust again. If the specified
voltage is not obtained even by changing the adjustment
value, the following parts may be judged as defective.
High voltage PWB
PCU PWB
Developing unit
Photoconductor unit
High voltage circuit electrode
This adjustment must be performed in the following cases:
• When the high voltage power PWB is replaced.
• When a U2 trouble occurs.
• When the PCU PWB is replaced.
• When the EEPROM of the PCU PWB is replaced.
1) Enter the SIM 8-1 mode.
SIM 8-1
2) Select the output mode to be adjusted with the color key and
the scroll key.
3) Enter the adjustment value (specified value), and press the
[OK] key.
By entering the default value (specified value), the specified
voltage is outputted.
voltage is outputted.
Remark: When the default value is set, the specified voltage is
outputted.
There is, therefore, no need to check the output voltage
unless there is a doubt for any abnormality in the output
voltage.
If there is a need to check that the normal voltage is out-
putted or to adjust by referring to the output voltage, use
the method below.
There is, therefore, no need to check the output voltage
unless there is a doubt for any abnormality in the output
voltage.
If there is a need to check that the normal voltage is out-
putted or to adjust by referring to the output voltage, use
the method below.
1) Remove the rear cover of the machine.
2) Remove the image process fan motor and the duct.
3) Connect the high voltage adjustment harnesses (DHAi-
3471FCZZ/DHAi-3472FCZZ) with the connectors CNMON
and CNMONK on the high voltage PWB.
and CNMONK on the high voltage PWB.
4) Enter the SIM8-2 mode.
5) Select the output mode to be adjusted with the color key and
the scroll key.
6) Check that the pin numbers of the connectors CNMON and
CNMONK are properly assigned to the connector pin numbers
of the high voltage adjustment harness.
of the high voltage adjustment harness.
ADJ 1B
DV bias voltage adjustment
Color
Item
Operation mode
Adjustment value
Developing bias voltage
Monitor (High voltage PWB)
Pin
No.
Actual
voltage
Adjustment
range
Specified
value
(Default)
Monitor voltage
(Specified
value)
Connector
K
A: HIGH SPEED
High speed (140mm/s) (B & W)
0 – 585
215
3.94 ± 0.1V
CNMONK
3
– 215v
B: MIDDLE SPEED Middle speed (117mm/s) (Color) (B & W)
0 – 585
215
3.94 ± 0.1V
CNMONK
3
– 215v
C: LOW SPEED
Low speed (58.5mm/s) (Color) (B & W)
(Special paper)
(Special paper)
0 – 585
185
3.46 ± 0.1V
CNMONK
3
– 185v
C
A: MIDDLE SPEED Middle speed (117mm/s) (Color) (B & W)
0 – 585
265
5.76 ± 0.1V
CNMON
1
– 265v
B: LOW SPEED
Low speed (58.5mm/s) (Color) (B & W)
(Special paper)
(Special paper)
0 – 585
235
4.75 ± 0.1V
CNMON
1
– 235v
M
A: MIDDLE SPEED Middle speed (117mm/s) (Color) (B & W)
0 – 585
265
5.76 ± 0.1V
CNMON
5
– 265v
B: LOW SPEED
Low speed (58.5mm/s) (Color) (B & W)
(Special paper)
(Special paper)
0 – 585
235
4.75 ± 0.1V
CNMON
5
– 235v
Y
A: MIDDLE SPEED Middle speed (117mm/s) (Color) (B & W)
0 – 585
240
4.75 ± 0.1V
CNMON
9
– 240v
B: LOW SPEED
Low speed (58.5mm/s) (Color) (B & W)
(Special paper)
(Special paper)
0 – 585
210
3.78 ± 0.1V
CNMON
9
– 210v
A
B
AR-C262M SETTING AND ADJUSTMENTS 8 - 4
7) Apply a digital multi-meter to the connector pins of the high
voltage adjustment harness corresponding to the output mode
to be adjusted.
to be adjusted.
8) Press the [EXECUTE] key.
The developing bias voltage is outputted for 30sec.
If this operation is performed for a long time, the OPC drum
and the developing roller may be damaged. Be careful to per-
form this operation in a short time.
and the developing roller may be damaged. Be careful to per-
form this operation in a short time.
It is advisable to install an unnecessary developing unit and
unnecessary OPC drums to the machine for this adjustment.
unnecessary OPC drums to the machine for this adjustment.
9) Check the monitor voltage with the digital multi-meter.
If the monitor voltage is not in the above specified range,
change the adjustment value and adjust again. If the specified
voltage is not obtained even by changing the adjustment
value, the following parts may be judged as defective.
change the adjustment value and adjust again. If the specified
voltage is not obtained even by changing the adjustment
value, the following parts may be judged as defective.
High voltage PWB
PCU PWB
Developing unit
Photoconductor unit
High voltage circuit electrode
This adjustment must be performed in the following cases:
• When the high voltage power PWB is replaced.
• When a U2 trouble occurs.
• When the PCU PWB is replaced.
• When the EEPROM of the PCU PWB is replaced.
1) Enter the SIM 8-6 mode.
SIM 8-6
2) Select the mode to be adjusted with the color key and scroll
key.
3) Enter the adjustment value (specified value), and press the
[OK] key.
By entering the default value (specified value), the specified
voltage is outputted.
voltage is outputted.
Press the [EXECUTE] key to output the transfer voltage.
The image density sensor sections are of uneven quality in parts
and assembly. This causes variations in the absolute detection
level between machines. This adjustment (calibration) is per-
formed to correct the variations.
and assembly. This causes variations in the absolute detection
level between machines. This adjustment (calibration) is per-
formed to correct the variations.
This adjustment is required in the following cases:
• When the image density sensor is replaced.
• When the transfer unit is replaced.
• When maintenance is performed.
• When U2 trouble occurs.
• When the PCU PWB is replaced.
• When the EEPROM on the PCU PWB is repalced.
The targets of the adjustment are the color image density sensor
and the black image density sensor. There are following adjust-
ment methods:
and the black image density sensor. There are following adjust-
ment methods:
• Color image density sensor adjustment (adjustment by the
adjustment jig) SIM44-13
• Black image sensity sensor adjustment SIM44-2
• Image density sensor adjustment (The color image density sen-
sor and the black image density sensor are adjusted at the
same time.) (Simple adjustment) SIM44-36
same time.) (Simple adjustment) SIM44-36
Normally the following adjustments are executed:
• ADJ 2A Color image density sensor adjustment (adjustment by
the adjustment jig) (SIM44-13)
• ADJ 2B Black image density sensor adjustment (SIM44-2)
ADJ 1C
Transfer voltage adjustment
Item
Print mode
Standard setting
value (Default)
Adjustment
range
Output voltage (Kv)
K
C
M
Y
K
C
M
Y
A
PLAIN_SPX_CL
Color
Normal paper
117mm/s
173 159 132 132
51 - 255
2.4
2.4
2.4
2.4
B
PLAIN_DPX_CL
Color
Normal paper(Duplex mode)
117mm/s
188 173 142 142
2.7
2.7
2.7
2.7
C
OHP1_CL
Color
Transparency film 1
117mm/s
204 187 153 153
3
3
3
3
D
OHP2_CL
Color
Transparency film 2
58.5mm/s 137 150 153 163
1.7
2.2
3
3.3
E
HEAVY P1_SPX_CL
Color
Thick paper 1
58.5mm/s 158 146 122 122
2.1
2.1
2.1
2.1
F
HEAVY_P1_DPX_CL
Color
Thick paper 1(Duplex mode)
58.5mm/s 188 173 142 142
2.7
2.7
2.7
2.7
G
HEAVY_P2_CL
Color
Thick paper 2
58.5mm/s 173 159 132 132
2.4
2.4
2.4
2.4
H
ENV_CL
Color
Envelope
117mm/s
163 150 125 125
2.2
2.2
2.2
2.2
I
PLAIN_SPX_BW
B & W Normal paper
140mm/s
178
2.5
J
PLAIN_DPX_BW
B & W Normal paper(Duplex mode)
140mm/s
178
2.5
K
OHP1_BW
B & W Transparency film 1
117mm/s
204
3
L
OHP2_BW
B & W Transparency film 2
58.5mm/s 137
1.7
M
HEAVY_P1_SPX_BW
B & W Thick paper 1
58.5mm/s 147
1.9
N
HEAVY_P1_DPX_BW
B & W Thick paper 1(Duplex mode)
58.5mm/s 178
2.5
O
HEAVY_P2_BW
B & W Thick paper 2
58.5mm/s 163
2.2
P
ENV_BW
B & W Envelope
140mm/s
168
2.3
Color
Actual output variable range
Voltage change/Adjustment value (1) (Varying amount when the adjustment value is changed by 1)
K
0 to 4000V
About 19.6V
C
0 to 4500V
About 22.1V
M
0 to 6000V
About 29.4V
Y
0 to 6000V
About 29.4V
ADJ 2
Image density sensor adjustment
AR-C262M SETTING AND ADJUSTMENTS 8 - 5
Note:
There are two methods to adjust the color image density sensor;
one method uses the adjustment jig, and the other method does
not use it.
one method uses the adjustment jig, and the other method does
not use it.
If there is no adjustment jig available, the simple adjustment
(SIM44-36) can be made, which may, however, result in insuffi-
cient adjustment accuracy depending on the machine condition.
(SIM44-36) can be made, which may, however, result in insuffi-
cient adjustment accuracy depending on the machine condition.
If toner, the OPC drum, and the transfer belt are not new ones or
almost new ones, the simple adjustment is not recommended.
almost new ones, the simple adjustment is not recommended.
Even though the machine conditions are well, the adjustment by
use of the adjustmment jig gives a higher adjustment accuracy
than the adjustment without the adjustment jig (simple adjust-
ment).
use of the adjustmment jig gives a higher adjustment accuracy
than the adjustment without the adjustment jig (simple adjust-
ment).
Also note that SIM44-36 must not executed unnecessarily after
execution of the color image density sensor adjustment (adjust-
ment by the adjustment jig) with SIM44-13.
execution of the color image density sensor adjustment (adjust-
ment by the adjustment jig) with SIM44-13.
If SIM 44-36 is executed, the contents of the color image density
sensor adjustment (adjustment by the adjustment jig) with SIM44-
13 are erased, and the adjustment result of SIM44-36 is saved.
sensor adjustment (adjustment by the adjustment jig) with SIM44-
13 are erased, and the adjustment result of SIM44-36 is saved.
When the color image density sensor is adjusted with SIM44-13
and the black image density sensor is adjsuted with SIM 44-2, the
adjustment with SIM44-36 is not required.
and the black image density sensor is adjsuted with SIM 44-2, the
adjustment with SIM44-36 is not required.
To adjust the black image density sensor, the adjustment jig is not
required.
required.
Before executing this adjustment, check the following items:
• Check that the color imagte density sensor is clean.
• Check that the image density sensor calibration plate is clean.
• Check that the transfer belt is free from scratches.
1) Open the front cover of the machine.
2) Insert the color image density sensor adjustment jig
(CPLTM6305FC01) into the long hole in the transfer unit
frame, and close the left cabinet.
frame, and close the left cabinet.
3) With the front cover of the machine open (with the cover open/
close switch OFF), turn on the power.
4) Perform
SIM 44-13
5) Close the front cover of the machine.
6) Press the [EXECUTE] key.
The adjustment is performed automatically. When the adjust-
ment is completed, the adjustment result is displayed and the
the [EXECUTE] key display returns to the original state.
ment is completed, the adjustment result is displayed and the
the [EXECUTE] key display returns to the original state.
7) Remove the color image density sensor adjustment jig.
If the adjustment is not completed normally, "ERROR" is dis-
played.
played.
In that case, check the following sections for no abnormality. If
there is any abnormality, repair the part and perform the adjust-
ment again. In case of an error, the adjustment result is not
revised.
there is any abnormality, repair the part and perform the adjust-
ment again. In case of an error, the adjustment result is not
revised.
• Image density sensor
• PCU PWB
• Transfer belt
Note:
The color image density sensor adjustment jig is available in the
following two forms:
following two forms:
• The jig metal plate with the calibration sheet attached to it
(CPLTM6305FC01)
• Calibration sheet (for replacement) (TLABZ4843FCZZ)
TLABZ4843FCZZ is the calibration sheet for replacement. When
the calibration sheet attached to CPLTM6305FC01 is dritied or
scratched too much to be used, replace only the calibration sheet
with a new one.
the calibration sheet attached to CPLTM6305FC01 is dritied or
scratched too much to be used, replace only the calibration sheet
with a new one.
ADJ 2A
Color image density sensor
adjustment
(adjustment by the adjustment jig)
adjustment
(adjustment by the adjustment jig)
Display
Content
Min
Value
Max
Value
Default
value
A PCS_C
CARB ADJ
Color image density
sensor LED current
adjustment target value
sensor LED current
adjustment target value
1
255
108
B PCS_C
DARK
Color image density
sensor dark voltage level
sensor dark voltage level
0
255
0
C PCS_C
LED ADJ
Color image density
sensor current
adjustment value
sensor current
adjustment value
1
255
51
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