AR-C260 (serv.man11). (8) Setting Adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 2

AR-C260/C260M  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.

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 volt-
age is outputted.

Remark: When the default value is set, the specified voltage is output-

ted. 
There is, therefore, no need to check the output voltage
unless there is a doubt for any abnormality in the output volt-
age. 
If there is a need to check that the normal voltage is output-
ted 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.

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. 

7) Apply a digital multi-meter to the connector pins of the high voltage

adjustment harness corresponding to the output mode to be
adjusted.

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)

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)

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)

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)

180 – 700

590

50.6 ± 0.2v

CNMON

11

–590v

A

B