AR-FX4. Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 12

AR-FX4 SIMULATION - 1

• Selection of the main code and the sub code is set with the [START]

key.

• There are two or more screens, the adjustment "Current page/Max.

page" is displayed. Press [

↑

] key (previous page) or [

↓

] key to select

a screen.

Enter the adjustment value and press the [OK] key, and output opera-
tion is performed for 30sec.

The minimum increment is 2V.
The result of (Set value – 199) / 2 is stored in the EEPROM.
When reading a value from the EEPROM, the value of (EEP value *2)
+ 200 is used as the set value.
Therefore, the set value entered must be an even number. If an odd
number is entered the entered odd number + 1 is displayed after
pressing [OK] key.

Enter the adjustment value and press the [OK] key, and output opera-
tion is performed for 30sec.

The input value is in the increment of –25V.

Procedure

Key operation

1 Simulation mode selection

2 Main code selection

3 Sub code selection

4

Selection of the mode and 
item

5 Start simulation operation

6

Returns to the sub code 
selection.

Simulation mode clear

Code

Function

Main

Sub

8

13

Used to check and adjust the operation of the 
developing bias voltage in FAX mode and the 
control circuit.

14

Used to check and adjust the operation of the main 
charger grid voltage (high mode) in FAX mode and 
the control circuit.

15

Used to check and adjust the operation of the main 
charger grid voltage (low mode) in FAX mode and 
the control circuit.

22

11

FAX related counter display

24

10

FAX related counter clear

26

1

Used to set options. (This simulation is used to 
make option setting when an option is installed.)

60

Used to set enable/disable of the FAX mode key 
when FAX is not installed. (When FAX is installed, 
the FAX mode is enabled regardless of this setup.)

46

12

FAX exposure level adjustment (batch)

13 to 

16

FAX exposure level adjustment (individual)

48

8

FAX magnification ratio adjustment (read)

9

FAX magnification ratio adjustment (print)

10

FAX auto reduction magnification ratio (print).

50

8

FAX lead edge adjustment (read)

9

FAX lead edge adjustment (print)

66

1

FAX related soft SW setting

2

Initial set for the value of the FAX soft SW

3

FAX PWB memory check

4

Signal send mode

6

Printing the confidential password

7

Image data print

10

Image data memory clear

11

300bps signals send

13

Send test and adjustment of the dial pulse and 
DTMF signal.

17

DTMF signal send

21

FAX information print

30

TEL/LIU state change recognition

32

Receive data check

34

Communication time measurement display

#

→

C

INTERRUPT

→

→

INTERRUPT

10-key (Input main code)

→

START

10-key (Input sub code)

→

START

10-key and

↑ ↓

START

OK or

INTERRUPT

CA

66

37

Speaker sound volume adjustment

38

Time setting/check

50

The FAST area of SRAM is cleared.

53

SRAM backup

8-13

Adjustment/Operation test/check

Used to check and adjust the operation of the 
developing bias voltage in FAX mode and the control 
circuit.

Image process (Photoconductor/Developping/
Transfer/Cleaning)

Developer/Toner hopper

(Initial screen)

(Executing screen)

Setting range

200-550

Default

426

8-14

Adjustment/Operation test/check

Used to check and adjust the operation of the main 
charger grid voltage (high mode) in FAX mode and the 
control circuit.

Image process (Photoconductor/Developping/
Transfer/Cleaning)
Photo conductor

(Initial screen)

(Executing screen)

Setting range

1-8

Default

5

Code

Function

Main

Sub

Sim8-13 DV BIAS FAX

FAX             426

EXEC [200-550]  

4260

Sim8-13 DV BIAS FAX

FAX             426

EXEC

 [200-550]  

426

Sim8-14 MHV(H) FAX

FAX               5

EXEC [  1-  8]  

  5

Sim8-14 MHV(H) FAX

FAX               5

EXEC

 [  1-  8]  

  5