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AR-FX4 INSTALLATION PROCEDURE - 2

6) Attach the fax PWB.

Mount the two spacers on the fax PWB.

Next, insert the fax PWB connector into the connector on the
expansion PWB, install with 4 M3 screws with washer.

7) Attach the TEL/LIU PWB.

Insert the TEL/LIU PWB connector into the fax PWB connector,
attach 2 spacers on the TEL/LIU PWB, and attach the TEL/LIU
PWB with 2 M3 screws  with washer.

8) Reattach the left rear cabinet.

1. Pass the speaker harness through the hole of the frame of the

fax expansion PWB and connect it to the connector of the fax
PWB.

2. Fit the pawls of the left rear cabinet to the mounting portions of

the main unit. Slide the cabinet toward the front of the main unit
to attach it.

3. Fix the left rear cabinet with 2 screws.

4. Attach the supplied fax connector cover.

9) Reattach the shielding plate.

Fit the pawls of the shielding plate to the main unit and secure the
plate using five screws.

10) Date/time setting

Press [SPECIAL FUNCTION] key on the operation panel, select
[KEY OPERATOR PROGRAM]. Input 5-digit Key Operator Code
with 10-key, and select [FAX] in Mode Select.

Select [DEFAULT SETTING], [DATE/TIME SETTING], and input
month/day/year in this order, and press [OK] to set.

Input hour/minute in this order, and press [OK] to set.

• When mounting memory, turn off the main unit.

1) Remove the fax connector cover using a flatblade screwdriver or

the like.

2) Insert the memory card securely so that the model name is on the

rear side.

3) Reattach the fax connector cover.

• Turn on the main unit.

(When turning on the main unit just after expansion, the system
check time will become longer due to memory initialization.)

4) Make certain that the memory was expanded by displaying SW list

with SIM 66-21.

Spacers

Fax PWB

M3 screws with
washer

M3 screws with
washer

M3 screws with washer

TEL/LIU PWB

Spacers

1

2

3

4

3

Screw

Screw

Speaker harness

Left rear cabinet

Pawls

Fax connector cover

Screws

Shielding plate

Fax connector cover

Memory card

1)

1)

2)

3)

3)

AR-FX4 ADJUSTMENTS - 1

1) Set the test chart (TPAP-2109SCZZ <CCITT #3 chart>) on the OC

table as shown below, and close the OC cover.

2) Switch to the FAX mode and execute SIM 46-12.

3) After warming up, shading is performed and the current density

level is displayed on the lower two digits of the display section in
standard and auto density mode.

4) Enter the set value with the 10-key to adjust the FAX image den-

sity.

5) Make a copy, and adjust so that the following adjustment specifica-

tion is satisfied.

∗

When an adjustment is made in this mode, the exposure level for
each communication mode and each density mode are automatically
adjusted accordingly.

<Adjustment specifications>

1) Set the test chart (TPAP-2109SCZZ <CCITT #3 chart>) on the OC

table as shown below, and close the OC cover.

2) Switch to the FAX mode and execute SIM 46-13 to 46-16 depend-

ing on the adjustment mode.

3) After warming up, shading is performed and the current density

level is displayed on the lower two digits of the display section.

4) Enter the set value with the 10-key to adjust the FAX image den-

sity.

5) Make a copy, and adjust the density with the copy as a reference.

<Adjustment specifications>

Section

Adjustment items

Adjustment procedures

1

Density section

A

FAX mode density adjustment (Overall mode)

<FAX mode> SIM 46-12

B

FAX mode density adjustment (Individual mode)

<FAX mode> SIM 46-13 – 46-16

2

Communication section

A

Dial test

<FAX mode> SIM 66-13

Density 

mode

Resolution 

mode

SIM

CCITT #3 

chart output 

result

Set value

Set 

range

Auto

Standard

FAX 
mode 
46-12

“3” is slightly 
copied.

The greater the 
set value is, the 
greater the density 
is, and vice versa.

0 – 99

Glass holding plate

Resolution 

mode

Density 

changeover

SIM

Set value

Set 

range

Standard

Switched with the 
density select 
key.

FAX 
mode 46-
13

The greater the 
set value is, the 
greater the density 
is, and vice versa.

0 – 99

Fine

Switched with the 
density select 
key.

FAX 
mode 46-
14

Super fine Switched with the 

density select 
key.

FAX 
mode 46-
15

Ultra fine

Switched with the 
density select 
key.

FAX 
mode 46-
16

Glass holding plate

AR-FX4 ADJUSTMENTS - 2

Note: These items are factory adjusted when shipping according to

FCC standards. Therefore, do not change the setting in the mar-
ket.

1) Execute SIM 66-13 in FAX mode.

2) Execute the dial pulse mode according to the instructions on the

LCD display.

3) Select the dial pulse.

4) Set the make time.

5) Select the dial to be transmitted.

Default: 0123456789

∗

#

(After deleting with the clear key, it can be set to any desired
value.)

6) Transmission is started from the line.

1) Execute SIM 66-13 in the FAX mode.

2) Execute the DTMF mode according to the instructions on the LCD

display.

3) Select the signal transmission level.

The signal transmission level is classified into two groups: the high
group, and the low group.

Transmission can be made with either of default and the soft SW
set value.

4) The transmission level can be set when the following menu is dis-

played on the LCD. (et value 1 = 0.5dB change)

(This value is returned to the original value when the simulation
mode is canceled.)

5) Select the dial signal to be transmitted.

Default: 0123456789

∗

#

(After deleting with the clear key, it can be set to any desired
value.)

6) Start transmission from the line.

SELECT SIGNAL

1:PULSE 2:DTMF

SELECT PULSE

1:10PPS 2:20PPS

INPUT MAKE TIME

(0-15)            _

SEND yyPPS xxm s

1:YES 2:NO

SENDING yyPPS xxm s

SIM

Soft 

SW

Initial 
value

Set value

Dial 
pulse 
make 
time

10 
PPS

FAX 
mode 
66-13

SW 67-
1 – 4

40ms 
(14)

SW set value: 0 – 15
Make time: 26 – 41ms

1ms step 
(Binary 
input)

20 
PPS

SW 67-
5 – 8

0ms

0 fixed

SELECT SIGNAL

1:PULSE 2:DTMF

SELECT HIGH LEVEL

1:DEFAULT 2:SOFT SW.

SELECT LOW LEVEL

1:DEFAULT 2:SOFT SW.

INPUT VALUE

(0-15)            _

H:xx   L:yy

1:YES 2:NO

xx: High group soft SW set value
yy: Low group soft SW set value

SENDING DTMF

SIM

Soft 

SW

Initial 
value

Set value

DTMF 
trans-
mission 
level

High 
group

(FAX 
mode) 66-
13
(Test only)

SW 53-
1 – 4

3.5dB 
(7)

SW set value: 
0 – 15 
Transmission 
level: 0 – 7.5dB

0.5ms 
step 
(Binary 
input)

Low 
group

SW 53-
5 – 8

3.5dB 
(7)

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