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93

Pressing the dial keys will select a character as shown below.

94

The codes listed below can be used to perform simple checks of some of the unit’s functions. When complaints are received
from customers, they provide an effective tool for identifying the locations and causes of malfunctions.

Test Mode

Type of Mode

Code

Function

Operation after code 

input

MEMORY CLEAR

Service Mode

“5” “5” “0”

Clear the memory where the users can store data.

SET

MOTOR TEST &
High Voltage Power
Supply Board
CHECK

Service Mode

“5” “5” “6”

0:printer motor feed  4:auto document feed  6:carriage  
Refer to HIGH VOLTAGE VALUE CHECK POINT (P.177).

SET

MODEM TEST

Service Mode

“5” “5” “4”

Telephone line circuit is connected automatically, output the following signals on
the circuit line. 
1) OFF     2) V21 ter 300bps   3) V27 ter 2400bps   4) V27 ter 4800bps   
5) V29 7200   6)V29 9600bps   7) V17 7200bps   8) V17 9600bps     
9) V17 12000bps    10) V17 14400bps   11) V34 2400bps   12) V34 4800bps   
13)V34 7200bps   14)V24 9600bps   15) V34 12000bps   16) V34 14400bps
17)V34 16800bps   18)V34 19200bps   19) V34 21600bps   20) V34 24000bps
21)V34 26400bps   22)V34 28800bps   23) V34 31200bps   24) V34 33600bps
25)1100Hz   22)2100Hz

SET

ROM CHECK

Service Mode

“5” “5” “1”

Indicates the version and checks the sum of the ROM. 

SET

LCD TEST

Service Mode

“5” “5” “8”

Checks the LCD indication. 
Illuminates all the dots to check if they are normal.

SET

DTMF SINGLE 
TONE TEST

Service Mode

“5” “5” “2”

Outputs the DTMF as single tones. Used to check the frequencies of the individ-
ual DTMF tones. Refer to DTMF SINGLE TONE TRANSMIT SELECTION (P.96).

1....ON

2....OFF

LED TEST

Service Mode

“5” “5” “7”

All LEDs above the operation panel board flash on and off, or are illuminated. 

KEY TEST

Service Mode

“5” “6” “1”

Checks the button operation.
Indicates the button code on the LCD while the button is pressed. Refer to BUT-
TON CODE TABLE (P.96).

START (any key)

SCANNER TEST

Service Mode

“5” “5” “5”

LED lights up, Scanner scanning.
1:RED Check (You can select LED color by Service Mode #793 / 2:monochrome
/ 3:color

LSU TEST

Service Mode

“6” “3” “9”

Laser radiates, Polygon rotates

FAN TEST

Service Mode

“6” “7” “7”

1:TEST OFF
2:High-speed rotation (Right FAN)
3:Low-speed rotation (Right FAN)
4:High-speed rotation (LEFT FAN )
5:Low-speed rotation (LEFT FAN)

MEMORY CLEAR
(except History data)

Service Mode

“7” “1” “0”

Refer to Memory Clear Specification (P.101).

SET

95

The numbers in the boxes (XXX) indicate the keys to be input for the various test modes.

SENSOR CHECK 

Service Mode

“8” “1” “5”

First of all, press the copy button, and confirm the action of ON/OFF. 
For each sensor’s operation, refer to SENSORS AND SWITCHES SECTION
(P.52).
LCD DISPLAY:

D: Document set
 -: No document

S: Docu detect
 -: No document

C: Cover open
 -: Cover close

P: Paper set
 -: No paper

R: Paper detect
 -: No paper

E: Paper detect
 -: No paper

D: DRUM set
 -: No DRUM

T: Toner detect
 -: No toner 

3F: 00 (high temp.) - FF (low temp.)

DF: 00 (high temp.) - FF (low temp.)

V: VOX detect 
 -: No VOX

U: Paper detect
 -: No paper

T: Paper detect
 -: No paper

F: Cover open
 -: Cover close

A: Cover open
 -: Cover close

H: CIS at Home position
 -: CIS not at Home position

PRINT TEST PAT-
TERN

Service Mode

“8” “5” “2”

1. Press “852” then the SET key in the service mode.
2. As “PATNO =” is displayed on the LCD, enter the test pattern No. and press the
SET key.
3. When “No. = “is displayed on the LCD, enter the printing number and press the
SET key. (Press “00” for the infinite printing.)
4. “MODE” is displayed on the LCD. Press “0” to start printing or press “1” to go to
the next screen. 
5. When “1” is pressed at MODE, “INTVL = “is displayed on the LCD. Enter the
printing interval (00~99 sec).
6. The printing repeats the designated number of times at the programmed print-
ing intervals.

Test Mode

Type of Mode

Code

Function

Operation after code 

input

96

After performing this check, do not forget to turn the setting off.
otherwise, dialing in DTMF signal will not work.