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105

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

Service Mode

“5” “5” “6”

00:printer motor feed  10:auto document feed (single side)  20:carriage 30:auto
document feed (double side)

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)1100Hz   3)2100Hz  4) V21 ter 300bps   5) V27 ter 2400bps   6) V27
ter 4800bps    
7) V29 7200   8)V29 9600bps   9) V17 7200bps   10) V17 9600bps     
11) V17 12000bps    12) V17 14400bps   13) V34 2400bps   14) V34 4800bps    
15)V34 7200bps   16)V34 9600bps   17) V34 12000bps   18) V34 14400bps
19)V34 16800bps   20)V34 19200bps   21) V34 21600bps   22) V34 24000bps
23)V34 26400bps   24)V34 28800bps   25) V34 31200bps   26) V34 33600bps

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.107).

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.107).

SCANNER TEST

Service Mode

“5” “5” “5”

LED lights up, Scanner scanning.
1:RED / 2:GREEN / 3:BLUE

SET

LSU TEST

Service Mode

“6” “3” “9”

Laser radiates, Polygon rotates

SET

FAN TEST

Service Mode

“6” “7” “7”

01: Normal operation 02: Fuser Fan ON (High speed)
03: Fuser Fan ON (Low speed) 04: PSU Fan ON (High speed)
05: PSU Fan ON (Low speed) 06: Both Fan OFF

SET

MEMORY CLEAR
(except History data)

Service Mode

“7” “1” “0”

Refer to Memory Clear Specification (P.112).

SET

106

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.55).
LCD DISPLAY:

D: Document set
 -: No document

S: Docu detect
 -: No document

C: Cover open
 -: Cover close

P: Recording paper set
 -: No recording 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.)

C: Tray open
 -: Tray close

T: Paper detect
 -: No paper

H: Carriage detect
 -: No carriage

D: Document detect
 -: No document

A: Paper detect
 -: No paper

N: New
 -: Secondhand

C: Contact
  -: Noncontact

L: Cover open
 -: Cover close

C: Tray open 
  -: Tray close

P: Recording paper set 
 -: No recording paper

U: Paper detect 
  -: No paper

PRINT TEST PAT-
TERN

Service Mode

“8” “5” “2”

1. As “PATNO. =” is displayed on the LCD, enter the test pattern No. and press
the SET key.
2. When “NO. = “is displayed on the LCD, enter the printing number and press the
SET key. (Press “00” for the infinite printing.)
3. “MODE =” is displayed on the LCD. Press “0” to start printing or press “1” to go
to the next screen. 
4. When “1” is pressed at MODE, “INTVL = “is displayed on the LCD. Enter the
printing interval (000~999 sec).
5. 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

107

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

108

1. NO.01

2. NO.06

3. NO.03

• These print test patterns are just image printing, and differ-

ent from actual ones.

• When it is required to judge the print quality, compare with

the printing of a nondefective machine.