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105

No.

Symptom

Cause

Countermeasure

1

NO DOCUMENT FEED
(NO DOCUMENT
FEED,DOCUMENT JAM
and MULTIPLE DOCU-
MENT FEED.) (P.125)

Failed the document sensor lever

Replace the document sensor lever

Failed the document sensor

Go to DOCUMENT SENSOR (P.42)

Dirty or failed the separation roller

Clean or replace the separation roller

Dirty or failed the separation rubber

Clean or replace the separation rubber

Failed the separation spring

Replace the separation spring

DOCUMENT JAM (NO
DOCUMENT FEED,DOCU-
MENT JAM and MULTIPLE
DOCUMENT FEED.)
(P.125)

Dust or scratch on the document paper path

Clean the document paper path

Failed the gear 

Check the gear

Failed the ADF motor

Go to SCAN MOTOR (P.158)

Failed the ADF cover open switch lever

Replace the ADF cover open switch lever

MULTIPLE DOCUMENT
FEED(NO DOCUMENT
FEED,DOCUMENT JAM
and MULTIPLE DOCU-
MENT FEED.) (P.125)

Dirty or failed the separation roller

Clean or replace the separation roller

Dirty or failed the separation rubber

Clean or replace the separation rubber

Failed the separation spring

Replace the separation spring

2

SKEW (ADF) (P.127)

Dust or scratch on the document paper path

Clean the document paper path

Failed the document feed roller

Replace the document feed roller

Failed the document guide

Replace the document guide

3

THE SENT FAX DATA IS
SKEWED (P.128)

The cause of ADF

Go to SKEW (ADF)(P.127)

The cause of scanner glass

----

Problem with the other FAX machine

4

THE RECEIVED FAX
DATA IS SKEWED (P.128)

The cause of printing

Go to SKEW (ADF)(P.127)

Problem with the other FAX machine

5

THE RECEIVED OR COP-
IED DATA IS EXPANDED
(P.129)

Dirty or failed the drive roller (at ADF)

Clean or replace the drive roller

Dirty or failed the document feed roller (at ADF) Clean or replace the document feed roller
Dirty or failed the separation roller (at ADF)

Clean or replace the separation roller

6

BLACK OR WHITE VERTI-
CAL LINE IS COPIED
(P.130)

Dirty or failed the white plate (2 places)

Clean or replace the white plate

Dirty or failed the glass board

Clean or replace the glass board

The cause of printing

Go to DARK OR WHITE VERTICAL LINE (P.112)

Failed CIS

Go to CIS (Contact Image Sensor) SECTION (P.160)

7

AN ABNORMAL IMAGE IS
COPIED (P.131)

Dirty or failed the white plate (2 places)

Clean or replace the white plate

Dirty or failed the glass board

Clean or replace the glass board

Dirty or failed the drive roller (at ADF)

Clean or replace the drive roller

Dirty or failed the document feed roller (at ADF) Clean or replace the document feed roller
Dirty or failed the separation roller (at ADF)

Clean or replace the separation roller

Failed CIS

Go to CIS (Contact Image Sensor) SECTION (P.160)

The cause of printing

Go to DARK OR WHITE VERTICAL LINE (P.112)

No.

Symptom

Cause

Countermeasure

1

Cannot print legal size

Not selected the legal mode

Select the legal mode in the user programming mode

2

'CHECK DRUM' on the LCD The drum unit can not be detected.

• Drum Sensor trouble
• Mechanical shutter trouble

Go to DRUM SENSOR (P.39)
Go to LSU (Laser Scanning Unit) SECTION (P.37)

3

'CHANGE DRUM' on the
LCD

The toner sensor cannot detect the toner sen-
sor signal.

Go to TONER SENSOR.... “TONER EMPTY”, “TONER
LOW”, “CHANGE DRUM” (P.43)

4

'OUT OF PAPER' on the
LCD

Failed the paper sensor lever

Replace the paper sensor lever

Failed the paper sensor

Go to PAPER SENSOR (P.41)

5

'COVER OPEN' on the LCD Failed the top cover open switch lever

Replace the top cover open switch lever

Failed the top cover open switch

Go to TOP COVER SENSOR (P.42)

6

CALL SERVICE 1' on the
LCD

The polygon motor of LSU is unusually

Check the connector and LSU and the main board

7

CALL SERVICE 2' on the
LCD

The laser of LSU is unusually

Check the connector and LSU and the main board

8

CALL SERVICE 3' on the
LCD

The fuser temperature is unusually

Check the connector and the fuser and the thermistor and the
main board

9

CALL SERVICE 4' on the
LCD

The fan motor is unusually

Check the connector and the fan motor and the main board

106

Call Service 1 ----- Polygon doesn’t rotate......... Refer to LSU (Laser Scanning Unit) SECTION (P.37).

• First, listen to the sound. If rotation sound isn't heard, check 24V line, POLON signal and POLCLK signal. If even a little of sound

is heard, check XREADY signal.

Call Service 2 ----- Laser isn't output.......... Refer to LSU (Laser Scanning Unit) SECTION (P.37)

• This can be judged only by referring to signal. Check 5V line, XHSYNC, SPC, VIDEO, LDEN.

Call Service 3 ----- Detection of fixing temperature.......... Refer to HEAT LAMP CONTROL CIRCUIT (P.52)

• *Service mode *655 tells the detection number and 3 latest temperatures of the thermistor. The detection point of the Call Ser-

vice 3 and the thermistor temperature is displayed. Maximum 3 latest temperatures are displayed showing the newest on the left.
[AABB CCDD EEFF] AA, CC and EE show the cause distinction code and BB, DD and FF show their temperature.

01: means that it did not reach 56

°C within 22 seconds since the heater was turned ON.

03: means that it did not reach the secondary stabilizing temperature (160

°C) within 35 seconds from 56°C.

04: means that it became T2-40deg (120

°C or below) after T2; the secondary stabilizing temperature (160°C). (The heater has

burnt out.)
05: means that it became over 220

°C.

06: means that during printing the SHORT of the thermistor (AD: 01h or below) was detected.
07: means that the thermistor's SHORT (AD:00h) and OPEN (AD: F9h or over) were detected.

Call Service 4 ----- Rotation of Fan.......... Refer to FAN MOTOR SECTION (P.35)

• Connector isn’t inserted firmly, dust is caught in and the fan is broken.

* As for Call Services 1, 2 and 4, turn the power OFF then ON to restart.

Once “CALL SERVICE3” is displayed, the unit does not disappear until the Factory Setup or Service Function #529 is executed.
Therefore Service Function #529 should be executed before the confirmation, and #529 should be done after the countermeasure.

107

"CALL SERVICE 1" means that the polygon motor inside the LSU does not rotate.
The rotation of the polygon motor is detected by IC300-F23pin (NREADY).

108

"CALL SERVICE 2" means that the synchronous signal out of the LSU cannot be detected.
The synchronous signal out of the LSU is detected by IC 300-23pin. (NHSYNC)

As for the "Pulse" waveform of the above flow chart, see the timing chart.