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117

U20 (Skew Error)

19 00 00 00 1. Document on the Hopper

   Tray is not set correctly.

Set the document on the Hopper Tray,
sliding the Document Guides so that they
match the document width and execute
scanning again.

2. ADF Door is not closed
    firmly.

Close the door firmly. 

3. A roller (Paper Feed,
   Separation, DFP, Drive, Exit,
   or Free) is dirty.

1. Clean the roller.
2. Clear the counter for cleaning roller to
    zero with the Service Utility described in
    Sec. 9.

4. A roller (Paper Feed,
   Separation, DFP, Drive, or
   Exit) is swollen irregularly.

1. Replace the roller. 
2. After replacing Paper Feed, Separation,
   and DFP Rollers, clear the counter for
   replacing roller to zero with the Service
   Utility described in Sec. 9.

5. Paper dust exists on or
   around a Skew Sensor.

Clean the sensor surface.

6. The Skew (L) Sensor does
    not work properly.

1. Execute “Key / Sensor” test in the
    Sec. 9.3.6 to check the sensor
    condition. 
2. Check the sensor alignment is proper.
   (whether the sensor direction faces
   its reflector.) 
3. Check the following connections and
    soldering condition on each connector: 
      a. CN13 (STARTING SENSOR
          Board) to CN12 (SENSOR RELAY
          Board) 
      b. CN29 (SENSOR RELAY Board) to
          CN2006 (CENTER Board) 
4. Check the following signal: 
      a. SKEW_L signal (CN2006-12th pin)
        

→3.3 V (when no document exists on

           the SKEW_L Sensor) 
      b. Check the reference signal for the
          SKEW_L signal on the CENTER
          Board.
      

→ IC2027-4th pin: 3.3 V (when no

          document exists)
5. Replace faulty parts or boards. 

7. The Skew (R) Sensor does
    not work properly

1. Execute “Key / Sensor” test in the
   Sec. 9.3.6 to check the sensor
   condition.
2. Check the sensor alignment is proper.
   (whether the sensor direction faces its
   reflector) 
3. Check the following connections and
    soldering condition on each connector: 
       a. CN13(STARTING SENSOR Board)
           to CN12(SENSOR RELAY Board) 
       b. CN29 (SENSOR RELAY Board)
           to CN2006(CENTER Board 
4. Check the following signals:

   

a. SKEW_R signal (CN2006-13th pin)

    

→ 3.3 V (when no document exists on

        the SKEW_R Sensor) 
  b. Check the reference signal for
      the SKEW_R signal on the CENTER
      Board. 
    

→ IC2027-3rd pin: 3.3 V (when no

        document exists)
5. Replace faulty parts or boards. 

118

U23 (Double-feed
error)

1C 00

xx

xx 1. Document quality is out of

    spec. on this scanner.

1. Set the correct documents on the
    Hopper according to this scanner
    specification.
    Note:

2. ADF is in MANUAL position. 1. Set the Manual Feed Selector to

    "AUTO".
2. Execute scanning, again.

3. Rollers (Paper Feed,
    Separation, DFP) are not
    assembled properly.

1. Reassemble the rollers.

4. Rollers (Paper Feed,
    Separation, DFP) are dirty.

1. Clean the rollers.
2. Clear counter for cleaning roller to zero
    with the above service utility. 

5. Rollers have reached their
    life expectancy.

1. Replace the Paper Feed, Separation,
   and DFP Rollers after checking each
   roller configuration and Scanner
   Counter of Service Utility software.
2. Clear counter for replacing roller to zero
    with the above service utility.

6. Double Feed Detector does
    not work properly.

1. Execute “Double Feed” test in Sec.
    9.3.7. to adjust Send Level for Double
    Feed Detector.
2. Execute “Double Feed” test in Sec.
    9.3.6. to check the detector condition.
3. Check whether the Double Feed
    Detector is aligned property.
4. Check the following connections and
    soldering condition on each connector:

         

a. Double Feed Detector (G) to

            CN28 (SENSOR RELAY Board)
        b. CN29 (SENSOR RELAY Board)
            to CN2006 (CENTER Board)
        c. Double Feed Detector (R) to
           CN31(OUTER CONVEYOR Board)
        d. CN32(OUTER CONVEYOR
           Board) to CN2007 (CENTER
           Board)
5. Replace faulty parts or boards.

119

U30 (Cover open.)

20 00 00 00 1. ADF or EXIT Door is not

    closed enough.

Shut the door properly.

2. Door SW (Micro switch: Exit
    Door or ADF Door Switch)
    does not work correctly.

1. Execute “Key / Sensor” in Sec. 9.3.6
   to check the door switch (Exit, ADF)
   ON/OFF condition.
2. Check the condition between the Door
    Switch and CN3027 on POWER
     RELAY Board.
3. Check the Door Switch mechanical
    condition.
4. Replace a faulty cable.
5. Replace the Door Switch.

3. Monitor circuit to check the
    door ON / OFF condition is
    broken.

1. Execute “Key / Sensor” in Sec. 9.3.6
    to check the door switch ON/OFF
    condition.
2. Check 24VSLP signal. (CN3022-1st
    pin on POWER RELAY Board): +24 V
    (when door is closed)
3. Check DOOR signal (CN4005-31st)
      +5 V (when the door is open)
       0 V (when the door is closed)
4. Replace a faulty cable.
5. Replace POWER RELAY Board
6. Replace DRIVE Board or CONTROL
    Board.

F17 (SD-RAM error) 87

xx

xx

00 Access error to SDRAM

(IC1015 to IC1020) on the
CONTROL Board

1. Check the soldering condition of the
    SDRAM (IC1015 to IC1020).
2. Replace faulty parts or CONTROL
    Board.

F18 (Extension SD-
RAM error)

88

xx

00 00 Access error to an additional

SDRAM attached to CN1005
and CN1006

1. Check whether the additional SDRAM
    is attached to CN1005 and CN1006
    properly. Or reattached it.
2. Check the SDRAM specifications.
3. Check the soldering condition of the
    CN1005 and CN1006 (for the SDRAM)
    and its surrounding circuits on the
    CONTROL Board to repair it.
4. Replace faulty parts or CONTROL
     Board.

F31 (Analog IC
error)

95 00 00 00 Access error to Analogue IC

1. Check the following connections and
    soldering condition to repair it:
   

→ IC2009 to IC2016 (CENTER Board)

       and their surround circuits
2. Replace faulty parts or boards.

F33 (USB IC error)

97 00 00 00 Access error to USB Controller 1. Check the soldering condition of the

    USB Controller (IC1021) and its
    surrounding circuits on the CONTROL
    Board to repair it.
2. Replace faulty parts or CONTROL
    Board.

F34 (EEPROM
error)

98 00 00 00 Access error to EEPROM

1. Check the soldering condition of the
    EEPROM (IC1003) and its surrounding
    circuits on the CONTROL Board.
2. Replace faulty parts or CONTROL
    Board.

F36 (ASIC (Front)
SDRAM Error)

9A xx

00 00 Access error to SDRAM

(IC1015 to IC1018)

1. Check the soldering condition of the
    parts surrounding the Gate Array
    (IC1011).
2. Replace faulty parts or CONTROL
    Board.

120

F38 (ASIC (Back)
SDRAM Error)

9C xx

00 00 Access error to SDRAM

(IC1019, IC1020)

1. Check the soldering condition of the
    parts surrounding the Gate Array
    (IC1013).
2. Replace faulty parts or CONTROL
    Board.

F40 (Hopper error)

30 00 00 00 1. Paper Feed Motor does not

    work properly.

1. Check the motor mechanism condition,
    by carrying out ”Hopper Drive” test in
    Sec. 9.3.6.
2. Check the following connection:
      

→ Paper Feed Motor to CN3026

            (POWER RELAY Board)
3. Replace faulty cables.
4. Replace Paper Feed Motor.

2. Feed Motor control circuit
    does not work properly.

1. Check the following connections and
    soldering condition on each connector:

       

a. CN2004 (CENTER Board) to

          CN4005 (DRIVE Board)
      b. CN4009 (DRIVE Board) to
          CN3021 (POWER RELAY Board)
2. Check the soldering condition of
    IC4007 and its surrounding parts.
3. Check the following signals on the
    DRIVE Board:

     

 a. IC4007-1,3,4 and 5th pins

         (phase signals): See Fig. 10.2.1.
      b. IC4007-19th pin (VREF): 2.5 V
          or less.
4. Replace faulty parts or boards.

3. Hopper mechanical problem
   (Rotation from the Paper
    Feed Motor Gear is not
    transmitted to the Hopper
    properly.)

1. Check the Hopper mechanism
  condition by carrying out "Hopper
  Drive" test. (See 9.3.6.)
    Note: 

2. Reassemble improper lay-out or
    replace faulty parts.

4. Hopper Home Detector does
    not work properly.

1. Execute “Key / Sensor” test in the
    Sec. 9.3.6 to check the detector
    condition.
2. Check whether the Interrupter plate
    interrupts the detector correctly.
3. Check the following connection and
    soldering condition on each connector:
   

→ CN23 (HOPPER HOME DETECTOR

       Board) to CN26(SESOR RELAY
       Board)
4. Check HOPPER_HOME signal:
    

→ CN23-3rd pin (5 V when Interrupter

        plate interrupts IC3005 on the
        HOPPER HOME Board.
5. Check the soldering condition of
    IC2007 on the CENTER Board and
    repair it.
6. Replace faulty parts and boards.