KV-S5055C (serv.man2) - Panasonic Other Service Manuals Service Manual (repair manual). Page 116

116

3. Pixel data from Optical Unit
    Front or image processing
    circuit has some problems.

1. Check the following connections and
    soldering condition on each connector.
      a. CN5002 (CCD (F) Board) to CN1003
          (CONTROL Board)
      b. CN5003 (CCD (F) Board) to CN1004
          (CONTROL Board)
2. Check the following power supply to
    CONTROL Board.
    

→ CN1004-1st pin (CONTROL Board): 12 V

    

→ CN1004-3rd pin (CONTROL Board): 5 V

    

→ CN1004-5th pin (CONTROL Board): 3.3 V

3. Check that the following signals on the
    CONTROL Board are normal.
    

→ Test point (R0040): 30 MHz

4. Check the soldering condition of the all ICs
   and their surrounding parts on the CCD (F)
   Board.
5. Check the soldering condition of the
    CN1004, IC0001, and their surrounding
    circuit on the CONTROL Board.
6. Replace faulty parts or boards.

F61 (Front-side
black level error)

51

00

00

00 1. Pixel data from Optical Unit

    Front or image processing
    circuit has some problems.

Refer to the above 3rd item on the F60.

F62 (Back-side gain
adjustment error)

52

00

00

00 1. Scanning Glass (B) is dirty.

Clean the glass surface. (See 7.2.)

2. Light Unit (B) does not work
    properly.

1. Execute CCD Level test in Sec.9.3.6 to
    check the peak level.
2. Check that LED (B) lights during CCD Level
    test.
3. Check the following connections and
    soldering condition on each connector.
     a. LED (B) Board to CN4008 (DRIVE Board)
     b. CN4002 (DRIVE Board) to CN1002
         (CONTROL Board)
4. Check the lamp control signals to the Lamp
    Driver.
      

→ IC4009-1st pin: 10 V

      

→ CN4002-28th pin: 0 V (when lamp is ON)

5. Replace faulty parts or boards.

3. Pixel data from Optical Unit Back 
   or image processing circuit
   has some problems.

1. Check the following connections and
    soldering condition on each connector.
     a. CN5002 (CCD (B) Board) to CN1005
         (CONTROL Board)
     b. CN5003(CCD (B) Board) to CN1006
         (CONTROL Board)
2. Check the following power supply to
    CONTROL Board.
    

→ CN1006-1st pin (CONTROL Board): 12 V

    

→ CN1006-3rd pin (CONTROL Board): 5 V

    

→ CN1006-5th pin (CONTROL Board): 3.3 V

3. Check that the following signals on the
    CONTROL Board are normal.
    

→ Test point (R0081): 30 MHz

4. Check the soldering condition of the all ICs
    and their surrounding parts on the CCD (B)
    Board.
5. Check the soldering condition of the
    CN1006, IC0002, and their surrounding
    circuit on the CONTROL Board.
6. Replace faulty parts or boards