KV-S5055C (serv.man2) - Panasonic Other Service Manuals Service Manual (repair manual). Page 115

115

F35 (Image process-
ing FPGA/DDR2 error)

99

xx

00

00 Access error to DDR2(IC0033 or 

IC0034)

1. Check the soldering condition of the parts 
    surrounding FPGA (IC0030 and IC0031).
2. Check the soldering condition of the DDR2 
    (IC0033 and IC0034).
3. Replace faulty parts or CONTROL Board.

F36 (Front ASIC error) 9A

xx

00

00 Access error to SDRAM (IC0040 

and IC0041)

1. Check the soldering condition of the parts 
    surrounding the ASIC (IC0035).
2. Check the soldering condition of the SDRAM 
    (IC0040 and IC0041).
3. Replace faulty parts or CONTROL Board.

F38 (Back Gate Array 
error)

9C

xx

00

00 Access error to SDRAM (IC0042 

and IC0043)

1. Check the soldering condition of the parts 
    surrounding the Gate Array (IC0038).
2. Check the soldering condition of the 
    SDRAM(IC0042 to IC0043).
3. Replace faulty parts or CONTROL Board.

F42 (DFP Home 
Position error) 

32

00

00

00 1. DFP Pressure Motor does not 

work, properly.

Refer to the 7th item on Classified Code U12.

2. DFP Pressure Motor control
circuit does not work, properly.

Refer to the 8th item on Classified Code U12.

3. Rotation from DFP Pressure 
Motor is not normally transferred to 
the DFP Adjustable Drive Shaft 
that controls DFP Roller's position. 

1. Check the ADF mechanism. (See Sec.6.)
2. Execute DFP Pressure Drive in Sec. 9.3.6 
    to check the ADF mechanism. 

4. DFP Home Detector does not 
work, correctly. 

1. Execute Key/Sensor test in the Sec. 9.3.6
    to check the detector condition.
2. Check whether the tip of the DFP Adjustable 
    Drive Shaft interrupts the detector.
3. Check the following connection and 
    soldering condition on each connector.

a. CN3002(DFP HOME SENSOR Board) to     

    CN2003 (USR RELAY Board)

b. CN2001 (USR RELAY Board) to CN1007 

       (CONTROL Board)

4. Check "DFP_HOME" signal.: 5 V (when the
     tip of the DFP Adjustable Drive Shaft
     interrupts IC3001 (DFP Home Sensor) on
     the DFP HOME SENSOR Board.)
         

→ CN1007-2nd pin and IC0017-5th pin

5. Check the soldering condition of IC0017 on 
    the CONTROL Board and repair it.
6. Replace faulty parts or boards.

F60 (Front-side gain
adjustment error)

50

00

00

00 1. Scanning Glass (F) is dirty.

Clean the glass surface. (See 7.2.)

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

1. Execute CCD Level test in Sec.9.3.6 to
    check the peak level.
2. Check that LED (F) lights during CCD Level
    test.
3. Check the following connections and
    soldering condition on each connector.
     a. LED (F) Board to CN4007 (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

      

→ CN4002-27th pin: 0 V (when lamp is ON)

5. Replace faulty parts or boards.