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17

4. Background Plate (B) switching

is not working properly.

1. Execute "Focus" Test in Sec.10.3.7 to check

the peak level when Background Color is
White and Black.

2. Check the Background color in Image

Capture Plus

(Refer to "11 Troubleshooting Appendix 2" )

F63 (Back-side
black level error)

53

00

00

00 1. Pixel data from CIS (B) or image

processing circuits have some
problems.

Refer 3rd item of Error Code F62.

F71 (Model ID Error)

9F

00

00

00 Model ID of Control Board does not 

match the ID of Drive Board, Lower 
Relay Board, Upper Relay board or 
Panel Board.

1. Check the model name of the replaced board 

from the part number.

2. Check the following connection and solder-

ing condition on each connector.
a. CN14 (Control Board) to CN2009 (Drive

Board)

b. CN19 (Control Board) to CN3004 (Upper

Relay Board)

c.CN18 (Control Board) to CN3304 (Upper

Relay Board)

F80 (Double Feed
Detector
adjustment error)

60

00

00

x

1. Double Feed Detector (G) does

not work correctly.

Refer to 5th item of Error U23.

Three sensor model(S8127/S8120)
    ST4  0 : center,  1 : left, 2 : right

Five sensor model(S8147/S8150/S8130)
    ST4  0 : center, 1 : R1, 2 : L1, 3 : R2, 4 : L2

2. Double Feed Detector (R) does

not work correctly.

Refer to 6th item of Error U23.

Three sensor model(S8127/S8120)
    ST4  0 : center,  1 : left, 2 : right

Five sensor model(S8147/S8150/S8130)
    ST4  0 : center, 1 : R1, 2 : L1, 3 : R2, 4 : L2

F90 
(Sub-Processor Error)

9E

x

x

x

Sub-processor error of ASIC 
(IC1/IC2)

1. Check the soldering condition of CONTROL

Board and its surrounding parts.
    ASIC(ST3  0 : IC1, 1 : IC2)

2. Replace faulty parts or board.

Figure 1

Figure 2

18

Check the Background color switching in Image Capture Plus

1. Click “Scan Setting” on the Main window.
2. Click “Default” on the "Setting" window.
3. Change the Basic Settings in "Basic" tab below.

Paper Source: ADF Duplex
Image Type: 24 bit Color
Resolution: 300
Automatic Crop: OFF
Deskew: OFF

4. Set the "Scan Settings" in "Common" tab below.

Background Color: Black or White

5. Click “OK” on the "Setting" window.
6. Click Scan button on the main window.
7. Put the half of letter size document on the feed tray.
8. Click "Start" on the "New Document" window.
9. Check that scaned image for background plate matches the Background Color setting.

If it does not match, check the components parts for background plate switching.

10. Repeat step 4 to 8 above and scan each 20 times with black and white

.

1 

3 

2 

ADF Duplex 

24 bit Color 

OFF 
OFF 

300 

"Basic" tab 

4 

"Common" tab 

5 

19

6 

8 

9 

Background Color setting : Black  

Background Color setting : White 

Background Plate(B) switching is not working properly. 

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