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9-12

USB (Front) Device Flow

USB device is not recognized

Insert the USB device again.
Is it recognized when the power is
turned OFF and then ON again?

No

Is 5V present at CN702

(FR-317)

board

) pin10,11?

No

Is 5V present at

CN1305

(MB board) Pin 10 or pin 11?

No

Is 6V present at 

IC 6 02 pin8

(MB board)?

No

Power supply  IC301 (MB board)
defective

e

Y

 

 

 

 

 

s

Y s

e

Y

s

e

Y

s

e

Poor contact of the USB device

Defective FFC between the FR
board and the MB board.

Does replacing IC602(MB board) 
improve the symptoms?

No

Replace the MB board

 Yes

Replace the FFC between the
MB board and the IF board.
Do the symptoms improve?

No

Replace the MB board

2

0

6

C

I

(

.

MB board) defective

  Yes

Defective FFC between the IF
board and the MB board

USB (Rear) Device Flow 

USB device is not recognized

Insert the USB device again.
Is it recognized when the power is
turned OFF and then ON again?

No

Is 5V present at CN601 pin1

(MB-151

board)?

No

Is 6V present at 

IC601 pin8

(MB board)

No

Power supply IC301 (MB Board)

defective

Poor contact of the USB device

Does replacing IC601(MB board) 
improve the symptoms?

No

Replace the MB board

   Yes

IC601(MB board) defective

 Yes

Yes

Replace the MB board

Yes

9-12E

10-1

The components identifi ed by mark 

 or dotted

line with mark 

 are critical for safety.

Replace only with part number specifi ed.

Les composants iden tifi és par une marque 
sont critiquens pour la sécurité. 
Ne les remplace r que par une pièce portant le
numéro spécifi é.

The components identifi ed by mark   contain
confi dential information.
Strictly follow the instructions whenever the
components are repaired and/or replaced.

Les composants identifi és par la marque   con-
tiennent des informations confi dentielles.
Suivre scrupuleusement les instructions
chaque fois qu’un composant est remplacé et
/ ou réparé.

Abbreviation :

CEK : UK Model

CEL : CEL Model

10

1

2

3

4

2

9

10

2

7

ns

5

6

1

8

NOTE:

•   -XX and -X mean standardized parts, so they may 

have some difference from the original one.

•  Color Indication of Appearance Parts

Example:
KNOB, BALANCE (WHITE) . . . (RED)

                                                         
                              Parts Color     Cabinet’s Color

 

•  Items marked “*” are not stocked since they are sel-

dom required for routine service. Some delay should 
be anticipated when ordering these items.

•  The mechanical parts with no reference number in 

the exploded views are not supplied.

•  Accessories and packing materials are given in the 

last of the electrical parts list.

10-2

Ref. No.

Part No.

Description

1

3-077-331-21

+BV3 (3-CR)

2

3-077-331-41

+BV3 (3-CR)

3

4-467-107-01

PANEL (SIDE) L

4

4-467-108-01

PANEL (SIDE) R

5

A-1849-369-A

SERVICE ASSY ,FR CX

6

1-458-494-11

CARD, WIRELESS LAN

7

X-2587-508-1

PANEL (FRONT) SUB ASSY

8

X-2587-509-1

COVER (TRAY) ASSY

9

A-1954-532-A

SERVICE ASSY , PANEL TOP (LX)

10

4-418-726-01

TAPE (SWITCH)

10-3

Ref. No.

Part No.

Description

Remark

101

3-077-331-21

+BV3 (3-CR)

102

3-077-331-41

+BV3 (3-CR)

103

7-682-544-04

SCREW +B 3X3

104

1-855-038-11

DC FAN

105

A-1954-533-A

SERVICE ASSY , MB (LX)

106

1-839-648-11

POWER SUPPLY CORD      2.5A     250V

CEL

106

1-839-659-11

POWER SUPPLY CORD      5A       250V

UK

107

A-1850-153-C

LOADING FOR SERVICE (BPX-7)

108

1-490-178-11

SWITCHING REGULATOR

109

1-839-581-11

CABLE, FLEXIBLE FLAT (FIM-038)

110

1-839-586-11

CABLE, FLEXIBLE FLAT (TS-010)

111

1-839-584-21

CABLE, FLEXIBLE FLAT (TS-011)

112

4-467-105-01

CUSHION (FOOT)

113

4-237-065-01

CLAMP (L35)

CEL

The components identifi ed by mark 

 or dotted

line with mark 

 are critical for safety.

Replace only with part number specifi ed.

Les composants iden tifi és par une marque 
sont critiquens pour la sécurité. 
Ne les remplace r que par une pièce portant le
numéro spécifi é.

10

3

105

10

1

101

109

ns

108

112

ns

101

111

110

102

ns

107

104

106

112

113