Sony CFD-E55 Service Manual page 4

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MODEL TYPE IDENTIFICATION
In this set, the routing of speaker lead wires and the boards have been changed in the midway of production, and the set is grouped into the
following four types depending on the specifications.
TYPE A: Original model.
TYPE B: To the original model, the routing of speaker lead wires is changed.
TYPE C: To the type B, the print patterns of board are changed.
TYPE D: To the type C, the shapes of boards are changed.
• Model Type Discrimination
Identify each type from the part number printed on each board by referring to the following table.
Also, each board is common to type A and type B, but routing of speaker lead wires is different. For details of different places, refer to "6.
Diagrams 6-10. Printed Wiring Boards – MAIN/POWER SUPPLY Section (Type A, B) –" (page 42, location A-1 and B-1).
Type A, B
Board
BATT (+)
1-675-297-11
BATT (–) 1-675-298-11
CD 1-675-290-11
CD MOTOR
KEY 1
1-675-292-11
KEY 2
1-675-293-11
KEY 3
1-675-294-11
LCD
1-675-295-11
LED *1
998-11
MAIN 1-675-289-11
POWER 1-675-291-11
REC SW 1-675-296-11
*1) For the LED board, only the lower five digits of part number is printed.
• Precaution on Replacing the Boards
The supplied boards are all type D, and therefore if the board is replaced, use the board of type D only whichever model is serviced.
However, on the type D model, the number of pins of connectors that connect MAIN board to CD board, and MAIN board to POWER
board has been changed, and accordingly the type D is not interchangeable with type A, B, and C respectively.
Therefore, if even one of MAIN, CD, and POWER boards is replaced, replace all three boards simultaneously.
MODEL IDENTIFICATION

C F D - E 5 5
MODEL NO.
US, Canadian, E (AC 120V area),
Mexican models: AC: 120 V 60 Hz 17 W
Singapore, Argentine,
Australian models: AC: 230 V - 50 Hz 17 W
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Type C Type D
Part No.
1-675-297-12 1-677-315-11
1-675-298-12 1-677-316-11
1-675-290-12 1-677-308-11
in common to all types
1-675-292-12 1-677-310-11
1-675-293-12 1-677-311-11
1-675-294-12 1-677-312-11
1-675-295-12 1-677-313-11
998-12 319-11
1-675-289-12 1-677-307-11
1-675-291-12 1-677-309-11
1-675-296-12 1-677-314-11
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