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ICF-SW55
SERVICE MANUAL
Ver 1.1 2002.12

US Model Canadian Model AEP Model UK Model E Model Australian Model

LW/MW/SW/FM STEREO PLL SYNTHESIZED RECEIVER
9-956-854-12
2002L0200-1 © 2002.12

Sony Corporation
Personal Audio Company Published by Sony Engineering Corporation

ICF-SW55
SERVICE MANUAL
Ver 1.1 2002.12

US Model Canadian Model AEP Model UK Model E Model Australian Model

SUPPLEMENT - 1
File this Supplement with the Service Manual.

Subject : z CHANGE OF ELECTRICAL PARTS z CHANGE OF MICRO COMPUTER BOARD

9-956-854-81

ICF-SW55

Electrical parts and microcomputer board became changes from the middle of the production.

HOW TO DISTINGUISH A NEW TYPE
It is a new type if the code No. printed on the microcomputer board is 1-640-742-15. · CHANGED ELECTRICAL PART LIST MICRO COMPUTER
Ref.No. C925 IC904 IC905 R1001 R1002 R1003 R1004 RV901 RV902

FORMER TYPE
Part No. Description 50V 1-163-089-00 CERAMIC CHIP 6PF 8-759-551-69 IC M6M80021FP (10pin) 8-759-551-69 IC M6M80021FP (10pin) ________________________________________ ________________________________________ ________________________________________ ________________________________________ 1-241-581-11 1-241-581-11 RES, ADJ, CERMET RES, ADJ, CERMET 100K 100K

NEW TYPE
Part No. Description ________________________________________ 8-759-464-95 IC AK6420AF-E2 (8pin) 8-759-464-95 IC AK6420AF-E2 (8pin) 1-216-091-00 METAL CHIP 56K 1-216-086-00 METAL CHIP 36K 1-216-091-00 METAL CHIP 56K 1-216-086-00 METAL CHIP 36K ________________________________________ ________________________________________

5% 5% 5% 5%

1/10W 1/10W 1/10W 1/10W

2

ICF-SW55

PRINTED WIRING BOARD ­ MICRO COMPUTER SECTION ­
1 2 3

Last digit : -15
4 5 6 7 8 9 10 11

MICRO COMPUTER BOARD (SIDE A)
C970 R902

MICRO COMPUTER BOARD (SIDE B)
D905 D906
C906 C914

KEY BOARD
1 15

D918 Q902

D901

C971

A

R860

C912 C913

ECB

BCE
R997

Q901

D907

Q916

ECB

R901

C901

R956 R812

R922 R921 R920 R919

40 41

25

R912

24
H902 R913
R907 R911

IT MODEL X901 EA,IT MODEL

2AE2,G,EA,IT MODEL
C915 R908

PL1

H901

B

D904 R959 R957 D903 C929 R958 C928
C910 C927

C916

IC901
C939
R909 R917

EA MODEL R918

64 65 80

1
C917 R904 C902

R945

R905

5 4 8 1

R1004
R914

R942
R941

ECB
Q903 R998

R1002 R906 R1001

321

28 29

15

IC906
14
R961

R916 US,CND,E2 MODEL

IC911

R1003

96

95

IC903

C

42 43 56

1

LCD901

S904 (TEST)

D

S901 (RESET)

E
C969

7

1

IC915
8 7 14 1

R820 R944

D902 R943 R982 C938 R983

IC914

8

14
R841

C950

F

R986 R985

IC904
R950

C963 CN901 1

BCE

4

1

Q912 Q911
C937 R816 C936

BCE

C962 R991

190 D910 R861 C921 C919 C920 D912

1

5
R970
R992

BCE

C961

4

8 BCE Q913 1 R994

D911

Q914

G

SIGNAL BOARD

C960

7

1 41

40
C951 R955

21 20

1 2 3 1 2 3

IC907
S902 TIME SET

A
24 R980

R984
R996

C941

IC905
R988 R971

5

8 8 R993 7

IC912
14 1

IC908

IC902

R972 R966
C934 C964 C935 R979 C933

R995
R967

60

1 61
C924

R990 C905

R977 R981

D908

R968 R969

ECB

R978

R974
C932 R976

R954

Q909 R999

C967

R814 C909
R813

C922 C923 X902

R928 R927 R926 R925 R924 R923

14

R939 R937

R815 R932 R936 R940

8

Q910

80

R938

C965

R989 R987

ECB

IC913
14

R935 R933

S903 LIGHT/BATT CHECK Q905

8

R934

ECB

BCE

C931

H

ECB

Q907

Q915 C940

C966 R964 R963

Q904 S905

R975 Q908

R973 R851

BCE

R965

1

R931 R929 R930

POWER

t

BCE

C942

IC910

7

ECB

S905 LOCK R903

Q906

D909

1-640-742-

15 (15)

1-640-742-

15 (15)

3

3

ICF-SW55

SCHEMATIC DIAGRAM ­ MICRO COMPUTER SECTION ­ page 23 (Location H-I, 17-20)

Last digit : -15

For printed wiring board.
Note: · z : Through hole. · :: Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Pattern face side: (Side B) Parts face side: (Side A)

· Semiconductor Location
Ref. No. D901 D902 D903 D904 D905 D906 D907 D908 D909 D910 D911 D912 D918 H901 H902 IC901 IC902 IC903 IC904 IC905 IC906 IC907 IC908 IC910 IC911 IC912 IC913 IC914 IC915 Q901 Q902 Q903 Q904 Q905 Q906 Q907 Q908 Q909 Q910 Q911 Q912 Q913 Q914 Q915 Q916 Location A-3 F-2 B-3 B-2 A-3 A-3 A-4 H-2 H-2 G-3 G-3 G-5 A-2 B-5 B-6 B-3 G-4 C-2 F-2 G-2 C-3 G-5 G-5 H-5 B-6 G-3 G-3 F-2 E-2 A-3 A-2 B-5 H-5 H-5 H-2 H-2 H-2 H-2 H-3 F-3 F-3 G-2 G-3 H-2 A-2

! : Changed portion

Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.

!

!

· Abbreviation CND : Canadian model IT : Italian model G : Germany model EA : Saudi Arabia model · 1AE2, 2AE2 : This shows the differences of the FM/SW frequency bands.

(Location D-F, 6-13)

! !

!

!
! !

!

4

4

ICF-SW55 Printing Method for Large Sized Documents Such As Circuit Diagrams
Printing the page that exceeds A4-size two pages (or letter size) is possible by specifying the print range. (Acrobat Reader Version 4.0 or later) 1. The enlarged print is made, if a smaller range than A4 size is specified and the A4 size is selected as a print paper. 2. Almost real sized print is made, if the range is specified, meeting the print paper size. 3. The reduced print is made, if a larger range than the print paper size is specified. Printing by Specifying a Range In printing out the drawings such as a schematic diagram and a printed wiring board larger than the printed paper size, they can be printed by specifying the range. (Acrobat Reader Version 4.0 or later) 1. Display the page to be printed. 2. From the File menu, select [Page Setup] and set the paper size. 3. From the Command bar, select [Graphic Select Tool]. (Keep pressing T , select )

4. Dragging the cursor, enclose the range on the page to be printed. 5. From the File menu, select [Print] and make sure that the [Selected Graphic] is already checked. Also, if [Fit to page] is checked, the selected range is enlarged or reduced (and rotated as necessary) meeting the paper size.

@

!

6. To cancel the printed range, click an arbitrary position on the screen.

5

ICF-SW55

REVISION HISTORY
Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. 1.0 Date 1991. 12 1992.05 1.1 2002. 12 New Correction-1 (9-956-854-91) Change of electrical parts and microcomputer board. Including correction-1.
(ECN-TRA01918)

Description of Revision