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HCD-HX3/HX5/HX7 6-8. PRINTED WIRING BOARDS - USB Section (HX3/HX5) - • See page 23 for Circuit Boards Location. :Uses unleaded solder. 1 2 3 4 5 6 7 8 9 10 USB BOARD (COMPONENT SIDE) A (NC) C902 C903 C904 CN904 R928 31 IC915 45 C916 C901 R901 R938 C915 R937 R983 C907 C905 C917 B R934 USB BOARD (CONDUCTOR SIDE) RB922 RB921 IC921 JR902 R950 R948 R921 IC901 R933 R946 R920 C914 RB923 RB924 R925 R926 C908 C922 C921 C918 C913 C906 R924 R923 C920 CN908 C A/K D905 AK D R922 C910 C912 R919 C909 X901 R981 R913 R915 R977 R978 R979 R932 R982 R984 R976 CN905 C MAIN BOARD CN307 (Page 32) R975 R974 R973 R972 R971 R970 11 1-872-405- (11) R943 R904 R944 R905 R941 R902 R942 R903 R906 R907 R916 R917 D901 D902 A A/K K FB902 K A/K A FB901 4 1 CN902 (USB) C930 EP901 11 1-872-405- (11) (CHASSIS) JW555 E USB POWER BOARD 1 5 R315 R314 R409 2 4 C358 R317 R307 JW554 C325 JR360 JW556 CN324 1 IC319 JR361 2 C324 D208 L101 (HX5) F 4 1 CN322 11 1-873-248- (11) E MAIN BOARD CN321 (Page 32) • Semiconductor Location Ref. No. Location D208 D901 D902 D905 F-6 C-9 C-10 C-1 IC319 E-5 IC901 B-8 IC915 B-1 IC921 B-7 HCD-HX3/HX5/HX7 26 26

Section	Page
COVER	1
TABLE OF CONTENTS	3
1. SERVICING NOTES	4
2. GENERAL	5
3. DISASSEMBLY	9
3-1. DISASSEMBLY FLOW	9
3-2. PANEL (TOP)	10
3-3. FRONT PANEL BLOCK	10
3-4. MAIN BOARD (HX3/HX5)	11
3-5. MAIN BOARD/XM BOARD (HX7)	11
3-6. SWITCHING POWER BOARD/SUB POWER BOARD	12
3-7. LOADING MECHANISM BLOCK	12
3-8. BASE UNIT	13
3-9. BELT	13
3-10. OP BASE ASSY (KSM-213D)	14
4. TEST MODE	15
5. ELECTRICAL CHECKS	17
6. DIAGRAMS	18
6-1. Block Diagram – CD SERVO Section –	18
6-2. Block Diagram – TUNER/USB/BLUETOOTH Section –	19
6-3. Block Diagram – MAIN Section –	20
6-4. Block Diagram – AMP Section –	21
6-5. Block Diagram – PANEL/POWER SUPPLY Section –	22
6-6. PRINTED WIRING BOARDS – CD Section –	24
6-7. SCHEMATIC DIAGRAM – CD Section –	25
6-8. PRINTED WIRING BOARDS – USB Section (HX3/HX5) –	26
6-9. SCHEMATIC DIAGRAM – USB Section (HX3/HX5) –	27
6-10. PRINTED WIRING BOARDS – BLUETOOTH Section (HX5/HX7) –	28
6-11. SCHEMATIC DIAGRAM – BLUETOOTH Section (HX5/HX7) –	29
6-12. PRINTED WIRING BOARDS – XM Section (HX7) –	30
6-13. SCHEMATIC DIAGRAM – XM Section (HX7) –	31
6-14. PRINTED WIRING BOARD – MAIN Section –	32
6-15. SCHEMATIC DIAGRAM – MAIN Section (1/3) –	33
6-16. SCHEMATIC DIAGRAM – MAIN Section (2/3) –	34
6-17. SCHEMATIC DIAGRAM – MAIN Section (3/3) –	35
6-18. PRINTED WIRING BOARD – AMP Section (HX3/HX7) –	36
6-19. SCHEMATIC DIAGRAM – AMP Section (HX3/HX7) –	37
6-20. PRINTED WIRING BOARD – AMP Section (HX5) –	38
6-21. SCHEMATIC DIAGRAM – AMP Section (HX5) –	39
6-22. PRINTED WIRING BOARD – OUTPUT Section –	40
6-23. SCHEMATIC DIAGRAM – OUTPUT Section –	40
6-24. PRINTED WIRING BOARDS – PANEL Section –	42
6-25. SCHEMATIC DIAGRAM – PANEL Section –	43
6-26. PRINTED WIRING BOARDS – POWER SUPPLY Section –	44
6-27. SCHEMATIC DIAGRAM – POWER SUPPLY Section –	45
7. EXPLODED VIEWS	64
7-1. PANEL SECTION	64
7-2. CHASSIS (TOP) SECTION	65
7-3. PANEL KEY SECTION	66
7-4. FRONT PANEL SECTION	67
7-5. MAIN SECTION	68
7-6. CHASSIS SECTION	69
7-7. LOADING MECHANISM SECTION	70
7-8. BASE UNIT SECTION (BU-K6BD90-WOD: HX7) (BU-K6BD90U-WOD: HX3/HX5)	71
8. ELECTRICAL PARTS LIST	72
AMP	72
ANT	75
BT	75
CD	76
FRONT PANEL	78
HEADPHONE	79
MAIN	79
MOTOR	84
SPEAKER	84
SUB POWER	84
SWITCHING POWER	84
TOP PANEL (FUNCTION)	86
TOP PANEL (PLAY)	86
USB	87
USB POWER	88
XM	88
XM REGULATOR	89

Match case Limit results 1 per page

HCD-HX3/HX5/HX7

6-8.

PRINTED

WIRING

BOARDS

– USB Section (HX3/HX5) –

•

See page 23 for Circuit Boards Location.

:Uses unleaded solder.

R928

CN904

C902

C903

C904

C905

C907

R983

R901

R937

R938

C901

IC915

C916

C917

C918

D905

R913

R915

X901

C909

R919

C910

C912

R981

C908

R922

C913

R934

C915

C906

C922

C921

R977

R978

R979

R932

R982

R984

R976

CN905

CN908

EP901

CN902

RB922

RB921

IC921

RB924

RB923

R975

R974

R973

R972

R971

R970

R902

R941

R943

R904

R944

R905

R906

R903

R942

R907

C930

FB902

D901

FB901

R917

R916

D902

C920

R925

R926

R924

R923

C914

R920

R921

R946

R933

R950

R948

JR902

IC901

L101

D208

IC319

JW555

JW554

C324

C325

CN322

JW556

CN324

JR361

R409

C358

R314

R307

R317

R315

JR360

MAIN BOARD

CN307

USB BOARD

(COMPONENT SIDE)

1-872-405-

(11)

1-872-405-

(11)

USB BOARD

(CONDUCTOR SIDE)

(CHASSIS)

A/K

(NC)

A/K

(USB)

1-873-248-

(11)

USB POWER BOARD

MAIN BOARD

CN321

(HX5)

•

Semiconductor

Location

Ref. No.

Location

D208

F-6

D901

C-9

D902

C-10

D905

C-1

IC319

E-5

IC901

B-8

IC915

B-1

IC921

B-7

(Page 32)