Sony HCD-C990 Service Manual - Page 64

Key Board, Vol Board, Control Board

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HCD-C770/C990 • Semiconductor Location Ref. No. Location D801 A-6 D802 A-5 D803 A-4 D804 A-3 D805 A-2 7-33. PRINTED WIRING BOARDS - CONTROL Section - • See page 37 for Circuit Boards Location. 1 2 3 4 5 KEY BOARD (COMPONENT SIDE) A S820 (DISC5) D805, S819 DISC5 KEY BOARD (CONDUCTOR SIDE) B S818 (DISC4) D804, S817 DISC4 S816 (DISC3) D803, S815 DISC3 S814 (DISC2) D802, S813 DISC2 M DDCON BOARD CN812 (Page 62) C CONTROL BOARD (COMPONENT SIDE) 6 7 11 1-685-069- (11) S812 (DISC1) D801, S811 DISC1 11 1-685-069- (11) D VOL BOARD ROTARY ENCODER E VOLUME CONTROL BOARD (CONDUCTOR SIDE) 3 1 11 1-685-887- (11) + PRESET − F NEXT PREV 11 1-685-068- (11) N DDCON BOARD CN804 (Page 62) DISPLAY SOUND, − G BAND FUNCTION 1-685-068- 11 (11) S821 FIELD, + 64 64

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HCD-C770/C990
64
64
7-33. PRINTED
WIRING
BOARDS
– CONTROL Section –
•
See page 37 for Circuit Boards Location.
DISC5
D805, S819
S820
DISC4
D804, S817
S818
(DISC5)
(DISC4)
DISC3
D803, S815
S816
(DISC3)
DISC2
D802, S813
S814
(DISC2)
DISC1
D801, S811
S812
(DISC1)
M
DDCON BOARD
CN812
1-685-068-
PRESET
−
+
NEXT
PREV
SOUND,
−
FIELD,
+
S821
DISPLAY
BAND
FUNCTION
N
DDCON BOARD
CN804
ROTARY ENCODER
1
3
VOLUME
(COMPONENT SIDE)
KEY BOARD
(CONDUCTOR SIDE)
KEY BOARD
(COMPONENT SIDE)
VOL BOARD
1-685-069-
11
(11)
1-685-069-
11
(11)
CONTROL BOARD
1-685-068-
11
(11)
11
(11)
A
B
C
D
E
F
G
1
2
3
4
5
6
7
1-685-887-
11
(11)
CONTROL BOARD
(CONDUCTOR SIDE)
• Semiconductor
Location
Ref. No.
Location
D801
A-6
D802
A-5
D803
A-4
D804
A-3
D805
A-2
(Page 62)
(Page 62)