Printed Wiring Board - Key Board - Sony XR-CA440H Service Manual

XR-CA440H
6-6. PRINTED WIRING BOARD – KEY Board –
1 2 3
KEY BOARD
A (COMPONENT SIDE)
+
B
LED902, 903,
S902
SOURCE
VOL
A K A K
(ILLUMINATION)
C
LED906, S906
−
MODE
A K
SEL
D
S2 S1
K1 A1
E
KEY BOARD
(CONDUCTOR SIDE)
F
R963
G
H
4 5 6
ATT
1
− +
DISC
1 2
SENS
A1 K1 A1 K1 A1
S1 S2 S1 S2 S1
R973
PL902
(LCD BACK LIGHT)
• Semiconductor
Location
Ref. No. Location
D901 G-10
D991 F-9
IC901 F-7
LED902 C-1
LED903 C-2
LED906 C-1
LED922 C-13
LED923 C-14
LED940 C-12
LED950 C-3
7 8 9
LED902, 903, 906, 922,
923, 940, 950
A K
LCD901
LIQUID CRYSTAL DISPLAY
− +
REP SHUF BL SKIP/
ALBM
3 4 5
K1 A1 K1 A1 K1 A1 K1 A1
S2 S1 S2 S1 S2 S1 S2 S1
64
1
16
49
IC901
48
17
32 33
18 18
10 11 12
54
(ILLUMINATION)
MTL
BTM
/ATA
6
K1 A1 K1
S2 S1 S2
(Page 14)
MAIN BOARD
A
CN701
PL901
(LCD BACK LIGHT)
K K
K A K
13 14
+
A K A K
SEEK
AMS
LED922, LED923,
S922
D-BASS
MBP
−
DSPL
OFF
A1 K1 A1 K1
11
S1 S2 S1 S2
(11)
R972
R962
11
1-683-350- (11)