Printed Wiring Board - Key Board - Sony XR-CA670X Service Manual

XR-CA670X
6-8. PRINTED WIRING BOARD – KEY Board –
1 2 3
KEY BOARD
(COMPONENT SIDE)
A
A
LED954
K
1
S902
LED954, S902
1
SOURCE
LSW905
LSW904
B
SEL
R966
R950
4 3 2
LED953 LED903
R904
(VOLUME)
A A
K R967
K
LSW907
S903
R951
ATT
1
C
LSW906
2
−
3
LED903, 953, S903
4
DSO
1 2
LSW908
3
4
MODE
3
4 2
D
LED903, 911,
LSW908
LED951 − 954
A K
KEY BOARD (CONDUCTOR SIDE)
E
F
R908
R907
R905
R906
R962
R903
G
R961
R960
R902
H
• Semiconductor Location
Ref. No. Location Ref. No. Location Ref. No. Location
D901 G-10 IC971 C-13 LED951 C-13
D902 G-10 LED952 C-12
D981 G-6 LED903 C-1 LED953 C-1
D983 G-5 LED911 C-13 LED954 A-2
LED933 C-11
IC901 G-7 LED934 C-3
4 5
2
3
1
4
+
LED934
LCD
BACK
LIGHT
1
72
LSW909
LSW922
LSW910
A1 K1
S2 S1 S2 S1 S2 S1
K1 A1 K1 A1
LSW909 LSW910 LSW922
AF
BTM/MTL DISC −
SENS 1
R909
R910
R921
R941
R946
R942
R947
R983
R982
R989
D983
R970
C985
R981
C986
R929
R990
6 7 8
LCD901
LIQUID CRYSTAL DISPLAY
LSW920 LSW919
LSW921
S2 S1 S2 S1 S2 S1 S2
K1 A1 K1 A1 K1 A1 K1
LSW921 LSW920 LSW919 LSW918
DISC + REP SHUF BL SKIP/ALBM −
2 3 4 5
R920
R919
60 41
61 40
IC901
80 21
1 20
20 20
9 10 11
2 3 4
36
1
LSW913
+
SEEK
LED933
LSW914
LCD
BACK
LIGHT
37
4
LSW917 LSW915
LSW918 3
LSW916
2
S1 S2 S1 S2 S1 S2 S1
A1 K1 A1 K1 A1 K1 A1
LSW917 LSW916 LSW915
TA
ALBM +/ATA LIST
6 PTY
R917
R916
R915
R914
R918
R971
D902
R928
CN901
R978
R927
D901
R979
R980
R975
R977
R976
1-686-744-
12 13
LSW912
R935
DSPL
4
3
2 1
LED911
R911 LED951
K
LED952 K
SEEK
A K A A
S911
+
−
IC971
−
−
2 4
LED911, 951, S911
1 3
EQ3
1 2 3 4
12
LSW901
1
OFF 1-686-744- (12)
R934
R901
C971
R972
R931
R930
B
SUB BOARD
CN801
12
(Page 19)
(12)