Schematic Diagram - Bd Switch Section; Printed Wiring Board - Bd Switch Section - Sony MDS-JB920 Service Manual

MDS-JB920
6-15. SCHEMATIC DIAGRAM – BD SWITCH Section –
6-16. PRINTED WIRING BOARD – BD SWITCH Section –
•
See page 45 for Circuit Boards Location.
MAIN BOARD (1/3)
CN401
(Page 55)
MAIN BOARD
CN401
(Page 63)
– 69 –
• IC Block Diagrams
– BD Board –
IC101 CXA2523AR
48 47 46 45 44
USROP
–
+
RFA1
RFA2 RFA3
I 1 –
HLPT
–1
1
–
–
2
– –2
J 2
OFST
PTGR
–
1
– –2
2
CVB
–
–1
VC 3
GRV
GRVA PBSW
–
+
A 4
–
–
–
AA
IVR
–
ABCDA
+
B 5
–
IVR BB
+
+
–
– FEA
+
C 6
–
IVR CC
–
–
+
+ ATA
+
D 7
–
DD
IVR
+
E 8
+ EE'
–
EE
IVR
–
EFB
EBAL
ESW
F 9 +
+
–
FF
IVR
–
FF'
IV
FBAL
GSW
PD 10 AUXSW
COMMAND
+ –
+ –
SCRI - PARA
DECODE
APC 11
APCREF 12
13 14 15 16
43 42 41 40 39 38 37
RF AGC EQ
+
–
USRC
DET EQ
BPF3T
AUX
PEAK3T
3T SW
P-P
3T WBL
TEMP
PEAK
BOTTOM 36 BOTM
PBH
WBL
35 ABCD
34 FE
33 AUX
BPFC
32 ADFG
31 ADAGC
30 ADIN
DET
BPF22
ADIP
29 ADFM
WBL
AGC
WBL
–1 TG
28 SE
PTGR
– –2
SEA
+
–
27 CSLED
+
TESW –1 TG
26 TE
–2
TEA
WBL
3T VI CONV 25 WBLADJ
EQ
BGR
VREF
17 18 19 20 21 22 23 24
– 70 –