Sony KV-BT21M90 Service Manual ▷ View online
– 47 –
KV-BT21M90
RM-W101
A BOARD VOLTAGE LIST AND WAVEFORM
Ref
Pin No.
Voltage[v]
Ref
Pin No.
Voltage[v]
Ref
Pin No.
Voltage[v]
Q814
B
0.7
C
5.0
E
2.0
Q816
B
*
C
(-6.0)[-2.5]
E
0
Q900
B
1.3
C
(0)[1.2]
E
(0)[2.1]
Q901
B
-0.5
C
(-4.2)[1.5]
E
0
Q902
B
0
C
-1.7
E
0
Q903
B
0
C
0
E
0
Q904
B
0
C
0
E
0
Q905
B
0
C
0
E
0
Q906
B
0
C
0
E
0
Q907
B
0
C
0
E
0
Q805
B
-9.2
334.0Vp-p
13
C
134
E
0.1
Q806
B
6.0
C
9.0
E
6.0
Q807
B
6.0
C
0
E
(5.0)[6.1]
Q808
S
0
9.20Vp-p
15
G
6.0
D
(13.2)[14.4]
Q809
B
*
C
*
E
*
Q810
B
(2.0)[0.6]
C
(2.0)[0.5]
E
(1.7)[1.9]
Q908
B
0
C
0
E
0
Q909
B
0
C
0
E
0
Q910
B
2.26
C
(4.3)[5.1]
E
1.7
Q911
B
5.1
C
(9.0)[4.9]
E
4.5
Q912
B
0.1
C
0.5
E
0
Q8009
B
196
C
199
E
197
Q8010
B
0.5
C
0.9
E
0.3
DY800
2.0Vp-p
12
IC751
1
1.8
1.88Vp-p
PAL
1
2.0Vp-p
NTSC
1
2
1.7
1.55Vp-p
2
3
1.8
2.0Vp-p
3
C BOARD VOLTAGE LIST AND WAVEFORM
Ref
Pin No.
Voltage[v]
Ref
Pin No.
Voltage[v]
Ref
Pin No.
Voltage[v]
4
0
5
5.1
6
(196)[195]
7
(137)[133]
138.0Vp-p
PAL
4
152.0Vp-p
NTSC
4
8
152
106.0Vp-p
PAL
5
94.0Vp-p
NTSC
5
9
(138)[136]
126.0Vp-p
PAL
6
142.0Vp-p
NTSC
6
Q701
B
(5.0)[6.0]
C
0
E
1.2
J751
G1-1
0.6
G1-2
0.6
G1-3
0
G2
(288)[285]
H1
0
H2
0
KB
(138)[137]
KG
151.3
KR
(137 )[133]
– 50 –
KV-BT21M90
RM-W101
200V
NC
NC
GND
H1
B
G
R
GND
1K
9V
1-687-880-14
(1-722-473-14)
B IN
G IN
R IN
GND
IK
VDD
R OUT
G OUT
B OUT
GND
KR
KG
G1-3
KB
G1-2
H2
H1
G1-1
G2
RCV
G4
1
3
4
5
6
7
8
9
10
11
13
GND
2
1
8
9
1
7
1
5
D750
D754
D755
D756
IC751
D781
J751
A701
A703
A705
RV750
L750
CN701
CN703
CN704
CN705
L780
L781
L782
L783
R756
R757
R758
R760
R763
R764
R765
R773
R774
R780
R781
R783
C751
C752
C753
C754
R794
R795
EY701
EY703
C781
C782
C787
JW1781
JW1782
D782
Q701
R713
R752
R753
R754
R766
R767
R768
R775
R776
R777
R778
R784
R785
R786
C759
C783
C786
C788
C789
C790
D780
R4
EY706
EY707
A704
A702
JW1750
[VIDEO AMP]
C
– C Board –
PRINTED WIRING BOARDS
– 51 –
KV-BT21M90
RM-W101
4-6. SEMICONDUCTORS
DIODE
BY228/A52A
CATHODE
ANODE
CATHODE
ANODE
(GRN)
ANODE
(GRN)
CATHODE
ANODE
SPB-25MVWF
D3SB60F3
HSS82-TJ
MTZJ-T-77-15
RD5.1ESB2
UPC574J
1SS133T-77
MTZJ-T-77-15
RD5.1ESB2
UPC574J
1SS133T-77
AM01AV1
D1NL20U
D3S6M-F
EGP20G
EL1Z
GPO8D
RU4AM-T3
S3L20UF4
10ERB20-TB3
10ERB20-TA2B5
11EQS10-TB5
D1NL20U
D3S6M-F
EGP20G
EL1Z
GPO8D
RU4AM-T3
S3L20UF4
10ERB20-TB3
10ERB20-TA2B5
11EQS10-TB5
MMDL914T1
1PS226-115
MSB709-RT1
MSD601-RT1
UN2211
UN2216
MSD601-RT1
UN2211
UN2216
2SC3209LK
MA2ZD14001S0
MA77
UDZSTE-175.6B
UDZSTE-179.1B
MA77
UDZSTE-175.6B
UDZSTE-179.1B
TRANSISTOR
IRF614-037
STV9302A
BA033T
TA7805S
FN155
2SA1091-0
2SC3779C-DAA
2SC3779C-DAA
RPM7240-SH5
ANODE
CATHODE
E
B
C
E C B
SE135N-LF38
CATHODE
ANODE
AN5276T
1
7
IC
3
1
2
1
3
2
NJM4556AD
DIP
1
TOP VIEW
Dual In-line Package
Pin 6~98
Pin 6~98
Small Outline L-leaded Package
Pin 8~98
Pin 8~98
SOP
1
TOP VIEW
CAT24WC16J1-TE13
LM2903DT
TJM4558CDT
LM2903DT
TJM4558CDT
2SC5885
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