Sony KV-28WS2B Service Manual ▷ View online
— 41 —
KV-28WS2
Note :
•
All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50WV or less are not indicated except for electrolytic and
tantalums.
tantalums.
•
All resistors are in ohms.
k = 1000 , M = 1000K
k = 1000 , M = 1000K
•
Indication of resistance, which does not have one for rating
electrical power, is as follows.
electrical power, is as follows.
Pitch : 5 mm
Rating electrical power W
Rating electrical power W
•
: nonflammable resistor.
•
: internal component.
•
: panel designation, or adjustment for repair.
•
All variable and adjustable resistors have characteristic curve
B, unless otherwise noted.
B, unless otherwise noted.
•
: earth - ground.
•
: earth - chassis.
•
: no mounted.
5-2. CIRCUIT BOARDS LOCATION
1
4
/
Reference information
RESISTOR
: RN
METAL FILM
: RC
SOLID
: FPRD
NONFLAMMABLE CARBON
: FUSE
NONFLAMMABLE FUSIBLE
: RS
NONFLAMMABLE METAL OXIDE
: RB
NONFLAMMABLE CEMENT
: RW
NONFLAMMABLE WIREWOUND
:
ADJUSTABLE RESISTOR
COIL
: LF-8L
MICRO INDUCTOR
CAPACITOR
: TA
TANTALUM
: PS
STYROL
: PP
POLYPROPYLENE
: PT
MYLAR
: MPS
METALIZED POLYESTER
: MPP
METALIZED POLYPROPYLENE
: ALB
BIPOLAR
: ALT
HIGH TEMPERATURE
: ALR
HIGH RIPPLE
5-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS
Note : The components identified by shading and marked
are critical for safety. Replace only with the
part number specified.
part number specified.
Note : Les composants identifies par une trame et une
marque sont critiques pour la securite.
Ne les remplacer que par une piece portant le
numero specifie.
Ne les remplacer que par une piece portant le
numero specifie.
•
Readings are taken with a colour-bar signal input.
•
Readings are taken with 10M
Ω
digital multimeter.
•
Voltages are dc with respect to ground unless otherwise noted.
•
Voltage variations may be noted due to normal production
tolerances.
tolerances.
•
All voltages are in V.
•
Circled numbers are waveform references.
•
: B+ bus.
•
: signal path. (RF)
VM
K1
C
D
D2
D3
A1
A
J
KV-28WS2
— 69 —
SBX1790-51
5-4. SEMICONDUCTORS
STV9379
( TOP VIEW )
1
8
16
9
TDA4665T-T
8
7
6
5
1
3
4
( TOP VIEW )
2
LM393P
M5216P
TDA2822M
UPC393C
M5216P
TDA2822M
UPC393C
LM2940CT-5.0
LM2940T-9.0
MCT7809CT
LM2940T-9.0
MCT7809CT
2
3
5
6
7
1
4
CXA2000Q-TL
TDA7264
STR-S6709
TDA8395T/N3
ST24E32M6TR
TDA1387T/N1/T3
TL072CDR
TDA1387T/N1/T3
TL072CDR
MC14052BDR2
E
B
C
BF871-127
L4941BV
LM78L05ACZ
LM78L05ACZ
1
8
1
10
11
20
1
4
5
8
IN
GND
OUT
O
G
I
9
16
1
8
1
9
( TOP VIEW )
( TOP VIEW )
( TOP VIEW )
1
(TOP VIEW)
19
20
32
51
33
64
52
1
2
3
1 V
OUT
2 V
IN
3 GND
SE135N
(TOP VIEW)
CXA2040Q-T4
IS474
1
4
1
28
15
14
( TOP VIEW )
KM62256CLG-7
L78L05ACZ
MSP3400C-PS-C6-T
MSP3410B-PS-F7-T
SDA5273CP-GEG
MSP3410B-PS-F7-T
SDA5273CP-GEG
68
61
60
1
52
44
43
35
27
26
18
10
9
4
1
2
3
( TOP VIEW )
PST593C-MMP-4P
NJM78M09FA
TEA7605
µPC2405HF
TEA7605
µPC2405HF
( TOP VIEW )
( TOP VIEW )
DSP56004-FJ66R2
SDA5250M-C5-GEG
SDA5250M-C5-GEG
1
20
21
40
41
60
61
80
TMS27PC020A-15FML
( TOP VIEW )
1 32
30
21
29
4
13
5
20
14
3
2
1
BF421L-AMMO
2SA933S-RT
2SA933S
2SA1091-O
2SC2389STP-R
2SA933S-RT
2SA933S
2SA1091-O
2SC2389STP-R
2SC2510-O
2SDC2808STP-R
2SC3502-E
2SC3601-E
2SDC2808STP-R
2SC3502-E
2SC3601-E
E
C
B
DTA144ES
DTC114ES
DTC143TS
DTC114ES
DTC143TS
DTC144ES
2SC1740S-RT
2SC1740S-RT
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