DOWNLOAD Sony KV-28WX1A Service Manual ↓ Size: 1.2 MB | Pages: 39 in PDF or view online for FREE

Model
KV-28WX1A
Pages
39
Size
1.2 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-28wx1a.pdf
Date
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— 38 —
KV-28WX1
Note :
•
All capacitors are in 
µ
F unless otherwise noted.  pF:  
µµ
F
50WV or less are not indicated except for electrolytic and
tantalums.
•
All resistors are in ohms.
k  = 1000  , M  = 1000K
•
Indication of resistance, which does not have one for rating
electrical power, is as follows.
Pitch : 5 mm
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.
•
: 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.
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.
•
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.
•
All voltages are in V.
•
Circled numbers are waveform references.
•
: B+ bus.
•
: signal path. (RF)
VM
D
C
D3
D2
A
KV-28WX1
— 67 —
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
µPC393C
LM2940CT-5.0
LM2940CT
LM2940T-9.0
MCT7809CT
NJM78M09FA
µPC2405HF
2
3
5
6
7
1
4
CXA2000Q-TL
TDA7264
STR-S6708
 TDA8395T/N3
ST24E32M6TR
MC14052BDR2
E
B
C
BF871-127
L4941BV
TEA7605
1
8
1
10
11
20
1
4
5
8
IN
GND
OUT
E
C
B
DTA144ES
DTC114ES
DTC143TS
DTC144ES
2SC1740S-RT
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 
68
61
60
1
52
44
43
35
27
26
18
10
9
CXA2040Q-T4
(TOP VIEW)
MSP3400C-PS-C6-T
MSP3410B-PS-F7-T
PST593C-MMP-4P
1
20
21
40
41
60
61
80
( TOP VIEW )
SDA5250M-C5-GEG
( TOP VIEW )
1 32
30
21
29
4
13
5
20
14
TMS27PC010A-15FML
BF421L-AMMO
JA101TP-Q
2SA733-K
2SA933AS
2SA933S
2SA1091-O
2SC3502-E
2SC3601-E
2SC2808STP-R
E C B
( TOP VIEW )
C
B
E
 
DTC144EK
2SA1037K
2SA1162-G
2SC2412K
IN
GND
OUT
4
1
2
3
( TOP VIEW )
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