DOWNLOAD Sony KV-28WF3A Service Manual ↓ Size: 13.69 MB | Pages: 73 in PDF or view online for FREE

Model
KV-28WF3A
Pages
73
Size
13.69 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-28wf3a.pdf
Date
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90
DFP
60
59
56
57
SBUS Interface
IDENT
DEMODULATOR
A/D
SCART Switching Facilities
A/D
D/A
D/A
D/A
D/A
D/A
D/A
I2C Interface
25
23
65
68
1
3
4
5
7
6
48
50
51
47
30
34
31
28
33
37
36
A Board IC201 MSP3400C-PS-C6-T/MSP3410B-PS-F7-T
5-5. IC BLOCK DIAGRAMS
2
7
8
1
6
5
3
4
D Board IC261 TDA2822M
FLYBACK
GENERATOR
THERMAL
PROTECTION
2
6
3
5
4
7
1
POWER
AMPLIFIER
+
-
D Board IC802 STV9379
C Board IC703,704,705 TDA6111Q/N4
6
4
MIRROR
7
3
DIFFERENTIAL
STAGE
MIRROR
V bias
3
CURRENT
SOURCE
5
MIRROR
1
MIRROR
2
FOLLOWERS
7V
8
16
10
5
9
A Board IC303, TDA4665T-T
SIGNAL
CLAMPING
LINE
MEMORY
SAMPLE
AND
HOLD
LP
14
SIGNAL
CLAMPING
LINE
MEMORY
SAMPLE
AND
HOLD
LP
SANDCASTLE
DETECTOR
FREQUENCY
PHASE
DETECTOR
DIVIDER
BY 192
6 MHz
CCO
DIVIDER
BY 2
LP
1
3
12
11
KV-28WF3/32WF3
SECTION 6
EXPLODED VIEWS
REF. NO.              PART.NO                    DESCRIPTION                                     REMARK
REF. NO.              PART.NO                    DESCRIPTION                                     REMARK
•
Items with no part number and no description are not 
stocked because they are seldom required for routine 
service.
•
The construction parts of an assembled part are indi-
cated with a collation number in the remarks column. 
•
Items marked “ * “ are not stocked
since they are seldom required for
routine service. Some delay should
be anticipated when ordering 
these items.
6-1.  CHASSIS
NOTE :
91
 
12
 
13
 
8
 
7
 
5
 
1
 
2
 
3
 
4
 
11
 
15
 
6
 
10
 
9
 
14
1
£
 1-571-433-21
SWITCH, PUSH (AC POWER)
2
 *4-203-457-01
BRACKET, 
MAIN
3
£   1-765-286-11
CORD, POWER
4
*4-202-531-01
AC CORD LOCK (AC)
5
*A-1640-244-A
D BOARD, COMPLETE 
  (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
*A-1640-305-A
D BOARD, COMPLETE 
  (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
6
£
 1-453-222-11
TRANSFORMER ASSY, FLYBACK (NX-4003/U2B4)
  (KV-28WF3A/28WF3B/28WFD3/28WF3E/28WF3K)
£
 1-453-223-11
TRANSFORMER ASSY, FLYBACK (NX-4123/U2B4)
 
 
 
      (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
7
*A-1636-030-A
G BOARD, COMPLETE 
  (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
*A-1636-031-A
G BOARD, COMPLETE 
  (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
8
 *4-203-613-01
SUPPORTER 
G
9
 
 1-693-338-11
TUNER (VIF)(AEP)
         (KV-28WF3A/28WF3D/28WF3E/28WF3K/
             32WF3A/32WF3D/32WF3E/32WF3K)
 1-693-340-11
TUNER (VIF) (FR) (KV-28WF3B/32WF3B)
10
 
*A-1632-777-A
A BOARD, COMPLETE (KV-28WF3A)
*A-1632-776-A
A BOARD, COMPLETE (KV-28WF3B)
*A-1632-724-A
A BOARD, COMPLETE (KV-28WF3D)
*A-1632-778-A
A BOARD, COMPLETE (KV-28WF3E)
*A-1632-779-A
A BOARD, COMPLETE (KV-28WF3K)
*A-1632-722-A
A BOARD, COMPLETE (KV-32WF3A)
*A-1632-773-A
A BOARD, COMPLETE (KV-32WF3B)
*A-1632-724-A
A BOARD, COMPLETE (KV-32WF3D)
*A-1632-774-A
A BOARD, COMPLETE (KV-32WF3E)
*A-1632-775-A
A BOARD, COMPLETE (KV-32WF3K)
11
*4-203-612-01
BRACKET, A-B
12
*A-1620-107-A
B BOARD, COMPLETE 
  (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
*A-1620-108-A
B BOARD, COMPLETE 
  (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
13
 X-4200-384-1   COVER ASSY, REAR 
  (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
14
 4-203-775-01   COVER, REAR 
  (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
 4-203-754-01   COVER, REAR 
  (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
15
 4-039-358-01   SCREW (4X16), (+) BV TAPPING
KV-28WF3/32WF3
REF. NO.              PART.NO                    DESCRIPTION                                     REMARK
REF. NO.              PART.NO                    DESCRIPTION                                     REMARK
6-2.  PICTURE TUBE
92
51
 X-4200-344-1
BEZNET ASSY             52-61
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
 X-4200-343-1
BEZNET ASSY 
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
52
 4-045-250-01
DAMPER
53
 X-4200-369-1
DOOR, ASSY     
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
54
 4-203-723-01
DOOR 
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
 4-203-723-21
DOOR 
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
55
 4-203-724-01
WINDOW, ORNAMENTAL 
56
 4-203-722-02
BUTTON, POWER 
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
 4-203-722-11
BUTTON, POWER 
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
57          4-202-964-01
SPRING 
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
         4-202-964-11
SPRING 
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
58          3-703-035-11
SHAFT, LID 
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
         4-202-555-01
SHAFT, DOOR 
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
59          4-042-940-21
UNIT, LOCK 
60
 4-203-739-01
GUIDE, LIGHT   
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
 4-203-739-11
GUIDE, LIGHT   
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
 
53
 
77
 
74
 
73
 
71
 
65
 
52
 
51
 
78
 
79
 
80
 
81
 
82
 
72
 
63
 
54
 
63
 
56
 
57
 
58
 
64
 
59
 
60
 
61
 
66
 
67
 
68
 
69
 
55
 
62
 
71
 
70
 
75
 
76
KV-28WF3/32WF3
REF. NO.              PART.NO                   DESCRIPTION                                     REMARK
REF. NO.              PART.NO                   DESCRIPTION                                     REMARK
The components identified by
shading and marked      are critical
for safety
Replace only with the part number
specified.
93
***************************************************************************************
61
*4-203-128-11
SHEET BLOTTING
62
 4-203-870-01
SUPPORTER, CRT 
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
 4-203-098-01
SUPPORTER, CRT 
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
63
 1-505-782-11
SPEAKER (7X13CM)
64       £  8-737-781-05
PICTURE TUBE (SD-284T)(W66LGY060X)
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
      £  8-735-037-05
PICTURE TUBE (SD-297)(W76LHT060X)
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
65       £  8-451-433-11
DEFLECTION YOKE (Y28GICM)
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
      £  8-451-485-11
DEFLECTION YOKE (Y32C2C2-M)
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
66         1-452-724-11
COIL, NA ROTATION (RT-165)
67       £  8-453-005-31
NECK ASSY, NA297-M3 
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
      £  8-453-011-11
NECK ASSY, NA299-M 
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
68
*A-1644-084-A
VM BOARD, COMPLETE 
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
*A-1644-089-A
VM BOARD, COMPLETE 
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
69
*A-1638-092-A
C BOARD, COMPLETE
70
 4-369-318-31
SPRING, TENSION 
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
 4-200-433-01
SPRING, EXTENSION
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
71
*4-203-390-01
CUSHION, DGC
72       £  1-411-893-11
COIL, DEMAGNETIC 
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
      £  1-416-450-11
COIL, DEMAGNETIC 
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
73
 4-203-769-01
DGC HOLDER (28”) 
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
 4-045-294-01
HOLDER, DGC    
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
74
 3-704-495-01
SPACER, DY
75
 4-200-693-01
HOLDER, HV CABLE
 (KV-28WF3A/28WF3B/28WF3D/28WF3E/28WF3K)
 4-203-022-01
HOLDER, HV CABLE
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
76       £  1-251-317-31
CAP, ASSY HIGH VOLTAGE
77
 4-203-216-01
PT-SCREW      
 (KV-32WF3A/32WF3B/32WF3D/32WF3E/32WF3K)
78
 4-308-870-00
CLIP, LEAD WIRE
79
 1-425-032-00
MAGNET, DISK; 10MM Ø
80
 1-452-094-00
MAGNET, ROTATABLE DISK; 15MM Ø
81
 X-4387-214-1
PERMALLOY ASSY, CORRECTION
82
 3-701-007-00
BAND BINDING
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