DOWNLOAD Sony KV-28LS36B Service Manual ↓ Size: 11.06 MB | Pages: 56 in PDF or view online for FREE

Model
KV-28LS36B
Pages
56
Size
11.06 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-28ls36b.pdf
Date
PREV: Sony KV-29FX64K (serv.man2) Service Manual

Sony KV-28LS36B Service Manual ▷ View online

- 21 -
Sub Colour Adjustment
1.
Receive a PAL colour bar signal.
2.
Connect an oscilloscope to Pin 5 of CN3003 [A Board].
3.
Enter into the ‘Service’ service menu.
4.
Adjust the ‘Sub Colour’ data so that the Cyan, Magenta and
Blue colour bars are of equal levels as indicated below.
Same Level
B-Out Waveform
1.
Enter into the ‘Geometry’ service menu.
2.
Select and adjust each item in order to obtain the optimum image.
Deflection System Adjustment
V SIZE
V LIN
S CORRECTION
V CENTRE
H CENTRE
H SIZE
PIN AMP
PIN PHASE
CORNER PIN
 V ANGLE
Sub Brightness Adjustment
1.
Input a Monoscope pattern.
2.
Press ‘TEST’ ‘TEST’ 13 on the Remote Commander.
3.
Adjust the ‘Sub-Brightness’ data so that there is barely a
difference between the 0 IRE and 10 IRE signal levels.
1.
Input a video signal that contains a small 100% white area on a
black background.
2.
Connect an digital voltmeter to Pin 10 of J7001 [C Board].
3.
Adjust the Sub-Contrast [‘TT11’] to obtain a voltage of
105 +/- 5V.
Sub Contrast Adjustment
Y
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- 23 -
5-1.  BLOCK DIAGRAMS (1)
LOW B
3
4
2
CN001
J401
(1/2)
77
63
5
7
4
3
2
1
5
4
RELAY
SWITCH
Q601
T603
SRT
16
15
17
18
18
16
1
2
15
8
11
12
IC602
ERROR AMP
1
2
PH601
ISOLATOR
+B
D638
RECT
AUDIO
VCC
+B
LOW B
3.3V REG
H-OUT
Q533
STBY
+3.3V
IC608
7
5
IC501
V OUTPUT
3
1
VD+
BOOST
REF
OUT
PIN OUT
Q532
6
5
4
3
2
1
T511
FBT
FV
ABL
12
3
4
5
6
13
8
9
11
10
7
V- DY+
V- DY-
H- DY+
H- DY+
TO C BOARD
CN707
H1
200V
TO PICTURE
TUBE
2
3
6
5
+
-
+
-
1
7
IC531
PIN CORRECTION
EWD
HP
PROTECT
IN
VP
VD-
4
1
2
3
T531
HDT
IC609
STANDBY
POWER
HD
C
D
T602
D632
RECT
IC001
MICRO,
VIDEO PROCESSOR,
ROM, AUDIO,
VIDEO SWITCH
CN606
CN003
VD
VG(H)
VS
HV
CN508
XTAL OUT
NVM WP
L AUDIO
TO SPEAKERS
A (                )
POWER SUPPLY, DEFLECTION,
VIDEO, AUDIO
IC601
D514
-15V RECT
L
1
2
1
3
DGC
DGC
DGC
CHECK 1
CN603
CN602
2
1
H- DY-
H- DY-
TO VM BOARD
CN1702
+8V
D608
RELAY
RY601
MAIN RECT
D601
1
3
4
6
7
8
CT
VSENSE
RT
TIMER
SS
VCI
12
VG(L)
Q606
Q607
6
5
4
7
3
LOWB
D624
D618
D619
VM VCC
OCP DETECT
Q602,603.604
1
4
CN1201
R AUDIO
64
XTAL IN
40
AUDIO MUTE
5
AUD OUT
78
+3.3V STBY
6
5
2
+
-
+
-
7
1
+5V STBY
IC1201
AUDIO AMP
MUTE
1
IN/INL
10
3
/OUT W
H-DRIVE
Q535
68
IC401
AV LINK
+5V STBY
69
B10
2
EWD
17
VD-
18
VD+
19
ABL 54
74
TO VM BOARD
CN1701
J401
(2/2)
NSC CORRECT
ROT COIL
AGC
SCL
SDA
VIDEO
IC004
SDA
6
SCL
5
7
WP
71 SCL
72 SDA
28
CVBS2/
CVBSY2
3
AGC
53 B2/UIN
1
MODE1
80 MODE2
52 G2/YIN
51 R2/VIN
38 -/C4
50 INSSW2
32 CVBS1
37 -/CVBS4Y4
34 CVBS3
A8
A11
A7
B8
A15
A16
B20
B15
A20
BLUE IN
MODE1
MODE2
GREEN IN
RED IN
C2 IN
BLK
V IN 1
Y/V IN 2
TU101
MUTE SW
Q212
AUDIO L
STBY
70
2
FB
D513
+15V RECT
1
3
D625
14
OUT/L
12
/OUT R
6
/IN W
L OUT
L IN
R IN
R OUT
TO H2
BOARD
CN908
CN1200
3
CN1202
WOOFER
5
SDA
CS
SCL
AGC
IC201
MSP3410D-PP-B4
SC1 OUT R
37
SC1 OUT L
36
63
XTAL OUT
62
XTAL IN
47
SC3 IN R
46
SC3 IN L
31
DACM SUB
/C3
35
KEY
2
LED
6
SIRCS
67
CN510
7
6
KEY
LED
SIRCS
TO F2 BOARD
CN2150
A1
B1
A3
B3
SC1 OUT L
SC1 OUT R
SC2 OUT L
SC2 OUT R
SC2 OUT R
34
SC2 OUT L
33
R
AUDIO R
J404
L
CVBS/Y
KEY
R
A19
VIDEO
CN406
TO H2 BOARD
CN906
1
4
6
8
9
6
5
3
2
C
CS
6
7
TO
F2 BOARD
CN2603
9
OCP
TO D2 BOARD
CN8801
SW
SMART
CN512
DEF SW
75
2
6
D614
MAIN RECT
1
DF
CN509
3
H SYNC
CN503
CHECK 2
19
76
58
57
56
55
1K
R
B
G
7
6
5
1
TO C BOARD
CN703
7
9
MAGENTA
V-PULSE
4
CN405
AVL
3
8
H DY-
AC IN
AC IN
IC604
DC REGULATOR
IC603
DC REGULATOR
1
0
1
0
+5V
CN501
TO D3 BOARD
CN2803
1
0
1
TO VM BOARD
CN1809
AVL OUT
AVL IN
Q1231
Q1231
-15V
+B
- 24 -
5-2.  CIRCUIT BOARD LOCATION
5-3.  SCHEMATIC DIAGRAMS AND 
         PRINTED WIRING BOARDS
Note :
•
All capacitors are in µF unless otherwise noted.
•
pF : µµF 50WV or less are not indicated except for 
electrolytic types.
•
Indication of resistance, which does not have one for 
rating electrical power, is as follows.
Pitch : 5mm
Electrical power rating : 1/4W
•
Chip resistors are 1/10W
•
All resistors are in ohms.
k = 1000 ohms, M = 1000,000 ohms
•
: nonflammable resistor.
•
: fusible resistor.
•
: internal component.
•
: panel designation or adjustment for repair.
•
All variable and adjustable resistors have 
characteristic curve B, unless otherwise noted.
•
All voltages are in Volts.
•
Readings are taken with a 10Mohm digital mutimeter.
•
Readings are taken with a color bar input signal.
•
Voltage variations may be noted due to normal production
tolerences.
•
:  B  +  bus.
•
: B - bus.
•
: RF signal path.
•
: earth - ground.
•
: earth - chassis.
Reference Information
RESISTOR
RN
: METAL FILM
RC
: SOLID
FPRD
: NON FLAMMABLE CARBON
FUSE
: NON FLAMMABLE FUSIBLE
RS
: NON FLAMMABLE METAL OXIDE
RB
: NON FLAMMABLE CEMENT
RW
: NON FLAMMABLE WIREWOUND
: ADJUSTMENT 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
Les composants identifiés par une trame et
par une marque      sont d'une importance
critique pour la sécurité. Ne les remplacer
que par des pièces de numéro spécifié.
specified.
Note :
The components identified by shading
and marked      are critical for safety.
Replace only with the part numbers 
specified in the parts list.
Note :
CVM Board
A Board
S1 Board
VM
C
H
D1
A
J
A2
N
D
A1
D2
C
A
5-1.  BLOCK DIAGRAMS (2)
NECK ASSY
CN1718
Q.P.
TO
A BOARD
CN503
1
2
3
4
Q.P.+
Q.P.-
TO
A BOARD
CN510
VM (            )
VELOCITY MODULATION,
DYNAMIC FOCUS AND DQP
3
4
1
2
+135V
T1901
CN1809
1
TO A BOARD
CN509
SWITCH
Q1902
Q1903
SWITCH
Q1906
Q1907
7
1
2
7
6
3
1
5
SWITCH
Q1901
1
0
NS CORRECT
9V
6
9
1
10
7
CN1701
IC1701
REGULATOR
IC1902
IC1901
V PULSE
LOW B
+135V
MAGENTA
CN1702
+15V PULSE
VM Board
C Board
A Board
H2 Board
F2 Board
D2 Board
F3 Board
D3 Board
H2
PICTURE  TUBE
CN703
R
G
B
IK
TO A BOARD HV
T511
R
G
B
H
V
TO A BOARD
CN003
7
6
5
2
+8V
1
3
CN1801
ROT -
ROT +
+
-
IC1801
ROTATION AMP
6
7
5
+
-
2
1
3
TO
ROTATION
COIL
NS CORRECT
1
C (       )
R, G, B OUT
3
1
5
2
R IN
G IN
B IN
IK
7
9
8
R
G
B
IC701
RGB DRIVE
10
9
8
6
J701
CN707
1
TO A
BOARD
CN508
1
2
F2
 
(        )
POWER SWITCH,
SIRCS
CN2601
6
CN2150
AC IN
AC IN
S2601
POWER
AC OUT
AC OUT
SWITCH
Q2150
Q2151
D2150
SIRCS
REGULATOR
IC2150
+5V
SIRCS
LED
STBY +5V
7
2
TO A BOARD
CN405
CN2603
1
5
TO A BOARD
CN606
TO F3
BOARD
CN3603
CN8802
TO A BOARD
CN512
HDY-
IC8801
PHOTO-COUPLER
8
2
6
SWITCH
Q8801
SWITCH
Q8802
Q8803
SW
CN8801
D2 (       )
SMART MODE
DEFLECTION
SMART
SW
TO D3 BOARD
CN2801
1
1
3
H- DY+
CN2802
D3 (       )
4:3 SWITCHING
4
5
H- DY-
H- DY-
V- DY-
RELAY SWITCH
Q2801,Q2802
2
H-  DY+
6
V- DY+
TO A BOARD
CN501
1
3
H- DY+
CN2803
4
5
H- DY-
H- DY-
V- DY-
2
H-  DY+
6
V- DY+
CN2801
TO D2 BOARD
CN8802
T2801
+8V
6
8
10
5
4
2
1
RY2801
DY ASSY
V DY
V- DY+
V- DY-
H DY
H- DY+
H- DY-
SW
1
TO A BOARD
CN406
TO A BOARD
CN1200
VIDEO
HEADPHONES
R
L
WOOFER MUTE
CN908
R IN
R OUT
L OUT
CN906
AUDIO L
AUDIO R
Y/CVBS
C
1
2
3
5
6
9
4
2
J900
1
2
4
3
Y/C
J901
H2(        )
AUDIO IN, Y/C IN,
HEADPHONE IN
J900
6
L IN
KEY
1
S0900, S0901,
S0902
1
2
F3
 
(        )
AC INPUT, FUSE
CN3601
2
1
CN3603
AC IN
AC IN
FH3601
F3601
VARISTOR
VD3601
AC OUT
AC OUT
T3602
TO F2
BOARD
CN2601
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