DOWNLOAD Sony KV-28CL10B Service Manual ↓ Size: 20.22 MB | Pages: 53 in PDF or view online for FREE

Model
KV-28CL10B
Pages
53
Size
20.22 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-28cl10b.pdf
Date
PREV: Sony KV-32FX68B Service Manual

Sony KV-28CL10B Service Manual ▷ View online

- 21 -
4-1. Electrical Adjustments
Service adjustments to this model can be performed using the
supplied remote Commander RM-946.
‘TT—’ will appear in the upper right corner of the screen.
Other status information will also be displayed.
3.
Press ‘MENU’ on the remote commander to obtain the following
menu on the screen.
4.
Move to the corresponding adjustment item using the
up or down arrow buttons on the Remote Commander.
5.
Press the right arrow button to enter into the required menu item.
6.
Press the ‘Menu’ button on the Remote Commander to quit the
Service Mode when all adjustments have been completed.
Note :
•
After carrying out the service adjustments, to prevent the
customer accessing the ‘Service Menu’ switch the TV set OFF
and then ON.
i+
5
+
(ON SCREEN                            (DIGIT 5)                                (VOLUME +)                                  (TV)
   DISPLAY)
SECTION 4 
CIRCUIT ADJUSTMENTS
How to enter into the Service Mode
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Turn on the main power switch and enter into the stand-by mode.
2.
Press the following sequence of buttons on the Remote
Commander.
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- 22 -
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
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- 24 -
5-1.  BLOCK DIAGRAMS (1)
LOW B
3
2
5
CN0001
J3401
(1/2)
63
XTAL OUT
RED
NVM WP
LED
L AUDIO
TO SPEAKERS
A 1/2 (              )
POWER SUPPLY,
DEFLECTION, VIDEO, AUDIO
+5V
STBY
1
4
CN2201
J2200
R AUDIO
64
XTAL IN
2
1
VCC
OUT
IC0002
REMOTE CONTROL
RECEIVER
+3.3V
STBY
6
5
2
3
-
+
+
-
7
1
IC2201
AUDIO AMP
MUTE
1
IN/INL
10
14
OUT/L
68
IC0401
AV LINK
69
R0 56
B10
7
6
5
2
G0 57
B0 58
IK 55
GREEN
BLUE
IK
EWD 17
VD- 18
VD+ 19
ABL 54
TO C BOARD
CN7003
CN3003
J3401
(2/2)
AGC
SCL
SDA
VIDEO
IC0004
SDA
6
SCL
5
7
WP
72 SDA
71 SCL
28 CVBS2/
CVBSY2
2
KEY
3
AGC
53 B2/UIN
1
MODE1
80 MODE2
52 G2/YIN
51 R2/VIN
38 -/C4
50 INSSW2
32 CVBS1
37 -/CVBS4Y4
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
BUFFER
Q3401,3411
A19
TU1001
MUTE SW
Q2012
V
J3402
STBY 70
6
67
77
S0001 - S0006
TO A 2/2
76
19
FREE  MAGENTA
VD+
V-PULSE
MAGENTA
9
10
CN5010
TO DF BOARD
CN8701
SIRCS
AVL OUT
AVL IN
34
5
INR
12
CVBS3
28
29
46
47
36
33
53
50
37
34
52
49
A1
B1
A2
B2
A3
B3
A6
B6
AUDIO R OUT 1
AUDIO R OUT 2
AUDIO R IN 1
AUDIO R IN 2
AUDIO L OUT 1
AUDIO L OUT 2
AUDIO L IN 1
AUDIO L IN 2
SC1 OUT R
SC2 OUT R
SC1 IN R
SC2 IN R
SC1 OUT L
SC2 OUT L
SC1 IN L
SC2 IN L
DACMR
DACML
SC3 IN L
SC3 IN R
L
R
OUT/R
IC0001
MICRO, VIDEO PROCESSOR,
ROM, AUDIO, VIDEO SWITCH
IC2001
MSP3410D
J7001
TO A BOARD
CN3003
IC7001
R.G.B. DRIVE
6
5
1
3
G IN
CN7003
C (     )
R.G.B. OUT
7
2
1
B IN
R IN
IK
NS CORRECT
1
2
3
5
9
8
7
IC8801
ROTATION AMP
1
2
3
7
6
10
8
9
3
6
CN8801
ROT (+)
ROT (-)
CN7006
CN7007
1
1
H1
G2
PICTURE  TUBE
TO ROTATION COIL
G OUT
B OUT
R OUT
TO A BOARD
CN5008
TO A BOARD
CN5009
1
3
H- DY+
CN8403
D3 (       )
4:3 SWITCHING
4
5
H- DY-
H- DY-
V- DY-
RELAY SWITCH
Q8401,Q8402
2
H-  DY+
6
V- DY+
TO A BOARD
CN5001
1
3
H- DY+
CN8402
4
5
H- DY-
H- DY-
V- DY-
2
H-  DY+
6
V- DY+
CN8401
TO D2 BOARD
CN8302
T8401
+8V
6
8
10
5
4
2
1
RY8401
DY ASSY
V DY
V- DY+
V- DY-
H DY
H- DY+
H- DY-
SW
1
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