Sony KV-28LS65B Service Manual ▷ View online
- 21 -
4-1. Electrical Adjustments
Service adjustments to this model can be performed using the
supplied remote Commander RM-934.
supplied remote Commander RM-934.
SECTION 4 CIRCUIT ADJUSTMENTS
3.
Press 99999. All three LED’s should light.
The remote commander is now set to Service Mode.
The remote commander is now set to Service Mode.
4.
To return the remote commander to normal operation mode
repeat steps 1. and 2. then press 00000. All three LED’s
should light.
The remote commander is now set to normal mode.
repeat steps 1. and 2. then press 00000. All three LED’s
should light.
The remote commander is now set to normal mode.
Programming the Remote Commander for
Operation in Service Mode
Operation in Service Mode
Setting the TV into Service Mode
1.
Program the remote commander for operation in Service
Mode as described above.
Mode as described above.
2.
Turn on the TV main power switch.
3.
Press the video standby button
on the remote
commander twice.
‘TT ’ will appear in the upper right corner of the screen.
Other status information will also be displayed.
‘TT ’ will appear in the upper right corner of the screen.
Other status information will also be displayed.
4.
Press ‘MENU’ on the remote commander to obtain the
following menu on the screen.
5.
Move to the corresponding adjustment item using the
up or down arrow buttons on the Remote Commander.
up or down arrow buttons on the Remote Commander.
6.
Press the right arrow button to enter into the required menu item.
7.
Press the ‘Menu’ button on the Remote Commander to quit the
Service Mode when all adjustments have been completed.
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.
customer accessing the ‘Service Menu’ switch the TV set
OFF and then ON.
·
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1
1.
Press the VCR/TV/DVD button until the
TV LED lights.
TV LED lights.
2.
Press and hold the yellow button for
approx. 5 seconds until the TV LED
flashes quickly.
approx. 5 seconds until the TV LED
flashes quickly.
- 22 -
Sub Colour Adjustment
1.
Receive a PAL colour bar signal.
2.
Connect an oscilloscope to Pin 6 of CN7001 [A Board].
3.
Program the Remote Commander for operation in Service Mode.
[ See Page 21 ].
[ See Page 21 ].
4.
Adjust the ‘Sub Colour’ [ Using ‘VIDEO’ ‘VIDEO’ ‘12’ ] so
that the Cyan, Magenta and Blue colour bars are of equal levels
as indicated below.
that the Cyan, Magenta and Blue colour bars are of equal levels
as indicated below.
Same Level
B-Out Waveform
Sub Brightness Adjustment
1.
Input a Monoscope pattern.
2.
Program the Remote Commander for operation in Service Mode.
[ See Page 21 ].
[ See Page 21 ].
3.
Press ‘VIDEO’ ‘VIDEO’ 13 on the Remote Commander.
4.
Adjust the ‘Sub-Brightness’ data so that there is barely a
difference between the 0 IRE and 10 IRE signal levels.
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.
black background.
2.
Connect an digital voltmeter to Pin 10 of J7375 [C Board].
3.
Program the Remote Commander for operation in Service Mode.
[ See Page 21 ].
[ See Page 21 ].
4.
Adjust the Sub-Contrast [ Using ‘VIDEO’ ‘VIDEO’ ‘11’ ] to
obtain a voltage of 105 +/- 5V.
obtain a voltage of 105 +/- 5V.
Sub Contrast Adjustment
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- 23 -
1.
Program the Remote Commander for operation in Service Mode.
[ See Page 21 ] and enter into the ‘Geometry’ service menu.
[ See Page 21 ] and 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
AFC BOW
V POSITION
H POSITION
H SIZE
PIN AMP
TRAPEZIUM
UP CORNER PIN
AFC ANGLE
LO CORNER PIN
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Test Mode 2 is available by rogramming the Remote Commander for
operation in Service Mode [ As shown on Page 21 ] then pressing the
‘VIDEO’ button twice, OSD ‘TT’ appears. The functions described
below are available by selecting the two numbers. To release the ‘Test
mode 2’, press 00, 10, 20 ... twice or switch the TV set into Stand-by
mode. In ‘TT Menu’ mode, it is possible to remove the Menu from
the screen by pressing the Speaker Off button once. Pressing the
Speaker OFF button a second time will cause the Menu to reappear.
The function is kept even when the menu is not displayed on
screen !!.
operation in Service Mode [ As shown on Page 21 ] then pressing the
‘VIDEO’ button twice, OSD ‘TT’ appears. The functions described
below are available by selecting the two numbers. To release the ‘Test
mode 2’, press 00, 10, 20 ... twice or switch the TV set into Stand-by
mode. In ‘TT Menu’ mode, it is possible to remove the Menu from
the screen by pressing the Speaker Off button once. Pressing the
Speaker OFF button a second time will cause the Menu to reappear.
The function is kept even when the menu is not displayed on
screen !!.
4-2. TEST MODE 2:
7
2
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- 25 -
5-1. BLOCK DIAGRAMS (1)
VM
5
4
1
CN7442
QP (+)
QP (-)
VM AMPLIFIER
BUFFER Q7401
VM AMPLIFIER
BUFFER Q7400
VM AMPLIFIER
BUFFER Q7405
VM AMPLIFIER
BUFFER Q7403
VM AMP
OUTPUT Q7407
VM AMP
OUTPUT Q7406
4
7
8
2
3
VM
VM
1
QP (+)
QP (+)
QP (-)
QP (-)
VM ( )
VELOCITY
MODULATION
+9V
CN7444
QP-
QP+
VM
NECK ASSY
TO A BOARD
CN7000
RIGHT OUT
CN2501
AUDIO PROCESSOR
IC2000
A 1/2 ( )
VIDEO AND AUDIO PROCESSORS,
AUDIO OUTPUT, VERTICAL DEFLECTION
60 MONO IN (AM)
67 IF INI
SCL
3
SDA
37
56
SC1 OUT L
SC1 IN L
2
SC1 OUT R
57 SC1 IN R
36
27
28
30
TO
SPEAKERS
SPEAKER OUT R
SPEAKER OUT L
SUBWOOFER OUT
HEADPHONE
AMPLIFIER
IC2001
5
3
1
7
R
1
4
CN1000
TO A BOARD
SHEET 2
71
72
RIGHT IN
LEFT OUT
LEFT IN
BLUE IN 1
GREEN IN 1
RED IN 1
VIDEO OUT 1
VIDEO IN 1
RIGHT OUT
34
53
SC2 OUT L
SC2 IN L
SC2 OUT R
54 SC2 IN R
33
1
3
2
6
11
7
15
20
19
RIGHT IN
LEFT OUT
LEFT IN
BLUE IN 2
GREEN IN 2
RED IN 2
VIDEO OUT 2
VIDEO IN 2
CN1001 (1/2)
XTAL IN
XTAL OUT
TU100
SCL
SDA
FM/AM
QSS
VIDEO
SCL
SDA
RIGHT OUT
50 SC3 IN L
51 SC3 IN R
1
3
2
6
19
20
RIGHT IN
LEFT OUT
LEFT IN
VIDEO OUT 2
V/Y IN 3
CN1001 (2/2)
KEY
47
48
1
6
4
9
LEFT
Y/CVBS FRONT
RIGHT
CN2000
FR IN L
FR IN R
LED
2
1 SIRCS
CN0103
BACKEND: DEFLECTION -
RGB PROCESSOR
IC7002
33 YSYM 2
34 B2 IN
G2 IN
36 R2 IN
35
30
26
R OUT
B OUT
FS 100
B TXT
G TXT
R TXT
52 Y1 IN
U IN 100
28
G OUT
53 CB1 IN
54 CR1 IN
HS IN
60 VS IN
59
V IN 100
H SYNC
V SYNC
PIP Y
56 Y2 IN
PIP CB
57 CB2 IN
PIP CR
58 CR2 IN
63
EXTRA PARA
64
DF PARA
1
EW OUT
17
HD OUT
18
HP IN
20
X RAY IN
5
VDP OUT
6
VDN OUT
16
VPROT
45
VM OUT
AUDIO AMPLIFIER
IC2500
5
IN R
1
IN L
IN W
9
MUTE W
6
12
3
OUT R
OUT W
RIGHT
LEFT
WOOFER
10 MUTE
14
OUT L
MP PARA
DF PARA
E/W
H DRIVE
AFC PULSE
X RAY
PART OF
V PROT
Q5400
Q5401
Q5401
V OUT IC5400
1
7
DAC IC5103
3
7
DF PHOCUS PHASE
M PIN CONT
OP. AMP
IC5104
1
4
ROT -
ROT+
5
3
6
OP. AMP IC5301
7
6
COMPARATOR IC5302
1
VM
2
8
AFC PULSE
X RAY
6
5
3
1
H DRIVE
E/W
DF PARA
MP PARA
1
6
B-
B+
5
4
3
2
G+
G-
R+
R-
3
H CENTRE
4
2
M PIN CONT
DF DRIVE
1
3
ROT-
ROT+
1
WOOFER
2
6
R OUT
L OUT
5
L IN
3
R IN
CN2502
TO
SUBWOOFER
TO H2 BOARD
CN2908
CN2500
CN5100
TO
ROTATION
COIL
CN5002
TO D BOARD
CN8810
CN7001
TO C BOARD
CN7301
TO D BOARD
CN8620
TO VM BOARD
CN7442
R OUT
L OUT
J2000
L
CN7000
CN5801
TO F2 BOARD
CN0981
TO H2 BOARD
CN2906
Y IN 100
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