Sony KV-SZ292M88 Service Manual ▷ View online
– 36 –
KV-SZ292M88/M91
RM-GA002
4-3.
PICTURE QUALITY ADJUSTMENT
4-3-1. P MAX / CONTRAST ADJUSTMENT
1. Set TV to Video mode.
2. Set Picture mode to “CUSTOM”.
3. Input PAL 100% Color Bar to TV set (OTHER model)
2. Set Picture mode to “CUSTOM”.
3. Input PAL 100% Color Bar to TV set (OTHER model)
and NTSC 75% Color Bar (NTSC model).
4. Set the following condition:
Picture 100%, Color 0%, Brightness 50%.
5. Connect an oscilloscope to pin 10 KR of J751.
6. Go to service mode and set PICT 003 "PWL" to 00h and
6. Go to service mode and set PICT 003 "PWL" to 00h and
WHBL 014 "BLBG" to 01h and PICT 002 "SOC" to 03h.
7. Select SADJ 000 “PMAX” with 1 and 4 button of the
commander then adjust KR with spec with 3 and 6
button until reach the spec below:
button until reach the spec below:
Add 5 steps to "PMAX" - (after KR) adjustment.
8. Set TV to TV mode and repeat steps from 2 to 7.
9. Select Wide mode to “ON” in TV and Video mode and
9. Select Wide mode to “ON” in TV and Video mode and
write “PMAX” data -6 steps
(for models with V-Compression features only).
(for models with V-Compression features only).
10. Press [MUTING]
t - to write the data.
11. Set “PWL”, “BLBG” and "SOC" back to initial data.
(“PWL” : 01h, “BLBG” : 00h and "SOC" : 00h).
12. Finally press [MUTING]
t - to write the data.
4-3-2. WHTL ADJUSTMENT
(This adjusrment must be done after PMAX
adjustment)
adjustment)
1. Set TV to Video mode.
2. Input PAL Color Bar to TV set.
3. Set the following condition:
2. Input PAL Color Bar to TV set.
3. Set the following condition:
Picture 100%, Color 0%, Brightness 50%.
4. Set WHBL 010 "SBRT" to 35, WHBL 017 "BLBG" to 01.
(Confirm PICT 002 "SOC" to 00 and PICT 003 "PWL" to 01)
5. Select PICT 004 "WHTL" with 1 and 4 button of the
commander then adjust KR with 3 and 6 button until
reach the spec below:
reach the spec below:
• In case that WHTL already 04, KR still lower than
116Vpp, set WHTL to 04.
• In case that WHTL already 00, KR still higher than
116Vpp, set WHTL to 00.
6. Press [MUTING]
t - to write the data.
7. Set "BLBG" and "SBRT" back to initial data.
("BLBG" : 00 and "SBRT" : 33)
8. Finally press [MUTING]
t - to write the data.
4-3-3. SUB COLOR ADJUSTMENT
1. Set TV to Video mode.
2. Set Picture mode to “CUSTOM”.
3. Input PAL 100% Color Bar to TV.
4. Set the following condition:
2. Set Picture mode to “CUSTOM”.
3. Input PAL 100% Color Bar to TV.
4. Set the following condition:
Picture 100%, Color 50%, Brightness 50%, Hue 50%
and Sharpness 50%
and Sharpness 50%
5. Set PICT 006 “WTS” to 00h.
6. Connect an oscilloscope to pin 2 (B output) of CN004 A
6. Connect an oscilloscope to pin 2 (B output) of CN004 A
Board.
7. Select SADJ 004 “SCOL” with 1 and 4 button of the
commander then adjust with 3 and 6 so that
VB2=VB3=VB4 (for PAL) then write in the data as below:
VB2=VB3=VB4 (for PAL) then write in the data as below:
Add 11 steps to “SCOL” (PAL) – 25"
Add 11 steps to “SCOL” (PAL) – 29"
Add 12 steps to “SCOL” (DVD-50Hz) – 25" and 29"
Add 11 steps to “SCOL” (PAL) – 29"
Add 12 steps to “SCOL” (DVD-50Hz) – 25" and 29"
8. Copy "SCOL" 50(PAL) video data to "SCOL" 50
(SECAM) video.
9. Set TV to TV mode and repeat steps from 2 to 7
(Omit the offset data to DVD-50Hz)
10. Copy SCOL 50(PAL) TV data "SCOL" 50(SECAM) TV.
11. For NTSC mode, input NTSC 75% Color Bar to TV and
11. For NTSC mode, input NTSC 75% Color Bar to TV and
repeat step no. 4 to 6.
12. Select SADJ 004 “SCOL” with 1 and 4 button of the
commander then adjust using 3 and 6 so that
VB1=VB4 then write in the data as below:
VB1=VB4 then write in the data as below:
Add 11 steps to SCOL (NTSC) – 25"
Add 11 steps to SCOL (NTSC) – 29"
Add 12 steps to SCOL (DVD-60Hz) – 25" and 29"
Add 11 steps to SCOL (NTSC) – 29"
Add 12 steps to SCOL (DVD-60Hz) – 25" and 29"
13. Set TV to TV mode and repeat steps no 4 to 6.
14. Select SADJ 004 "SCOL" with 1 and 4 button.
14. Select SADJ 004 "SCOL" with 1 and 4 button.
Add 13 steps to SCOL (NTSC)-25" and 29".
15. Then press [MUTING]
t - to write the data.
16. Set PICT 006 “WTS” back to original data.
VB2 = VB3 = VB4 (for PAL)
VB1
VB2 VB3 VB4
VB1 = VB4 (for NTSC)
(Difference is within 70mV)
VB1 VB2 VB3 VB4
KR
Black
KR
PAL
NTSC
110
2Vpp
145
2Vpp
KR
Black
KR = 116
±
2Vpp
– 37 –
KV-SZ292M88/M91
RM-GA002
4-4.
GEOMETRY ADJUSTMENT
4-4-1. H-TRAPEZOID ADJUSTMENT
1.
Receive cross hatch/dot signal.
2.
Adjust RV1800 on CV Board to make H-Trapezoid
distortion best/to obtain the center illustration shown in
Table 1.
distortion best/to obtain the center illustration shown in
Table 1.
4-4-2. NORMAL MODE 50Hz / 60Hz
1.
Input PAL Special Color Bar (SPCB) or PAL Monoscope
(OTHER model) and Video mode or NTSC Monoscope
(NTSC model) signal using a pattern generator.
(OTHER model) and Video mode or NTSC Monoscope
(NTSC model) signal using a pattern generator.
2.
Set Wide Mode to “OFF”.
3.
Select Category items listed in Table 1.
4.
Raise and Lower the data value using 3 and 6 button
to obtain the center illustration.
to obtain the center illustration.
5.
Press [MUTING]
t - to save the data into the memory.
6.
For Korea models, copy adjusted 60Hz to 50Hz. Add 6
steps to 50Hz “HPOS” and 3 steps to 50Hz “HSIZ” and
save the data.
steps to 50Hz “HPOS” and 3 steps to 50Hz “HSIZ” and
save the data.
Category
Function
Illustration
GEOM 000
H Position
(HPOS)
GEOM 001
H Parallelogram
(HPAR)
GEOM 002
H Bow
(HBOW)
GEOM 003
Linearity
(VLIN)
GEOM 005
EW Width
(HSIZ)
Note: Adjust HSIZ
16.6 + -(SPCB) _ 50Hz
14.8 + -(PAL Monoscope) _ 50Hz
15.3 + -(NTSC Monoscope) _ 60Hz
14.8 + -(PAL Monoscope) _ 50Hz
15.3 + -(NTSC Monoscope) _ 60Hz
GEOM 006
EW Parabola/Width
(EWPW)
GEOM 007
EW Upper Corner
(UCOP)
Parabola
GEOM 008
EW Lower Corner
(LCOP)
Parabola
GEOM 009
EW Trapezoid
(EWTZ)
GEOM 011
V-Amplitude
(VSIZ)
Note: Adjust VSIZ
12.6 + -(SPCB) _ 50Hz
11.3 + -(PAL Monoscope) _ 50Hz
11.7 + -(NTSC Monoscope) _ 60Hz
11.3 + -(PAL Monoscope) _ 50Hz
11.7 + -(NTSC Monoscope) _ 60Hz
GEOM 012
S-Correction
(SCOR)
GEOM 013
V-Shift
(VPOS)
Table 1
VB1
VB2
VB3 VB4
80mV
4-3-4. SUB HUE ADJUSTMENT
1. Set TV to Video mode.
2. Input NTSC 3.58 Color Bar to TV set.
3. Set the following condition:
2. Input NTSC 3.58 Color Bar to TV set.
3. Set the following condition:
Picture 100%, Color 50%, Brightness 50%, Hue 50%,
Sharpness 50%.
Sharpness 50%.
4. Connect oscilloscope to pin 2 (B output) of CN004.
5. Set to service mode and select SADJ 001 “SHUE” or
5. Set to service mode and select SADJ 001 “SHUE” or
YC 013 "TINT" with 1 and 4 button then adjust to
VB1=VB2=VB3=VB4 using 3 and 6 button.
VB1=VB2=VB3=VB4 using 3 and 6 button.
6. Press [MUTING]
t - to write the data.
7. Select TV channel with NTSC 3.58 and perform step 3
to 6.
8. For single system model with NTSC 4.43, select TV
channel with NTSC 4.43 and perform step 3 to 6.
9. Once adjustment is completed in Video mode, carry out
adjustment in DVD mode. Input NTSC 3.58 Color Bar.
10. Connect oscilloscope to pin 2 (B output) of CN004.
11. Set to service mode and adjust service item YC 013
11. Set to service mode and adjust service item YC 013
“TINT” with 1 and 4 button until VB1=VB2=VB3=VB4.
12. Press [MUTING]
t - to write the data.
Illustration 1
The highest level of VB1, VB2, VB3 and VB4 should
be aligned at the same line.
The ideal difference between VB2 and VB3 is within + 80mV.
4-4-3. WIDE MODE 50Hz / 60Hz
(V Compression Adjustment)
(V Compression Adjustment)
1.
Input PAL Special Color Bar (SPCB) (OTHER model) or
Monoscope NTSC (NTSC model) signal using a pattern
generator.
Monoscope NTSC (NTSC model) signal using a pattern
generator.
2.
Set Wide Mode to “ON”.
3.
Copy NORMAL MODE 50Hz/60Hz adjusted data for the
following items:-
GEOM: 011 VSIZ, 010 VSLP, 012 SCOR and 003 VLIN
following items:-
GEOM: 011 VSIZ, 010 VSLP, 012 SCOR and 003 VLIN
4.
Select Category items listed in Table 1 except GEOM:
003 VLIN, 010 VSLP, 011 VSIZ, and 012 SCOR and
adjust the data to obtain the center illustration.
003 VLIN, 010 VSLP, 011 VSIZ, and 012 SCOR and
adjust the data to obtain the center illustration.
5.
Press [MUTING]
t - to save the data into the memory.
6.
For Korea models, copy adjusted 60Hz to 50Hz. Add 6
steps to 50Hz “HPOS” and save the data.
steps to 50Hz “HPOS” and save the data.
– 38 –
KV
-SZ292M88/M91
-SZ292M88/M91
RM-GA002
SECTION 5
DIA
GRAMS
5-1.
BLOCK DIA
GRAM
VIF
SAW
SIF
SAW
MAIN
Power
Supply
Stdby
Power
FSS TUNER
Y
U
V
L
R
24.576MHz
DVD in
Rear AV in
Front AV in
Mon out
* FM Radio Function (STEREO model)
Mon
out
AV1
AV3
in
AV2
in
DVD
in
AC in ~
110 ~ 220V
CISPR/
PFC
Relay
LOW B
Stdy 3.3
AUDIO VCC
L
Audio Amp
ATT
NVM
V Def
H Def
DF
DQP
H Def
DF
DQP
VM
RGB Amp
Rot Amp
LCC Amp
6W
R
6W
L,R
H
P
P
EW, Hd
L,R
V+, V-
PWM
RGB
SIRCS
KEY
buttons
PLL
I/O Port
I/O Port
VIF & SIF
POWER
Color
Decoder
YUV
Processor
Jungle
RGB
A
D
C
C
D
A
C
Stereo,
DSP
Micro
Text
CC & V-chip
LED
+B
– 39 –
KV-SZ292M88/M91
RM-GA002
5-2. CIRCUIT BOARDS LOCATION
5-3. SCHEMATIC DIAGRAM INFORMATION
Note:
•
•
All capacitors are in
µ
F unless otherwise noted.
•
All electrolytic capacitors are rated at 50V unless otherwise
noted.
noted.
•
All resistors are in ohms.
k
k
Ω
= 1000
Ω
, M
Ω
= 1000k
Ω
•
Indication of resistance which does not have rating electrical
power is as follows.
power is as follows.
Pitch: 5 mm
Rating electrical power 1/4W (CHIP: 1/10W)
Rating electrical power 1/4W (CHIP: 1/10W)
•
: nonflammable resistor.
•
: fusible resistor.
•
¢
: internal component.
•
: panel designation or adjustment for repair.
•
All variable and adjustable resistors have characteristic curve
B unless otherwise noted.
B unless otherwise noted.
•
Readings are taken with a color-bar signal input.
no mark
no mark
: Common
(
)
: PAL
[
]
: NTSC 3.58
•
Readings are taken with a 10M
Ω
digital multimeter.
•
Voltage are dc with respect to ground unless otherwise
noted.
noted.
•
Voltage variations may be noted due to normal production
tolerances.
tolerances.
•
All voltage are in Volt.
•
✽
: Cannot be measured.
•
Circled numbers are waveform references.
•
: B +bus.
•
: B –bus.
•
k
: signal path.
Note: The reference number which starts with Wxxx
(eg: W003) indicates a wire to wire connection.
Note: Components marked as XX are not fitted on this
model.
Reference information
RESISTOR
RESISTOR
: RN
METAL FILM
: RC
SOLID
: FPRD
NONFLAMMABLE CARBON
: FUSE
NONFLAMMABLE FUSIBLE
: RS
NONFLAMMABLE METAL OXIDE
: RB
NONFLAMMABLE CEMENT
: RW
NONFLAMMABLE 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
Note:
The component identified by shading and
mark
mark
!
are critical for safety. Replace only
with part number specified.
Note: "A" board schematic diagram is divided into 7
blocks. Each block is named by its function and
block "number". eg: Processor (Block 001).
Joint connection between boards can be identified
using the block number followed by the grid's guide.
block "number". eg: Processor (Block 001).
Joint connection between boards can be identified
using the block number followed by the grid's guide.
eg:-
<
IIS_WS
002:8F
Meaning: Block 001 joint IIS_WS is connected to
Block 002 joint IIS_WS located at grid 8F.
Block 002 joint IIS_WS located at grid 8F.
A Board
CV Board
PF Board
(KV-SZ292M91)
(KV-SZ292M91)
H2 Board
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