KV-SW212N50 - Sony TV Service Manual (repair manual). Page 31

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KV-SW212N50/N63
   RM-GA002
3-3.
PICTURE QUALITY ADJUSTMENT
3-3-1. P MAX/CONTRAST ADJUSTMENT
1. Set TV to Video mode.
2. Set Picture mode to "CUSTOM".
3. Input PAL 100% CB to TV set (OTHERS), NTSC 75%
CB (NTSC model).
4. Set PICT 002 "SOC" to 03, PICT 003 "PWL" to 00h and
WHBL 017 "BLBG" to 01h.
5. Set the following condition:
PICTURE 100%, COLOR 0%, BRIGHTNESS 50%
6. Connect an oscilloscope to pin 4 (R Output) of CN004.
7. Select SADJ 000 "PMAX" with 1 and 4 button of the
commander then adjust VR with spec with 3 and 6
until reach the spec below:
1.90 ± 0.03 Vpp = For 21" without VM models
1.40 ± 0.03 Vpp = For 21" NTSC without VM
8. Select Wide Mode to "ON" in TV and Video mode and
write "PMAX" data - 8 steps
(for models with V-Compression features only).
9. Then press [MUTING] 
t - to write the data.
10. Set "SOC", "PWL" and "BLBG" back to initial data.
("SOC": 00h, "PWL": 01h, "BLBG": 00h)
11. Then press [MUTING] 
t - again to write the data.
3-3-2. SUB COLOR ADJUSTMENT
1. Set TV to Video mode.
2. Set Picture mode to "Custom".
3. Input PAL 100% Color Bar(CB) to TV set (OTHER
MODEL).
4. INPUT NTSC 75% CB to TV set (NTSC MODEL).
5. Set PICT 006 "WTS" to 00h and Intelligent Picture to
"OFF".
6. Set the following condition:
PICTURE 100%, COLOR 50%, BRIGHTNESS 50%,
HUE 50%, SHARPNESS 50%
7. Connect an oscilloscope to pin 2 (B Output) of CN004.
8. Select SADJ 004 "SCOL" with 1 and 4 button of the
commander then adjust with 3 and 6 so that
V
B2
=V
B3
=V
B4
 (for PAL), and V
B1
=V
B4
 (for NTSC) then
write in the data +9 step offset, (for comb model) and
+13 step offset (for no comb model).
9. Copy "SCOL 50 PAL (Video)" data to "SCOL 50 SECAM
(Video)" data to "SCOL 50 PAL (TV)" and "SCOL 50
SECAM (TV)".
VR
Black
VB2 = VB3 = VB4 (for PAL)
VB1 = VB4 (for NTSC)
(Difference is within 70mV)
VB1
VB2 VB3 VB4
VB1 VB2 VB3 VB4
10. Copy "SCOL 60 NTSC (Video)" data to "SCOL 60 NTSC
(TV)" and +1 step offset (for GA NTSC only).
11. Copy "SADJ SCOL 50 PAL" data to "SCOL 50 YUV"
table and "SCOL 60 NTSC" data to "SCOL 60 YUV"
table.
12. Then press [MUTING] 
t - to write the data.
13. Set "WTS" back to original data and Intelligent Picture to
"ON".
14. Copy no.12 data to PAL TV & DVD mode (OTHER
MODEL) and NTSC TV & DVD mode (NTSC MODEL)
3-3-3. SUB HUE ADJUSTMENT
1. Set TV to Video mode.
2. Set Picture mode to "CUSTOM".
3. Input NTSC 3.58 CB to TV set.
4. Set the following condition:
PICTURE 100%, COLOR 50%, BRIGHTNESS 50%,
HUE 50%, SHARPNESS 50%
5. Select service mode and - 9 steps (for video) and -10
steps (for TV) offset from SADJ 004 "SCOL" using 1
and 3 button of the remote commander.
6. Connect oscilloscope to pin 2 (B output) of CN004.
7. Set to service mode and select SADJ 001 "SHUE" with
1 and 4 button then adjust to V
B1
=V
B2
=V
B3
=V
B4
 with
3 and 6 button.
8. Press [MUTING] 
t - to write the data.
9. Select service mode SADJ 004 "SCOL" and +9 step
offset and write the data using [MUTING] 
t -.
10. Select TV channel with 3.58 and repeat item (3) to (7)
and +1 step data offset.(NTSC model)
11. Press [MUTING] 
t - to write the data.
12. For single system model with NTSC 4.43, select TV
channel with NTSC 4.43 and repeat item (3) to (8).
The highest level of V
B1
, V
B2
, V
B3
, V
B4
must be aligned at the same time.
The ideal difference between
V
B2
 and V
B3
 is within ± 80mV
13. Once adjustment is completed in Video mode, carry out
adjustment in DVD mode. Set TV to DVD mode. Input
NTSC 3.58 CB to DVD set and perform step 4 to 9 and
11.
VB1
VB2
VB3 VB4
80mV
Display
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