DOWNLOAD Sony KD-30XS955 Service Manual ↓ Size: 13.13 MB | Pages: 127 in PDF or view online for FREE

Model
KD-30XS955
Pages
127
Size
13.13 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kd-30xs955.pdf
Date
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 38 
KD-30XS955/34XBR960/34XS955/36XS955
KD-30XS955/34XBR960/34XS955/36XS955
2-5. SCREEN (G2)
1.   Input composite white fi eld into Video 1.
2.  Set to service mode and adjust as follows: 
(Fig. 1)
Opeartion Procedure
Standards
Notes
1) In Full mode, apply changes in Fig. 1
CXA2170P-2 PICO 1-> 0
2) Mount G2 adjustment jig. Adjust Cathode
170 +/- 5 (V
DC
)
voltage if the standard is not met. Standard
32RDE, 36RDE, 38RFN
varies by CRT size.
3) Adjust G2 by Flyback transformer (T8001).
4) Return data changes in 1) to original condition.
2.  Connect oscilloscope to Pin 1 of CN9001 (R.DRV) on the CX Board.
3.  Adjust contrast according to the service mode item: SPIO.
NO. Name
Control Function
02 SCON
SUB-CONT
2103-1
white
black
GND
VR2
VR1
VR
(32XS/34XBR/34XS/36XS) = 1.60 ± 0.05 Vpp
4.  Write data from Step 3 above, into memory.
2-6. PICTURE QUALITY ADJUSTMENTS
Preparation:
•  Set PRO MODE (Reset).
1.  Input signal (480i Composite):
 
• Color Bar Video 75 IRE (White) 75% modulation 7.5% Set-up.
 
• Color Bar RF 75 IRE (White) 75% modulation 7.5% Set-up.
2-6.1.  VIDEO INPUT - SUB CONTRAST 
ADJUSTMENT
Preparation:
•  Input a Color Bar signal to VIDEO 1 (75 IRE 75%).
•  Set picture mode: Single (Full) (PRO MODE Reset).
• Picture: 
Max
• Color: 
Min
1.  Set to Service Mode and adjust as follows:
NO. Name
Control Function
Avg. Data
01 RGBS
R ON
4
2170P-2
(See Section 2-4 Figure 1 - before changing DF/DQP data or 
troubleshooting circuit when DF/DQP is suspect.)
Procedure to adjust or check:
1.  Short Q8018 B-Gnd to disable DF.
 
B Mark is on the circuit board. Circuit connection changes should 
always be done with the power off. 
 
CAUTION: Q8018 heatsink is live and peak voltage is 250V.
2.  Input a cross hatch signal.
3.  Change CXA2170-P2 item 2 RGBS to 2 to make green only.
1.  Overfocus to adjust DQP phase. Adjust the data 
(CXA2170-D4 item 8) to balance left and right vertical line width.
2.  Once DQP is balanced, remove the short from DF circuit and 
refocus the set.
3.  Adjust DF (CXA2170-D4 item 7) to balance left and right vertical 
line width.
4.  Reconfi rm focus performance.
30
34
36
QPAM
33
45
22
QPAV
46
47
40
QPAP
QPDC
29
42
17
QPDV
59
63
52
QPDP
DF
40
38
36
37
36
6
6
6
6
6
6
37
DQP
Table 1
 39 
KD-30XS955/34XBR960/34XS955/36XS955
KD-30XS955/34XBR960/34XS955/36XS955
2-6.2.  VIDEO INPUT - SUB HUE/SUB COLOR 
ADJUSTMENT
Preparation:
•  Input a Color Bar signal to VIDEO 1 (75 IRE 75%).
•  Set picture mode: Single (Full) (PRO MODE Reset).
• Picture: 
Max
1.  Set to Service Mode and adjust as follows:
NO. Name
Control Function
Avg. Data
01 RGBS
R ON
4
2170P-2
2.  Connect an oscilloscope to Pin 5 of CN9001 (B. DRV) on the 
CX Board.
3.  0Adjust color according to Service Mode for SCLO.
4.  Adjust color according to Service Mode for SHUO.
NO. Name
Control Function
03 SCOL
SUB-COL
04 SHUE
SUB-HUE
2103-1
VB4
VB3
VB2
VB1
COLOR: VB1 < VB4 (=20mV ± 200 mV)
HUE: VB2 < VB3 (=20mV ± 200 mV)
5.  Write data into memory.
2-6.3.  RF INPUT - SUB CONTRAST 
ADJUSTMENT
Preparation:
•  Input a Color Bar signal to RF (75 IRE 75%).
•  Set picture mode: Single (Full) (PRO MODE).
• Picture: 
Max
• Color: 
Min
1.  Set to Service Mode and adjust as follows:
NO. Name
Control Function
Avg. Data
01 RGBS
R ON
4
2170P-2
2.  Connect an oscilloscope to Pin 1 of CN9001 (R. DRV) on the 
CX Board.
3.  Adjust contrast according to service mode for SCON.
NO. Name
Control Function
02 SCON
SUB-CONT
2103-1
white
black
GND
VR2
VR1
VR
(32XS/34XBR/34XS/36XS) = 1.60 ± 0.05 Vpp
4.  Write data from Step 3 above, into memory.
7
 40 
KD-30XS955/34XBR960/34XS955/36XS955
KD-30XS955/34XBR960/34XS955/36XS955
2-6.4.  RF INPUT - SUB HUE/SUB COLOR 
ADJUSTMENT
Preparation:
•  Input a Color Bar signal to RF (75 IRE 75%).
•  Set picture mode: single (FULL) (PRO MODE Reset).
• Picture: 
Max
1.  Set to Service Mode and adjust as follows:
NO. Name
Control Function
Avg. Data
01 RGBS
R ON
7
2.  Connect an oscilloscope to pin 5 of CN9001 (B. DRV) on the 
CX Board.
3.  Adjust color according to Service Mode for SCOL.
4.  Adjust color according to Service Mode for SHUE.
NO. Name
Control Function
03 SCOL
SUB COLOR
04 SHUE
SUB HUE
2103-1
VB4
VB3
VB2
VB1
COLOR: VB1 < VB4 (=20mV ± 200 mV)
HUE: VB2 < VB3 (=20mV ± 200 mV)
5.  Write data into memory.
2170P-4
2-7.  WHITE BALANCE (CRT) AND SUB BRIGHT ADJUSTMENT
Preparation
•  Input an all white 480I (15.734 KHz) signal into the VIDEO 1 input terminal to perform the White Balance (highlight, cut-off) adjustments.  The 
parameters to adjust are in the CXA2170P1 in Service Mode.
•  Set Picture Mode: Single (FULL) ( POR MODE Reset)
• Picture: 
Max
• Color: 
Min
 41 
KD-30XS955/34XBR960/34XS955/36XS955
KD-30XS955/34XBR960/34XS955/36XS955
2-7.1. COLOR OFFSET ADJUSTMENT 
PROCEDURE
Preparation:
•  Input an all white (30 IRE) signal to the specifi ed input.
•  Adjust the white balance using the specifi ed registers.
•  Set picture mode: Single (FULL) (PRO MODE Reset)
• Color: 
Max
VIDEO 1
CXA2170P1
NO.
Name
Control Function
 3
CBO
F
CB OFFSET
 4
CRO
F
CR OFFSET
VIDEO 5
CXA2170P1
NO.
Name
Control Function
3
CBO
F
CB OFFSET
4
CRO
F
CR OFFSET
VIDEO 7 -
CXA2170P1
NO.
Name
Control Function
3
CBO
F
CB0
F (FROM VIDEO 5) + 3
4
CRO
F
CR0
F (FROM VIDEO 5) - 4
2-8.  H RASTER CENTER ADJUSTMENT
Preparation:
•  Input a monoscope signal.
•  Set to NTSC (DRC) mode.
1.  Set to Service Mode and adjust as follows:
NO. Name
Control Function
Data
05 AGNG
AGING 1, AGING 2
2
NO. Name
Control Function
Avg. Data
02 HSIZ
Horiz Size
31
01 HPOS
Horiz Position
31
NO. Name
Control Function
Avg. Data
00 HBLK
Blanking Enable
0
CXA2170P-2
CXA2170D-2
CXA2170D-3
2.  Reduce HSIZ to see sides of raster. (See Figure A)
3.  Adjust H-Center with CXA2170D-2.
4.  Adjust to the best screen position with H-CENT and write data.
5.  Restore aging, HSIZ and HBLK to original condition.
Raster Edge Equal:
RASTER
 EDGES
RASTER
Figure A
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