Sony KD-30XS955 (serv.man2) Service Manual ▷ View online
30
KD-30XS955/34XS955
KD-30XS955/34XS955
8. LUBW (Left Upper BOW)
B R
9. LUMB (Left Upper Middle BOW)
B R
10. LLBW (Left Lower BOW)
B R
11. LLMB (Left Lower Middle BOW)
B R
12. CADJ Fix 29
2-4. FOCUS ADJUSTMENT
Confi rm neck assembly Z axis position. (See Figure 1)
1. Input a dot signal.
2. Set Video Mode to STANDARD.
3. Adjust focus VR counter clockwise (Over Focus) to confi rm the dot’s
1. Input a dot signal.
2. Set Video Mode to STANDARD.
3. Adjust focus VR counter clockwise (Over Focus) to confi rm the dot’s
shape. Center should be very slightly oval with left and right sides
balanced.
balanced.
4. Input a HD monoscope signal.
5. Confi rm center focus with focus VR.
5. Confi rm center focus with focus VR.
KD-34XS955
CRT: 36RDE/38RFN
CRT: 36RDE/38RFN
(Super-fi ne pitch and square fannel)
Neck Assy:NA328 (VA-type, square pin assignment, VPIN harness)
G3
G2
Neck-Assy: NA328
G1
G1 Cup Holder
Center Tolerance: + /- 0. 5mm
KD-30XS955
CRT:
CRT:
32RDE (Super-Fine Pitch and square fannel)
Neck Assy:NA2920 (VA-Type, Square pin assignment, VPIN harness)
Neck-Assy: NA2920
G3
G2
Edge of G2 part
Center Step
G1
Position tolerance: +/- 0.5mm
Figure 1
Focus
Screen (G2)
HVD
Over Focus
DQP Dot Pattern
Upper Corner
Lower Corner
Center Horizontal Line
Center Dot Slightly Oval
NOTE: Changing neck assembly position will affect corner convergence.
2-4.1. DYNAMIC FOCUS/DYNAMIC QUADRA-
POLE DATA
Normally, no adjustments are necessary for these systems. If for some
reason the data is lost, use the data from Table 1 below:
reason the data is lost, use the data from Table 1 below:
1. Write the data from any non-vertically compressed mode, then use
the CPY1 function (CXA2170D-4 Item 6) to copy the data to the
vertical compressed modes.
vertical compressed modes.
Note: V-compressed data is identical to non-v-compressed data.
Service personnel with a trained eye can adjust the DF or DQP
registers to adjust DF phase (Item 7) or DQP phase (Item 8),
respectively, to balance left and right focus. Refrain from adjusting
more than 5 steps from table data below. Further adjustment
indicates a circuit problem -- troubleshoot to cause.
registers to adjust DF phase (Item 7) or DQP phase (Item 8),
respectively, to balance left and right focus. Refrain from adjusting
more than 5 steps from table data below. Further adjustment
indicates a circuit problem -- troubleshoot to cause.
CAUTION: Be sure that Neck Assembly is in the proper location.
Mark position before moving or replacing neck assembly.
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KD-30XS955/34XS955
KD-30XS955/34XS955
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
)
32RDE, 36RDE
voltage if the standard is not met. Standard
varies by CRT size.
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
(30XS/34XS) = 1.60 ± 0.05 Vpp
4. Write data from Step 3 above, into memory.
2-6. PICTURE QUALITY ADJUSTMENTS
Preparation:
• Set PRO MODE (Reset).
• 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%).
• 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.)
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.
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
QPAM
33
45
QPAV
46
47
QPAP
6
6
QPDC
29
42
QPDV
59
63
QPDP
6
6
DF
40
36
DQP
38
37
Table 1
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KD-30XS955/34XS955
KD-30XS955/34XS955
2-6.2. VIDEO INPUT - SUB HUE/SUB COLOR
ADJUSTMENT
Preparation:
• Input a Color Bar signal to VIDEO 1 (75 IRE 75%).
• 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:
2170P-2
NO.
Name
Control Function
Avg. Data
01
RGBS
R ON
4
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%).
• 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:
2170P-2
NO.
Name
Control Function
Avg. Data
01
RGBS
R ON
4
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
(30XS/34XS) = 1.60 ± 0.05 Vpp
4. Write data from Step 3 above, into memory.
33
KD-30XS955/34XS955
KD-30XS955/34XS955
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:
• 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
• 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:
• Picture:
Max
• Color:
Min
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