Sony KV-34XBR800 (serv.man2) Service Manual ▷ View online
— 14 —
KV-34XBR800
2-3.4. SCREEN-CORNER CONVERGENCE
Preparation:
• Input a cross hatch pattern signal.
• Input a cross hatch pattern signal.
1. Affi x a permalloy assembly corresponding to the misconverged areas.
d
c
a
b
a-d: screen-corner
misconvergence
a
b
c
d
2-3.5. DYNAMIC CONVERGENCE
ADJUSTMENTS
• Set dynamic convergence using the following service mode adjustment
data.
• Only H-component can be corrected, for vertical component use
permalloy to compensate.
• After adjusting the following parameter, write data into NVM
MUTING + ENTER then copy for 1080i CPY2
(D Conv Item 13 - Change data to 1 then write.)
0. YBWU (Upper Y-BOW)
B R
B R
1. YBWL (Lower Y BOW)
B R
B R
2. RSAP (Right H AMP)
R B
3. RUBW (Right Upper BOW)
B R
4. RUMB (Right Upper Middle BOW)
B R
5. RLBW (Right Lower BOW)
R B
6. RLMB (Right Lower Middle BOW)
B R
7. LSAP (Left H AMP)
B R
8. LUBW (Left Upper BOW)
B R
9. LUMB (Left Upper Middle BOW)
B R
10. LLBW (Left Lower BOW)
B R
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KV-34XBR800
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 clockwise (DE-Focus) to confi rm that the dot’s shape
is centered. (Figure 2 & 3) Confi rm neck assembly rotation by W Board
position. W Board should be level ±1º. Adjust as necessary to balance
dot shape along center horizontal line, then refocus.
position. W Board should be level ±1º. Adjust as necessary to balance
dot shape along center horizontal line, then refocus.
4. Input a HD monoscope signal.
5. Confi rm center focus with focus VR.
Figure 1
FOCUS
Screen (G2)
DOT SHAPE:
NOTE: Changing neck assembly position will affect corner convergence.
2-4.1. DYNAMIC FOCUS/DYNAMIC
QUADRA-POLE DATA
Figure 2
Figure 3
Normally, no adjustments are necessary for these systems. If for some
reason the data is lost, use the following data:
reason the data is lost, use the following data:
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. 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. Be sure that Neck Assembly is in the
proper location
the CPY1 function (CXA2170D-4 Item 6) to copy the data to the
vertical compressed modes. 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. Be sure that Neck Assembly is in the
proper location
(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.)
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KV-34XBR800
2-5. SCREEN (G2)
1. Input composite white fi eld into Video 1.
2. Set to service mode and adjust as follows:
(Fig 1)
Operation Procedure
Standards
Notes
CXA2170P-2 PICO 1
0
1) In Full mode, apply changes in
Fig 1
2) Mount G2 adjustment jig.
Adjust Cathode voltage if the
standard is not met. Standard
varies by CRT size.
standard is not met. Standard
varies by CRT size.
3) Adjust G2 by Flyback
Transformer (T8001).
4) Return data changes in 1) to
original condition.
170 +/- 5 (Vdc) 34RSN
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 (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
2150P-2
2. Connect oscilloscope to Pin 1 of CN9001 (R.DRV) on the C Board.
3. Adjust contrast according to the service mode item: SPIO.
NO. Name
Control Function
02 SCON
SUB-CONT
2103-2
white
black
GND
VR2
VR1
VR
(36XBR) = 1.67 ± 0.05 Vpp
4. Write data from Step 3 above, into memory.
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 (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
2150P-2
2. Connect an oscilloscope to Pin 5 of CN9001 (B. DRV) on the C
Board.
3. Adjust color according to Service Mode for SCLO.
4. Adjust color according to Service Mode for SHUO.
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KV-34XBR800
NO. Name
Control Function
03 SCOL
SUB-COL
04 SHUE
SUB-HUE
2103-1
VB4
VB3
VB2
VB1
COLOR: VB1 < VB4 (=20 ± 40 mV)
HUE: VB2 < VB3 (=20 ± 40 mV)
7. Write data into memory.
2-6.3. RF INPUT - TWO PICTURE 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: P&P (PRO MODE).
• Picture:
Max
1. Set to Service Mode and adjust as follows:
NO. Name
Control Function
Avg. Data
28 SPOF
SMALL PICTURE OFFSET
0
NO. Name
Control Function
Avg. Data
01 RGBS
R ON
4
2170P-4
2170P-2
2. Connect an oscilloscope to Pin 1 of CN9001 (R. DRV) on the C
Board.
3. Adjust MAIN (left) side contrast according to service mode for SCON.
NO. Name
Control Function
02 SCON
SUB-CONT
2103-1
4. Adjust SUB (right) side contrast according to Service Mode for
SCON.
NO. Name
Control Function
02 SCON
SUB-CONT
2103-2
white
black
GND
VR2
VR1
VR
(34XBR) = 1.67 ± 0.05 Vpp
5. Write data from Steps 3 - 4 above, into memory.
6. Set Service Mode
NO. Name
Control Function
Avg. Data
28 SPOF
SMALL PICTURE OFFSET
13
2170P-4
2-6.4. RF INPUT - SUB HUE/SUB COLOR
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: P&P (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
2150P-4
2. Connect an oscilloscope to pin 5 of CN9001 (B. DRV) on the C
Board.
3. Adjust MAIN (left) side color according to Service Mode for SCOL.
4. Adjust MAIN (left) side color according to Service Mode for SHUE.
NO. Name
Control Function
03 SCOL
SUB COLOR
04 SHUE
SUB HUE
2103-1
5. Adjust SUB (right) side color according to Service Mode for SCOL.
6. Adjust SUB (right) side color according to Service Mode for SHUE.
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