Read Sony KV-34XBR800 (serv.man2) Service Manual online
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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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