- 20 -
Service Adjustment Procedures
Item/preparation
Adjustment Procedure
+B Voltage Confirmation
1. Operate the set.
2. Set controls:
Bright..........................minimum
Contrast......................minimum
Volume........................minimum
Confirm the following voltages.
1. Pin 1 of connector D3 : 207.0±3.0V
2. Pin 4 of connector D12 : 130.0±2.0V
3. Pin 8 of connector D12 : 26.0±2.0V
4. Pin 1 of connector D13 : 15.5±1.5V
5. Pin 5 of connector D13 : 15.5±1.5V
6. Pin 1 of connector D11 : 9.0±1.5V
7. Pin 7 of connector D3 : 6.4±0.24V
8. Pin 8 of connector D13 : -15.5±1.5V
9. Pin 3 of connector D3 : 12.0±0.5V
10. Pin 1 of connector D14 : 40.0±2.0V (open)
: 32.0±2.0V (short)
11. Pin 8 of connector D11 : 6.5±1V
12. TPCP1 : 22±2V
13. TPCP2 : -22±2V
14. TPCP3 : 14±1.5V
15. TPCP4 : -14±1.5V
RF AGC (Main picture) (MARKET MODE CHK2)
1. Receive a colour bar pattern.
2. Set the input level to
TX-51P100X/H/HQ/HZ : 62dB (+1/-2 dB)
TX-51P100HL : 59dB (+1/-2 dB)
(75
Ω
opened)
3. Connect an oscilloscope to TPA1 with DC mode.
1. Set the TV to MARKET MODE [CHK2 mode].
2. Adjust RF AGC Control so that the voltage at TPA1 becomes 6.2 ±
0.5V.
3. Increase the input level by 2dB and confirm that the voltage
changes.
RF AGC 2 (Sub picture)
1. Receive a colour bar pattern.
2. Set the input level to
TX-51P100X/H/HQ/HZ : 70dB (+1/-2 dB)
TX-51P100HL : 67dB (+1/-2 dB)
(75
Ω
opened)
3. Connect an oscilloscope to TPA8 with DC mode.
1. Adjust TNR002 so that the volt-
age at TPA8 becomes 6.2 ±
0.5V.
2. Increase the input level by 2dB
and confirm that the voltage
changes.
PAL Colour Output
1. Receive PAL colour bar pattern.
2. Connect an oscilloscope to TPA14 (A-Board).
3. Connect a 22k
Ω
jumper between TPA50 and TPA51 (A-
Board).
4. Set controls:
Picture menu..........DYNAMIC NORMAL
P.AI........................OFF
PWL.......................OFF
1. Adjust Sub Colour control.
A=2.4 ± 0.05
NTSC Colour Output
1. Apply 3.58MHz NTSC Rainbow pattern.
2. Connect an oscilloscope to TPA13 (A-Board).
3. Connect a 22 k
Ω
jumper between TPA50 and TPA51 (A-
Board).
4. Set controls :
Picture menu..........DYNAMIC NORMAL
P.AI.........................OFF
PWL........................OFF
1. Confirm that the waveform:
A=1.9 ± 0.2Vp-p
SECAM Colour Output
1. Receive SECAM colour bar pattern.
2. Connect an oscilloscope to TPA14(A-Board).
3. Connect a 22k
Ω
jumper between TPA50 and TPA51(A-Board).
4. Set controls :
Picture menu..........DYNAMIC NORMAL
P.AI.........................OFF
PWL........................OFF
1. Confirm that the waveform:
A=2.0 ± 0.2Vp-p
Adjust
TNR002
(Top View)
A=2.40 ± 0.05
1 2 3 4 5 6 7 8 910
A=1.9 ± 0.2Vp-p
A=2.0 ± 0.2Vp-p
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Содержание TX-51P100H
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