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2.5.1. +B Voltage
Item / preparation
1. Operate the TV set.
2. Set control as follows :
1. Operate the TV set.
2. Set control as follows :
Brightness ........... minimum
Contrast ............... minimum
Contrast ............... minimum
Adjustment procedure
1. Confirm the DC voltage at the indicated test points, as
1. Confirm the DC voltage at the indicated test points, as
follows :
TPA 10 : 141.0 ± 1.5V
TPA 8 : 8 ± 1V
TPA 9 : 5 ± 1V
TPA 21 : 175 ± 15V
TPA 10 : 141.0 ± 1.5V
TPA 8 : 8 ± 1V
TPA 9 : 5 ± 1V
TPA 21 : 175 ± 15V
2.5.2. High Voltage
Item / preparation
1. Receive the crosshatch pattern.
2. Set to 0 Beam.
1. Receive the crosshatch pattern.
2. Set to 0 Beam.
Screen VR .......... minimum
Contrast .............. minimum
Contrast .............. minimum
Adjustment procedure
1. Connect a DC voltage meter to TPA 10 and confirm the +B
1. Connect a DC voltage meter to TPA 10 and confirm the +B
voltage is 141.0 ± 1.5V.
2. Connect a high frequency voltmeter to heater and confirm
that voltage reads 6.3 ± 0.24 (VRMS).
3. Normalize the brightness and contrast.
2.5.3. NTSC TINT COLOUR
Item / preparation
1. Connect oscilloscope probe to TPL1 (R OUT) with 10k
1. Connect oscilloscope probe to TPL1 (R OUT) with 10k
Ω
series resistor.
2. Press Main Menu and set system to use AV-NTSC (3.58
MHz).
DYNAMIC ................... Normal
Channel CLR Set ..... STD
DYNAMIC ................... Normal
Channel CLR Set ..... STD
Adjustment procedure
1. Adjust Sub-Tint so that No. 2, 3 and 4 becomes level
1. Adjust Sub-Tint so that No. 2, 3 and 4 becomes level
waveform is similar to Fig. 3.
2. Confirm phase at Tint is changes more than ± 15 by Tint
control.
3. Confirm that colour level is maximum when colour DAC is
adjusted to maximum position.
Note: Use remote control only when adjusting user mode to
Sub-Tint.
Note: Use remote control only when adjusting user mode to
Sub-Tint.
2.5. Adjustment Procedure
7
TX-21FG20T
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