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Item / Preparation
+B Voltage
1. Operate the TV set.
2. Set control as follows :
Brightness ...........minimum
Contrast .............. minimum
RF AGC
1. Receive a colour bar signal at an RF
level of 69 ± 1-2 dBU with 75
loaded.
2. Connect digital multimeter to RF
AGC at Tuner.
High Voltage
1. Receive the crosshatch pattern.
2. Set to 0 Beam.
Screen VR .......... minimum
Contrast .............. minimum
Item / Preparation
NTSC TINT COLOUR
Connect a short jumper between TPA
10 and TPA 20.
Press Main Menu and set system to
use AV-NTSC (3.58 MHz).
DYNAMIC ................. Normal
Channel CLR Set ..... STD
Confirm the DC voltage at the indicated test points, as
:
TPA 10 : 140.5 ± 1.5V
TPA 8 : 8 ± 1V
TPA 9 : 5 ± 1V
TPA 21 : 175 ± 15V
1. Select "RF AGC" indication in CHK2, on Screen by
control at factory mode.
2. Set RF AGC by using remote control Volume (+) or
(-) button until voltage AGC at Tuner reaches 2.6 ± 0.1V
TPA 15 (Tuner point).
3. Increase RF signal strength by 2dB, confirm AGC at
voltage drop.
1. Connect a DC voltage meter to TPA 20 and confirm
voltage is 140.5 ± 1.5V.
2. Connect a high frequency voltmeter to heater and confirm
that voltage reads 6.3 ± 0.48 (VRMS).
3. Normalize the brightness and contrast.
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 ± 30 by
control.
3. Confirm that colour level is maximum when colour
adjusted to maximum position.
Note: Use remote control only when adjusting user
Sub-Tint.
8
Adjustment Procedure
Adjustment Procedure
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