Parker TS2192, Руководство по обслуживанию

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4
3 Test equipment
3.1 Audio voltmeter
3.2 Oscillograph
3.3 High-voltmeter
3.4 Digital multimeter
3.5 AC attack pull test equipment
3.6 Sweep signal generator BT-3
4 Debugging instruction
4.1 Enter into the factory debugging menu
Press the following buttons to enter by using the remote control (RC-A23):
DISPLAY → MUTE → MUTE → MUTE → enter into the factory
Press “sleep” button for pages upward, press “ ” button for pages downward, press “CH+/-” to
select alignment items and “VOL+/-” to adjust volume, press “MENU” to exit.
4.2 B+ voltage adjustment
Adjust RP501 and check B+ voltage (negative pole of VD509) by using DC voltmeter DC 200V, the
value of B+ voltage should be 111.0V±0.5V.
4.3 AGC adjustment
4.3.1 Receive A7 signal and measure the AGC voltage (TP3) with digital DC voltmeter.
4.3.2 Antenna receive 40dBu signal and the static AGC voltage of TP1 should be V1=4V±0.2V. Receive
60dBu signal, adjust the value of P6 RF AGC and the voltage of TP1 AGC-take should be V2=3.5V±0.2.
If V2>3.5V, then the voltage is -1 or -2,if V2<3.5V, then the voltage is+1 or+2.
4.3.3 The antenna input 100dBu signal, the picture should not be appeared no-sync, distortion and moire;
input 35-40dBu weak signal, it should not be appeared colorless and no-sync and sound abnormity
electrophoresis of it.
4.4 Audio check
Receive signal tone signal, measure the audio out power with audio frequency meter and the maximum
undistorted power should larger than the maximum undistorted power of the product standard.
4.5 White balance and screen-grid voltage adjustment
4.5.1After enter P5 of factory menu, use remote sensor directly to adjust white balance by pressing the
following digital buttons:
“1”=R.BIAS(+) “2”=G.BIAS(+) “3 ”=B.BIAS(+)
“4”=R.BIAS(-) “5”=G.BIAS(-) “6”=B.BIAS(-)
press “P-P” button to select picture mode T1
→ T2 → vivid → mild → nature → standard → custom
The T1 mode has the maximum value of brightness and contrast with all the other items minimum. Value
of all the analog items are minimum while in T2 mode.
Before adjustment you should set the following items: SUB-BRIGHT=50, R.B=100, G.B=100, B.B=100,
R.D=100, G.D=15, B.D=100, the items can be adjusted according the different CRT.
4.5.2
Press “P-P” button to select T2 picture mode, press CH+/- to select LINE, press VOL+ to let the
field scanning fail to oscillate, adjust the screen-grid potentiometer on FBT clockwise to let horizontal
bright line just appear on the screen; let the value of G.B unchanged, adjust R.B(+/-) and B.B(+/-)
(button1/4 and button3/6) 2-3 times to let the horizontal bright line appear white. If the green horizontal
line don’t appear firstly, fine-tun
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the screen-grid voltage. After adjustment press VOL- to obtain normal