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B1 POWER SUPPLY ADJUSTMENT
1. Set VR641 to be mechanically centre before
pressing the mains ON/OFF switch.
2. Tune the receiver to a PAL circular pattern.
3. Set the brightness and contrast controls to
normal.
4. Connect a digital V-meter to test point "TP-B".
5. Using VR641, adjust the voltage to 130 ± 0.5V.
AFT ADJUSTMENT
1. For B/G or L, tune the receiver to the clearest
station. By using T141, adjust the AFT to
obtain the best picture.
2. For L', tune the receiver to the clearest station.
By using VC141, adjust the AFT to obtain the
best picture.
AGC ADJUSTMENT
NOTE: Do not attempt this adjustment with a
weak signal.
1. Tune the receiver to the clearest station.
2. Set AGC VR(VR131) in direction which causes
snow noise just to appear, then in the opposite
direction until the snow noise just disappears.
GREY SCALE ADJUSTMENT
[SCREEN VR ADJUSTMENT]
1. Tune the receiver to the white pattern.
2. Set the brightness and contrast controls to
normal.
3. Set VR2602and VR2612 to their mechanical
centres.
4. Turn VR2601, VR2611 and VR2621 fully
counter-clockwise (anti-clockwise).
5. Set the TV into service mode by pressing the
Function button
the Prog +
on the TV front panel. Press the
P
Function button
"SCREEN" is highlighted. This sets up a
horizontal scanning line.
6. Set screen VR so that one colour is just visible.
[BIAS VR ADJUSTMENT]
7. By using VR2601, VR2611 or VR2621, adjust
the line until it becomes white.
8. Set screen mode OFF, by pressing the Recall
button
on the Remote control.
[DRIVE VR ADJUSTMENT]
9. Using VR2602 and VR2612, adjust white
balance.
on the Remote control and
on the Remote control until
HIGH VOLTAGE & WIDTH ADJUSTMENT
[HIGH VOLTAGE ADJUSTMENT]
1. Tune the receiver to the circular pattern.
2. Set the brightness and contrast controls to
maximum.
3. Connect a digital V-meter to both terminals of
R224, and a high voltage meter to the CRT
anode.
4. Confirm high voltage to be 25.0 ± 1 KV at beam
current 1.1, and less than 28.0 KV at 0 beam
current.
[H-WIDTH ADJUSTMENT]
5. If H0width is too wide or narrow, connect or
disconnect a lead wire J213.
6. Reconfirm high voltage.
H-CENTRE ADJUSTMENT
1. Tune the receiver to a circular pattern.
2. Adjust H-centre by using VR361.
V-CENTRE ADJUSTMENT
1. Tune the receiver to a circular pattern.
2. Adjust V-centre by using SW501.
V-SIZE ADJUSTMENT
1. Tune the receiver to a circular pattern.
2. Adjust V-size by using VR501.
FOCUS ADJUSTMENT
By using FOCUS VR, adjust focus control for
good scanning lines.
-7-
F7KLV
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