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B . DEFLECTION ADJUSTMENT / CONFIRMATION (50 Hz, 4:3 Mode ONLY)
(Service 1)
1. INSTRUMENT
a. Helmhortz device
2. PREPARATION
a. Set the Helmhortz device to local magnetic field.
b. Picture menu : DYNAMIC Normal
b. Picture menu : DYNAMIC Normal
3. CONFIRMATION AND ADJUSTMENT
a. Adjustment of 50 Hz V-CENTER
a. Receive the Philips pattern (US11).
b. Adjust V-POS so that centre of Philips pattern is at 2/3 of Top and Bottom.
b. Adjust V-POS so that centre of Philips pattern is at 2/3 of Top and Bottom.
A, B (Fig. 3c) is 2/3 of viewable size
b. Adjustment of 50 Hz V-AMP
a. Receive the Philips pattern (US11).
b. Adjust V-AMP so that
b. Adjust V-AMP so that
A (Fig. 3b) is 2/3 of viewable size
c. Adjustment of 50 Hz H-CENTER
a. Receive the Philips pattern (US11).
b. Adjust H-POS so that horizontal position is at centre of CRT.
b. Adjust H-POS so that horizontal position is at centre of CRT.
C, D (Fig. 3c) is 2/3 of viewable size
Fig. 3b
Fig. 3c
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TX-21RX20T
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