SONY XTL750W
Manual de Servicio

RGB Decoder FO Adjustment Procedure: Hong Kong model: 1. Without INPUT1, INPUT2 inputs (no signal input mode), short the jumper wire between TP100 and GND. 2. Connect a frequency counter to TP61. 3. Adjust VR6 so that reading on frequency counter is 4.433619 MHz ± 10 Hz. 4. Short the jumper wire between TP106 and GND. 5. Connect a frequency counter to TP61. 6. Confirm that reading on frequency counter is 3.579545 MHz ± 100 Hz. 7. After this adjustment, remove the jumper wires. US model: 1. Without INPUT1, INPUT2 inputs (no signal input mode), short the jumper wire between TP100 and GND. 2. Connect a frequency counter to TP61. 3. Adjust VR6 so that reading on frequency counter is 3.579545 MHz ± 100 Hz. 4. After this adjustment, remove the jumper wires. RGB Decoder Input Level Adjustment Procedure: 1. Input signal : PAL EBU color bar (INPUT 1 VIDEO) 2. Adjust VR4 so that the white peak 1 (100% white) of TP111 (B OUT) is at 1.0 Vp-p.

SYNC
1 2 4 3

TP111 white blue

DL AMP & DAT Adjustment (Hong Kong model) Procedure: 1. Adjust DAT so as to minimize the variation between the level 2 and the level 3 of TP111. 2. Adjust VR5 so that the blue level 4 is at 1.0 Vp-p. 3. Set the input to NTSC, and confirm that the blue level 4 is at 1.0 ± 0.1 Vp-p.

SYNC
1 2 4 3

TP111 white blue

� 13 �