Teac CT-M6840, Руководство по обслуживанию

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Ver1.2 1 December 2001
3
Press “0” to enter OSD setting menu,
OSD Horizontal position of OSD
:
TXCX OSD intensity when maximum contrast
(
RGCN OSD intensity when minimum contrast
TNTX Maximum tint level
/-
TNTN Minimum tint level
/-
1. Apply 110-240VAC(
±
5V) to mains power input, and Philips standard testing pattern to RF input.
2. Adjust VR801 in STANDARD mode until voltage at TP2 (B+) is 112V
±
0.5V.
1. Apply a 38.9MHz signal to the IF input.
2. Monitor the DC voltage at pin 48 of IC201.
3. Adjust T201 until the voltage at pin 48 of IC201 becomes 4.62 +/- 0.2V (the picture must stable).
4. Enter D-mode and press the AFT (update/BBE) button. It will start Auto AFT Adjustment and the
screen will show “PIFAFT OK” if the process is finished.
1. Apply a 38.9MHz color bar with NICAM signal to the IF input.
2. Monitor the DC voltage at pin 15 of IC1101.
3. Adjust T1101 until the voltage at pin 15 of IC1101 becomes 2.5 +/- 0.1V.
4. Then check the waveform at pin 4 and 6 of P1103 and it must show correct audio signal.
!"
1. Connect the detector shown below to collector of Q101.
2. Receive a grey scale signal with 70dB
V amplitude.
3. Adjust RFAGC item until the output of the detector becomes 0.8Vpp
Collector
of Q101 To CRO