JVC AV 32120, Руководство по обслуживанию

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No. 51806
AV-27GFH
15
SERVICE ADJUSTMENT
ADJUSTMENT PREPARATION:
1. You can make the necessary adjustments for this unit with either the remote control unit or with the adjustment equipment and
parts as given below.
2. Adjustment with the remote control unit is made on the basis of the initial setting values, however, the new setting values which
set the screen to its optimum condition may differ from the initial settings.
3. Make sure that AC power is turned on correctly.
4. Turn on the power for the set and test equipment before use, and start the adjustment procedures after waiting at least 30 minutes.
5. Unless otherwise specified, prepare the most suitable reception or input signal for adjustment.
6. Never touch any adjustment parts, which are not specified in the list for this adjustment-variable resistors, transformers, condensers, etc.
MEASURING INSTRUMENT
1. DC voltmeter (or digital voltmeter)
2. Oscilloscope
3. Signal generator ( Pattern generator ) [NTSC]
4. Remote control unit ( OPTION )
5. TV audio multiplex signal generator
6. Frequency counter
ADJUSTMENT ITEMS
●
Check of B1 POWER SUPPLY
●
IF VCO adjustment
●
RF AGC adjustment
●
FOCUS adjustment
●
DEFLECTION adjustment
V. CENTER, V. SIZE, V. POSITION adjustment
H. POSITION adjustment
●
VIDEO / CHROMA adjustment
WHITE BALANCE (Low light) adjustment
WHITE BALANCE (High light) adjustment
SUB BRIGHT adjustment
SUB CONTRAST adjustment
SUB COLOR adjustment
SUB TINT adjustment
●
MTS circuit adjustment
INPUT LEVEL check
STEREO VCO adjustment
SAP VCO adjustment
FILTER check
SEPARATION adjustment