Service Adjustments; Adjustment Items - JVC AV-32230 Service Manual

SERVICE ADJUSTMENTS

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, capacitors, etc.
7. Presetting before adjustment.
Unless otherwise specified in the adjustment instructions, preset the following functions with the remote control unit.
•
User mode setting position
VIDEO STATUS
HYPER SURROUND
BASS, TREBLE, BALANCE
TINT, COLOR, PICTURE,
BRIGHT, DETAIL
MEASURING INSTRUMENT
1. DC voltmeter(or digital voltmeter)
2. Oscilloscope
3. Signal generator ( Pattern generator ) [NTSC]
4. Remote control unit
5. TV audio multiplex signal generator
6. Frequency counter
7. Resistor (1MØ)

ADJUSTMENT ITEMS

•
Check of B1 POWER SUPPLY
•
RF AGC adjustment
•
FOCUS adjustment
•
WHITE BALANCE adjustment
WHITE BALANCE (Low Light) adjustment
WHITE BALANCE (High Light) adjustment
PIP HIGH LIGHT WHITE BALANCE Adjustment [Only for AV-
32260 model]
•
BRIGHT adjustment
SUB BRIGHT adjustment
•
CONTRAST adjustment
SUB CONTRAST adjustment
•
DEFLECTION adjustment
V CENTER and TRAPEZIUM adjustment
V-SIZE and V-LINEARITY adjustment
H SIZE and H POSITION adjustment
SIDE PIN and CORNER PIN adjustment
PIP DISPLAY POSITION adjustment [Only for AV-32260
model]
STANDARD
OFF
CENTER
CENTER
No. 51802
•
CHROMA adjustment
SUB COLOR adjustment
SUB TINT adjustment
•
MTS circuit adjustment
INPUT LEVEL check
STEREO VCO adjustment
SAP VCO adjustment
FILTER check
SEPARATION adjustment
•
PURITY and CONVERGENCE adjustments
PURITY adjustment
STATIC CONVERGENCE adjustment
DYNAIC CONVERGENCE adjustment
AV-32230
AV-32260
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