AV-27D502
12
No. 51797
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.
VIDEO STATUS
STANDARD
HYPER SURROUND
OFF
BASS, TREBLE, BALANCE
CENTER
TINT, COLOR, PICTURE,
CENTER
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 (1M
Ø
)
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
•
BRIGHT adjustment
SUB BRIGHT adjustment
•
CONTRAST adjustment
SUB CONTRAST adjustment
•
DEFLECTION adjustment
V CENTER and TRAPEZIUM adjustment
V-SIZE and V-LINEARITY adjustment
H POSITION adjustment
PIP DISPLAY POSITION adjustment
•
CHROMA adjustment
SUB COLOR adjustment
SUB TINT adjustment
•
User mode setting position
•
MTS circuit adjustment
INPUT LEVEL check
STEREO VCO adjustment
SAP VCO adjustment
FILTER check
SEPARATION adjustment
Содержание AV 27D502
Страница 62: ...AV 27D502 AV 27D502 No 51797 No 51797 TOP FRONT AV SELECTOR PWB PATTERN 2 20 2 19 ...
Страница 63: ...AV 27D502 AV 27D502 No 51797 No 51797 CRT SOCKET PIP TOP FRONT TOP CRT SOCKET AND PIP PWB PATTERNS 2 21 2 22 ...
Страница 84: ...AV 27D502 No 51797 43 ...
Страница 130: ...Troubleshooting 46 ...
Страница 135: ...Specifications 51 Specifications subject to change without notice ...