AV-14FMG3/AV- 14FMG3B
ADJUSTMENTS
B1 POWER SUPPLY
Item | Measuring | Test point | Ad justment part | Description | |
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Check of | Signal |
| 1.Input a whole black signal. | ||
B1 Power | generator |
| 2.Connect a DC voltmeter to | ||
Supply |
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| 3.Make sure that the voltage is DC116.5±2.0V. | ||
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FOCUS ADJUSTMENT
Item | Measuring | Test point | Ad justment part | Description | |
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Ad justment | Signal |
| FOCUS VR | 1.Input a | |
of FOCUS | generator |
| [In HVT] | 2.While watching the screen, adjust the FOCUS VR to make the | |
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| vertical and horizontal lines as fine and sharp as possible. | |
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| 3.Make sure that when the screen is darkened, the lines remain in | |
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| good focus. | |
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IF CIRCUIT ADJUSTMENT
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Ad justment |
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| 1. VCO | ●Please use signal generator which is correct proof about the | ||||
of VCO(CW) |
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| sending frequency. | |||||
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| Remote |
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| 1.Input the PAL full colour bar (210.25MHz) signal. | |
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| control unit |
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| 2.Enter the SERVICE MENU. | ||
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| 3.Select 1.IF from the SERVICE MENU. |
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| 4.Press 1 key and select 1.VCO. |
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| VCO (CW) ***.** MHz |
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| 5.Select VCO ADJUST with MENU ▲/▼ key. | ||||||
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| TOO HIGH |
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| ABOVE REFERENCE |
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| 6.Press MENU | ||
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| JUST REFERENCE |
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| YELLOW | HIGH changes blue to yellow. Then gradually press the MENU | |||||
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| BELOW REFERENCE |
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| TOO LOW |
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| AFT ADJUST | ** *(* *) |
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| that the value of VCO ADJUST is near +00. | ||||
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| VCO ADJUST | ** *(* *) |
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| 7.Select AFT ADJUST with MENU ▲/▼ key. | ||||
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| FINE |
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| Do no t adjust | ||||
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| DISP : EXIT |
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| 8.Press MENU | ||||||||
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| changes blue to yellow. |
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| 9.Press the DISPLAY key three times to return to normal screen. |
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TOO HIGH
ABOVE REFERENCE
JUS T R EFE RE NC E
BELOW REFERENCE
TOO LOW
ADJUSTMENT AT THIS POINT IS USELESS | ADJUSTMENT POINT |
20 | No. 52026 |
