SHARP 76GF63H
Manual de Servicio

76GF-63H
Changing NVM Data To change the data contained within the Non Volatile Memory, it is necessary to first select the page the data is stored in, then the position and finally to change the data itself. The procedure below outlines this process. 1. While on ALTER NVM PAGE, use the volume up/down buttons to change this data (data is shown in hexadecimal format). 2. Press the channel up button and ALTER NVM POSITION appears, use the volume up/down buttons to change this data (data is shown in hexadecimal format). 3. Press the channel up button and ALTER NVM VALUE appears, use the volume up/down buttons to change this data (data is shown in hexadecimal format). 4. Once this data has been set, press the standby button to store. 5. If another NVM value has to be changed, use the channel down button to select the page or position and repeat as necessary. Note: DO NOT change any NVM data, unless you have been advised to do so by a Sharp representative. If data is incorrectly changed, serious damage may occur to the receiver.

Procedure to re-set the NVM: Modify the NVM values as in the below table.
NVM Page 00 0C 0C 0D 0D NVM Position 7E 20 61 3C A5 Default Value A5 Different on every set Different on every set Different on every set Different on every set New value A6 Default value + 1 Default value + 1 Default value + 1 Default value + 1

All the above values are hexadecimal. Contrast Adjustments Three types of contrast levels can be varied as listed below: � TELETEXT MIX MODE CONTRAST � TELETEXT CONTRAST � OSD CONTRAST Use the volume up/down buttons to adjust to a suitable level, then press the standby button to store. AGC Adjustment To correctly align the Automatic Gain Control, follow the procedure outlined below: 1. Tune the set into a pattern generator on CH10. 2. Adjust the signal strength of the pattern generator to 57uV 3. Enter the service mode. 4. Enter the AGC Adjustment menu. 5. Press the standby button on the remote control. 6. The adjustment will be carried out and stored automatically.

DVCO Adjustment (PAL) Carry out the DVCO Adjustment (PAL) as shown below: 1. Receive a Phillips pattern signal. 2. While in the DVCO ADJUSTMENT (PAL) menu, press the standby button. 3. The adjustment will be carried out automatically and stored.

AFT Adjustment To correctly align the Automatic Fine Tune, follow the procedure outlined below: 1. Tune the set into a pattern generator on CH69. 2. Enter the service mode. 3. Enter the AFT Adjustment menu. 4. Press the standby button on the remote control. 5. The adjustment will be carried out and stored automatically.

DVCO Adjustment (NTSC) No adjustment required.

Auto Installation On/Off To return the receiver to the original Auto Installation mode, using the volume up or down button, set the Auto Installation On/Off to On. This setting is automatically stored and when the receiver is turned on the next time it will start up in Auto Installation mode.

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