66GS-62 (serv.man5). Section 1 - Text - Sharp TV Service Manual (repair manual). Page 11

4. Once this data has been set, press the stand-by button

to store.

5. If another NVM value has to be changed, use the chan-

nel down button to select the page or position and repeat
as necessary.

Note:
DO NOT change any NVM data, unless you have been ad-
vised to do so by a Sharp representative.  If data is incor-
rectly changed, serious damage may occur to the receiver.

Three types of contrast levels can be varied as listed be-
low:

• TELETEXT MIX MODE CONTRAST

• TELETEXT CONTRAST

• OSD CONTRAST

Use the volume up/down buttons to adjust to a suitable level,
then press the stand-by button to store.

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 stand-by button.

3.

DVCO Adjustment (NTSC)
No adjustment required.

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 57

dB/uV

cally.

Auto Installation On/Off
To return the receiver to the original Auto Installation mode,
using the volume up or down button, set the Auto Installa-
tion 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.

If the TV set does not work and the stereo led is flashing,
follow the sequence according to the information below, as
a guide to fault finding.

1. Unable to read or write into NVM: 66% ON, 33% OFF

twice and OFF for a second.

2.  MSP failure:  66% ON, 33% OFF for three times and

OFF for a second.

3. VCT failure: 66% ON, 33% OFF for four times and OFF

for a second.

On        Off

On        Off

On        Off