Led Flashing Codes - Sharp 28JS-74SS Service Manual

28JS-74S
DVCO Adjustment (NTSC)
Carry out the DVCO Adjustment (NTSC) as shown below:
1. Receive a color pattern signal (NTSC 3.58).
2. While in the DVCO ADJUSTMENT (NTSC) menu, press the stand-by button.
3. The adjustment will be carried out automatically and stored.
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 57dB/µV
3. Enter the Service Mode.
4. Enter the AGC Adjustment menu.
5. Press the stand-by button on the remote control.
6. The adjustment will be carried out and stored automatically.
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.
If the TV set does not work and the power indicator 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. SDA 9380 failure: 66% ON, 33% OFF for four times and OFF for a second.
4. SDA 9402 failure: 66% ON, 33% OFF for five times and OFF for a second.

LED FLASHING CODES

On Off
On Off
On Off
On Off
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