Sharp 14SL30 Service-Handbuch - Seite 6

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1. Block Diagram

14SL30

21SL40, 21SL70

For adjustments of this model, the bus data is converted to various analog signals by the D/A converter

circuit.

Note: There are still a few analog adjustments in this series such as focus and master screen voltage.

Follow the steps below whenever the service adjustment is required. See "Table-B" to determine, if serv-

ice adjustments are required.

1. Service mode

Before putting unit into the service mode, check that

customer adjustments are in the normal mode. Use

the reset function in the video adjustment menu to

ensure customer controls are in their proper (reset)

position.

2. Service number selection

Once in the service mode, press the Ch-up or Ch-

down button on the remote controller or at the set.

The service adjustment number will vary in

increments of one, from "S01" to "M05". Select the

item you wish to adjust.

3. Data number selection

Press the Vol-up or down button to adjust the data

number.

SERVICE ADJUSTMENT NUMBER

To enter the service mode and exit serv-

ice mode.

While pressing the Vol-up and Ch-up buttons at the

sametime, plug the AC cord into a wall socket.

Now the TV set is switched on and enters the service

mode.

To exit the service mode, turn the television off by

pressing the power button.

DATA NUMBER

CHANNEL

S01

55(085)

Figure A.