Toshiba 20AR20 Panduan Servis - Halaman 9

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Halaman Cetak

1. Schematic Diagrams

Sub-Color Adjustment

1. Receive a good local channel.

2. Make sure the customer color control is set to center

position .

3. Enter the service mode and select the service

adjustment "S03".

4. Adjust "S03" data value to obtain normal color level.

Sub-Brightness Adjustment

1. Receive a good local channel.

2. Make sure the customer brightness control is set to

center position.

3. Enter the service mode and select the service

adjustment "S04".

4. Adjust "S04" data value to obtain normal brightness

level.

Vertical-Size Adjustment

1. Receive a good local channel.

2. Enter the service mode and select the service

adjustment "S09".

3. While observing the top and bottom of the screen,

adjust "S09" data value to proper vertical size.

Vertical Phase Adjustment

1. Enter the service mode and select the service

adjustment "S06".

2. Adjust data value to "00" ~ "03" so that picture is

approximate center.

Note: This must be set "00" ~ "03" when adjust

another data retrace line will be appear.

Horizontal Position Adjustment

1. Receive a good local channel.

2. Enter the service mode and select the service

adjustment "S07".

3. Adjust "S07" data value so that picture is centered.

Caption Position Adjustment (Horizontal)

1. Receive a good local channel.

2. Enter the service mode and select the service

adjustment "S18".

3. A black text box appears on the screen. (see Figure

B. below)

4. Adjust "S18" data value so that text box is positioned

in the center of the screen.

3.58MHz Trap Adjustment

1. Receive a good local channel.

2. Enter the service mode and select the service

adjustment "S16".

3. This is a two position adjustment, "00" is ON, "01" is

OFF.

4. Adjust data value to "00" for normal viewing.

Sharpness and Audio Balance Adjust-

ments

1. Receive a good local channel.

2. Enter the service mode and select the service

adjustments "S05" for sharpness and "S17" for

balance.

» Sharpness Adjustment

3. Adjust data value to "24"(center of data range) for

sharpness adjustment.

» Audio Balance Adjustment

4. Adjust data value to "20"(center of data range) for

audio balance adjustment.

Figure B.

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