Sharp LC-20S4U-S - 20" LCD TV, Service Manual And Parts Listparts List

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LC-20S4U-S
13
ADJUSTING PROCEDURE OF EACH SECTION
The products have been factory-adjusted to the best settings. If any of them gets out of point or readjustment is
needed due to a part replacement, take the following adjustment procedures.
1. Pre-adjustment preparations
Keep the AC power cable directly plugged in a wall outlet.
2. Adjustment procedures
»
Power on (initialization)
→
Model number and screen size settings
→
Transfer of model-related data (I
2
C) to
setting E
2
PROM
»
Common bias adjustment
→
TAMP adjustment
→
White balance (cut-off and gain) adjustment
3. Entering the adjustment process mode
3-1. Calling the adjustment process mode
»
Turn on the power and press the "ADJUST PROCESS" key on the remote controller.
»
For servicing, hold down the "INPUT" and "VOL (–)" keys at once, and turn on the power switch.
("K" appears at the top left onscreen to indicate that the adjustment process mode is on.)
Press the "CH (
Ù
)" and "VOL (–)" keys at once. (The adjustment process mode screen shows up.)
To quit the mode, turn off the power (using the power switch on the set or the remote controller).
4. Key operation
Ë
Basic operation
Selecting a receiving channel
»
Using the "CH (
ù
)/(
Ù
)"keys, select an actual receiving channel.
Instant press: Channels are selected one by one.
Continuous press: The next receivable channel is searched and selected.
»
Various adjustments
Using the "MENU", "cursor" and "VOL (+)/(–)" keys (on the set and the remote controller), adjust the settings of
each item.
»
Using the "cursor UP/DOWN" keys, select an adjustment item.
»
Press the "MENU" key, and the adjustment items will be selected one after another (to the next item).
When the item at the bottom of a page is selected, the press on the "MENU" key advances to the top item on
the next page.
»
Even if any item is selected, the press on the "PRESET" key advances to the top item on the next page.
Page 1
→
Page 2
→
Page 3
→
Page 9
→
Page 1 ...
»
Even if any item is selected, the press on the "MANUAL MEMORY" key moves back to the top item on the same
page.
»
Using the "cursor RIGHT/LEFT" and "VOL (+)/(–)" keys, turn up and down the settings of a selected item.
Ë
Hierarchical shift
»
Press the "ENTER" key on any item other than I2C DATA on Page 4, the setting page of the item will show up.
»
To quit the setting page, press the "PREVIOUS SCREEN" key.