Adjusting Procedure Of Each Section - Sharp LC-20S2U-S Service Manual

ADJUSTING PROCEDURE OF EACH SECTION

1. Pre-adjustment preparations
Use the specific AC adaptor or a stable DC power supply as power source.
LC-13/15/20S2U AC adaptor: UADP-A044WJPZ
DC power supply: 12V, 5.0A
(1) Entering the adjustment process mode
There are two ways to call this mode.
» Press "MENU" and "INPUT SELECT" at once, and the power is turned on (inspection process started). Then
press "CHANNEL DOWN" and "VOLUME DOWN" at once.
» Set the KEY4 (pin (81) of microprocessor) or KEY5 (pin (82) of microprocessor) terminal to the "L" level. Now
turn on the power.
(2) Key operation in the adjustment process
Basic behavior
» Use the "CHANNEL UP/DOWN" key or the "DIRECT CHANNEL SELECT" key to choose a channel.
» Use the "CURSOR UP/DOWN" key to select an item to adjust. (Let's say that the cursor is on the lowermost item
and the "CURSOR DOWN" key is pressed. The uppermost item on the next page will be selected. When the
"CURSOR UP" key is pressed with the uppermost item being highlighted, on the other hand, the lowermost item
on the preceding page will be selected.)
» Use the "VOLUME UP/DOWN" key or the "CURSOR RIGHT/LEFT" key to adjust the setting of a selected item.
» Press the "MENU" key to go to the next item. (When this key is pressed with the lowermost item being highlighted,
the uppermost item on the next page will be selected.)
Hierarchical structure
» Press the "ENTER" key on any item other than I
» To quit the setup page, press the "FLASHBACK" key.
2 C DATA on page 4, and the item's setup page will show up.
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LC-20S2U-S