Specifications
13
LC-20D30U
ADJUSTMENT PROCEDURE OF EACH SECTION
1. Preparations
(1) Plug the power cable in an AC power outlet.
AC 110 V~240V
[1] Adjustment procedure
1-1. Adjusting the checker
Power on (initialization) → Model number/inch size settings → Model-specified data transfer to E2PROM
(I2C) → EDID data write
1-2. Finish process adjustment
Assembling → Power on → Adjustment process mode (bus connector) → AD converter level, TAMP, and
white balance (cut-off and gain) adjustments
[2] Entering the checker mode and adjustment process mode
2-1. Entering the checker mode
* Set KEY-5 (pin 82 on the microprocessor) to "L" and turn on the power.
KEY-4 KEY-5 Mode shift
H H Normal mode (Brand-new data to be written and stored on E2PROM).
L H Shift to the adjustment process mode.
HL
Checker process activated at the applied master ROM value (E2PROM still intact after checking).
LL
E2PROM initialized and microprocessor's master values written on it (process adjustment values not rewritten).
2-2. Entering the adjustment process mode
There are the following three ways to enter this mode.
* Turn on the power and press the "ADJUST PROCESS" key on the remote controller.
* Set KEY-4 (pin (81) on the microprocessor) to "L" and turn on the power.
* In servicing:1Hold down the INPUT SELECT and VOL (–) keys at once, and turn on the power switch. ("K"
appears at the top left of the screen to indicate the inspection process mode.) → 2Next hold down the CH (Ù)
and VOL (–) keys at once. (The adjustment process mode screen shows up.) To clear this mode, just turn off the
power. (Either the power switch on the set or the remote controller may be used for this purpose.)
[3] Key operation in the adjustment process mode
ËBasic operation
* Use the CH (ù)/(Ù) keys to select a channel.
* Use the INPUT SELECT key to select an input.
* Use the CURSOR UP/DOWN key to select an item to be adjusted. (When the CURSOR DOWN key is pressed at
the bottom item, it comes to the top item on the next page.
When the CURSOR UP key is pressed at the top item, it comes to the bottom item on the previous page.)
* Use the VOL (+)/(–) keys or CURSOR LEFT/RIGHT keys to modify the setting of a selected item.
* Press the MENU key to go to the next item. (When pressed at the bottom item, the top item on the next page is
selected.)
* Press the MANUAL MEMORY key to go back to the top item. (When pressed at the top item, the top item on the
previous page is selected.)
* Press the AUTO PRESET Key to go to the top item on the next page.
ËHierarchical level shift
* When the ENTER key is pressed at any item other than I2C DATA on page 9, the setting page of the item shows
up.
* To get out of the setting page, press the PREVIOUS SCREEN key.