Dec.2004 3. SW and LED check 4. LCD and Encoder check fig.swcheck1.eps fig.lcdencordercheck1.eps Press the switch whose name is displayed. For switches that have a lit LED, verify that the LED goes dark when you press the switch. 4-1. Adjusting the LCD contrast fig.swcheck2.eps Verify that there is no crosstalk in the background and is no unevenness in the contrast. If there is a no problem with the contrast. -> Use [BANK] to proceed to the next test item If there is a problem with the contrast. ->Make this adjustment, please refer to followings. Turn the encoder counter-clockwise to lighten the contrast. Turn the encoder clockwise to darken the contrast.
* The standard setting is "0." It is adjustable in a range from "-4" through "+4". When you're finished making the setting, press [ENTER]. The display will indicate "Now Writing," and the setting will be written into memory. fig.swcheck3.eps Press the [BANK] switch to proceed to the next test item. 4-2. Slowly turn [VALUE] clockwise for three clicks. If you pressed the correct switch. fig.lcdencordercheck2.eps fig.swcheck4.eps If you pressed the wrong switch. (Ex. press the KIT) Verify that the display changes from 0 -> 1 -> 2 -> 3, and that the contrast below the characters darkens.
fig.swcheck5.eps Verify that the characters can still be read even when the contrast is darkest (third click). 4-3. Slowly turn [VALUE] counter- clockwise for three clicks. fig.lcdencordercheck3.eps When all have been completed, press [BANK] to proceed to the next test item. Verify that the display changes from 3 -> 2 -> 1 -> 0, that the contrast below the characters lightens, and that the characters do not disappear. Press [BANK]. 20