NEC NC1600C Service Manual page 193

ADJUSTMENTS AND INSPECTIONS ATTRIBUTABLE TO THE REPLECEMENT OF ELECTRICAL AND OPTICAL PARTS
PJKEY PWB exchange
Operation check for control key & LED
1) "POWER" key (Not required if already finished)
2) "LENS CTL" key
Confirm that any key is effective in the LENS CTL area.
When "CTL (LENS)" is pressed, character lighting shall be performed in the LENS CTL area.
"UP", "DOWN", "RIGHT", "LEFT", "FOCUS+", "FOCUS –", "ZOOM+", "ZOOM –", "DOUSER"
Other keys need not be tested because they have already been checked at the time of Lens Mount test.
3) "MENU CTL" key
Confirm that any key is effective in the MENU CTL area.
"MENU" : Moves from the Home screen to the Menu Select screen.
"ENTER" : Determines selection.
"CANCEL" : Cancels the selection. Otherwise, it returns to the previous one.
"UP" : Goes upward in the menu.
"DOWN" : Goes downward in the menu.
"LEFT" : Goes to the left in the menu.
"RIGHT" : Goes to the right in the menu.
4) "LAMP CTL" key
CTL
When a key is pressed, character lighting shall be performed in the LAMP CTL area.
(LAMP)
("LAMP+", "LAMP –", "LAMP ON", "LAMP OFF")
CTL
+
LAMP -
(LAMP)
CTL
+
LAMP +
(LAMP)
CTL
+
LAMP ON
(LAMP)
CTL
+
LAMP OFF
(LAMP)
"Confidential, Do Not Duplicate without written authorization from NEC."
: The lamp output value shall lower (DOWN).
: The lamp output value shall rise (UP).
: The lamp shall be turned ON (to be pressed for about 3 seconds or longer).
: The lamp shall be turned OFF (to be pressed for about 3 seconds or longer).
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