Service Mode/ Factory Mode; Unit Adjustments; Measurement Instruments; Power Source Voltage - NEC MultiSync LCD2080UX -BKA Service Manual

2.2.3 Service Mode / Factory Mode
At the time of adjustment of this model, a suggestion may be given to enter the service (factory) mode. This
will be explained below.
(1) Service mode:
1) In the "display mode" menu, press the 3LEFT and 4RIGHT keys at the same time while pressing the
RESET key.
2) When the SELECT key is pressed under the condition that the WARNING screen is displayed, the
mode moves to the SERVICE mode. At that time, the LED is green. The OSM frame remains yellow.
The OSM AUTO-OFF function is disabled.
3) When withdrawing from the SERVICE mode, press the EXIT key in the highest hierarchy of the
SERVICE menu, or make a signal change, or take an action of POWER OFF.
(2) Factory mode:
1) In the same manner as that for the SERVICE mode, obtain an OSM display of [display mode].
2) Press the RESET key and the (+)UP and (-)DOWN keys at the same time.
3) When the SELECT key is pressed under the condition that the WARNING screen is displayed, the
mode moves to the FACTORY mode. At that time, the LED is yellow. The OSM frame remains to be
red. The OSM AUTO-OFF function is disabled.
4) When withdrawing from the FACTORY mode, press the EXIT key once in the highest hierarchy of the
SERVICE menu. When the WARNING screen is displayed, press the EXIT key twice further.
Note: Even though the EXIT key is pressed once in the highest hierarchy of the SERVICE menu, or a
signal change is made, or an action of POWER OFF is taken, it is impossible to withdraw from
the factory mode. In this case, the menu is just treated for no display.
(3) Service menu:
This is an OSM menu to be displayed when the mode is changed over to the SERVICE mode or the
FACTORY mode. The conditions differ in each mode, in regard to the frame color, entering and
withdrawal, and whether the data are recorded in the EEPROM. Items of the service menu are used in
common.

3. Unit Adjustments

3.1 Measurement Instruments to be Used
The measuring instruments considered necessary for the adjustment of the LCD2080UX unit are specified
below.
1) Equipment that can generate an output of the adjusted VG-819 unit or equivalent

3.2 Power Source Voltage

100 - 240V ± 5%, 50/60Hz
4-3