Service Mode - NEC MultiSync LCD1550ME Service Manual

4) If there is no particular operation, an all white screen (255/255 gradation) is displayed.
5) Operate the(4) RIGHT and (3)LEFT keys in this state. Then, operation for the gradation becomes
possible. It is also possible to change the pattern by operating the (4)RIGHT and (3)LEFT keys.
6) When withdrawing from the aging mode, press the EXIT key.
During operation in the aging mode, the power save mode is not assumed. The LED maintains the green
display.

2.2.3. Service 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 (+) and (−) LEFT keys at the same time while pressing the
RESET key.
2) When the NEXT 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 kept lit in green. 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 changeover, or take an action of POWER OFF.
(2) Service menu:
This is an OSM menu to be displayed when the mode is changed over to the SERVICE mode. The
conditions differ in each mode, in regard to entering and withdrawal, and whether the data are recorded
in the EEPROM. Items of the service menu are used in common.
Push (+) PLUS and (-) MINUS and RESET
4-3