GDM-500PS, GDM-500PST, GDM-500PST9 - Sony Monitor Service Manual (repair manual). Page 3

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GDM-500PS/500PST/500PST9
– 3 –
POWER  SAVING  FUNCTION
This monitor meets the power-saving guidelines set by VESA and
Energy Star, as well as the more stringent NUTEK .
If the monitor is connected to a computer or video graphics board
that is VESA DPMS (Display Power Management Signaling)
compliant, the monitor will automatically reduce power con-
sumption in three stages as shown below.
You can set the delay time before the monitor enters the power
saving mode using the OSD. Set the time according to “Setting
the power saving delay time” on page 1-6.
Note
If no video signal is input to the monitor, the “NO INPUT SIG-
NAL” message (page 1-8) appears.  After the delay time has
passed, the power saving function automatically puts the monitor
into the active-off mode and the u indicator lights up orange. Once
the horizontal and vertical sync signals are detected, the monitor
automatically resumes its normal operation mode.
1
2
3
4
5
Power consumption
mode
Normal operation
Standby (1st mode)
Suspend (2nd mode)
Active-off (3rd mode)
Power-off
Power
consumption
 160 W
 100 W
 15 W
 5 W
0 W
Horizontal
sync signal
present
absent
present
absent
Vertical
sync signal
present
present
absent
absent
Screen
active
blank
blank
blank
u
 
indicator
Green
Green and orange
alternate
Green and orange
alternate
Orange
Off
Recovery time
Approx. 3 sec.
Approx. 3 sec.
Approx. 10 sec.
Failre
+B failure
Horizontal / Vertical Deflection
failure, Thermal protector
ABL protector
HV failure
Aging / Self Test
Power LED
Orange
Off
(0.5 sec)
(0.5 sec)
Orange
Off
(1.5 sec)
(0.5 sec)
Orange
Off
(0.5 sec)
(1.5 sec)
Orange
Off
Orange
Off
(0.25 sec)
(0.5 sec)
(0.25 sec)
(1.25 sec)
Orange
Off
Green
Off
(0.5 sec)
(0.5 sec)
(0.5 sec)
(0.5 sec)
Aging Mode (Video Aging) : During Power Save, press “MENU” key for longer than 2 second.
Self Test (OSD Color Bar)
: During Power Save, press “CONTRAST” + (
/) key for longer than 2 second.
Reliability Check Mode
: During Power Save, press “CONTRAST” – (
?) key for longer than 2 second.
DIAGNOSIS
Page of 55
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