Power Management; Diagnosis Function - Sony GDM-C520 Service Manual

The power saving mode complies with the VESA Display Power Management Signaling standard. Each state of power management shall be activated
by the host computer terminating the appropriate sync signals. Blanking the video must precede termination of the sync signals. The elapsed time
counter shall also be controlled by the host computer. Reactivation of the monitor shall be accomplished from the host computer by re-establishing the
normal sync signal.
Power consumption
mode
1 Normal operation
2 Active-off* (deep sleep)** blank
3 Power-off
* When your computer enters power saving mode, the input signal is cut and NO SIGNAL appears on the screen before the
monitor enters active mode. After a few seconds, the monitor enters power saving mode.
* "Deep sleep" is power saving mode defined by the Environmental Protection Agency.
When a failure occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the problem. If there is more than
one error, the lamp will identify the first of the problem areas.
Status
1
Failure 1
2
Failure 2
3 Failure 3
4
Failure 4
5
Aging/Self Test
6
Out of scan range
Aging Mode (Video Aging):
Self Test (OSD Color Bar):
Reliability Check Mode:

POWER MANAGEMENT

Screen Horizontal Vertical
(video) sync signal sync signal consumption
active yes yes
no* no*
-- -- --

DIAGNOSIS FUNCTION

Area of Failure
+B
Horizontal/Vertical Deflection Failure
Thermal Protector
ABL Protector
HV Failure
During Power Save, press MENU button for longer than 2 seconds.
During Power Save, push up Control button for longer than 2 seconds.
During Power Save, push down Control button for longer than 2 seconds.
— 4 —
Power Recovery time
< 135 W --
< 3 W
0 W (approx) --
LED Indication
Amber (0.5 second) / Off (0.5 second)
Amber (1.5 second) / Off (0.5 second)
Amber (0.5 second) / Off (1.5 second)
Amber (0.25 second) / Off (0.25 second)
Amber (0.25 second) / Off (1.25 second)
Amber (0.5 second) / Off (0.5 second)
Green (0.5 second) / Off (0.5 second)
Green (OSD Indication)
GDM-C520/C520K
Indicator
Green
Orange
Off