Sony Trinitron CPD-420GS, Service Manual

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CPD-420GS/GST
—2—
The monitor has three Power Saving modes. By sensing the
absence of a video signal from the computer, it reduces power
consumption as follows: NOTE: If no video signal is input to the monitor, the “NO
INPUT SIGNAL” message appears. After about 30
seconds, the Power Saving function automatically puts
the monitor into active-off mode and the indicator
lights up orange. Once the monitor detects horizontal
and vertical sync signals, the monitor automatically
resumes normal operation mode.
SELF DIAGNOSIS FUNCTION
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.
TIMING SPECIFICATION
State
Power
Consumption
Required Recovery
Time
Power Indicator
1 Normal Operation
≤
130W
—
Green on
2 Standby (1st mode)
≤
15W approx. 5 sec. Green and orange alternate
3 Suspend (2nd mode)
≤
15W approx. 5 sec. Green and orange alternate
4 Active-off (3rd mode)
≤
8W approx. 5 sec. Orange
5 Power-off 0W
—
Off
6 Failure modes — — See below
Status Area of Failure LED Indication
1 Failure 1 HV or B+
Orange (0.5 second)/Off (0.5 second)
2 Failure 2 H Stop, V Stop, Thermal Orange (1.5 second)/Off (0.5 second)
3 Failure 3 ABL
Orange (0.5 second)/Off (1.5 second)
4 Aging/Self Test
Orange (0.5 second)/Off (0.5 second)/
Green (0.5 second)/Off (0.5 second)
MODE 1 2 3
Resolution (H x V)
720 x 400 1280 x 960 1600 x 1200
Dot Clock (MHz) 28.321 148.500 202.500
HORIZONTAL
Hor. Freq. (kHz) 31.468 85.938 93.750
H-Total 31.779 11.636 10.667
H-Blanking 6.356 3.017 2.765
H-Front Porch 0.636 0.431 0.316
H-Sync. 3.178 1.077 0.948
H-Back Porch 2.542 1.508 1.501
H-Active
(µsec)
25.423 8.620 7.901
VERTICAL
Ver. Freq. (Hz) 70.084 85.002 75.000
V-Total 449 1011 1250
B-Blanking 49 51 50
V-Front Porch 13 1 1
V-Sync. 2 3 3
V-Back Porch 34 47 46
V-Active
(lines)
400 960 1200
SYNC.
Int (G) NO NO NO
Ext (H/V)/Polarity YES -/+ YES +/+ YES +/+
Ext (CS)/Polarity NO NO NO
Int/Non Int Non Int Non Int Non Int
POWER SAVING FUNCTION