Dell P780 - 17" CRT Display, Service Manual

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P780
POWER MANAGEMENT
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.
TIMING SPECIFICATION
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.
Power consumption Screen Horizontal Vertical Power Recovery time indicator
mode (video) sync signal sync signal consumption
1 Normal operation active yes yes < 120 W -- Green
2 Standby (1st mode) blank no yes < 15 W Approx. 3 sec. Green and Orange
Alternate
3 Suspend (2nd mode) blank yes no < 15 W Approx. 3 sec. Green and Orange
Alternate
4 Active-off (3rd mode) blank no no < 3 W Approx. 10 sec. Orange
5 Power-off -- -- -- 0 W -- Off
Status Area of Failure LED Indication
1 Failure 1 HV or +B Amber (0.5 second)/Off (0.5 second)
2 Failure 2 Amber (1.5 second)/Off (0.5 second)
3 Failure 3 ABL Amber (0.5 second)/Off (1.5 second)
4 Aging/Self Test Amber (0.5 second)/Off (0.5 second)/
Green (0.5 second)/Off (0.5 second)
H Stop or V Stop
MODE 1
Resolution (H x V)
Dot Clock (MHz)
640 x 480
25.175
720 x 400
28.321
640 x 480
31.500
HORIZONTAL
Hor. Freq. (kHz)
H-Total
H-Blanking
H-Front Porch
H-Sync.
H-Back Porch
H-Active
(
µ
sec)
VERTICAL
Ver. Freq. (Hz)
V-Total
V-Blanking
V-Front Porch
V-Sync.
V-Back Porch
V-Active
(lines)
SYNC.
Int (G)
Ext (H/V)/Polarity
Ext (CS)/Polarity
Int/Non Int
31.469
31.778
6.356
0.636
3.813
1.907
25.422
59.940
525
45
10
2
33
480
No
Yes -/-
No
Non Int
640 x 480
36.000
800 x 600
49.500
800 x 600
56.250
1024 x 768
78.750
1024 x 768
94.500
1280 x 1024
135.000
1600 x 1200
31.468
31.779
6.356
0.636
3.178
2.542
25.423
70.084
449
49
13
2
34
400
No
Yes -/+
No
Non Int
37.500
26.667
6.349
0.508
2.032
3.810
20.317
75.000
500
20
1
3
16
480
No
Yes -/-
No
Non Int
43.269
23.111
5.333
1.556
1.556
2.222
17.778
85.008
509
29
1
3
25
480
No
Yes -/-
No
Non Int
46.875
21.333
5.172
0.323
1.616
3.232
16.162
75.000
625
25
1
3
21
600
No
Yes +/+
No
Non Int
53.674
18.631
4.409
0.569
1.138
2.702
14.222
85.061
631
31
1
3
27
600
No
Yes +/+
No
Non Int
60.023
16.660
3.657
0.203
1.219
2.235
13.003
75.029
800
32
1
3
28
768
No
Yes +/+
No
Non Int
68.677
14.561
3.725
0.508
1.016
2.201
10.836
84.997
808
40
1
3
36
768
No
Yes +/+
No
Non Int
79.976
12.504
3.022
0.119
1.067
1.837
9.481
75.025
1066
42
1
3
38
1024
No
Yes +/+
No
Non Int
75.000
13.333
3.457
0.395
1.185
1.877
9.877
60.000
1250
50
1
3
46
1200
No
Yes +/+
No
Non Int
162.000