Dell P780 - 17" CRT Display User Manual

P780
A BOARD SCHEMATIC DIAGRAM
— 25 —— 24 —— 23 —
Schematic diagrams
Block diagram
A
board
1
A
B
C
D
E
F
G
H
I
J
K
L
2345678910111213141516171819
1
2 3
1.1 Vp-p (H) 1.1 Vp-p (H)
1.2 Vp-p (H)
4 5
6
4.1 Vp-p (H) 4.0 Vp-p (H) 4.6 Vp-p (H)
7 8
9
59.3 Vp-p (H) 56.5 Vp-p (H) 58.7 Vp-p (H)
A BOARD WAVEFORMS
12
11
10
54.0 Vp-p (H)
52.2 Vp-p (H)
54.0 Vp-p (H)
A
[ VIDEO ]
— 22 —
1
A
B
C
D
E
F
2345678
NOTE:
Portions of this circuit marked as shown are high
voltage areas. Use care to prevent electric shocks
during inspection or repair.
— 26 —
A BOARD LOCATOR LIST
DIODE D105 A-5 IC
D001 E-8 D106 B-5 IC001 B-4
D002 E-2 D111 E-2 IC002 A-6
D003 E-2 D204 B-6 IC003 B-2
D004 E-2 D205 B-6 IC004 C-7
D005 F-6 D206 E-3 IC005 E-7
D007 F-5 D211 E-3 IC006 D-2
D008 F-5 D304 B-6
TRANSISTOR
D014 D-7 D305 B-7 Q001 D- 7
D015 E-2 D306 B-6 Q006 C-2
D104 B-6 D311 E-3
A BOARD IC VOLTAGE LIST
IC001 10 3.0 21 3.3 IC002 9 2.1 6 5.0 IC004 10 NC 7 10.4 6 4.6
pin volt 11 2.0 22 11.9 pin volt 10 11.8 7 4.1 pin volt 11 178.4 8 11.6 7 G ND
1 4 .0 12 0.2 23 GND 1 50.5 11 2.2 8 4.6 1 GND
IC005 IC006 8 0.3
2 4.6 13 0 24 2.1 2 GND
IC003 9 5.0 2 11.9 pin volt pin volt 9 0.3
3 3 .0 14 0 25 3.3 3 49.8 pin volt 10 0 3 4.8 1 NC 1 NC 10 4.6
4 2.6 15 0 26 GND 4 GND 1 0.5 11 N C 4 4.8 2 NC 2 0 11 GND
5 2 .6 16 11.9 27 2.3 5 49.7 2 1.1 12 0 5 4.8 3 N C 3 0 12 GND
6 3 .2 17 0 28 3.3 6 78.7 3 1.1 13 0 6 N C 4 G ND 4 0.5 13 NC
7 2 .0 18 0.9 29 11.9 7 GND 4 5.0 14 0 7 93.7 5 3.2 5 4.6 14 4. 9
8 4 .8 19 G ND 30 2. 6 8 2.1 5 3.6 15 0 8 94.0 6 3.0
All voltages in V
9 2.0 20 2.2 16 GND 9 101.8
A BOARD TRANSISTOR
VOLTAGE LIST
BCE
Q001 11.4 505 10.9
Q006 0.3 3.6 GN D
All voltages are in V
FOLDOUT 2 8/6/99, 10:42 AM2

Dell P780 - 17" CRT Display Specifications

General

Brand	Dell
Model	P780 - 17" CRT Display
Category	Monitor
Language	English