Schematic Diagram; Main Board - Dell E228WFP Service Manual

22"LCD Color Monitor

7. Schematic Diagram

7.1 Main Board

CN201
RX0-IN
17
RX0+IN
18
RX1+IN 10
19
20
12
21
22
DVI_5V 14
RXC+IN
23
RXC-IN
24
HOT_PLUG 16
C3
C5
C4
GND
DVI_5V +5V
JACK
R212
D209
BAV70
U201
1 8
NC/NC/NC/E0/E0 VCC
2 7
NC/NC/E1/E1/E1 WC
3 6
NC/E2/E2/E2/E2 SCL
4 5
VSS SDA
M24C02-WMN6TP
GND
R244
VGA_5V +5V
10KΩ 1/10W
D210
BAV70
C214
0.1uF 16V
GND
U202
1
NC/NC/NC/E0/E0 VCC
2
NC/NC/E1/E1/E1 WC
3
NC/E2/E2/E2/E2 SCL
4
VSS SDA
M24C02-WMN6TP
GND
RX2-IN
RX2+IN
1
9 RX1-IN
RX1+IN
2
DVI_5V
R201 10KΩ 1/10W ZD201
DVI_5V
3
11 HOT_PLUG UDZS5.6B
RX0-IN
4 GND
RX0+IN
5
13 RXC+IN
RXC-IN
SCL_IN
6
SDA_IN
7
15 R210 DVI_HPD D201
BAV99
8 220Ω 1/10W
ZD202
UDZS5.6B
C1
GND
Q202
PMBS3904
C5
C262
0.1uF 16V
C2
GND GND GND
GND
R211 R213
3
C209
DDC_SCL_DVI (3)
0.1uF 16V
DDC_SDA_DVI (3)
1
2
GND
SCL_IN R215 220Ω 1/10W
SDA_IN R216 220Ω 1/10W
R228 220Ω 1/10W
ZD203 ZD204 HS_in
UDZS5.6B
UDZS5.6B VS_IN
+5V
GND
Q201 ZD207
8/16 2N7002E
DVI_EDID_WP (3)
(3) DDC_SDA_VGA
GND GND
R226 R227
4.7KΩ 1/10W R232
220Ω 1/10W
ZD211
8 DDC_SDA_A ZD210
7 UDZS5.6B
6 DDC_SCL_A UDZS5.6B
5
(3) DDC_SCL_VGA
GND
D202 D203 D204 D205 D206
BAV99 BAV99 BAV99 BAV99 BAV99
R225 GND
HDCP_RST (3)
4.7KΩ 1/10W
R262
4.7KΩ 1/10W C222 +5V C221 +5V
0.1uF 16V 0.1uF 16V
ADD 6/23
GND GND
D211 D212
VGA_5V BAV99 BAV99
R242
4.7KΩ 1/10W
CN203
DB15
11 1
6
12 2
7
13 3
8
14 4
9
15 5 R237 220Ω 1/10W VGA_PLUG
10
ZD208 ZD212 ZD209
UDZS5.6B
UDZS5.6B UDZS5.6B
Pins 6/7/8 are R/G/B
return lines resp. GND
GND GND
R243 0Ω 1/10W R238
FB204 (8 mil)
R239
430 OHM
R240 C217 R241 C218
2.2KΩ 1/10W 22pF 2.2KΩ 1/10W 22pF
29
R202 10Ω 1/10W
RX2- (3)
R203 10Ω 1/10W
RX2+ (3)
R204 10Ω 1/10W
RX1- (3)
R205 10Ω 1/10W
RX1+ (3)
R206 10Ω 1/10W
RX0- (3)
R207 10Ω 1/10W
RX0+ (3)
R208 10Ω 1/10W
RXC+ (3)
R209 10Ω 1/10W
RXC- (3)
D207 D208
BAV99 BAV99
+5V
+3.3V_VDD
R214
C201
1000pF/50V 10KΩ 1/10W
DVI_HPD R217 22KΩ 1/10W
VGA_PLUG R218 33KΩ 1/10W
CABLE_DET
C219 +5V
0.1uF 16V C220
0.1uF 16V
GND D213 GND
BAV99
FB201
(10 mil, ┰キ︽絬)
0.01uF
R220 C210
75Ω 1/10W
0.01uF
60 OHM R222 C211
100Ω 1/10W
FB202
0.01uF
R223 C212
75Ω 1/10W
0.01uF
60 OHM R224 C213
100Ω 1/10W
FB203
0.01uF
R229 C215
75Ω 1/10W
0.01uF
60 OHM R230 C216
100Ω 1/10W
R233 R234 R235
75Ω 1/10W
75Ω 1/10W 75Ω 1/10W 75-ohm terminating resistor
very close to the VGA
conn.
GND
220Ω 1/10W
VS (3)
220Ω 1/10W
HS (3)
TOP VICTORY ELECTRONICS.CO..LTD
Title
Input Connectors
Size Document Number
G2089-1-X-X-1-060905
Date: Thursday , September 21, 2006 Sheet 2 of
Dell E228WFP
(3)
RED+ (3)
RED- (3)
GREEN+ (3)
GREEN- (3)
BLUE+ (3)
BLUE- (3)
Rev
1
6