Buffalo FTD-G731AS, Service Manual

Page: 23 / 57

BUFFALO Service Manual
23
DVIDDC_5V
BIN 4
2004/09/05
ADD ESD
Solution
D306
BAV99
3
1 2
GNDG 4
CLK- 4
R318
10K 1/16W
R339 4.7K 1/16W
R313
2.2K 1/16W
C321
0.1uF
C323
0.1uF
C319
0.1uF
DDC_CLK 6
DSUBDDC_5V
FB301 0 1/16W
D312
BAV99
3
1 2
R340
0 1/16W
8/9/2004-Add DDC/CI
Solution
R307 68 1/16W
R336 4.7K 1/16W
operating
voltage-2.5v-5.5v
VCC5V
R326
75
1/16W
R306 68 1/16W
CLK+ 4
VGA_CON
C317
0.1uF
DDC_DAT 6
DVI5V
DSUBDDC_5V
R309 100 1/16W
D321
TZMC5V6-GS08
C313
0.1uF
C307 0.001uF
R330
NC
R334
NC
PC5V
C308 0.047uF
FB302 0 1/16W
D308
BAV99
3
1 2
C303
NC
4/2/2004-Add W/P control by MCU
VCC5V
TXD 6
R319 100 1/16W
G+ 4
VCC5V
C320
0.1uF
D313
BAV99
3
1 2
D305
BAV70
3
1 2
DDC_WP 6
DDC_DAT 6
VCC5V
CN302
JACK NC
1
2
3
4
5
6
7
8
25
28
9
10
11
12
13
14
15
16
26
29
17
18
19
20
21
22
23
24
27
31 32
DAT2-
DAT2+
2/4shield
DAT4-
DAT4+
DDC SCL
DDC SDA
VSYNC
R
HSYNC
DAT1-
DAT1+
1/3shield
DAT3-
DAT3+
+5V
SYNC GND
HPD
G
RGB GND
DAT0-
DAT0+
0/5shield
DAT5-
DAT5+
clk shield
clk+
clk-
B
31 32
D304
BAV70
3
1 2
Q301
PMBS3904
C
E
B
R+ 4
D314
LL5232B 5.6V 5%
VCC5V
R301 33 1/16W
R302 33 1/16W
CLK_DDC2
R312 100 1/16W
FB304 430 OHM
R331
10K 1/16W
R344 10 1/16W
U302
M24C02WMN6
1
2
3
4 5
6
7
8
A0
A1
A2
GND SDA
SCL
WP
VCC
VSYNC 4
R329
NC
DAT_DDC2
D316
LL5232B 5.6V 5%
D310
BAV99
3
1 2
R347 10 1/16W
2004/08/19 ADD
D309
BAV99
3
1 2
C301
NC
DVIDDC_5V
D322
TZMC5V6-GS08 NC
R323
10K 1/16W
C316
0.1uF
R346 10 1/16W
R348 10 1/16W
GIN 4
R327
75
1/16W
C314
0.1uF
D317
TZMC5V6-GS08
C325
0.1uF
C318
0.1uF
D324
BAV99/NC
3
1 2
R342 NC
R320 100 1/16W
D325
MLL5232B 5.6V
D315
LL5232B 5.6V 5%
VSI
D307
BAV99
3
1 2
R337 4.7K 1/16W
HSYNC 4
operating
voltage-2.5v-5.5v
B+ 4
D320
TZMC5V6-GS08
C324
0.1uF
RXD 6
4/2/2004-Add R329,R330
DVI5V
R338
10K 1/16W
R315 100 1/16W
R305 68 1/16W
R303 33 1/16W
R- 4
U303
74VHC4053
12
11
2
1
5
4
6
13
10
9
14
15
3
7
8
16
0A
SA
0B
1B
0C
ZC
INH
1A
SB
SC
ZA
ZB
1C
VEE
GND
VCC
R333
NC
R341 NC
D318
TZMC5V6-GS08
ST_DET1 6
PC5V
DAT_DDC
R317
10K 1/16W
RIN 4
GNDB 4
R332 1K 1/16W
D301
BAV99
3
1 2
C310 0.047uF
D323
TZMC5V6-GS08 NC
FB303 0 1/16W
VCC5V
DVI_DET 6
C311
47pF
DVI_HPD
R325
75 1/16W
8/9/2004-Add DVI
CABLE Detect
R304 470 1/16W
R345 10 1/16W
GNDR 4
B- 4
R349 10 1/16W
C306 0.047uF
C322
0.1uF
INPUT B
TSU16/56AK FOR MYSON512 SWITCH
C
3 6 Wednesday, October 06, 2004
Title
Size Document Number Rev
Date: Sheet of
VCC5V
D302
BAV99
3
1 2
R350 10 1/16W
C304 0.047uF
4/2/2004-Add D324 Solution
D311
BAV99
3
1 2
U301
M24C02WMN6
1
2
3
4 5
6
7
8
A0
A1
A2
GND SDA
SCL
WP
VCC
D319
TZMC5V6-GS08
R314
2.2K 1/16W
R343 10 1/16W
R324
10K 1/16W
DDCCI_SEL 6
HSI
C309 0.047uF
R316 100 1/16W
R308
10K 1/16W
R335
4.7K 1/16W
D326
BAV70
3
1 2
VCC5V
CLK_DDC
D303
BAV99
3
1 2
R311 1K 1/16W
G- 4
R321
10K 1/16W
C305 0.047uF
SOG 4
C302
NC
C315
0.1uF
R310 1K 1/16W
C312
220pF
DDC_CLK 6
VCC5V
CN301
DB15
1
6
2
7
3
8
4
9
5
11
12
13
14
15
10
16 17