Acer Extensa 61X Service Manual page 229

+5V
FDDCHG
4 5 6
D7
RB731U
FDDDCHG 3 2 1
RP22
PAUTOFD# 1 10
PERROR# 2 9 PSLCT
PINIT# 3 8 PPE
PSLCTIN# 4 7 PACK#
5 6
SRP4K7
RP21
PPD0 1 10
PPD1 2 9 PPD4
PPD2 3 8 PPD5
PPD3 4 7 PPD6
5 6 PPD7
SRP4K7
RP23
PD0 1 8 PPD0
PD1 2 7 PPD1
PD2 3 6 PPD2
PD3 PPD3
4 5
SRN33
RP24
PD4 PPD4
1 8
PD5 PPD5
2 7
PD6 PPD6
3 6
PD7 PPD7
4 5
SRN33
+5V FDDDCHG
U19E
1
4
R21
FDDIN# 11 10 1 2
560KR3
7 SSHC14 C172
SCD1U
FDD5V
EXTINDEX#
EXTDR1#
EXT3_MODE
EXTWDATA#
R27
FDDIN# 1 2
8 FDDIN#
330R3
## CIRCUIT MODIFY
EXTRDATA#
EXTHDSEL
THIS CONN. IS BUILDED BY TOP VIEW,
WE COUNT THE PINS MUST MIRROR IT.
+5V
U24
24
VCC B9
EXTINDEX# 2
B0 A9
3
14 INDEX# A0 A8
4
11 DR1# A1 B8
EXTDR1# 5
B1 B7
EXT3_MODE 6
B2 A7
7
8,14 3_MODE A2 A6
8
11 HDSEL A3 B6
EXTHDSEL 9
B3 B5
EXTWDATA# 10
B4 A5
11
14 WDATA# A4
1
OEA
FDDRDY# 13
OEB
12
GND
QQST3384
+5V
U1
24
VCC B9
EXTRDATA# 2
B0 A9
3
14 RDATA# A0 A8
4
11,14 TRK0# A1 B8
EXTTRK0# 5
B1 B7
EXTWRTPRT# 6
B2 A7
7
11,14 WRTPRT# A2 A6
8
A3 B6
9
B3 B5
10
B4 A5
11
A4
1
OEA
FDDRDY# 13
OEB
12
GND
QQST3384
+5V
+5V FDD5V
1
R115
+5V 10KR3 U23
U19F 1 8
1
GND OUT
4
2 2 7
IN OUT
R116
3 6
IN OUT
13 12 1 2 4 5
EN# OUT
100KR3 TPS2013D
7 SSHC14
C9
FDDCHG
SCD1U
FDD5V
C10
CN5
27
SC680P
1 14
2 15
3 16 EXTDSKCHG
4 17
5 18 EXTMTR1#
6 19 EXTFDIR
7 20 EXTSTEP#
8 21
9 22
10 23 EXTWGATE#
11 24
12 25 EXTTRK0#
13 26 EXTWRTPRT#
28
AMP-CONN26
EXT. FDD CONN.
11
PD[0..7]
23 EXTDSKCHG
22
11
DSKCHG
21
MTR1# 11
20 EXTMTR1#
19 EXTFDIR
18
11
FDIR
17
STEP# 11
16 EXTSTEP#
15 EXTWGATE#
14
WGATE# 11,14
11 PSTROB#
11 PAUTOFD#
11 PERROR#
11
PINIT#
23
22
11 PSLCTIN#
21
20
19
18
17
16
15
14
11
11
11
C165 C8
SCD1U SC10U16V
CN4
10
5
9
4
8
3
7
2
6
1
11
RS232-9-4-D
C151
SC680P
C152
SC680P
+5V
FDD5V
1
4
R119
1 2 5
100KR3
7
C7
SCD1U
C142
SC150P
C136
SC150P
C135
SC150P
C134
SC150P
PSTROB#
PAUTOFD#
PPD0
PERROR#
PPD1
PINIT#
PPD2
PSLCTIN#
PPD3
PPD4
PPD5
PPD6
PPD7
PACK#
PACK#
R114
1 2
11 BUSYP
33R3 PPE
PPE
PSLCT
PSLCT
1
RX11
+5V 10KR3
2
C145
SC150P
C144
SC150P
C143
SC150P
11
PRI1#
PDTR1# 11
11
PCTS1#
11
PSOUT1
PRTS1# 11
11
PSIN1
11
PDSR1#
11
PDCD1#
C153 C156
SC680P SC680P
C154 C157
SC680P SC680P
C158
C155 SC680P
SC680P
+5V
U5C
1
U38C 4
FDDIN#
9
FDDRDY#
8
6 10
SSHCT32
7
SSHC14
C137 C141
SC150P SC150P
C140
SC150P
C139
SC150P
C138 CN3
SC150P
26
1
14
2
15
3
16
4
17
5
18
6
19
7
20
8
21
9
22
10
23
11
24
12
25
13
27
PRNT25-4-D
C146 C150
SC150P SC150P
C149
SC150P
C148
SC150P
C147
SC150P
ACER
TAIPEI TAIWAN R.O.C
Title
370P/J (||PORT,SERIAL PORT,EXT. FDD)
Size Document Number REV
A3 96149 SC
Date: February 12, 1997 Sheet 12 of 25