User Guide
Schematic Diagrams
B - 24 Serial & Parallel Port (71-L27T0-002)
B.Schematic Diagrams
Serial & Parallel Port
Sheet 23 of 29
Serial & Parallel Port
PD4
R568
1K
CTSA# 22
C302
220p
LPTINIT# 22
T74
RTS1#
RN66 8P4R*2.7K1
2
3
4
7
6
5
8
SIN
LPPE
D31 1N4148
CA
LPSLCT
PD6
C295
220p
Z2314
CTS1#
D33 1N4148
CA
K Type
使用 之精密電容
R254
BEAD BK1608HS-241
R251
BEAD BK1608HS-241
CA293 0.1u
DCDA# 22
Z2307
RINGIN#
C297
220p
PD5
SOUT
R584 BEAD BK1608HS-241
MINIPCI-RI#19
TXD1
R256
BEAD BK1608HS-241
R260
BEAD BK1608HS-241
R561
4.7K
C299
220p
C187
180p
RTS#
+5V
R582
BEAD BK1608HS-241
LPSLCT
Z2304
LPD7
C300
220p
RIA# 22
SINA 22
GND1~2=GND
CTS#
Z2310
C189
180p
PD[0..7]
C183
180p
R245
BEAD BK1608HS-241
R257
BEAD BK1608HS-241
LPBUSY
PD3
RN65 8P4R*2.7K1
2
3
4
7
6
5
8
DSRA# 22
LPERR#
LPD6
PD7
DTR#
R581
BEAD BK1608HS-241
CA292 0.1u
LPD1
DSR1#
R255
BEAD BK1608HS-241
CA294 0.1u
C284
1u
RN67 8P4R*2.7K1
2
3
4
7
6
5
8
C301
220p
SOUTA 22
CN21
COM1
5
9
4
8
3
7
2
6
1
LPTSLCT 22
LPINIT#
R247
BEAD BK1608HS-241
R259
BEAD BK1608HS-241
RING#
Z2316
C182
180p
LPTACK# 22
LPACK#
Z2313
LPTBUSY 22
LAN-RI#20
PD0
PCMCIA-RI#17
DTR1#
R580
BEAD BK1608HS-241
LPTSLIN# 22
Z2306
D30 1N4148
CA
C179
180p
RTS#
Z2309
LPD2
CA287
0.1u
R250
BEAD BK1608HS-241
C296
220p
LPTSTB# 22
C181
180p
LPAFD#
C298
220p
C178
180p
LPD0
LPAFD#
C192
180p
C185
180p
RN64 8P4R*2.7K1
2
3
4
7
6
5
8
R585
BEAD BK1608HS-241
CN20
PRINT PORT
13
25
12
24
11
23
10
22
9
21
8
20
7
19
6
18
5
17
4
16
3
15
2
14
1
R567
1K
+5V
DTR#
Z2305
LPD5
LPACK#
CA285
0.1u
RTSA# 22
LPPE
R248
BEAD BK1608HS-241
C190
180p
L53 0_0805
C180
180p
LPTPE 22
RXD1
DCD#
SB3V
SIN
Z2312
CA286
0.1u
C186
180p
C188
180p
LPTAFD# 22
PD[0..7] 22
Z2302
LPD5
LPD3
CA291 0.1u
C194
180p
LPSTB#
L52
0_0805
LPSLIN#
LPD2
LPERR#
SOUT
C193
180p
R583
BEAD BK1608HS-241
+3V 3..6,11..17,19..22,24,26..29
CA288
0.1u
R258
BEAD BK1608HS-241
DCD1#
LPD0
C184
180p
R252
BEAD BK1608HS-241
DSR#
CA165
0.1u
Z2303
LPTERR# 22
R249
BEAD BK1608HS-241
R579
BEAD BK1608HS-241
U37
MAX3243
13
12
19
14
18
17
16
15
23
22
20
21
28
27
10
4
9
11
5
6
7
8
26
1
3
242
25
TI2
TI3
RO1
TI1
RO2
RO3
RO4
RO5
FON
FOFF#
RO2B
INV#
C1+
V+
TO2
RI1
TO1
TO3
RI2
RI3
RI4
RI5
VCC
C2+
V-
C1-C2-
GND
R261
2.7K
Parts No : 08-106
RING1#
Q45
2N3904
B
E C
Z2315
C191
180p
GND2=GND
DCD#
LPD7
LPBUSY
+5V 4,11..14,16,17,19,21,22,24..29
RINGIN#
Z2301
LPINIT#
LPD1
RING#
CA166
0.1u
+3V
R253
BEAD BK1608HS-241
DTRA# 22
D32 1N4148
CA
RI# 14
GND1=GND
LPD4
D36
1N4148
A C
PD2
LPSLIN#
R262
BEAD BK1608HS-241
LPD6
Z2311
DSR#
LPD3
R578
BEAD BK1608HS-241
LPSTB#
PD1
CTS#
R246
BEAD BK1608HS-241
SB3V 14..16,19,20,22,24,26
+12V 12,13,16,17,22,24..28
Z2308
LPD4