Service manual

C – 15
C
IRCUIT
D
IAGRAMS
C. CIRCUIT DIAGRAMS
System Board (71-P2200-006) - Sheet 14 of 19
LP-200
6
PARALLEL & SERIAL PORTS
ÂÅ ¤Ñ ¹q ¸£ CLEVO CO.
14 19T uesday, June 20, 2000
Title
Size Docum ent Num ber Rev
Date: Sheet
of
+5V
+5V +3V
DCD A# DC D#
DT R#
DSR A # DS R#
SOUT
RXD A SI N
RT S #
RTSA# RT S #
DS R#
TXDA SOUT
RI NG #
CTSA# CT S #
SI N
DTRA# DT R#
CT S #
RI NG A # RI NG #
DC D#
Z1409
Z1413
Z1410
Z1415
Z1411
Z1412
Z1422 Z1423
Z1421RI NG # T Z 1412
T Z 1411
LPST B#
LPAF D#
LPAC K#
PD1
LPERR#
LPPE
PD3
PD6
PD7
LPD0
PD5
LPD2
LPSLI N#
LPD7
LPD4
LPD3
LPD1
LPSLCT
PD4
PD0
LPINIT #
LPD6
LPD5
Z1414
LPBUSY
PD2
C249
220p
R143
BEAD
R144
BEAD
R145
BEAD
R146
BEAD
R147
BEAD
R148
BEAD
R149
BEAD
R150
BEAD
C250
220p
C251
220p
C252
220p
C253
220p
C254
220p
C255
220p
C256
220p
U25
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
RO 1
TI1
RO 2
RO 3
RO 4
RO 5
FON
FOFF#
RO 2 B
INV#
C1+
V+
TO2
RI 1
TO1
TO3
RI 2
RI 3
RI 4
RI 5
VCC
C2+
V-
C1-C2-
GN D
CA98
0. 1u
CA100
0. 1u
CA101
0. 1u
CA99
0. 1u
CA102
0. 1u
C302
100p
R422
220K
R421
560K
D25
1N4148
A C
T299
T300
L92
0_0805
L93 0_0805
CN27
COM1
5
9
4
8
3
7
2
6
1
C244
47p
D15 1N4148
AC
FB4
C235
47p
FB10
CN28
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
FB6
R152 4. 7K
FB15
C242
47p
FB7
C238
47p
FB12
C243
47p
C237
47p R333 4. 7K
FB9
C236
47p
R153 4. 7KC246
47p
C240
47p
FB8
C241
47p
FB5
FB1
FB13
C239
47p
FB16
FB17
C247
47p
C245
47p
C152
47p
R151 4. 7K
C234
47p
FB3
C153
47p
C248
47p
FB11
FB2
FB14
DT R1# 1 3
TXD1 13
RT S 1# 13
DS R1# 13
RI NG 1# 13
RXD1 13
CT S 1# 13
DC D1# 1 3
DT R#
SO UT
RT S#
DS R#
RI NG #
SI N
CT S#
DC D#
LPD0 13
LPD1 13
LPD3 13
LPD2 13
LPD4 13
LPD5 13
LPD6 13
LPD7 13
RI A# 1 6
LPT B USY 13
+ 5V 2, 5, 6, 8,10,11, 12, 13,15, 16, 17,18, 19
+ 3V 2, 3, 4, 5,6,7, 8, 9,10, 11, 12, 13, 15,16,18, 19
PD[0..7] 13
LPT AF D# 13
LPTSTB# 13
LPT ER R# 13
LPT SLI N# 13
LPT SLCT 13
LPT AC K# 13
LPTINIT# 13
LPT P E 13
GND10~11=GND
71-P2200-006
A3
BK1608LL121-120 * 17
PIN27=GND
GND26=GND