Uniwell LX-5700 Repair Manual page 36

1 2
H
G
CN5
KD-9SA-L2
RS232C JW2
5 CTS 1
9 2
DTR
F
4 RTS 3
8 DCD 4
3 5
/RXD
7 6
GND
2 /TXD 7
6 8
VCC
1 9
10
11
12
JS-1200-12
CN15
TM11R-5L-88 1/4W RAXIAL
E RS-485 ( - )
1K 1/4W
(R5)
1
DATA+
2
DATA-
3 CTLA+
4
5
220 1/4W
(R3)
6 CTLA-
7
8
1/4W RAXIAL
F.G
D
C
B
A
1 2
3 4
CN3
CTS
1
DTR
2
RTS
3
DCD
4
/RXD
5
GND
6
/TXD
7
VCC
8
DATA+
9
DATA-
10
CTLA+
11
CTLA-
12
C28 C29 C30 C27
JS-1200-12
1000pF 1000pF 1000pF 1000pF
(IF)
PTH8L09BD4R7N2B550
CTLA- PTC3
CTLA-
CTLA+
PTC2
DATA-
PTC5
DATA-
DATA+ PTC4
DATA+
THE MARK "(-)","NU-" SHOWS THE PART WHICH ISN'T MOUNTED.
3 4
5 6
PTC1
miniSMDC050
C34
100u/10V
/RXD0 R50
CTS0 33
DCD0 R46
33
RTS0
DTR0 R47
33
/TXD0
C31 C26
1000pF 1000pF
R36
47K
R41
X 4
47K
14
CTLA+
D1OUT
13
D1OUT
R33 2.2K
2
RC1IN+
1
RC1IN-
R38 2.2K
10
D2OUT
11
D2OUT
R39 2.2K
6
RC2IN+
7
RC2IN-
2.2K
R37
IC31
R42
R40
47K
47K
TZ3
TZ1 TZ4 TZ2
x 4
SMAJ6.5CA-TR
5 6
PRINT
7
C41 C37
0.1u 100u/10V
IC4
2 15
RX1 DO1
R48 4 13
RX2 DO2
6 11
33
RX3 DO3
R49 3 14
TX1 DI1
5 12
33
TX2 DI2
R45 7 10
TX3 DI3
33
8 1
VSS +VDD
9 16
GND VCC
MC145406F
C33
C32 C25
0.1u 0.1u 0.1u
R126 R186
4.7K
C40
IC13E
4.7K
10 11
0.1u R185
74HC04
10K
C148
4
D1EN
1000pF
15
D1IN
3
RC1OUT
IC13F
12 12 13
D2EN
9 C84
D2IN
5 74HC04
RC2OUT 1000pF
SN751178NS
Uniwell Corporation
MPU131-C SERIAL CIRCUIT
Title
GW.Lai
Drawened By: Date:
Page
Anthony Liu
Approves By:
Revision:
7
INDEX
8
LX57XX
H
G
VCC
GND
RXA0
CTS0#
DCD0#
F
RTS0#
DTR0#
TXA0
VLL
VMM
E
RTS1#
D
CTS1#
DTR1#
TXA1
RXA1
C
PGND
B
20-JULY-2004
A
of
7 10
1.07
8