Circuit Diagram (Main Pcb 14/15) [Serial I/F] - Tally Dascom 7010 Series Maintenance Manual

1 2
D
C106
1u/B16
C107
1u/B16
C109
C
1u/B16
TXD0
2 TXD0
LDTR0
2 LDTR0
RXD0
6 PLDRXDI
LDSR0
2 LDSR0
2,10 RESET
B
A
1 2

Circuit Diagram (Main PCB 14/15) [Serial I/F]

3 4
V3R3
U24
19
Vcc
V5R4
T345
T344
2 3
C1+ V+
C108
1u/B16
4
C1-
T346
T347
5 7 T348
C2+ V-
C110
6 1u/B16
C2-
T349
13 17
T1I T1O
T350
12 8
T2I T2O
15 16
R1O R1I
T352
10 9
R2O R2I
11
1
EN NC1
20 14
SHDN NC2
18
GND
ZT3222LEEY
3 4
5 6
V5R4
R176 R177
3.3k *3.3k
R178 *0
R179 0
R180 *0
R181 0
R176 R177 R178 R179 R180
RTS NA 0 0 NA 0
DTR
0 NA NA 0 NA
5
6
6-17
7
RS232C I/F
V5R0
FG1
Lock_pin
J18
1
14
T339 TXD 2
15
T340 RXD 3
16
T341 RTS 4
17
T342 CTS 5
18
T343 DSR 6
19
7
20
8
21
9
22
10
23
11
24
12
25
13
DBR40-251F100
T351
DTR
FG2
Lock_pin
R181
NA
0
Title
MAIN PCB - SERIAL I/F
Size Number
JN66701-0
A4
Date: Sheet of
File: Drawn By:
7
8
D
C
B
A
(14/15)
Revision
A
8