Read Sharp UP-5300 (serv.man4) Service Manual online
19. COM1, COM2, COM3/5, and
COM4/6 Connector
1) COM1 & COM2
•
D-SUB 9pin Connector
•
CI signal of COM1 or COM2 and +5V power supply can be
switched in order to supply +5V power.
switched in order to supply +5V power.
Connector Specifications
D-SUB9
Pin No.
Signal
Function
I/O
1
CD
Data Carrier Detect
I
2
RD
Receive Data
I
3
SD
Send Data
O
4
ER
Data Terminal Ready
O
5
SG
Signal Ground
—
6
DR
Data set Ready
I
7
RS
Request to Send
O
8
CS
Clear to Send
I
9
CI/+5V
Ring Indicate/+5V
I/–
Main PWB
S2 = COM1: 1 = +5V
3 = CI
S1 = COM2: 1 = +5V
3 = CI
S2
13
S1
13
3
1
3
1
S2
3
1
3
S1
1
+ 5 V
C I
C O M 1
C O M 2
S2
S1
UP-5300VI
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