Radio Shack 26-3801 Service Manual page 10

V
2.
Connectors
,
Switches and Contrast Volume
(1)
Connectors
RS-232C
25
pins
(DB-25S)
Printer
26
pins (FRC2-C26-L13-ON)
Modem
8
pins
(TCS-4490)
Cassette
8
pins
(TCS-4480)
Bar Code Reader
9
pins
(A-7224)
System Bus
40
pins
(IC Socket)
AC Adaptor
s.S<P
(Center Minus)
C
2)
Switches
(a)
Power Switch
This is the PPC
system power switch.
OKJ
IflD
OFF ON
ED
OFF
Power OFF
Power ON
Fig.
1
(b)
ANS/CALL selector
This switch
is
used
to select
the
MODEM ANSWER mode
or
CALL mode.
ams
j
(HDi
oRiq-
AWS ED
0RI6-
Call mode
Answer mode
Fig.
2
(C)
Coupler/telephone selector
This switch
is
used
to
select COUPLER (acoustic coupler
connection) or TELEPHONE
(direct connection)
DfR
M
Acp DIR
ED
acp
COUPLER (ACOUSTIC
TELEPHONE
(DIRECT TELEPHONE
COUPLER CONNECTION)
LINE CONNECTION)
Fig.
3