Owner`s manual

97
SYMPTOM: NO PORT LEDs ILLUMINATE
CAUSE: PC serial cable.
SOLUTIONS:
1) Check cabling between PC and Model 24.
2) Check handshaking lines using TERM program. All
lines (except DCD which is not used) should be
high. If lines are high, turn Model 24 off. You
should notice CTS and DSR lines go low. If they
do not go low, there is a good chance cable is
incorrect (see Appendix A ). Typing characters
from TERM should illuminate PC LED on Model
24.
3) Check installation procedures for PC's serial port.
COM1 must generate an interrupt on IRQ4 (COM2
on IRQ3). Also, check any jumpers for defining
port configuration which should be jumpered for
DTE, not DCE.
CAUSE: PC parallel cable.
SOLUTION: Check cable's continuity and pin
configuration.
CAUSE: Model 24 is connected to a non-designated
COM port.
SOLUTION: Make sure Model 24 is connected to a
designated PC COM port. Check using TERM
program. Turn Model 24 off, and you should not
see CTS/DSR lines go low if you are on a
non-designated COM port.
CAUSE: PC is connected to Model 24 port which is
configured as an printer port.
SOLUTION: Enter Model 24's configuration mode and
in the Status menu, check the port designation.