Motorola 326X V.34 User Manual page 113

V.34, v.34-sdc, and v.32bis series modem
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326X Series Modem Troubleshooting Guide
Problem
Diagnosis/Test
During installation:
Modem won't power up
Check AC power.
Check modem's power switch.
Modem fails self test
Repeat power-up sequence.
(front panel displays
error code)
Modem doesn't come up
Check DIP Switch #6 on
in ready state— "326X
modem's rear panel.
Ready" on front panel
display
While operating the 326X as a dial modem:
ACU CONFIGURA-
TION
No response to ACU
Check that TD LED on front
command
panel lights when commands are
being sent to the modem.
Check modem's configuration:
Double echo on charac-
Check echo setting on data
ters typed
terminal equipment and modem.
Check the terminal setup of the
communications software.
CALL ESTABLISHMENT
Modem won't answer
Check the modem's
configuration:
• DTE Rate (AT
*
DE)
• ACU Form
• Char Length
*
• Parity (AT
RP)
• Result Code (ATQ)
• Answer (AT
*
AA)
• DTR (AT&D)
Possible Solution
Ensure AC outlet is active.
Turn on power switch.
If modem fails once again, call Motorola Customer Sup-
port and report the error code.
• Ensure DIP Switch #6 is in the Off (up) position.
• Power cycle the modem.
• If light does not come on, check that cables are prop-
erly connected.
• Check the communications software package for
correct communications port configuration.
• Check that the communications software package's
baud rate is set to a rate that the modem's autobaud
feature supports.
• Ensure ACU is compatible with modem's
configuration.
• Make sure the DTE is set to a valid character format
to operate the modem's autobaud feature (see
Chapter 5 for details on this feature).
• If modem still does not respond after modifying con-
figuration, perform a local analog loopback (LAL)
test. (Refer to the end of this chapter for details on
tests supported, as well as instructions for initiating
tests.)
• If LAL fails, contact Motorola Customer Support.
If both echo settings are on, turn one off. (In some data
terminals, echo is sometimes referred to as half- or full-
duplex.) If this does not solve the problem, contact
Motorola Customer Support.
Ensure that Answer is not set to Manual.
Set DTR=High (AT&D0).
Troubleshooting Guide 6-3

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