IBM xSeries 300, Руководство по обслуживанию

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In the next steps, you are instructed to manipulate the front panel buttons of the
modem. Unless the step suggests otherwise, do not press them for longer than one
second.
6. ___ Set the modem power switch to OFF, then press the
↑
key and set the
power switch to ON. When the message HW SELFTEST RUNNING is shown,
release the
↑
key.
After about 15 seconds the message changes to DSP SELFTEST RUNNING
and then, after another 15 seconds, to:
If this sequence does not occur, the modem is defective. Replace it.
7. ___ The next steps can be done only if you have attached the modem to the
public switched network. Go to step 11 if you do not want to test the modem’s
public switched network interface.
8. ___ On the modem operator panel:
v
Press the
↑
key until the C108 (DTR) message appears on the top row.
v
Press the
→
key until the Forced On message appears on the bottom row.
v
Press the Enter key twice to select the option and to return to the modem
operational mode message.
9. ___ Dial the modem phone number from another telephone. You should hear
the ringing tones and then the 2100-Hz answer tone from the called modem in
the handset of the dialing telephone. If you hear the answer tone, go to step
11. Otherwise, continue with step 10.
10. ___ If you do not hear the modem answer tone, verify that the telephone line
is operating correctly. In most countries, you can do this by replacing the
modem with a handset and then attempting a second time to dial the modem
phone number from another telephone to verify that the handset rings
correctly.
Connect the modem to the public switched network again and try dialing the
modem phone number again. Observe the front panel OH light. This light turns
off when the modem answers. If this attempt to call the modem fails, the
modem is defective. Replace it.
11. ___ Set the modem power switch to OFF.
Note: Perform the following steps only if your DTE is already installed and
operational.
12. ___ Connect the 25-pin V.24 cable from the DTE to the 25-pin connector on
the modem rear panel. Fasten the connector retaining screws.
13. ___ Set the modem power switch to ON. Wait until the modem operational
message appears on the operator panel (about 30 seconds). If the modem is
connected to an asynchronous DTE which can send AT commands to the
modem, you can use the DTE to configure the modem to match your
communication system requirements. Otherwise, the modem can be configured
through the operator panel.
14. ___ Now the modem is ready for operation; you can try it with your system. If
you observe a basic system problem, such as the DTE not being able to send
commands to the modem successfully, verify again that your individual modem
configuration parameters match your system requirements. If you have a
problem while using the modem, see the problem determination information in
IBM 7857 Guide to Operation , GA13-1839.
Installing the NAS and Its Modem
1-34
2220 Setup and Service Guide