IBM 3745 Series, Installation And Maintenance Manual

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Step 3. ___ If you plan to use a leased line telecommunication cable, plug it into
the LL jack located on the modem rear panel, with the ferrite cylinder at
the modem side. If this modem is
not being installed in the United
Kingdom, connect the other end of the cable to the telecommunication
line.
Step 4. ___ Connect the modem power plug to a standard 3 pin grounded ac
outlet. Then, if this modem is being installed in the United Kingdom,
connect the telecommunication cables you have attached to the modem,
to the telecommunication lines.
Step 5. ___ You are now requested to observe the modem power on sequence.
This is the normal power on sequence:
¹
PWR light is turned on.
¹
HW SELFTEST RUNNING message is displayed for about 15
seconds.
¹
DSP SELFTEST RUNNING message is displayed for about 15
seconds.
Set the modem power switch to on. If the PWR light is not on, or the
message HW SELFTEST RUNNING is not appearing on the operator
panel within 10 seconds, the modem is defective and should be replaced.
This message remains on the display for about 15 seconds, then it is
changed by the power on sequence.
If the modem is set to the factory defaults, after about 30 seconds, the
operator panel shows:
┌────────────────────┐
│IBM 7857 AT CMD
aa
J
│
│td_ rd_ dsr
J
ec_ ll_│
└────────────────────┘
This operational message shows that the modem is set in AT command
mode for switched line operation and will auto-answer an incoming call.
The next steps reset the modem options to the factory default configuration 0.
Jump ahead to step 7 if the modem has never been used.
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 in for longer than
one second.
Step 6. ___ Set the modem power switch to off, then hold the
↑
key pressed and
set the power switch to on. When the message HW SELFTEST
RUNNING is shown, release the
↑
key.
After about 15 seconds the message is changed to DSP SELFTEST
RUNNING and then after another 15 seconds to:
┌────────────────────┐
│IBM 7857 AT CMD
aa
J
│
│td_ rd_ dsr
J
ec_ ll_│
└────────────────────┘
If this sequence does not occur, the modem is defective. Replace it.
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3745-XXA 1-30 3746-9X0: 6563 SPIM