![background image](http://html1.mh-extra.com/html/ibm/xseries-300/xseries-300_service-manual_3532656077.webp)
021
Switch the modem power off, then power on.
Is the ONH LED always off?
Yes
No
022
Restart problem determination. Go to Step 005 on page 4-8.
023
The modem is defective. Exchange it (see “Modem Exchange Procedure” on
page 4-14).
024
In the following table, select the action according to your modem status.
Modem Status
Action
The message displayed on the modem
screen is not correct
Refer to the problem determination chapter
in the
7857 Modem Guide to Operation,
GA13-1839.
OH LED is on
Go to Step 025.
DTR(108) or RFS(106) is off
Go to Step 029.
025
Switch the modem power off, then power on.
Is the OH LED always on?
Yes
No
026
Restart problem determination. Go to Step 005 on page 4-8.
027
The modem is defective. Exchange it (see “Modem Exchange Procedure” on
page 4-14).
028
In the following table, select the action according to your modem status.
Modem Status
Action
MR LED off
The modem is defective. Exchange it (see
“Modem Exchange Procedure” on
page 4-14).
HS off
Suspect a modem configuration.
TR off
Go to Step 029.
029
– Check that the cable between the Nways Switch administration station and the
modem is correctly connected.
MAP 0410 (continued)
Chapter 4. Nways Switch Administration Station Problem Determination
4-11
Summary of Contents for xSeries 300
Page 2: ......
Page 9: ...Tables 1 1 Telecommunication Cables 1 31 Copyright IBM Corp 1998 2000 vii ...
Page 10: ...viii 2220 Setup and Service Guide ...
Page 14: ...xii 2220 Setup and Service Guide ...
Page 66: ...Figure 3 4 Example of PM Ping Results 3 8 2220 Setup and Service Guide ...
Page 82: ...4 16 2220 Setup and Service Guide ...
Page 142: ...B 10 2220 Setup and Service Guide ...
Page 144: ...C 2 2220 Setup and Service Guide ...
Page 146: ...D 2 2220 Setup and Service Guide ...
Page 156: ...E 10 2220 Setup and Service Guide ...
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