IBM 3745 Problem Determination Manual page 314
Communication controller
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Also See for 3745:
- Hardware maintenance reference (712 pages) ,
- Maintenance information reference (595 pages) ,
- Service functions (321 pages)
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o
o
o
o
o
Line Problem (HSS)
C
is
OFF:
Perform a tailgate wrap test (see Chapter 16). Then return here to analyze the results.
Tailgate Wrap Test Results - - - - - - - - . - - - - - - - - - - - - - - - - - - - - - - ,
• Test not successful:
CO
• Test successful: Check the direct attachment cable connection. If it is correct, suspect the host
software.
C is
ON
and I is
OFF:
Check that the remote control unit is ready and operational. If it is,
perform a tailgate wrap test (see Chapter 16). Then return here to analyze the results.
Tailgate Wrap Test Results - - - - - - - - - - - - - - - - - - - - - - - - - - - - ,
• Test not successful:
CO
• Test successful, check:
-
The direct attachment cable.
C and I are both
ON:
Check that the remote control unit is ready and operational. If it is, perform
a tailgate wrap test (see Chapter 16). Then return here to analyze the results.
Tailgate Wrap Test Results - - - - - - - - - - - - . . . : - - - - - - - - - - - - - - - - . . . . . ,
• Test not successful:
CO
• Test successful, check:
Remote control unit. Perform appropriate remote control unit tests.
The direct attachment cable connection.
Network.
Chapter 10. Line Problem (HSS)
10-11
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