IBM 3745 Problem Determination Manual page 310

Line Problem (HSS)
OTR or RTS is OFF and OSR or RFS is OFF:
Perform a
ta~lgate
wrap test (see Chapter 16).
o
Then return here to analyze the results.
o
o
o
o
Tailgate Wrap Test Results - - - - - - - - - - - - - - - - - - - - - - - - - - - - ,
• Test not successfu'l:
ra
• Test successful: Check the direct attachment cable connection. If it is correct, suspect the host
software.
OTR, RTS, OSR, RFS ar~ all ON:
Check that the cable is correctly plugged in and that the
'remote control unit is ready and operational. If they are both correct, perform a tailgate wrap test (see
Chapter 16). Then return here to analyze the results.
Tailgate Wrap Test Results - - - - - - ' - - - - - - - - - - - - - - - - - - - - - - - - - ,
• Test not successful:
ra
• Test successful, check:
DCE cable.
Remote control unit. Perform appropriate remote control unit tests.
The direct attachment cable connection.
The programmable line speed definition.
OTR or RTS is ON and DSR or RFS is OFF:
Check that the cable is correctly plugged in. 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:
ra
• Test successful: Check the DCE cable.
Chapter 10. line Problem (HSS)
10-7