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Relocate Customer Setup Light Sequence
Steady States
After relocation CSU (customer setup unit) is selected at the control terminal, the
light sequences at the next time the power is turned on are:
Base
Cartridge
Seconds
On
On
0.25
Off
On
0.5
On
Off
5.0
Off
Off
5.0
On
Off
0.5
Off
On
0.5
During this sequence, which occurs only the first time the 3708 is turned on after
relocation CSU has been selected, the IBM-supplied configuration is invoked. The
error and alert logs in EEPROM are cleared, and a subset of the extended
diagnostics is run. The customer configuration in EEPROM is not changed, and
port wrap testing is not required.
To invoke the user-defined configuration, turn the 3708 off and back on again.
When the red lights blink alternately, the 3708 initialization is complete. Normal
operations may begin or resume.
A steady state on the 3708 red LEDs lasts for more than one minute after one of the
sequences previously described has completed or while one of the sequences is being
executed.
Base and Cartridge Lights Blinking Alternately
This is a normal condition when an SNA host has not activated the 3708. The 3708
has not received a valid SDLC SNRM command from the host to initialize
communications. If LEDs continue to blink alternately, the 3708 SNA host ports
have been configured incorrectly or do not match the definition of the SDLC links
at the host. For example, the SDLC station addresses may be different.
If the 3708 has been configured with no SNA host, this is the normal state of the red
LEDs.
Base and Cartridge Lights Both Off
This is a normal condition when a SNA host has activated the 3708. The 3708 has
received a valid SDLC SNRM command from a host to initialize communication on
at least one of the 3708 ports configured as SNA host connections.
If the 3708 has been configured with at least one SNA host port, this is the normal
state of the red LEDs.
Base and Cartridge Lights Blinking Together
The 3708 is performing port diagnostics and is waiting for the port wrap plug to be
inserted in each port. If the 3708 was performing setup procedures, the port wrap
tests are required. Refer to IBM 3708 Network Conversion Unit Setup. If the 3708
was performing extended diagnostics, the port wrap tests can be stopped by pressing
the test/normal switch to the test position (see "Extended Diagnostic Sequence" on
page 2-2).
Chapter 2. 3708 Operation
2-3
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