Merlin 3070 Service And Maintenance Manual page 11

DIAGNOSTICS MODULE (OPTIONAL)
The Diagnostics Module, an optional module color-coded orange, occupies position 4. (When
the Diagnostics Module is not used, a plastic cover protects position 4.) The Diagnostics
Module permits testing of memory and individual Line, Voice Terminal, and Basic Telephone
Modules.
EIA RS-232c jack: Permits connection of a
data terminal for more detailed testing.
This jack is covered with a plastic tab if a
data terminal is not used.
4-character alphanumeric display:
Provides diagnostic messages during
testing.
Normal/Test switch: Permits normal call
processing when set to Normal; permits
diagnostic testing when set to Test.
Next pushbutton: Pressed to resume
testing when diagnostics are interrupted by
a problem.
Detail pushbutton: Pressed to request
further information when * appears in the
character display area, signaling detection
of a problem.
See CIB 3018: Diagnostics Module under
the Diagnostics tab divider for further
information about the Diagnostics Module.
MODULE A
Position 5, color-coded gold, is reserved for future use. At present a plastic cover
protects this position.
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