Tally Dascom DL-210 Maintenance Manual page 57

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1.1.7 LED error
Symptom
Feed
Key
or
LED
indicators
do
not
work.
Possible Cause
Unsecured
cable
connection.
The
cable
connector is damaged.
Key or LED indicator is
damaged.
Key indicator circuit is
damaged.
Status indicator circuit
is damaged.
Inspection
Check
the
cable.
or
Check
the
cable.
Check key or indicator
circuit with oscillograph
or multitester.
Check the conducting
performance
circuit with multitester.
Check
key
circuit with oscillograph
or multitester.
51
Recovery
indicator
Re-connect
the cables.
Replace
indicator
cable
connector.
Replace
key
indicator.
Replace
of
the
key indicator
circuit.
indicator
Replace
main board.
the
or
the
or
the
the

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