STARPLUS Starplus DHS-L, Technical Manual, Page: 261 / 294

System Diagno sti cs 6-7
Chapter 6 - Maintenance /Troubleshooting
Table 6-5: Key Telephone (cannot hear)
Symptom Diagnostic Aid Cause Corrective Action
Cannot hear
(handset) Key Telephone Component Failure
1. Verify MUTE is not lit.
2. Lift handset, ICM tone should be heard
over the handset.
3. Press [SPKR] key, observe red LED and
place handset on hook.
† If ICM tone is heard over the
loudspeaker, but was not heard
through the handset in Step 1,
exchange handset assembly with
another known working unit.
† If ICM tone is still not heard after
repeating the test in Step 1, replace
the coiled handset cord. If the cord is
defective, the original handset is
probably okay.
† If ICM dial tone still cannot be heard,
replace key telephone.
Table 6-6: Speakerphone (cannot be heard)
Symptom Diagnostic Aid Cause Corrective Action
Other party cannot
hear you on your
speaker phone Key telephone
(other station) Connections,
component failures
1. Verify MUTE is not lit.
2. Press [SPKR] and listen for tone over
the speaker.
3. Call a known good working station.
( The distant party should be using the
handset).
4. If the other party cannot hear you, lift
handset and verify proper handset
operation.
Table 6-7: No Sound From Speaker
Symptom Diagnostic Aid Cause Corrective Action
No sound over
speaker Key telephone Connections,
component failure
1. Press [SPKR] button (red LED).
2. If you can hear ICM tone over the
handset, but not the speaker, replace
the key telephone.