Bell System BL106 User Manual download pdf (Page 41)

CS106/BL106 Combined Door Entry and Coded Access

Troubleshooting

Use the table below to determine the most probable cause of a fault condition.

Refer also to page 28 for problems with the coded access system (C106

Keypad).

Telephone Problems

Symptom

Possible Cause/Remedy

Low Speech Volume

 Volume adjustment required on

speech unit.

 Speech unit is not tight against the

panel grill.

 Panel grill is blocked

 More than one telephone is off the

hook.

 Speech unit supply voltage is low.

Check 10V - 15V across ‘C’ and ‘H’.

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Bell System BL106 User Manual Page 41