Merlin 3070 Service And Maintenance Manual page 42

Off-premises telephone is
3.
defective.
Off-Premises Telephone
4.
Interface is defective.
Control unit is defective.
5.
TROUBLE ON ONE TELEPHONE
3. Unplug the suspect off-premises telephone.
Plug in a telephone known to be working
properly. If the trouble does not appear,
replace the suspect telephone.
4. If the trouble still exists, replace the Off-
Premises Telephone Interface.
5. If a new module does not solve the problem,
the control unit probably needs repair.
Dialing
A2-9