Guardian Telecom P3022, Руководство по установке и эксплуатации

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Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 9
Field Repairs & Adjustments
Field repairs may only be carried out by qualified technicians using OEM parts.
Substitution of parts voids warranty and may pose a hazard to users of the
equipment.
See: Replacement
Parts
•
Disconnect telephone wiring at the demarcation block and ring detect relay
power at the breaker to avoid shock and explosion hazard.
•
Loosen the four captive screws in the faceplate and detach the faceplate
from the base.
•
If the telephone is wall mounted temporarily hang the faceplate to the right
side of the base using two of the faceplate screws. Be careful not to lose
the "O" ring retainers.
See: Figure 6 -
Temporary Mounting for
Wiring
•
Perform the necessary repairs or adjustments.
•
Carefully replace the front plate and install all four screws.
Tip: Torque screws to
1.65 ft/lbs (1.36Nm)
•
Reconnect the Tip and Ring conductors at the demarcation block.
•
Apply power to Strobe Light/Loud Ringer conductors.
Handset Replacement
•
Disconnect the handset wiring from the terminal block.
See: Figure 4 - Wiring
•
If the phone is equipped with an armored cord handset, remove the
anchor screw from the armored cord lanyard.
•
Loosen the handset cable gland and pull out the cord.
•
Install the new replacement and tighten the gland.
•
Rewire the replacement cord to the terminal block.
Supplemental Receiver Replacement
•
Disconnect the supplemental receiver wiring from the terminal block.
See: Figure 4 - Wiring
•
Loosen the cable gland and pull out the cord.
•
Install the new replacement and tighten the gland.
•
Rewire the replacement cord to the terminal block.
Ringer Speaker Replacement
•
Unplug the speaker connector from the main board.
•
Remove the screws that hold the speaker cap to get access to the
speaker.
•
Install the new speaker and gasket.
•
Reconnect the speaker connector to the main board.
Main Circuit Board Replacement
•
Label any wiring attached to the circuit board. Disconnect wiring and
ribbon cable.
•
Remove the six screws holding the circuit board in place. Carefully
remove the board.
Tip: Torque screws to
2.5 in/lbs (0.28 Nm).
•
Install the new board and replace the six screws and wiring.