Circa Enterprises Guardian Telecom PPA, Руководство по установке и эксплуатации

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Guardian Telecom Installation and Operation
Models PTR, PTA, PPR & PPA
Page 16
Troubleshooting
Note:
If access to the interior of the station is required refer to the appropriate
section.
See: Accessing the
interior of the Station
Station Is Dead but Associated Speaker Is Working
• No Repair Possible, Return Module for Repair.
See: Warranty and
Product Return
Station Is Dead and Associated Speaker Is Not Working
• Ensure power is being supplied to the station.
• Check the fuse located on the circuit board and replace if necessary.
Correct the problem that caused the fuse to fail.
See: Specifications for
correct fuse rating
Handset Microphone Volume Too Low
• Adjust TX level control on circuit board.
Handset Receiver Volume Too Low
• Adjust RX level control on circuit board.
Feedback or Distortion
• Adjust sidetone level control on circuit board.
• Inspect the line and connections for shorts and grounds.
• Ensure that the line balance assembly is loading the lines properly. 33
Ohms for Talk lines and 33 to 133 Ohms for Page lines
Sidetone
• Adjust sidetone level control on circuit board.
Station Stays On or Off Hook (LED Status Indicator On)
1. Ensure power is being supplied to the station.
2. Test the proximity switch in the handset receiver cradle by moving a
small, permanent magnet over the area while listening on the handset for
the line to open and close.
3. If the movement of the magnet switches the on/off hook condition, the
magnet in the receiver cartridge of the handset may be weak – try another
handset. It is not necessary to wire in the new handset to perform this test
– if the new handset switches the on/off hook condition, replace the
existing handset with the new unit.
4. If the movement of the magnet does not appear to switch the on/off
hook condition the handset itself may be defective – try another handset.
5. If these remedies do not correct the problem return the module for
repair.
See: Warranty and
Product Return
Excessive Noise on Line
• Verify no other station's handset is off the hook.
Crosstalk
• Inspect wire terminations for crossed wire pairs.