WebbPhone 150 Manual 24 UG[WP-150] R9.6
TROUBLESHOOTING
Voltage Reference
On Hook Voltage: 24V – 55V DC
Off Hook Voltage: 3V – 10V DC
External Power 9V DC (Nominal)
Battery Voltage 8.4V – 9V DC
WebbPhone is dead. No dial tone when call button is
pressed.
Confirm that the green power LED is on (upper left of circuit board).
Press EXIT key (phone maybe in Programming mode).
Check all terminal connections, especially SPEAKER and CALL – wires
in snug and terminals screws tightened.
Check On Hook Voltage of Tel line. If less than 24V, disconnect tel line
from phone. If Tel line is less than 24V then it is a Tel line issue. Confirm
by testing with a handset – does the handset get dial-tone when off hook.
There is dial tone but the phone does not dial.
Confirm that a primary phone number has been programmed.
The unit briefly dials and then gets a busy signal.
Confirm that the primary phone number is correct and has the correct
prefix if reaching an external line through a switchboard.
Phones don’t hang up at end of call.
Some switchboard equipment do not provide a “wink” or CPC signal. A
workaround is to reduce the talk time value (function #7), or have the
monitoring station press the “#” key before hanging up.
You cannot call into and speak with a specific WebbPhone.
Confirm that the Cab ID has been programmed into the phone. If
connected through a LS-250 Rescue station, ensure function 13 is
programmed to 1.
Audio related issues.
Turning the SPKR control clockwise will reduce the speaker volume.
Turning the MIC control clockwise will reduce the microphone volume.
For a MWP-150, ensure it is mounted flush with the COP – no gaps
between COP and MWP-150.
For a MWP-150, ensure the speaker and Microphone holes align
between the MWP-150 and the COP.
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