KX-TU301RUME - Panasonic Telephone Service Manual (repair manual). Page 30

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30
KX-TU301RUME
10.4. How to Check the Handset Speaker or Receiver
1. Prepare the digital voltmeter, and set the selector knob to ohm meter.
2. Put the probes at the speaker terminals as shown below.
Handset speaker (receiver)
Digital Voltmeter
Is the value between
(+) terminal and (–) terminal about 32 
Ω?
RECEIVER:
Is the value between
(+) terminal and (–) terminal about 8 
Ω?
NG
NO
OK
YES
Replace the speaker 
(receiver).
SPEAKER:
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