Panasonic KX-TCD540NZM Service Manual page 108

Power RAMP Power RAMP is matching Adjustment (Cordless Handset)
(Q)
** : Refer to Adjustment (Cordless Handset) (
)
17. HOW TO CHECK THE CORDLESS HANDSET AND
BASE UNIT SPEAKER
1. Prepare the digital voltmeter, and set the selector knob to ohm meter.
2. Put the probes at the speaker terminals as shown below.
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