Panasonic KX-PRW120W Service Manual

Panasonic KX-PRW120W Service Manual Manual pdf 40 page image

40KX-PRW120W/KX-PRWA10W9.1.9. Bell Reception9.1.9.1. Base Unit9.1.9.2. HandsetCross Reference:Telephone Line Interface (P.14)Check Link (P.33)How to Check the Handset Speaker or Receiver (P.61)9.1.10. Check TAM OperationCross Reference:Power Supply Circuit (P.13)Note:(*1) When replacing FLASH MEMORY (IC601), TAM data need to be written to it. Refer to Base Unit of Things to Do afterReplacing IC or X'tal (P.58)When bell signal is coming, is there bell soundsignal at BBIC (IC501:CIDINp, CIDINn)?Check around C103, C104, C105, C106, C107,C108, C109, C110, C111, C112, C123, C124,R101, R102, R103, R104, R105, R106, R107, R108,R109, R110, R111, R112, P101NODoes the bell sound from SPEAKER?Check around SP+, SP- .When bell signal coming, is there bell sound signalat BBIC (IC1: (U8, V8)(U9, V9))?NONOYESWhen bell signal coming, is there bell sound signalat SP+, SP- ?YESCheck BBIC (IC1), C36, C37.NOCheck cable of SPEAKER and resistance valueof SPEAKER.Check IC601 and BBIC (IC501) of Base Unit. (*1)Is there a TAM icon on the Handset display? Turn on the Answering System.Check Power Supply Circuit.NONOYESIs the voltage of VDD3 of Base Unit about 3.3 Vand VDD1 about 1.8 V?YES