Panasonic KX-PRW110RUW / KX-PRW120RUW / KX-PRWA10RUW Service Manual ▷ View online
25
KX-PRW110RUW/KX-PRW120RUW/KX-PRWA10RUW
9 Troubleshooting Guide
9.1.
Troubleshooting Flowchart
Flow Chart
*1 KX-PRW120 only
Cross Reference:
Check Power (P.26)
Check Wi-Fi (P.27)
Bell Reception (P.36)
Check Battery Charge (P.28)
Check Link (P.29)
Check the RF part (P.32)
Check Handset Transmission (P.35)
Check Handset Reception (P.35)
Signal Route (P.16)
Check Caller ID (P.35)
Check TAM Operation (for KX-PRW120 only) (P.36)
Check Wi-Fi (P.27)
Bell Reception (P.36)
Check Battery Charge (P.28)
Check Link (P.29)
Check the RF part (P.32)
Check Handset Transmission (P.35)
Check Handset Reception (P.35)
Signal Route (P.16)
Check Caller ID (P.35)
Check TAM Operation (for KX-PRW120 only) (P.36)
Power ON Base Unit
Bell
Link
Battery Charge
Handset Voice Transmission
Handset Voice Reception
DTMF dial
OK
OK
No Link
OK
OK
OK
OK
OK
Not working
No bell
No voice
No charge
No voice
No signal
Check Handset Transmission
Check Handset Reception
Signal Route
Check Battery Charge
Bell Reception
Check Power
Check Link
Range
NG
Check the RF part
Caller ID Reception
OK
No signal
Check Caller ID
TAM Operation
*1
OK
Not working
Check TAM Operation
*1
Smartphone Connect
Not working
Check Wi-Fi
OK
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KX-PRW110RUW/KX-PRW120RUW/KX-PRWA10RUW
9.1.1.
Check Power
9.1.1.1.
Base Unit
Is the AC Adaptor inserted into AC outlet? (*1)
Cross Reference:
Power Supply Circuit (P.11)
Note:
(*1) Refer to Specifications (P.7) for part number and supply voltage of AC Adaptor.
Is input of IC302 about 5.5 V?
Check C321, C341 are not shorted.
Check AC Adaptor.
Check Power Supply Circuit.
Is the output voltage of IC302 about 3.3V?
Does BBIC (IC501: XTAL1) oscillate at 20.736 MHz?
Check X1.
Check BBIC (IC501).
Is the Collector of Q301 about 1.8 V?
Is BBIC (IC501: RSTn) High?
Check BBIC (IC501).
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
Is the Collector of Q302 about 2.5 V?
YES
NO
NO
NO
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KX-PRW110RUW/KX-PRW120RUW/KX-PRWA10RUW
9.1.1.2.
Handset
Cross Reference:
Power Supply Circuit/Reset Circuit (P.14)
9.1.2.
Check Wi-Fi
Is the AC Adaptor inserted into AC outlet?(*1)
Note:
(*1) Refer to Specifications (P.7) for part number and supply voltage of AC Adaptor.
Check Power Supply Circuit/Reset Circuit .
Check BBIC (IC1).
Check P1 is not open.
Check X1.
Is the voltage of BATT+ 2.3 V more?
Check the battery and around BATT+ and
BATT- are not shorted.
BATT- are not shorted.
Is the battery inserted BATT+ and BATT-?
Does BBIC (IC1: G1) oscillate at 20.736 MHz?
YES
YES
YES
YES
NO
NO
YES
YES
Is the voltage of +1.8V about 1.8 V?
Is the voltage of +3.0 V about 3.0 V?
Check BBIC (IC1).
YES
Is the voltage of LED+ about 9.0 V?
(When LED is On)
(When LED is On)
NO
NO
NO
Check around L3, Q8, BBIC (IC1) .
YES
NO
Is the voltage of +3.4V about 3.4 V?
Check Power Supply Circuit.
Is the voltage testpoint 1.5V about 1.5V?
Below 1.5V
Replace IC800
Over 1.5V
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KX-PRW110RUW/KX-PRW120RUW/KX-PRWA10RUW
9.1.3.
Check Battery Charge
9.1.3.1.
Base Unit
Cross Reference:
Charge Circuit (P.14)
9.1.3.2.
Handset
Cross Reference:
Check Power (P.26)
Charge Circuit (P.14)
Charge Circuit (P.14)
Check Charge Circuit of Base Unit.
Check Handset.
Plug in the AC Power source.
Charge Handset on Base Unit.
Charge Handset on Base Unit.
Is the voltage of two charge contacts about
3 V or more?
3 V or more?
OK
NO
Check Charge Contacts at
Base Unit from mechanical point of view.
Base Unit from mechanical point of view.
YES
Is BBIC (IC1: R2) high at charge state?
Check Charge Circuit.
Check Power of Handset.
Is Check Power OK?
NO
NO
YES
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