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KX-TG6711RU/KX-TG6712RU/KX-TG6721RU/KX-TG6722RU/KX-TG6711CA/KX-TG6712CA/KX-TG6721CA/KX-TG6722CA/KX-TG6711UA/KX-TG6712UA/KX-TG6721UA/KX-TGA671RU
2.4.
Troubleshooting Guide
2.4.1.
Check Power
2.4.1.1.
Handset
[Changed from original section “9.1.1.2. Handset”]
2.4.2.
Check Battery Charge
2.4.2.1.
Handset
[Changed from original section “9.1.2.2. Handset”]
Check Power Supply Circuit/Reset Circuit .
Check BBIC (IC1).
Check F1 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: 8) oscillate at 10.368 MHz?
YES
YES
YES
YES
NO
NO
YES
YES
Is the voltage of +1.8V about 1.8 V?
Is the voltage of CP3V about 3.0 V?
Check BBIC (IC1).
YES
Is the voltage of CP_LED about 3.0 V?
(When LED is On)
(When LED is On)
YES
Is the voltage of CP2.8V about 2.8 V?
NO
NO
NO
Is BBIC (IC1: 34) high at charge state?
Check Charge Circuit.
Check Power of Handset.
Is Check Power OK?
NO
NO
YES
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