Panasonic KX-TG5521RUB Service Manual page 26

KX-TG5521RUB/KX-TGA551RUB
9.1.2. Check Battery Charge
9.1.2.1. Base Unit
Plug in the AC Power source.
Charge Handset on Base Unit.
Is the voltage of two charge contacts about
3 V or more?
Check Charge Contacts at
Base Unit from mechanical point of view.
Cross Reference:
Charge Circuit (P.12)
9.1.2.2. Handset
Is Check Power OK?
Is BBIC (IC1: 52) high at charge state?
Cross Reference:
Check Power (P.25)
Charge Circuit (P.12)
9.1.2.3. Charger Unit
Plug in the AC Power source.
Charge Handset on Charger Unit.
Is the voltage of two charge contacts about
3 V or more?
Check Charge Contacts at Charger Unit
from mechanical point of view.
Cross Reference:
Charge Circuit (P.12)
YES
YES
YES
NO
Check Charge Circuit of Base Unit.
Check Handset.
NO
Check Power of Handset.
NO
Check Charge Circuit.
NO
Check Charge Circuit of Charger Unit.
Check Handset.
26
OK
OK