38KX-TG7731S/KX-TG7732S/KX-TG7733S/KX-TGA470S10.1.3. Check Playback10.1.3.1. Base UnitCross Reference:Power Supply Circuit/Reset Circuit (P.14)Note:Flash Memory is IC601.BBIC is IC1.(*1) Refer to Circuit Board (Base Unit_Main) (P.81).10.1.4. Check Battery Charge10.1.4.1. Base UnitCross Reference:Charge Circuit (P.15)10.1.4.2. HandsetCross Reference:Check Power (P.34)Charge Circuit (P.23)10.1.4.3. Charger UnitCross Reference:Charge Circuit (P.23)Check VDD1(1.8V) :Test point (VDD1)OKCheck Power Supply Circuit.Check output of BBIC (Pin 41,43).OKCheck BBIC and Flash Memory.Check Speaker and its surroundings.NONOCheck Charge Circuit of Base Unit.Check Handset.Plug in the AC Power source.Charge Handset on Base Unit.Is the voltage of two charge contacts about3 V or more? OKNOCheck Charge Contacts atBase Unit from mechanical point of view.YESIs BBIC (IC1: 34) high at charge state? Check Charge Circuit.Check Power of Handset.Is Check Power OK?NONOYESCheck Charge Circuit of Charger Unit.Check Handset.Plug in the AC Power source.Charge Handset on Charger Unit.Is the voltage of two charge contacts about3 V or more? OKNOCheck Charge Contacts at Charger Unitfrom mechanical point of view.YES
