KX-TGJ310RU, KX-TGJ312RU, KX-TGJ320RU, KX-TGJ322RU, KX-TGJA30RU - Panasonic Telephone Service Manual (repair manual). Page 11

Read Panasonic KX-TGJ310RU / KX-TGJ312RU / KX-TGJ320RU / KX-TGJ322RU / KX-TGJA30RU Service Manual online

11
KX-TGJ310/KX-TGJ312/KX-TGJ320/KX-TGJ322/KX-TGJA30
4.3.4.
Power Supply Circuit/Reset Circuit
The power supply voltage from AC adaptor is converted to VBAT (3.0V) in IC302. And +3.0V for peripherals and analog part is
insulated from VBAT by Doubler of BBIC.
Circuit Operation:
5.5V
VBAT
RSTN(Reset) 
pin 71
VBAT
pin 10
pin 14
VDD5
IC501
IC302
IC601
BBIC
DOUBLER OUT
For peripherals
VDD1 (1.8V)
AC Adaptor
3.0V
REGULATOR
FLASH
IC502
FLASH
+3.0V
STM
RF Part
LED
7seg LED
1.8 V (VDD1)
VBAT (VDD3)
RSTN 
pin 71
BBIC chip initialize
STM
pin 14
VDD3
(for TGJ32x only)
Page of 96
Display

Click on the first or last page to see other KX-TGJ310RU / KX-TGJ312RU / KX-TGJ320RU / KX-TGJ322RU / KX-TGJA30RU service manuals if exist.