Panasonic KX-FT21RS - Manual (Page 99)

6.2.1.
General
Block
Diagram
ANALOG BOARD DIGITAL BOARD
POWER SUPPLY OPERATION PANEL
ASIC
LINE
EXT.
TEL
BELL
PAPER
HOOK
HANDSET SPEAKER
+24V
+5V
RLY
ANA
LOG
SW
LCD
SENSOR
KEY MATRIX
CPU OP PANEL
I/F
IMAGE
PROCESSING
MOTOR I/F
MOTOR SENSOR
ROM
1M
SRAM
256k
OSC
I/O
A/D
RESET
REG
RTC
CIS
THERMAL HEAD
+24V
+24V
AC220V
+5V
5V
+5V
MODEM
REG
MOS SW
3.3V
PRINTER
CONTROL
I/F
ROM
SELE
CTOR
VOL
SP
AMP
SP MUTE
HOOK SW
PAPER
PC
CODEC
ANA
LOG
SW
99
KX-
FT21R
S