NAD C427 - C427 Block Diagram

Signal
Power
control
KUANGXIN FM/AM/RDS MODULE
kst-mb114ma1-23
D
1
G
2
V
3
GP1UV701QS
Key and IR front panel
FM ANTENNA
AM ANTENNA
ENCODER
FM/AM LO FM/AM RO
SPI
RDS DATA
LO
RO
TRIG IN
IR IN
RS232
LOGIC
Buffer
IR TRIG RS232
MAIN PSU
Standby PSU(TNY274PN)
5V 1A
MAIN L MAIN N
NAD C427 BLOCK DIAGRAM
VERSION: V1.0
Drafted by: Ben
Data: 2013-06-25
standby (<0.2W dissipation )
PSU BOARD
LDO
AMS1117
3V3S
-VF
3V3D
+/-12V 0.5A
SWITCH
+8V
TRANSFORMER
+VF
+8V 0.5A
TRANSISTOR
LDO
AMS1117
GPIO
+8V
5VS
5VD
APM2301
Conversing
VFD
BOE CIG128X32
Main MCU
M30281FAHP
SPI
I2C
GPIO
3V3S
VDF Driver MCU
PIC18F26K20
3V3D
74LCX244
-VF
+VF
AC INLET
-12V
+12V
7