Azur 752BD
Service Manual
15
Chapter
V Other control circuits of main baord
3.5.1 Block diagram of external input interface as shown in 3.5.1.1:
RS232
PORT
TRSF322
1E1PWR
MCU
Mt8530
UARXD_RP
UARXD3
UATXD3
Figure
3.5.1.1 Block diagram of external input interface
R S 2 3 2 : O n t h e p l a y e r , R S 2 3 2 i s m a i n l y u s e d f o r r e m o t e c o n t r o l c i r c u i t , a l l o w i n g
e x t e r n a l c o n t r o l s y s t e m t o c o n t r o l t h e p l a y e r v i a R S 2 3 2 p o r t .
C n 2 1 : M C U D e b u g p o r t
C n 6 : N A N D F L A S H D e b u g p o r t
C n 1 4 : S e r v o s o f t w a r e D e b u g p o r t , b a r c o d e i n p u t p o r t
U S B : 3 s e t s o f U S B i n t e r f a c e s f o r e x t e r n a l U S B d e v i c e s ( W I F I a d a p t e r i s c o n n e c t e d v i a
U S B )
U36
UATXD_RP
CN20
CN21
MCU_ISP_SCL
MCU_ISP_SDA
SDA
SCL
CN6
Rear
USB2
Front
USB
CN14
NANDFLASH debug
Server
software
debug
MCU Debug
Rear
USB1
USB power managment
& ESD circuit
USB power managment
& ESD circuit
USB power managment
& ESD circuit
-13-
Chapter V Other circuits of main board
