KX-TEA308RU, KX-TE82460X, KX-TE82492X, KX-TE82493X, KX-A227X - Panasonic PBX Service Manual (repair manual). Page 16

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9.2. POWER BLOCK DIAGRAM
9.3. KX-TEA308RU MAIN BLOCK DIAGRAM
KX-TEA308RU 1AP BLOCK DIAGRAM
 
Ho
st i/f
 
Q1-4,TOE1,2,STD1,2
TONE
 
25Hz
 
CROSS 
POINT  
ROM 
SRAM 
DTMFR(1,2) 
(For EXT) 
PIO 
ASIC 
BELL 
TONE
(I/O)HOOK1-8,BELL1-8
 
620,440,350Hz
 
CO CID
 
CONNECTOR
 
D-Sub 
POWER UNIT
 
CONNECTOR
 
USB
 
CO1-3
EXT1-8
I/O,DTMFG
 
BGM 
PAGE
 
CO
(2AP)
 
Card 
 
CONNECTOR 
ASIC
 
8086
 
DSP
 
P I O
 
APT i/f 
BV Card
 
CONNECTOR 
TAM1-2,TONE 
 
(APT i/f)PRX,PTX,PTXE1-3 
(UART)RXD,TXD
 
 
 
EXT1  
EXT2  
EXT3  
EXT4  
EXT5  
EXT6  
EXT7  
EXT8  
Ringer 
Circuit 
Door Phone
 
Door Opener
 
CONNECTOR 
DOOR1,2
 
 
Int CID(FSK,DTMF) 
OGM,Modem 
 
CN708
CN707
CN701
CN706
CN710
CN704
CN703
IC601
IC602
IC603
IC705
IC704
IC700
IC7, IC8
IC606, IC607
16
KX-TEA308RU

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