Kirisun PT8000 - Page 26

PT8000 Service Manual
24
Figure 1 PT8000 Block Diagram
1 1
2 2
3 3
4 4
5 5
6 6
D D
C C B B
A A
Title
Number RevisionSize
A3
Date: 2008-9-1 Sheet of File: X:\PT8000\..\PT8000 BLOCK DEAGRAM.SchDocDrawn By:
SPEAKER
SDA
CPU
R5F212A8
AT24C08 EEPROM
UL
CK DT UL
PLL IC
IC3
QT TCXO
5V
LOOP FILTER
RIPPLE FILTER
VCO
Q6
BUFF
Q1 Q2
RF AMP
RF AMP
8T 8R
Q4
Q5
DRIVE
PRE
8T
8T
ANT SW
LPF
APC CONTROL
IC4
BPF
BPF
Q19 MIX
XF1
49.95MHz
IF AMP
Q20
IF DEMODULATOR
IC6
Q21
NOISE
AMP
D25 DET
BUSY
CF1
450KHz
Q33
SW
AF POWER AMP
IC7
BATTARY
8TC
5V
IC11
IC15
5V
Q14
TX/RX SW
8R
8R
5V
TO ANT
AF OUT
CD1
DET COLL
13.8V
X3 7.3MHz
Q38
SW
MB15E03SL
MOD
IC1
RA30H
APC
8T
450KHZ
MUTE
TDA1519C
5V
16.8MHz
X1
TCXO
3.5V
TX
VCO
Q14
RX
8R
Q11
*3 2ND LOCAL AMP
CF2
450KHz
IC8A IC8BIC8CIC8D AMP LP LP AMP
CTCSS/DCS
MIC
5T
8RC
Q40
SW
8R 5V
TA7808S
IC16
IC17
NJM78L05UA
PF1 PF2 POWER
2TIN
RESET UL
RXD
INT TITEMP
D0
D1 D2 D3 DV
KEY1 RSSI
BUSY HOOK
VCCN 2TOUT SCL
SHIFT
TXD TGSW
TO1
BLC
APC
MAX RX
LE DT
CK
PA
8TC 8RC SBC W/N DATA CLK M-MU AFCO A-MU
Q7
BUFF
5V
KEY BOARD
IC9C IC9BIC9AIC9D AMP HP LP LP
HP
Q26
8R
IC10BIC10A
HP
AMP
2T
IC5
DTMF
DECODER
D0 D1 D2 D3 DV
J1 SPK
IC13D IC13AIC13BIC13C
LP LP IDC AMP
MOD
VR1 10K
PF3 PF4
IGN
E-ALA MODE DEV1 DEV2 SCANL LOWL RXL TXL
MD KEY2 PTT RPTT