3
D601
SW
D301
DAN222
1
2
3
Q301
2SC5343E
1
3
2
TB31202
0
TC-618&626VHF
原理框图
1/2
21bitDIV
17bitDIV
32/33
CP
OSC
1/2
U202
/LIGHTING
RX
Q611
Q500
sp Amp
1
1
L453
1u
RX-VCO
SF
AMP(TX)
2ndIF BPF
T
o
n
e
V
O
X
1
2
3
D602
U201
AF
AMP
L102
D103
AGC
L101
16
Ω
IW
D300
1SS372
3
1
2
AT 24C64
Q102
MB95F108AK
WPFV-GE1
TUNE BPF
POWER-SAVE
tone-LPF
AFMOD
green
X601
DET
power management
U610
Reset
IC
B
G
R
EN
U605
APC/TUNE
Q103
Q501
RSSI
Mic amp
Q104
2SC5108
1
2
3
APC
DATA
VCO
U200
AN29160AA
PROCESSER
signalling input
XF1
0
LPF
D104
RQA0002
2
1
3
U609
IFAMP2
5th-LPF
AF
HPF
CLK
PE
VCC_BAR
D105
T/R-SW
APC/TUNE
5th-HPF
signalling output
PLLCLK
PLLDATA
PLLEN
Reset
mic
M IC
Pre
Emphasis
Q401
2SC4988
1
2
3
Vin
V
SS
Vout
Q101
2SK508NV
IFAmp1
SW
D102
To MCU
CF300
/4.5K
OUT
IN
IC
Q5
1
2
3
MON
BAT
D106
MATCH
Q402
VREF
38.85MHZ
ANTENNA
-
-
-
7.5V
TX
De
Emphasis
2SK3475
2
1
3
TUNE BPF
LATCH
BUFFER
U606
L604
601s
Q6
1
2
3
1stIF BPF
AF
mute
SAVE
FMMT717
Q400
2SC5108
1
2
3
SPVCC
RF MIXER
3 Amplifier
volume
To MCU
D108
D101
D107
7.3728M cry stal oscillator
LNA
FMMT717
CDC/CTC
Q403
R/TSW
5V
MCU
Q612
mix2
PTT
mic mute
POWERREG
UPA572T
RF PA
red
VCC
V-TX
Q100
2SK508NV
D100
VCC
LIM
(TX)
Q610
12.8MHZ
TXC
TX-VCO
AUDIO OUT
SQ
From MCU
LPF
Содержание TC-618
Страница 1: ......
Страница 84: ...TC 618 626 Service Manual 83 Troubleshooting Flow Chart Transmit Circuit ...
Страница 86: ...TC 618 626 Service Manual 85 MCU ...
Страница 91: ...TC 618 626 Service Manual 90 TC 626 ...
Страница 95: ...TC 618 626 Service Manual 94 Packing TC 618 as the example ...
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