Service manual

August 30, 2002 99R85452E01-O
8-10
UHF Band Information
: Block Diagrams
8.4.2 Controller
Figure 8-3.
8.4.3 VCO
Figure 8-4.
Key
Pad
35
RC
NETWORK
9
RC
NETWORK
3
MIC
M101
27
31
4
15
16
22
25
13
EEPROM
Q114
CPU
Q101
PTT
S102
Mon
S101
LCD
LC101
Shift
Q102
Xtal
8.38MHz
X101
Divide
by 2
Q122
DTMF
Decode
Q120
Reset
Q105
DA
Converter
Q121
CPU
Pin87
DIODE
Q126
CPU
Pin21
CPU Pin22
CPU Pin36
DC
AMP
Q125
CN101
RX Local
Buffer
TX
Buffer
DATA
Audio Sub Audio
TX/RX
SW CONTL
Ripple
Filter
Q330
5V
VCO
Buffer
Q308
RX
VCO
Q311
Q324
TX/RX
SW
Q309
Q310
Audio
Modulator
Q329
Sub Audio
Modulator
Q322
TCXO
14.4MHz
X301
Q320,322
Loop
Filter
Q314
Q315
Q316
PLL
Q323
CN701
Pin37
38
39
Pin11
10
9
Pin15
16
Pin 1
Pin 8
2
TX
VCO
Q325
Q326
Power
Regulator
DC/DC
Converter
Q301