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6-4. SCHEMATIC DIAGRAM – PANEL/POWER SUPPLY Section –
R102
470k
R187
1k
R189
1k
SENSOR
R103
470k
UNIT
R188
1k
D109
RB520
C152
0.01
D102
1SS355
VOLTAGE DETECT
IC103
S-80821CNNB
R112
R107
1k
1k
C108
100p
CE
DATA
CLK
DOUT
MUTE
BEEP
VDD
(Page 11)
C114
C115
100p
100p
GND
C151
2.2
35V
Q106,107
POWER ON/OFF
CONTROL SWITCH
• See page 14 for Waveforms. • See page 15 for IC Pin Function Description.
Q103
2SA1576
LED DRIVE
D105,106
(LCD BACK LIGHT)
R124
100k
R127
R129
C154
R190
100
100
0.1
10k
R105
R108
1M
1M
JC102
0
VOLTAGE DETECT
R101
2.2M
P65
P64
P63
P62
P61
C105
R115
R114
P60
0.1
470k
10k
AVSS
C111
0.01
VDET2
C112
0.1
VDET1
BEEP
PS
MOUNT
R117
1k
MUTE
C122
P24
0.01
R118
1k
DATA/EEPROM
R119
1k
R116
CLK/EEPRON
10k
R120
1k
DATA/PLL
R121
1k
CLK/PLL
R122
1k
CE/PLL
P10
C107
R106
0.01
10k
EEPROM
IC102
BR24L01F-WE2
C127
0.047F
5.5V
R126
220
T101
DC/DC
CONVERTER
D103
R104
1SS355
1k
R109
D104
C117
100k
UDZSTE-1713B
0.1
R110
100k
Q101,102
DC/DC
C119
C109
Q101
Q102
R111
C118
10
10p
2SC4081
CONVERTER
2SC4081
47k
1
6.3V
• TOTAL CURRENT
FM: 18mA
AM: 11mA
Q107
(NO-SIGNAL CONDITION)
2SB970
R145
100k
R144
1k
DRY BATTERY
SIZE"AA"
(IEC DESIGNATION R6)
Q106
R146
2PCS. 3V
DTC144TUA
470k
LCD101
LIQUID CRYSTAL DISPLAY
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1
SYSTEM CONTROLLER
S0
IC101
COM3
µPD789488GC-A35
-8BT
COM2
COM1
COM0
C140
VLC0
C141
VLC1
C142
VLC2
CAPL
C143
1
CAPH
TP117
(KR3)
R138
220k
R141
10k
R123
1k
X101
C130
4.19MHz
C139
22p
9p
C129
C138
10p
22p
L104
L101
C131
C136
100µH
22µH
10p
22p
R139
1M
C101
D101
1
RB521S
Q105
Q104
2SA1576
2SA1576
SHIFT
SHIFT
R178
R179
CLOCK
CLOCK
100k
100k
C133
C135
0.01
0.01
R128
R140
R143
R134
1M
10k
10k
1M
S101
S102
S103
-
+
RESET
R180
R183
2.2k
2.2k
C158
1000p
C155
1000p
S104
S105
S106
TUNE MODE
ENTER/SELECT
MODE/FREEZE
R181
R184
2.2k
2.2k
C156
1000p
S107
S108
S109
BAND/SET
LIGHT
RADIO POWER
R182
R185
R186
2.2k
2.2k
2.2k
C157
1000p
13
13
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1
S0
COM3
COM2
COM1
COM0
1
1
1
RESET SIGNAL
GENERATOR
C146
0.01
TP115
(KS1)
TP116
(KS0)
ICF-M88B
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