Icom IC-80AD Service Manual page 43

SECTION 9. BLOCK DIAGRAM
• BLOCK (1/2)
CLONE
EXITMIC
MC300
EM6022P
Q303
XP1215
Q301 GAIN
UNR9213 SW
TX
SW
MIC1
MIC2
VCC
Q300:2SA1832
PTT
DET
FLASHTXD
FLASHRXD
AMBEGND
MD2
FLASH
D 13:MA2S077
CLK CLSFT
SHIFT
12.288MHz
X1:CR-864
D200:MA2S111 BLED
Q200:UNR9213 T-R
Q201:UNR9213 LIGHT TXLED
DS201:CL-165
[DATA]
IC52:MAX3221
RX232
RS-
232C TX232
J50
Q50:2SC4738
Q53:2SA1832
D50:MA2S728
D51:MA2S111
IC3:SN74LVC2GU04DCKR
CLIN
CLONE
CLOUT
Q 203:2SA1832
DS210:VFY1111C
DS211:VFY1111C
DS212:VFY1111C
IC603
LCD LLIGHT LC75827
LIGHT
LCD
Q202:UNR911H DRIVER
DS202-209
VFY1111C
KEY KLIGHT
LIGHT
LCD
Q305:UNR9213
DTMF
LPF
DVC
IC302B:LMV324
Q304:2SC4738 IC301:TC7W53F Q306:XP1213 IC302C:LMV324
MIC MODE
IDC
AM P SW
Q302
U NR9113 D/AS D/AS
MUTE DVC
MIC
CTRL IC300:AN6123 Q309:UNR9213
ALC LPF
MICC AM P
IC507:XC6202P502 IC508:XC6204B332 DTCS
CTCSS
5V C5V 3.2V 3.2V X501:CR-876
REG REG
16.384MHz
AMBEC Q506:2SA1832
Q507:XP1501
+5V 3.3V +3V
REG
DVC Q503:UNR9213
Q504:2SA1832
+5V 5V
SW
X500:CR-877
DVC
9.8304 MHz
SQL
CPUHV
UNLK
TTEM P
TX-V
VIN
BATT
TEMP TEMP
CPU DET
BTDET
IC1:HD64F2364
CHGH,CHGC
RESET
PCON
POWER
IC51:24LC512
MATRIX KEYBOARD EEPROM
9 - 1
AFO
INTSP
CLONE
SPE
Q403:RSR025N03
Q404:RSR025N03
SP AFO AF
Int.SPEAKER MUTE
AFMUT E
VCC
VCCSW
IC504A:NJM2115
IC503:AD73311
LPF BUFF
LINEAR DAFOUT
CODEC
AMBERES
SEN
SO
SCLK
I C505
SI
Q505:2SC4738 SN74LVC1G04
AM P BUFF
DSP
CODEC
AMBERXD I C506:AMBE-2020
AMBETXD D500:MA2S728
AMBESTB IC504B:NJM2115
AMBECLK
AMBEEPR
BUFF
AMBERES TXDT
TXCK
RXDT I C501
RXCK CMX589
IC302D:LMV324
I C500
MODEM
Q500:2SC4738 SN74LVC2G74
BUFF
AM P 1/2
Q502:UNR9213
Q501:UNR9213 IC502:TC7S66
ACQ DSEL
CTRL CTRL
ACQ DSEL
Q51:2SD2216
D53:MA8082
D54:MA2S111
HV
DET
Q52:2SD2216 Q150:2SA1588 Q153:XP1501
Q151:2SB1201 D150:MA133
BAT Q152:UNR9213 D 151:SB07-03C
DET
CHG
+5V
I C100:S-812C33
D100:MA2SD100
IC101:S-80929 CPU3
REG
RESET
IC103:XC6204B332
+3
+3V
REG
IC125:XC6371A
D125:RB551V
+5.5V DC-DC
VCCSW
LOGIC UNIT
J701
[MIC]
AFO
INTSP
[SP]
CLONE
SPE
J700
IC400:TA7368F
AF VOLOUT
AMP
Q700:CPH3313
Q400:2SB120
Q701:UNR9213
Q401:XP1501
D700:MA2S728
Q402:2SA1588 1
+5
CTRL
AF AMP
AFON
REG
+5SW
CTONE
RTONE
DAFOUT
IC501A:NJM2904
Q500:UNR9211
RTONE RTONE
IC303:TC7W53
MODE MOD MOD
SW
D ICK
UP
[DIAL]
E
DIUD
DN
(CHASSIS)
S702
TP70N00E2015F
SQL
+3V
[PTT]
[SQL]
INTPTT S700
S701
SKHLLFA010
SKHLLFA010
IC102:XC9201D09
Q101:RSQ035P03
D102:RB161
VCC
SW
REG
IC701:CD4094
IC702:CD4094
I/O
DATA
CK
IC104:LMV331
IOSTB1
Q102:UNR9113
IOEN
Q103:UNR9213
D103:MA2S728
VCC
SW
MAIN UNIT
+5V
IC150B:LM2904
Q150:UNR9115
TONE
FIL
CT
LPF
IC500B:CD4066
DV
MODE
SW
DVAF
RSSI
AF
a
FIL
AFS
Q552:2SC4738
AF
b
FIL
c
RSSI
d
NOISE
e
DATA IC600:BU2502
CK
MOD
DASTB1
VMOD
f
RMOD
g
BEEP
D/A
VOLOUT
REFC
h
UNLK
i
TTEMP
j
TX-V
k
VIN
l
BATT
m
HV
n
CHG o
VCC
p
BCVCOC FMAF
VVCOC AM
UVCOC WFM
VSHIFT W/N
SQLSW R3C
CT AFS
DVAF +5SW
ATT