Icom IC-M506 Service Manual page 37

SECTION 9
FRONT UNIT
HM-205B
MIC
SP1
PTT PTT PTT
KEYM KEYM KEYM
INT SP
SP1 R
1
DIAL UNIT
S1 DIALA
A
DIALB
B
COM
ENT
TP90N1007AE20
VOL UNIT
R1 L3V
VOLV
1VOL3P
SQL UNIT
R1 L3V
SQLV
1VOL3P
VCC
Q1:2SB1201
Q2:L2SC4081
D1:DZ2J091M
BKLT
CTRL
DS2-10:L-C191KYCT
LCD
DS1:888BK01012
LCD
MODULE
Key
Q3:DTA114EU Board
Q4:L2SC4081
D3:L1SS400
CI-V
I/F
IC5B:TC7W02FU
IC8:TC7S08FU
IC17:SN74AHCT1G32
COM1RXD
CLONERX
BUFF
CMDPWSW
CLONERXC
IC5A:TC7W02FU
CLONETXC
CLONETX
BUFF
COM1TXD
IC6:SN74AHCT1G04
Q5:L2SC4081
Q6:L2SA1576
COM1TXD COMTXD
BUFF
IC7B:TC7WH14FK
Q7:2SK880
COM1RXD COMRXD
BUFF
ICF3
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BLOCK DIAGRAM
HM-205RB
MIC
SP1
PTT
KEYM
IC701A:
LA4628
AF
AMP
ATIS
DECODER
(#06,#07)
IC13:NJM2211M
WX
IC3:TC7W53FK
DSC DSC SW
DECODER
IC12:NJM2211M
DTEST
PWM
A/D DSCOUT
BUFF
BUS
IC2B:
IC1:STM32F101ZGT6 LMV358IPW
CPU
A/D BEEP
BUFF
UART
GPS(OPT) IC2A:
LCD LMV358IPW
ICF3
NMEAinout X1:CR-834
HM-195(OPT) 7.9872MHz
AIS_dtat(OPT)
NMEA2000(OPT)
VoiceScram(OPT)
NoiSeCanselIC
PLLIC
OUT_ExpandIC
A/DIC IC11:
EVOLIC NJU7704F3
EEPROM
DSC_DECODE RESET
ATIS_DECODE
DIAL
UART IC14:
BR24T256FJ
EEPROM
UART
UART UART UART
IC4:NJM2830U1-33
L3V REG
3.3V
IC7A: IC9:PC357N6J
TC7WH14FK D5:4148U
NMEAI PHOTO
BUFF COUPLER
5V IC10:
ISL81487IBZ
NMEAO
BUFF
9-1
LOGIC UNIT
IC702A:
HV IC704: IC706:
M61545AFP
TC7S66FU LMV321IDCK
AF AF
MUTE AMP
VCC
DSCENC
BEEPO
HV
5V
NMEAI+
NMEAI-
NMEAO+
NMEAO-
EVOL
1A
(A