Icom IC-M45 - System Block Diagram; Overall System Block Diagram

SECTION 9 BLOCK DIAGRAM
9 - 1
SP
FM
DET
IC1: TA31136FN (D)
2nd
MIX
Q3: 2SC2714 Y
2nd IF
AMP
Q2: 3SK131 L
ANT SW
Q1: 2SK882 Y
RF POWER AMP
Q11: 2SC2954
Q10: 2SC3775 3
D9: MA862
TX/RX
SW
SQL
SW
2nd LO
SQL
X2: CDBCA450CX24
NOISE
AMP
NOISE
DET
SQL VR
(VR-B unit)
AF
FILTER
AF
MUTE
EEPROM
AF
POWER
AMP
LOGIC UNIT
LCD
DS1: LD-HU4549J-1
DIM
CPU
IC1: M38223M4-432HP
X1: PBRC 4.91 BR
RESET
BEEP
RMUT
AF VR
(VR-A unit)
TONE
TONE
DE-
CODER
TMUT
Q14: RN1404 Q15: RN1404
COMMON LINE
TX
MUTE
CTRL
X1: CR-528 15.2MHz
PLL
IC3:UPD3140GS
Q8: 2SC4215 O
UNLK
DSC
UNIT
(OPTION)
PATTERN SWITCH
13.8V
EXPAND
REVERSE
CONECT
PROTECT
POWER SW
(VR-A unit)
HVS
REG
R5
CTRL
RCV
T5
CTRL
SEND
LOOP
FIL
VCO
Q7: 2SC4215 O
Q9: 2SC4215 O
LPF
T5
MIC
AMP
IDC
AMP
R5
5V
HV
LAMP DS2: HRS-7219A-Y2 30 DS3: HRS-7219A-Y2 30
MIC
CERAMIC
BPF
BUFF
BUFF
IF
AMP
XTAL
BPF
FIL
BPF
RF
AMP
PRE
DRIVE
YGR AMP
BPF
LPF
RF OUT
DET
APC
HI/LOW
CTRL
HI/LO
ANT
BUFF
RX LINE TX LINE LINE DATA BUS LINE
Q4: FMW1 Q5: 2SB1132 Q
IC2: S-80742SL-A6
IC4: X25080S1-2.7
IC7: BU4094BCF
D17: DSA3A1
IC8: TA7805F
Q20: 2SB1132 R
Q18: 2SB1132 R
IC4: TA75S558F(TE85L)
IC6A: M5218AFP 600C
IC6B: M5218AFP 600C
Q4: 2SK210 GR Q5: 2SK210 GR
FI2: CFWS450E
D1: XB15A308 D13: XB15A308
IC2: SC-1302
D11: HSM88ASR D12: HSM88ASR
Q12: 2SB1143 S Q16: RN1402
IC10: BA1604F [M45] only
IC5: BU4066BCF
IC9: LA4425A
Q21: 2SC2712 Y Q22: 2SC2712 Y
MAIN UNIT