Block Diagram - Icom IC-M302 Service Manual

SECTION 10

BLOCK DIAGRAM

FRONT UNIT
HM–141
SP1:
045P0803
INT SP
VR BOARD
R1:
TP96N97N–15SK–10KA–2685
SQL BOARD
R1:
TP96N97N–15SK–10KB–2685
LOGIC BOARD
KEY
BOARD
DS1:
IS08251E00V0 X1
CR–769
7.9872 MHz
LCD
Q2: 2SB1132 R
Q3,Q4: 2SC4116 IC5:
BD5242FVE–TR
DIM
IC1: M37560MFA–303GP
CONT
RESET
CPU
D2: 1SS355
Q6: DTC114TU IC4:
BR24L32FV–W
CLONE CI–V
I/F
EEPROM
IC3:
IC2: PC357N6T
TC7S14FU
NMEA+
PHOTO
BUFF
NMEA– COUPLER
External GPS
IC6 A: NJM2904 M
BUFF
IC6 B: NJM2904 M
BUFF
BPF
DSCENC
MAIN UNIT
EXT SP
IC2A:
NJM13403V
WXDEC
LPF
IC3:
IC6:
NJM2211M
LA4425A
AF DSCDEC DSC
AMP
DECODER
IC7B: Q5:
TC4W66F 2SC4116 BL
AF
BPF
MUTE
RMUTE
DSCENC
IC7A: IC2B: IC2C:
TC4W66 F NJM13403V NJM13403V
MIC MIC
IDC
MUTE AMP
D25:
DSA3A1
REVERSE
HV
CONNECT
PROTECT
SEND
IC9: TA7805 S
HVS +5 5V T5 T5
REG
CTRL
Q31: 2SA1577 Q
Q32: DTC144EU
Q33: 2SC1577 Q
Q34: DTC144EU
R5
R5
CTRL
RCV
HVS R8 R8
REG
Q35: 2SB1132 R
Q36: 2SC4116 BL
10 - 1
FI3: ALFY450E
CERAMIC
BPF
IC1: TA31136FN
FI1,FI2:
Q4:
FL–363
2SC4215 O
IF
FM 2ND IF 2ND XTAL
DET AMP MIX AMP
21.7MHz
NOISE NOISE 2ND LO
AMP
DET BUFF
X2
CR–768
21.25 MHz
2nd LO
Q26:
IC8:
2SC4215 O
UPD3140GS
PLL
BUFF
Q13,Q14: 2SC4226 R25
D11,D12: MA77
D13,D14: HVC350B
LOOP
IC2D: VCO BUFF
FIL
NJM13403V
Q15:
2SC4215 O
LPF
MOD
Q1:
Q2:
3SK131 L
3SK131 L
RF
BPF BPF
ATT
AMP
BPF
Q17: Q18: IC4:
2SC4215 O 2SC4226 R25 S–AV35
D16,17:
MA77 TX/RX PRE YGR PWR
DRIVE AMP AMP
SW
Q16:
2SC4215 O
BUFF
ANT
D1,D2:
XB15A308
ANT
LPF
SW
D21,22:
HSM88ASR
TXDET
RF OUT
DET
HVS
Q21: FMW1
Q23: 2SA1577 Q
APC PWR H/L
CTRL CTRL
Q22: DTC114EU
TMUTE
TX MUTE
CTRL
Q20: DTC144EU
NOTES :
Voltage line
Common line
TX line
RX line