Af Unit - Icom IC-M504 Service Manual

11-2 AF UNIT

S5V
AF UNIT
R583
4.9V 47
C556
DETM 0.47
R294
10
S5V
H/L
2.7V
R295
8.2k
VBIAS
R316
82k
J3
SCK PCK
C313
5V 0.0047
SDATA PDATA
GND
OPSTB OPSTB
OPTIN OPTIN
to option MICI
SCRAMBLER SCON SCON
unit
DETI
GND
MICO
GND
DETO
GND
J8
HV
to CHASSIS
unit W1
J9
GND
CP11
HV
CP12 HV
to MAIN
CP13 GND S5V
unit J1
CP14
GND
J2
PCK PCK
PDATA PDATA
UNLK UNLK
PSTB PSTB
SQL SQL
S5V
DETM
DET70
MOD
to MAIN
GND
unit J2
GND
GND
TXDET TXDET
BPFV BPFV
TMUTE TMUTE
ATT ATT
H/L H/L
RCV
SEND
J1
SP+
SP+
SP-
SP-
HV
VCC
S5V
PWRON
GND
SEND
RCV
GND
VOL1 VOL1
BEEP
VOL2 VOL2
FOGC FOGC
FOG FOG
to LOGIC
EVDATA EVDATA
board J1
EVCK EVCK
WXDEC
BPFV BPFV
DSDM
SQL SQL
DSD70
TXDET TXDET
DSCENC
MICG MICG
ICF3 ICF3
MIC MIC
EXTTXD EXTTXD
EXTRXD EXTRXD
PDATA PDATA
UNLK UNLK
PCK PCK
PSTB PSTB
EXTOE EXTOE
EXTSTB EXTSTB
OPTIN OPTIN
OPSTB OPSTB
Q38
R273 R274 R275
KTC4075
10k
10k 10k
R277
10k
C271 C274
0.1 0.022
WXDEC
CP2
WXDEC
DSDM
DET70
DETMI
4.8V
AF5V
R334
1M
IC26
KIC7W53FK
DET 1 8 AF5V
COM VCC
R335
2 7 DETMI
1M
INH CH0
3 6 DET70I
VEE CH1
4 5 H/L
GND A
VBIAS
C558
0.47
DET DETI
AF5V
R315
R312 C306 R307 C305
82k 0.01
27k 12p 1k
R308
IC3
560k
CD4066BPWR
IC8 MICIM 1
NJM4558M I/O1 VDD
MICOO 2
O/I1 CONT1
1 8 MICOO 3
O/I2 CONT4
2 7 MICO 4
I/O2
3 6 SCUSE 5
CONT2
4 5 SCUSE 6
CONT3
7
VSS
MOD
PWR SW
Q61
ON 5.0V Q62
TPC6104
OF 0V KRC404
PWRON
R441
R442
100k 47k
4.9V
CP23
VCC
CP20
S5V
EXTOE
EXTSTB
PDATA
PCK
H/L
TMUTE
ATT
RMUTEM
Explanatory notes
VOLTAGE LINE
MMUTEM
MMUTES
TX LINE
MMUTEH
PTTM
RX LINE
COMMON LINE
11 - 2
DSC5V
4.5V
C573
0.033
R581
470k
C574
IC12
0.033
LM2904PWR
1 8
2 7
R573 R574 R575
3 6
C571 10k 10k 10k
4 5
0.1
C579
0.01
4.2V
C234
0.022
R231
C231 C233
22k 0.022
0.47
R232
15k
Q31
KTC4075
VBIAS
AF5V
R298 C303 R303 C302
0 270p 6.8k 0.1
MICAFO
R304
8.2k
14
13 SCPASS
12 SCPASS IC7
NJM4558M
11 DETI
I/O4
10 DETOO 1 8
O/I4
9 DETOO 2 7
O/I3
8 DETO 3 6
I/O3
MICG 4 5
C322
1
S5V
VCC
IC10
13.8V KIA7805API 4.9V
VCC S5V
I O
COM
VCC 13.8V
C351 R353
560k
0.01
IC27
CD4094BPWR
SQL
1 16 S5V
STR V+ OPEN 0.0V C352 R354
2 15 EXTOE
D OE CLOSE 4.9V 2.2 15k
3 14 RMUTES
CLK Q5
4 13 RMUTEH
Q1 Q6
SPMUTE
5 12
Q2 Q7
6 11
Q3 Q8
7 10
Q4 Q'S
8 9
GND QS
C353
1
IC28
Q65
CD4094BPWR
KTC2875
1 16 S5V
STR V+
2 15 EXTOE
D OE
PTTS
3 14
CLK Q5
SCPASS
4 13
Q1 Q6
SCUSE
5 12
Q2 Q7
SCON
6 11
Q3 Q8
7 10
Q4 Q'S
8 9
GND QS
DSC5V
C586
IC15 0.033
NJM2211M
C581
1 14
0.01 V+ CAP
2 13
IN CAP
3 12
LOCK R
4 11
GND LOOP
5 10
Q REF R584
6 9
Q NC 100k
DSD70 7 8
DATA FSK
C578 C577
0.01 0.01
CP7
IC4
CD4066BPWR
1 14
Q32 FILRMH AF5V
I/O1 VDD
2 13
KTC4075 FOGIN FOGC
O/I1 CONT1
3 12
FILRMS RMUTEH
O/I2 CONT4
FILO 4 11 FILRMH
R239 I/O2 I/O4
RMUTES 5 10 FILO
33k CONT2 O/I4
RMUTEM 6 9 FILO
C238 CONT3 O/I3
7 8 FILRMM
R238 2.2 VSS I/O3
33K
C236 0.8V
0.0022
0.4V
AF5V
VBIAS
C249 R255
1 2.7k
VOL1
IC5
CD4066BPWR
C250
VOLO 1 14 AF5V
1
I/O1 VDD MIC
INCOM 2 13 MMUTEM
O/I1 CONT1
INCOM 3 12 PTTM
O/I2 CONT4
FILOS 4 11 MMIC
I/O2 I/O4
MMUTES 5 10 MICAF
CONT2 O/I4
MMUTEH 6 9 HAILO
CONT3 O/I3
7 8 INCOM
VSS I/O3
C245
R411
0.22 100k
VCC
13.8V
Q71
12.8V
2SB1143
COM12V MICAF
R596
1k
S5V HAVOL
Q72
XP6501
MICAFO
VCC
HAVOLO
C356 R343
470
0
SP+ SP+
5
1
4
2
IC9
3 LA4425A
R344
0
GND
4.8V
AF5V
R362
47k
C246
2.2
FILOS R361
33k 5 C248
3
2.2
4
1
IC29
2
NJM2107F
VBIAS
R363
470k
4.8V
AF5V
2.7V
VBIAS
C263 R265 C264
0.22
2.2 4.7k
IC6
CD4066BPWR
1 14 AF5V
I/O1 VDD
2 13 AF5V
O/I1 CONT1
SMICIN 3 12 PTTC
O/I2 CONT4 C265
MICAF 4 11 SAFO
2.2
I/O2 I/O4
PTTS 5 10 AFMIC
CONT2 O/I4
/PTTC 6 9 AFMIC
CONT3 O/I3
7 8 SMIC
VSS I/O3
/PTTC PTTC
Q37
KRA304
J5
COM12V VCC
to CHASSIS
GND
unit W3
EXTTXD
J6
AF/MIC
MICG
PTTC
to CHASSIS
EXTTXD
unit W3
EXTRXD EXTRXD
ICF3
R443
ICF3 0
J12
HV
HAILO+
to CHASSIS
R444
HAILO-
unit W2
0
IC14
LA4485
PAO+
PAO-
R423 C450
0 0.47
IC13 S5V
M62429FP
R429
1 8
100
VIN1 VIN2
2 7
VOUT1 VOUT2 HAMUTE
3 6 S5V
GND VCC C448
4 5
DATA CLK 2.2
Q66
KRA304
J11
SP+
to CHASSIS
SP-
unit W1
HAILER PTT ON /RX SP ON 0.0V
HAILER PTT OFF /RX SP OFF 4.7V