Icom IC-FR4000 Service Manual page 75

Mount B-Side
J1 J2
to RX UNIT J2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
L10
BLM31PG121SN1
DISC
SQL
DISC
TUNE
RLV
RVCON
RSSI
A
E TONE
I TONE
TXAF
A5V
A5V
B
C
D VCC2
GND2
VCC2
M9V
GND2
E
C/DSW
C/DSW
E R/B
E MONI
MBEEP
NDET NDET
F
CWO
E R/B
KBEEP
E MONI
Q7 XP1214
COAXSW 4
3
2
5
M/SO 1
Q8
XP1111
M/SI 1 5 M/SI
TXDT2
R227
2
C223 RXDT2
47k
47p E PT1
E PT1 3 4
E PT2
E PT1
D0
D1
R228 C224
Q9
47k 47p D2
D3
XP1111
D4
E PT2 1 5 E PT2
NDET
C225
R229
2 SW
47k 47p
D0 C221
3 4
25TDTMFO 47p
D0
CTDTO
R230 C226 PSD
Q10
47k 47p
RVSWR
XP1111
FWSWR
D1
D1 TEMP
1 5
T/RLV
C227
R231
2
47k 47p RSSI
D2
3 4
D2
R232 C228
Q11
47p
47k
XP1111
D3
D3
1 5
C229
R233
2
47k 47p
D4
3 4
D4
R234
C230
47k 47p
R239 R241
10
1k
G
PSD
T/RLV
TEMP
SW
1 8 1 8
2 7 TLV 2 7 PATEMP
3 3 6
6 RLV REGTEMP
C437
4 5 4 5
R251
0.1
100k
PSD
IC53 TC4W53FU IC32 TC4W53FU
H
RSSI
I
L5V
L9V
L9V
J3
to TX UNIT J3 to FRONT UNIT J2
24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
L9
BLM31PG121SN1
5.0V
L7
BLM31PG121SN1
A5V
D5V
3
DCL 4 DCL
Q18
2
XP1114
PROGL 5 1 PROGL
TXL 4 3 TXL
Q19
2
XP1114
RMTL 5 1 RMTL
BASEL BASEL
4 3
Q20
2
XP1114
BUSYL 5 BUSYL
1
VCC2
GND2
M9V
BASEL
D8 MA2S111
I MONI
M MONI D9 MA2S111 R247
100k MONI R222
E MONI
1k
D10 MA2S111
D15 MA2S111
CHUP
CHDN
R246 C212
C210
D16 MA2S111
100k C209 47p C211
47p
47p 47p
D17 MA2S111
DISP
PROG
RS D18 MA2S111
ENA
C213 R223
C216 C215
47p 1k
C214
47p 47p
47p
DB4
R224
DB5
1k
DB6
DB7
C218 C217 C220
47p 47p 47p C219
47p
C5V
CVCC
GND
C450
0.1
C232
C231 R237
R238
47p
47p
1k 1k
PB1/A9/T10CD3
COAXSW COAXSW 26
PB4/A12/TIOCA4
CWO 27
PB5/A13/TIOCB4
28
KBEEP
PB6/A14/TIOCA5
M/SO M/SO 29
PB7/A15/TIOCB5
30
M/SI
PA0/A16
TXDT2 31
PA1/A17/TXD2
RXDT2 32
PA2/A18/RXD2
E PT1 33
PA3/A19/SCK2
E PT2 34
P10/TIOCA0/A20
35
D0
P11/TIOCB0/A21
D1 36
CPU
P12/TIOCC0/TCLK
D2 37
P13/TIOCD0/TCLK
IC33
D3 38
P14/TIOCA1/IRQ0
D4 39 HD64F2238FA13
P15/TIOCB1/TCLK
40
NDET
P16/TIOCA2/IRQ1
SW 41
R235 1k
P17/TIOCB2/TCLK
42
AVSS
R236 25TDTMFO 43
1k P97/DA1
CTDTO 44
P96/DA0
45
PSD
P47/AN7
R512 1k RVSWR 46
P46/AN6
47
FWSWR
P45/AN5
TEMP 48
P44/AN4 40ms
T/RLV 49
P43/AN3
50
P42/AN2
RSSI
C130
C135
47p 47p
C133 C131
C134 C132
25TI 47p 47p 47p 47p 25TI
DTCSI DTCSI
IC35 C137 C136
47p
47p
BU4011BFV
C5V
C5V
5.0V C144
Q3
IC36
0.1
DTC144E
BU4011BFV
R462
R461
R242 100k
100k R195
100k
47k
W1
R243
100k
D6
MA2S111
R183
C5V
Q2
100k
C145 2SC4081
0.1
C147
R191
0.1
R190 R182
C146 10k
10k R194
100k
0.1 390k
OUT 1
C138
VDD 2
C149 47p
VSS 3 R192
R193 C148 0.1
390k
470k 0.001
R240
IC34
1k
INT
S-80842CLUA
RST
MD2
12 - 6
J4
to FRONT UNIT J1
8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1
VCC2
GND2
Explanatory notes
Voltage line
W12 L6 CP28
TX line
RX line
L6
BLM31PG121SN1
A5V
Q24
PE2STB
2SJ377
SDTO
Q17
D5V
SCK
DTC144EE
R258
AFMUTE1
C244 56k
D5C AFMUTE2
0.001
MICMUTE1
R256 R257
MICMUTE2
22 33k
4.9V
C192
C191
47p
47p
VCC2 C193
C190
GND2 47p 47p
M9V
R/BSW
R225
D11
100k E R/B
R200
D12 I R/B
470
R/B D44 REMOTE
D45 SPMUTE
D46 M PTT
C200
C198
C199 C201
47p 47p
D11, D12, D44–D46
47p 47p
CLONE
MA2S111
DA1STB
RTS
R201
CTS
1k
TMUTE2
TMUTE1
C202 C204
C205
C203 47p 47p
47p
47p
TUNLK
W/NS
TPLSTB
R9C
RPLSTB
R202
SDTO SDTO
C207
470 C208
47p 47p SCK SCK
C206
SDTO
47p
SCK
C171
47p SDTO
SCK
C170 47p
SDTO
C169 47p
SCK
C168 47p
R196
100 C/DSW
470
PE4/D4
99 RUNLK
PE3/D3
98
SCK
PE2/D2
97 SDTO
PE1/D1
96
DA1STB
PE0/D0
95 DA2STB
PG4/CS0
94 SDTI
PG3/CS1
93 CCS
PG2/CS2
92 CIRQ CIRQ
PG1/CS3/IRQ7
91
PE1STB PE1STB
PG0/IRQ6
90 PE2STB PE2STB
P70/TMRI01
89 PE3STB PE3STB
P71/TMRI23
88
IOE IOE
P72/TMO0/CS6
87 ONHOOK ONHOOK
P73/TMO1/CS7
86
DTACK DTACK
P74/TMO2/MRES
85 DTMFD DTMFD
P75/TMO3/SCK3
84 NC NC
P76/RXD3
83 NC NC
P77/TXD3
82 DTSTD DTSTD
3.3V P36
81
DTSEL2 DTSEL2
P35/SCK1/SCL0
80 RXDT1 RXDT1
P34/RXD1/SDA0
79
TXDT1 TXDT1
P33/TXD1/SCL1
78 DTSEL1 DTSEL1
P32/SCK0/SDA1
77 RXDT0
P31/RXD0 IOE
76 TXDT0 R214
P30/TXD0
ONHOOK
1k
R215
DTACK
1k
DTMFD
C172
C173
47p R204
47p 100k
INT
TXDT0 RXDT0
R198 R205
SHIFT
1k
100k
RING
HOOKC
TELSTB
MDT
MCK
TELBUSY
C164
C242 D14
R184 47p
39p MA2S077
1k RXDT1
TXDT1
X2 R185
CR-681 12k
12.288 MHz
R189
W17
C140 C143 1k
15p 0.01
C139
R245 C142 C141
22p
12k 0.01 47p
C152
R186 C151 C154 C153
12k 47p 47p 47p 47p
IC37
C5V
HN58X2464TI
D13 SB07-03C
Q45
R187 R188
8
1
A0 VCC
2.7k 2.7k 2SA1362
2 7 R417
A1 WC
3 6 10
A2 SCL
L5
4 5
VSS SDA
BLM31PG121SN1
1
GND
2
VIN
3
VOUT
C241
C240
IC38
10
0.001
S-812C50AMC
13.6V
VCC2
GND2
Power supply: DC13.6V
LOGIC UNIT
Mesurement Frequency: TX 465.500 MHz,
RX 465.125 MHz
Inner resister of the volt meter: 50 kΩ/V
M9V
L9V
A5V
C248
10
1 16 R217
STR VDD
MICMUTE3
2 15 1k
D OE
3 14
CLK Q5 C249
TELMUTE1
4 13
Q1 Q6
47
5 12
Q2 Q7
TELMUTE2
6 11
Q3 Q8
7 10 TELBMR TELBMR
Q4 QS
8 9
VSS QS
C180
C250
47p
R220 IC40 0.1
VCC2
1k
BU4094BCFV
C179 C178 C181 L9V
47p 47p 0.001 L5V
L8 BLM31PG121SN1
M9V
IOE
R/BSW
IOE
R511
47k
C251
0.1
16
1
STR VDD
R221 15
2
D OE
470 14
3 DCL
Q5
CLK
BASEL 4 13 PROGL
Q6
Q1
12
RMTL 5 D5C
Q7
Q2
11
BUSYL 6
Q8
Q3
TXL 7 10 C184
QS
Q4 C182
8 9 47p
VSS QS R216
47p
1k
C185
IC39
C188
47p
C187
47p BU4094BCFV
47p
C186 C189 1 16 R218
STR VDD
47p 47p
2 15 1k
R219
D OE
SCK 3 14 OPT3
1k
CLK Q5
4 13 OPT1
Q1 Q6
R/BSW R/BSW 5 12 M9C
Q2 Q7
W/NS 6 11
Q3 Q8
R9C 7 10
Q4 QS
8 9
VSS QS
C174
C195
C197
47p L5V 47p C176
47p IC41
47p
BU4094BCFV
C194 C252
47p
0.1
TXL TXL
BUSYL
BUSYL C177
47p
CLONE CLONE
DA1STB
TELBMR
E PT1
DA1STB C253
0.001
DA2STB
IC42
SDTI
CCS TLP121
L5V
C157 R250
R197 47p 100k BUSYL
470
R460
C156
390
47p R450
C155 C158 390
Q44
R199 47p 47p
1k DTA144EE
CIRQ
PE1STB
AFOUT1
PE2STB
PE3STB
R264
C160 C159 C162 C161 560
R203 47p 47p 47p
47p
1k
E MOD1
IOE
ONHOOK
L5V 4
DTACK
BUSYL
DTMFD 5
C435
6
C166 C167 C436 47p
47p 47p
47p
BUSYOUT
DTSTD
4
DTSEL2
DTSEL1
TXL
5
Q50
C165 6
C163
XP4311
47p 47p
TXOUT
C5V
L5V
E PT1
CLONE
Q5 2SA1576
L5V
R208
TELBUSY R206
R207
C150 47k
RING R211
47k Q6 D7
0.1 680
HOOKC 1k MA2S111
2SC4081
TELSTB
R212 33k
Q4 2SC4081
L5V
L11
Q25
BLM31PG121SN1
R213
R210
2SC4081
47k 33k R209 47k
Q48
IMZ4 T108
L9V
Q26 XP4311
RXDT0 Q27 XP4311
1 4
C239 6 R259
470 100k
2 D20 5
5
5 D19 6
3 4
NC C433
D19–D22
0.001
TXDT0
4 MA2S111
NC
C434 Q28 XP4311
RTS
Q29 XP4311
R509
10
R260
10k 1 6 4
100k
D43
2 5 D22
5
MA2S111
D21
R508 3 4 6
10k
CTS
RSSI
L5V
L9V
9.0V
5
J5
L4 BLM31PG121SN1
VCC2
1
2
GND2 to REG UNIT J13
3
GND
CP27 C233 4
0.001
6
J6
GND
10
L1 BLM31PG121SN1
M9V
9
8
L2 BLM31PG121SN1
L9V
7
6
L3 BLM31PG121SN1
A5V to REG UNIT J14
5
4
REGTEMP REGTEMP
3
PSD PSD
2
M9C M9C
1
C247
C438
47
0.001 C234
0.001
DCGND
C237 C235
0.001 0.001
C238 C236
J7
0.001
0.001
30
1
29
2
L5V
28
MICO MICO 3
4 27
MICI MICI
26
5
25
6
24
7
R525
SIGOUT 1k SIGOUT 23
8
to OPTIONAL UNIT
DISCO DISCO
22
9
AFOUT
AFOUT
21
10
20
OPT3 OPT3 11
CCS
19
12
18
13
SDTO
17
14
SDTI
16
15
SCK
J8
30
1
29
2
L5V
28
3
27
4
26
5
25
6
24
7
23 to OPTIONAL UNIT
SIGOUT 8
DISCO
22
OPT1
OPT1 9
CCS 21
10
SDTO
20
11
SDTI
CCS
12 19
CIRQ CIRQ
18
SCK 13
SDTO
17
14
SDTI
16
15
SCK
M9C M9C
R261 J9
47k
D23 SP SP
R262 1 12
SPG SPG
470 2
–PTT –PTT
3
+PTT +PTT
D24 4
IC43
D23–D26 –AFOUT
5
+AFOUT
TLP121 MA2S111 to JACK1 UNIT J3
D26 6
–EXTMOD
7
+EXTMOD
C254 8
+BUSY
10 9
D25 –BUSY
10
R265
11 13
R263 1.2k –AFOUT
560
+AFOUT
T1 12T01
–EXTMOD
+EXTMOD
T2 12T01
J10
F1
3 VCC2
Q49 14
+E15V
2 XP4311 +E15V
1
DC GND
2
1 DISC OUT DISC OUT
3
AF GND 4
AF OUT
AF OUT
5
AF GND
6
E MOD2 E MOD2
7 to JACK2 UNIT J3
3
E MODG
8
E MOD3
E MOD3
9
2
E MODG
10
E DTCS E DTCS
11
1
E MODG
12
C439
R510 RSSI
13
0.1
10
L5V
IC44
5 15
1
4 NJM2125F
3
R268
2 J11
47k 14
BUSYOUT BUSYOUT
1
TXOUT TXOUT
2
COAXSW COAXSW
3
M/SO M/SO
4
M/SI M/SI
5
D0
D0
6
D1/CTS to JACK2 UNIT J2
7
D2/RTS
8
D3/DTO
9
D4/DTI
10
E R/B
E R/B
11
E PT2 E PT2
12
E MONI E MONI
3 13
CP19
2 15
D4
1
CP20
CP21
D3
CP22
3 3 CP23
2
D2
1
CP24
CP25
D1
CP26