Icom IC-PCR1500 Service Manual page 61

A
B
C
D
BFDET
L5V
BCMAD
16 1
VDD INPUT
X2
15 2
NC NC 4.194304MHZ
DTMSTD
14 3
EST OSC0
13 4
IC19
NC NC
12 BU8872FS 5
NC NC
DTMCK
11 6
ACK OSCI
10 7
NC NC
DTMSD
9 8
SD GND
C102 R64
0.1 15K
R2072
R2060 4.7K
120K
BRTONE
BVSCAF
R2206 1k
VSCAF
RTONE
CMAD
FDET
L5V
L5V
E
F
S1
G
SW-168
L5V
H
R20
10K
I
J
K
11 - 2
PCR2500 only
L5V
R2105
100K
R2079 R2090
470K 82K
R2080
82K
IC2021 R2086
LM2904PWR 39K
R2074
R2102
12K
C2124 150K
0.47
C2117
R2098
100P 33K
Q2018
2SC4617
R90
82K
R72 R74
R79
120K 12K 470K
5.1V
R80
82K
C129
0.1
IC21
R73
LM2904PWR
820K
R82 1.48V
39K
R102
150K
R83
150K R98
33K
0.61V
Q18
2SC4617
R46
22K
R242 R243 C282
22K 100K 0.1
7.72V
C70
D2029
0.1 1SS400
C53 IC12 5
1
LA4425A
470
0.4V
4
2
3
Q12
2SC4213
R41 D28
33K 1SS400
L5V
R2126
100
R2127 C2164 C2167
3.9K 0.022 0.01
R2226
47K
IC2023
SN74AHC2G53HDCT3 IC2027
LM2904PWR
1 8
COM VCC
2 7
INH Y0
3 6
GND Y1
4 5
GND A
R2130
22K
100
R126
R127
3.9K
R105
100K
5.1V 5.05V
FDET
C167
0.01
0V
IC27
LM2904PWR
1 8
COM VCC
R119
2 7
INH Y0 47K
3 6
GND Y1
4 5
GND A
2.48V
IC23
SN74AHC2G53HDCT3
2.54V
R130
4.98V
22K
IC17
SM6451B
R215 10K
1 16
MDT
RSTN
R216 10K
R221 2 15
MCK
680 ADRS1
R217 10K
3 14
ADRS2 MLEN
C275 4 13
DVDD DVSS
0.1
5 12
LOUT ROUT
6 11
RIN
LIN
7 10
R235
AVSS
AVDD
100
8 9 R218
VRR
VRL 27K
R219
27K
R220
27K
C283 R206
0.1
1k
LOGIC UNIT
APAFON
Explanatory notes
+B LINE
RX LINE (PCR1500/2500)
SPMUTE
RX LINE (PCR2500 only)
RX COMMON LINE
PCR 2500 only
EP2001
–5V
+33V
EP2002
MPZ1608S221A
BDSTB
L5V
BMDAT
BFDET
BMCK
BMST2
BP2STB
BAPAFINH
BP1STB
BMST1
IC2031
BPPS
SN74AHC2G53HDCT3
1 8
COM VCC
BFDET
2 7
BMST3
INH Y0
3 6 APAFOUT
GND Y1
4 5 BAPAFSEL
GND A
B8V
BAFO
FDET
L5V B5V
BOE
BIFOUT
BFDET
BNOIS
5.1V
BAFO
BAFO
IC4
SN74AHC2G53HDCT3
1 8 BSMAD
COM VCC
FDET
2 7
INH Y0
APAFOUT
3 6
GND Y1
4 5 APAFSEL
GND A
0V
0V
MCK
MDAT
VDAT
VCK
VSTB
EP42
MPZ1608S221A
–5V
EP41
MPZ1608S221A
+33V
PDSTB
DSTB
PDRES
R150
10
MDAT
R151
MCK 10
MST1
P2STB
P1STB
MST0
DPSTR
PPS
MST2
EP44
MPZ1608S221A
8V
5V
EP43
MPZ1608S221A
OE
IFOUT
FDET
NOIS
AFO
SMAD
SCAD
C2201
MPZ1608S221A
NFM18PC104R1C3
J2021
52808-1871
C2202
NFM21CC223R1H3 18
17
C2200 16
22P
15
14
R2147 C2198 13
10 22P
12
11
10 To
R2148 C2197
10 22P 9 MAIN-B UNIT
8 J2
7
C2194
22P 6
5
C2195 4
22P 3
2
1
C2193
22P
C2192
22P
C2189
22P
C2191
22P
PCR2500 only
EP2003
MPZ1608S221A
C2203
C2204 J2022
52808-1871
NFM18PC104R1C3
18
EP2004
C2179 17
MPZ1608S221A
16
BRF+5 NFM18PC104R1C3
15
14
C2180
NFM18PC104R1C3 13
22P
12
11
C2181
To
22P 10
MAIN-B UNIT
9
J3
8
C2182
7
22P
6
5
C2183
22P 4
3
2
C2184
1
22P
C2185
22P
J15
52808-1071
10
9
8
DSPS
7
6
5
4
IMST
3
DINT
2
DRES
1
R210
1M J13 P1
PD054-02M B4B-PH-SM4-TB
W8
1 1
W9 From
2 2
DSP
3
J16
4
J16
To DSP P1
1
2 or
3
To
4
OPTINAL UNIT
C266
UT-106
NFM18PC104R1C3
C267
NFM21CC223R1H3
C265
22P
J23
C264 52808-1871
22P
18
C263 17
22P
16
15
C262 14
22P 13
12
To
C261
11
MAIN-A UNIT
22P 10
9 J2
C258 8
22P 7
6
C257
5
22P
4
3
C256
2
22P 1
C255
22P
C254
22P
C250
470P
C252
22P
C183
NFM18PC104R1C3
J24
C187 52808-1871
NFM18PC104R1C3
18
C178 17
NFM18PC104R1C3 16
15
C240 14
22P 13
12
11 To
C243
10
22P MAIN-A UNIT
9
J3
8
C247
7
22P
6
5
C246
4
22P
3
2
C245
1
22P
C244
22P
C242
22P