Icom IC-R30 Service Manual page 50

• LOGIC UNIT (4/4: for #12 and #20)
2.3 V
DSP1.4 C236
DSP3
NFM15PC104R1A3
1.4 V
C237
NFM15PC104R1A3
3.0 V
C235
NFM15PC104R1A3
I2S3_RX
I2S3_DX
I2S3_FS
I2S3_CLK
PWADN
PWDAN
R269
56
IC203
CLK
4 3
2
5 1
SN74AUP1T04DCKR
R281 R282 R285
120k 150k 180k
TPS62400DRCR
SW1 DEF_1
6 5 NFM15PC104R1A3
EN1 FB1
L202
7 4
GND VIN
8 3
LQM2MPN2R2NG0L
EN2 MODE/DATA
9 2 C273
SW2 ADJ2
10 1
IC206
C254
33P
R283 R287 R293
120k 120k 180k
TLV70030DCKR
NC EN
4 3
GND
DSP3 2
OUT IN
5 1
IC205
C268
NFM15PC104R1A3
AK4555VT
SDTI SDTO
9 8
LRCK DEM1
10 7
MCLK DEM0
11 6
SCLK VDD
12 5
PWADN VSS R348
R296
13 4
PWDAN AINL
14 3
AOUTL AINR 1k 4.7k
15 2
R349
OUTR VCOM R295
16 1
IC204
1k
4.7k
R289
100
R284
C252
2.2 0
CR-997A Q200
LDTC144EE
C247 C250 GND VCONT
2 1
OUT VCC
3 4
0.1 0.01
X200
VCC
3.6 V
C277
C276
0.033
0.01
C278
0.015
3.0 V
A_TSQL
A_DAFIN
B_DAFIN
A-Band
B_TSQL
A_TSQL
B_VSC
A_VSC
A_WXALT
B-Band
LOGIC UNIT
(1/4)
B_TSQL
B_WXALT
B_VSC
B_WXALT
9-4
C282 C287
0.0047 220P
R308 R313 R318
10k 82k 33k
IC208
1 8 C288
R319 R324 C311
2 7
3 6
1k 1
1 0
4 5
NJU7057RB1
R310
100k
IC209
R311
3
R325 R336
1
10k
2
82k 120k
NJU7058V
R330 R337 C305
R320
IC209
330k 39k 0 0.1
5
R321
7
6
39k
NJU7058V
R333 R340
22k 0
IC209
R307 R312
10
R327 R338 C307
8
56k 10k
9
82k 120k 1
NJU7058V
R331
R322 R339 C308
IC209
330k 39k 0 0.1
12
R323
14
13
39k
NJU7058V
R334
R341
22k 0
* Refer to the PARTS LIST for the value and name of component.
GPS2
PCON2
GPSC
LOGIC UNIT
PFMC (2/4)
DSPC
VCC
LOGIC UNIT
A_DAFOUT
(2/4)
3.0 V
LOG3
LOG3
LOGIC UNIT
A_DAFIN
(2/4)
B_DAFIN
4
V+ IC209
GND NJU7058V
11
IC210
1 8
COM VCC
2 7
INH CH0 AFM_DET
3 6 LOGIC UNIT
WFM_DET
VEE CH1
4 5 (2/4)
GND A WDETSW
TC7W53FK
DETSW_INH
LOGIC UNIT
R121
(2/4)
BTAF_BACK
10k
LOGIC UNIT
BFM_DET
(2/4)
Explanatory notes
RX Line
Voltage Line
LOGIC UNIT
DCKSFT
(2/4)