Furuno FAR-2107 Series Service Manual page 412

RFC (03P9346A)
HD
U14
BP GEN
(03P9347)
BP
U14
RF RX data
SPU
RF TX data
RPU-013
JP3 -J P5
PM Trig
PM Enable
PM
PM LEVL
+12V
Motor ON
TB
J917
(03P9349)
TX SIG
J917
BUZ OUT
TB803
CR9 (CPU RUN)
U30
HD
U30
BP
U15 RF RX
U15 RF TX
U17
(FPGA)
96MHz
U6
CLOCK
XC2100E-6TQ144I
BVER 0-3
3.3V
Vcc INT
U25
U26
(EEPROM)
U23
PM Trig
3.3V
2P5(2.5V)
U4/U5
Rer. VOL
U23
PM Enable
U12
PM LEVL
TEMP OUT
U20
(TEMP. DET)
U19
(RFC CPU)
Q13
U3
M30620FCNFP
U21
U12
STC ATT(NC)
Fig. 7.2.2 Block Diagram of RFC board
PIN ATT CONT
PIN ATT CONT
FET ATT
U10 FET ATT
TUNE GATE
TUNE GATE
SAMPL HOLD SAMPL HOLD
MSB ENABLE
MSB ENABLE
TEST SIG ENABL
TEST SIG ENABL
2.5V
STC-CONT
U16
Data D0-7
(D/A)
STC DETECT
2.5V
U7
U5
Data D0-7
(A/D)
U5
V TRIG
Q1, Q5, Q6
Q2, Q7, Q8
Q3, Q9, Q10
Q4, Q11, Q12
TX-HV PRTECT
TX HV INHBI
U22
M3 - L
MAG DETECT S - M2
Data D0-7
ADD. AD1-19
U28 U27
(Flash ROM) (RAM)
CS/WR/RD
U30
U29
Reset
(Reset)
PROTECT AD
TUNE SYNC
TUNING BIAS
U18
TUNE SCLK
(D/A) 2.5V
TUNE DIN
MAG CUR LVL U24
SHORT U3/21
2.5V
U12, 1
TUNE SYNC
TUNE
U13
TUNE SCLK
(D/A)
TUNE DIN
SDATA/CLK/DATAE
U11
VBW A/B
TUNE GAIN
TUNE AD
TUNE IND
D MONI AD
HEATER AD
HEATER VLT
U3
HEATER OFF
P12V AD
P5V AD
P32V AD
N12V AD
N12V AD
7-7
7.2 Antenna Unit
TEST SIG
TRIG 1
TRIG 2
TRIG 3
TRIG 4
SHORT
2.5V
MAG-CUR-IN
U8
HEATER
TUNE
D MONI
HEATER
HEATER VLT
HEATER OFF
P12V
P5V
P32V
N12V
N12V
IF
(03P9335)
MD
(03P9244)
IF
(03P9335)
PWR(RF)
(03P9348)