Control Unit: Fs-2575C - Furuno FS-1575 Service Manual

7.8 Control Unit: FS-2575C

This unit consists of the C-CPU, C-IF, and PANEL boards. For communication between
the control unit and the Transceiver unit, refer to information on page 7-66.
INT SP
INT SP
15V
5V
OVEN LED
3.3V
J313
LCD
JJ308
LCD
U4
BACK LIGHT
Driver
JJ309
KEY
KEY ROW, COL
CH
Encoder
CH1, 2
RF GAIN
Encoder
PWR ON
VOL LEVEL
PANEL
05P0844
U1: PANEL
TEMP
3.3VA
5VD
U2
3.3V Reg.
LEDs KEY LED
ALARM LED
DISTRESS LED
R226, 27
0
15V
PTT N
F-HS
HOOK N
HS MIC H
SP
J307
J312
CONFIDENTIAL (internal use only)
This confidential document is used only by FURUNO authorized persons.
It is strictly prohibited to reproduce the document in whole or in part without prior written permission of FURUNO.
J218
15V
5V
U11
3.3V
1.2V
OVEN 12V/0V
SW Reg.
PWR ON
3.3VA
J213
ADDRESS
J211
CPU HW VER1-3
PNLHW VER1, 2
PNL TEMP
CS
VOL LEVEL
U3
CPU
SH-2A
CR2
CS
4bit
S2
DIP SW
P FAIL
U2
POWER FAIL
SYS RESET
24.576MHz
CONT
Y1
SOFT RESET
U10
FPGA
PNLHW VER1, 2
CR5
4bit
S3
DIP SW
PTT N
HOOK N
HS R HOOK N/R PTT IN
J212
Fig. 7.8.1 FS-2575C Block Diagram
C-CPU
05P0852
3.3VD
5VD
U13
SW Reg.
U4
DATA
SDRAM
CONT
15V
5VD
3.3VD
U6
F.ROM
AF AMP TEMP
AMP MUTE1, AMP MUTE2
RMT RDX/TDX,
RMT RE N
NBDP TX/RX
PRINTER DATA/CONT
KEY ALARM
INT SP OUT
U12
HS MIC2
CODEC
HS MIC1
HS SP OUT
U14, 16
AUX1-3
J110
7-70
7.8 Control Unit: FS-2575C
C-IF
05P0853
OVEN 12V/0V
PWR ON
3.3VA
5VD
U4
3.3V Reg.
15V
L4, Q1,
15VA
3.3VD 5VD
Q2, Q3
U1
15V Reg.
SW Reg.
CONT DAT-A/B
u2
RS485 I/F
AF AMP TEMP U7
AF AMP TEMP
AMP MUTE1
AF OUT
Q4 U6
AMP MUTE2
AF P-AMP
NBDP TX/RX
U11 NBDP SD/RD
RS232C I/F
P DATA0-7 P DATA0-7
U9
Transciver
STROBE N FPGA,
STROBE N,
INIR N FPGA
INIR N
U12
Transciver
ACK N FPGA,
ACK N, BUSY,
BUSY FPGA
P EMP
U8
P EMP FPGA
HS R SP
HS R MIC H HS MIC H
U5
R PTT IN PTT N
Q6
HS R HOOK N
HOOK N
Q7
15VA
1k x3
AUX1-3
R18-20
T/R
J101
EXT SP
J105
NBDP
J102
PRINTER
J103
R-H.S
J104