Furuno FR-2155, Service Manual

Page: 17 / 152

2-3
HD
BP
Buffer
VIDEO
EXT HD
EXT BP
EXT TRIG
EXT VIDEO
MOTHER
Board
(03P9251)
Level Adj.
Selection SW
(Menu-Selection)
Scanner Unit
HD,BP,
TRIG,VIDEO
RJ-7 or
Main Radar
EXT HD,EXT BP,
EXT TRIG,
EXT VIDEO
MOTHER
Board
(03P9251)
Buffer
Buffer
Buffer
Buffer
Buffer
Buffer Level Adj.
INT Board(03P9252)
Video Amp.
Level Adj.
SPU Board(03P9253)
GYRO
Board
(64P1106)
Photo
Coupler
NAV DATA
Noise
Filter
SPEED LOG
Photo
Coupler
AD-100
A/D CONV.
POWER
A/D CONV.
Signal
Proeessor
Memory
RP Board(14P0298)
Priority
(layering)
Color palette
D/A CONV.
CRT
CPU
Buffer
HD,BP
VIDEO
Buffer
Gate Array
(G/A)
A/D CONV. Front end
HD,BP VIDEO
D.P RAM
D.S.P
MAIN
CPU
D.P RAM
ARP Board(18P9002)
SPD
CRS
D.P RAM
Scrolling
VRAM
AGDC
CPU
Multi-
plexer
L/L,
S/C
PWR Board (03P9245)
Regulator Protector
Overcurrent
Detector
Rectifier
Ships Mains
AC 100/110/115 V
PM Board (03P9225)
Ships Mains
AC 100/110/115 V
or
AC 220/230 V Performance
Monitor
+12 V
CPU
Switches
(PM ON/OFF,
Degauss)
PAL Board
(03P9254)
Switches
(Radar Picture,
Menu)
PAR Board
(03P9256)
DEGAUSS Board(PDM9025)
Power
Magnetism
Detector
Degauss
PM ON
HALL 1/2
DEGAUSS
Trackball
TB301
Level CONV.
(TTL RS232C)
To G/A on SPU
PNL Board(03P9255)
SPD
CRS
(Optional)
GYROCOMPASS
To degauso coil
2.2 Block Diagram of Display Unit
FR2155-SME-22
Video
From ACRTC
H SYNC/
V SYNC/
DOT CLK
P.F. Signal from PWR Board
Buffer
Card
I/F Board
(14P0299)
Chart Card/
ERC Card/
RAM Card
H SYNC(64 kHz),
V SYNC(60 Hz),
DOT CLK(108.5 MHz)
(Optional)
(Optional)
(Optional)
(Optional)
+12V (PSU-004)