Block Diagram Of Display Unit - Furuno FR-2155 Service Manual

2.2 Block Diagram of Display Unit

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