Furuno FELCOM 12, Service Manual

Page: 43 / 118

3-3
2. Terminal Unit (IB-581)
CPU CARD
(AR-B1374)
VGA CARD
(AR-B1041)
T. BOARD
(16P0141)
LCD
POWER
(ACE-870C-B1)
FDD
(FD-235HF-7529) KEY BOARD
(BTC-5100C PS/2)
COM 1
COM 2
PRINTER
KEYBOARD
Power supply
for LCD
illumination
FIL
(16P0144)
+24V POWER
BREAKER
2A
CONTRAST
BRIGHT
VR
(16P0145)
IB-581
PRINTER
(PP-510)
IC-212
DET 1
+5V
±
5V/
±
12V
+24V
LCD
control
SIMM MODULE
256k
×
4
FLASH ROM
(AT29C040)
CPU
80386SX-33
Figure 3-3 Block Diagram of Terminal Unit (IB-581)