Led Check - Furuno FAR-2107 Series Service Manual

6.3 LED Check

6.3.1 Processor unit： ： ： ： RPU-013
1. SPU board
Board Part number
CR2
CR3
SPU
CR4
(03P9337)
CR5
CR8
ARPA CPU
CR8
(U74)
every
(Blink
0.5 second )
Normal status
Light
Light
Blink
every second
Blink
every second
Blink
every 0.5 second
every 1 second
CR5 (Blink
Fig. 6.3.1 Location of LEDs on SPU Board
6-23
Table 6.3.1 LEDs on SPU board
Function
Check for Vcc: +5 VDC supply from PWR
board.
Check for Vcc: +3.3 VDC supply from PWR
board.
RUN check of Main CPU (U21)
RUN check of DRW CPU (U19)
RUN check of ARPA CPU (U74)
MAIN CPU
CR4
(U21)
(Blink
DRW CPU
(U19)
)
6.3 LED Check
every second
)
CR2/CR3 (Normally light)