Mitsubishi Electric M80 Series Maintenance Manual page 47

M800/M80/E80 Series Maintenance Manual
1 System Basic Configuration
FCU8-MU542 / FCU8-MA542 / FCU8-MU541 / FCU8-MA541(M800S)
FCU8-MU511 / FCU8-MU512 / FCU8-MU501 / FCU8-MU502(M80)
FCU8-MU513 / FCU8-MU514(E80)
[LED]
No. Name
(1) 24VIN Lit (Green)
Not lit
(2) DCOUT Lit (Green)
Not lit
(3) LCDON Lit (Green)
Not lit
(4) READY Lit (Green)
Not lit
(5) ERR Lit (Red)
Not lit
IB-1501273-F
(1)
(2)
(3)
(4)
(5)
Lamp state
24VDC power is being supplied from the external power supply.
The followings may have caused an error:
No 24VDC-power supply from the external power supply.
Disconnection of fuse near DCIN connector.
Failure of LED.
Internal voltage is normally output.
The followings may have caused an error:
No 24V-power supply from the external power supply.
Failure in any of the power output circuits.
Failure of LED or IC which helps turn the LED ON.
12VDC for the backlight of display unit is normally output.
The followings may have caused an error:
Failure of 12VDC output in control unit.
24VDC input voltage is +20V or less.
Ready ON state.
Ready OFF state.
H/W is not operating properly. The followings may have caused an error:
Occurrence of NC watchdog error.
Failure of main CPU card.
H/W is operating properly.
Details
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