10 Troubleshooting
Checking procedure for main parts
SMGB0091 rev.2 - 11/2015
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10
10.4 Checking procedure for main parts
10.4.1 Checking procedure for the control PCB (PCB1)
DC310-340V (for
power circuit: 1~
230V) is applied to P1
and VDC-2.*1)
Yes
No
Failure of AC Power Circuit
of RASC PCB
Turn ON RASC unit
Connect PCN406.
Then return to
AC5V is applied between
VCC05 and GND1. *1)
Voltage is normal.
LED4 is faulty.
Failure of AC Power Circuit
of RASC PCB
Yes
DC280V system is normal
Yes
No
No
LED4 (Red) is turned
ON
Fuse EF1 is blowout
PCN406 is
disconnected
DC310-340V (for
power circuit: 1~
230V) is applied to P1
and VDC-2.*1)
Yes
Yes
Yes
LED1 (Red) is turned
ON
DC5V system is normal
DC13V is applied between
VCC12 and GND1. *1)
DC12V system is normal
DC15V is applied between
VCC15-1 and VCD-2. *1)
DC280V system is normal
AC5V is applied between
VCC05 and GND1. *1)
Voltage is normal.
LED1 is faulty.
Failure of DC Power Circuit
of RASC PCB
Failure of DC Power Circuit
of RASC PCB
Failure of DC Power Circuit
of RASC PCB
Yes
Yes
No
No
No
No
Yes
No
No
No
?
N O T E
*1) The table in the next page shows the check points and the normal range of voltage in the case that the voltage on the RASC unit PCB
is measured with a circuit tester. The setting of the circuit tester shall be set within the DC voltage measurement range when the following
voltages are measured.