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(2)
Troubleshooting
Only floating charge lamp is on after indicating "A.O", It's not charged.
220/380V Model : Measure the
voltage between input voltage
change over tabs 2-4 2-6 4-6
220,380,410,440V Model :
Measure the voltage in front of
AC INPUT MS S/W
After separating
battery connecter,
Check
convert the
YES
the rated
automatic/manual
voltage
selection switch on
the lower part of
PCB to manual.
Apply multi tester for input voltage change
over tab no. 6
Measure voltage between input tab no.8,
PCB CN4, and contact points with red reed
NO
putting black reed on the other side
Apply multi tester for input voltage change
over tab no. 6
Input power source is not
provided.
Check external lead cable.
Check the connection of
external input connecter
Check external NFB TRIP
In front of MS
Manual/Auto TAP Changer
AC
INPUT
MS
switch
ON
NO
TH contact fault
NO
Voltage
CN4 contact fault
220V?
PCB RELAY fault
TH manual
YES
restoration release
MS COIL fault
7-110
PCB
YES
YES
LP
lamp
ON?
NO
Change PCB
CN4 contact fault
PCB RY contact fault
CN4
TB.4 (380V)
TB.8(220V)
70
/
30W
M/S
B
T.B
short
8
7
bar
PCB RY
(LP lamp)
Voltage
tap
J2
TH
Manual
/Auto S/W
M/S
FAN
COIL
TB.6
M/S electrical circuit
RY
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