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10. TROUBLESHOOTING GUIDE
10-1. Troubleshooting Based on Pilot Lamp Indications
Phenomenon
The charge time lamp and the
charge status lamp fail to light.
The charge time lamp does not
light red or orange or green
continuously or does not flash
red when a battery is inserted.
The charge status lamp flashes
orange rapidly (in 0.2-second
intervals) when a battery is
inserted.
(1) Faulty AC cord
(2) Blown fuse (5 A) on primary side
(3) Life of relay in case (B) ass'y (circuit board
ass'y) ended.
(1) Poor contact of terminal
(2) Faulty battery (broken)
(3) Faulty case (B) ass'y (circuit board ass'y)
Typical cause
Refer to trouble mode (A).
Checking procedure
Refer to trouble mode (B).
NO
NO
NO
NO
YES
YES
YES
YES
The charge time lamp and the
charge status lamp fail to light.
Is there continuity
between the blades of the
AC cord plug?
Is there a
break in the AC
cord?
Is the fuse
on the primary
side blown?
Is the
varistor damaged?
(It is damaged if the
resistance is 100
Ω
or less between
the internal wires of
the varistor.)
Replace case (B) ass'y.
Replace the varistor and the
fuse on the primary side.
Faulty internal circuit
Replace case (B) ass'y.
Replace the AC cord.
Varistor damaged by incorrect
connection of high voltage
power supply.
Faulty internal circuit
Check with tester.
About 500 K
Ω
10-2. Troubleshooting and Repair Procedures
(1) Trouble mode (A)
Summary of Contents for UC 24YJ
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