Hitachi UC 10SL2 Service Manual page 5

(2) Trouble mode (B)
Pilot lamp indicates abnormality by
flashing rapidly at 0.1 second intervals.
Are connection terminals of
the charger or battery dirty or
NO
Is the battery connected in
Is the battery short-circuited
Faulty internal circuit
Replace the PCB.
deformed?
reverse?
NO
or opened?
NO
YES
Clean or repair deformed terminals.
YES
Install the battery in the correct
direction.
YES
Replace the battery.
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