Hitachi UC 10SL2 Service Manual page 7

(4) Trouble mode (D)
Pilot lamp remains flashing (on for 1
second, off for 0.5 second) after
battery has been connected.
Is ambient temperature within
designated range (between 0°C
YES
Is the battery very hot?
NO
Are connection terminals of
the charger or battery dirty or
deformed?
NO
Check with a tester.
Is resistance between the
"LS" and "-" terminals 2 k
to 100 k ?
YES
Faulty internal circuit
Replace the PCB.
and 40°C)?
NO
Conduct charging within
designated temperature range.
YES
Allow the battery to cool prior
to charging.
Charging cannot be done at battery
temperature above 55°C.
YES
Clean, or repair deformed terminals.
NO
-6-
0°C to 40°C
Replace the battery.