Hitachi UC 24YC Technical Data And Service Manual page 20

Charger
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(3) Trouble mode (C)
Pilot lamp remains green (red fails to light) after
battery has been connected.
Is ambient temperature
within designated range (between
0˚C and 40˚C) ?
battery very
Are the connection
terminals of the charger
or the battery dirty or
deformed ?
S, G, B, M and
H-type batteries: Is the
resistance between
( S ) and (---) terminals 2 KΩ to 100 KΩ ?
EB 7, EB 9 and EB 12 batteries:
Is there continuity between (T)
and (---) terminals?
Faulty internal circuits
Replace case (B) (PCB).
YES
Is the
hot ?
NO
NO
YES
NO
Conduct charging within
designated temperature range.
0˚C
YES
Allow battery to cool prior to
charging
For the S, G, B and M-types batteries, charging cannot
be accomplished if battery temperature is above 60˚C.
For H-type battery, charging cannot be accomplished if
battery temperature is above 45˚C.
For the EB 7, EB 9 and EB 12 batteries, charging cannot
be accomplished if battery temperature is above 40˚C.
YES
Clean, or repair deformed
terminals.
NO
Replace battery.
--- 18 ---
---
40˚C

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