Download  Print this page

Confirmation After Reassembly; Troubleshooting Guide; Failure During Charging - Hitachi UC 9SF Techical Data And Service Manual

Hide thumbs

Advertisement

8-3. Confirmation after Reassembly

Upon completing reassembly, confirm the items below.
(1) Confirm the following after reassembly:
• Plug the AC-Adapter [7] into the AC power outlet.
Use a tester to confirm that the voltage on terminal (A) is within the specified range below.
Model
UC 9SF
UC 12SF
UC 14SF
UC 18SF
In Adaptors UC 9SF and UC 12SF, the
• Connect the battery to the charger for charging.
Make sure the Battery Set lamp lights.
(2) Measure the insulation resistance and conduct a dielectric strength test.
Insulation Resistance: 10 megohms or more between the plug blade of the cord and the
nameplate or fastening screws on the case as measured with a DC 500 V megohm tester
Dielectric strength test:
(a) Between the plug blade of the cord and the charging terminal blade
(b) Between the plug blade of the cord and the nameplate or fastening screws on the case
The dielectric strength test should be conducted at the following voltage:
Voltage on the nameplate
230 V
CAUTION: Insulation resistance must be measured between the plug blade and the
nameplate or fastening screws on the case; the dielectric strength test must
be conducted between the plug blade and the charging terminal blade.
Under no circumstances should tests be conducted between both plug
blades or both charging terminal blades, which may cause the charger to
burn out.

9. TROUBLESHOOTING GUIDE

9-1. Failure During Charging

Failure
Terminal (A)
Check terminal
+ -
T
+ -
T
+ - -
+ - -
AC 3,750 V (for 1 minute)
The battery was inserted into the
adapter, but the Battery Set lamp
remains off.
The battery was inserted into the
adapter and the Battery Set lamp goes
on, but charging does not start.
Abnormal heat is generated.
Voltage range
(V)
16.6 to 20.7
20.7 to 25.6
22.6 to 28.0
28.1 to 34.2
terminal functions as a negative terminal - .
T
Test voltage
To Failure Mode (A)
To Failure Mode (B)
To Failure Mode (C)
-6-

Advertisement

loading

  Also See for Hitachi UC 9SF

This manual is also suitable for:

Uc 12sfUc 14sfUc 18sf