Panasonic MC-BJ870-S149 Service Manual page 23

6.3. Inspected component/what to check/action based on the troubleshoot-
ing quick reference table
6.3.1. Diagnosis for charging components
6.3.1.1. Checking the charging adapter
■What to check/Method
<Check 1> Checking the charging adapter for deformity or damage
• Check whether there is any heat deformation, etc. in the main unit of the charging adapter.
• Check whether there is a burnout in the charging adapter cord due to damage or deformity, etc. of the insulation.
<Check 2> Checking the voltage of the charging adapter plug
• Plug the charging adapter into the power outlet (100 - 240V AC) and check the output voltage of the plug.
• Check whether there is a burnout in the charging adapter cord due to damage or deformity, etc. of the insulation.
Normal value: 24 to 26V DC (when open, no load)
■Action
• Replacing the charging adapter
6.3.2. Diagnosis for Lithium-ion battery
6.3.2.1. Checking the Lithium-ion battery
■What to check/Method
<Check 1> Checking the Lithium-ion battery for deformity or damage
• Check that there is no deformity, damage, or swelling of the battery.
• Check whether there is any damage to the connection terminals.
• Check whether there are any foreign bodies clinging to the connection terminals.
*A short circuit of a lead wire or connector terminal may cause a current fuse to blow.
<Check 2> Checking the voltage of the Lithium-ion battery
• Measure the voltage between the positive and negative terminals of the battery.
*If the battery voltage at the time of measurement is lower than the normal voltage, recharge the battery (for 3 hours: fully
charged) and then measure the voltage again.
Normal state: Approx. 21 to 26V DC (when open, no load)
• Check whether there is a short circuit or burnout between the negative battery terminal and the thermistor.
Normal state: Approx. 1.5k to 2.6kΩ (when temperature is 20 to 30ºC)
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