Use the BLL-3 battery and the JBE-2 calibration unit to test charging. When you are charging totally empty battery, remember that start-up charging might take 2 minutes with ACP-9 charger and several minutes with ACP-7 charger.
During this time display is blank. If charger is not NMP approved type and supported by phone then the software doesn't start charging and display 'NOT CHARGING'.
Remove and reconnect battery and charger few times before you start to measure module. This check ensures if module fault really exists.
See the diagram Figure 11 next page.
8. Troubleshooting Technical Documentation
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