Hi., I am working on a Lenovo ThinkPad X13 Board # NM-C891. The unit is working fine but the battery does not charge & the laptop does not stay on with a charged battery, if I removed the Adapter cord it just turns off. I put in a new battery & when I turn on, it gives beeps & then laptop does not turn on at all. I checked the battery terminal (JDC1). The reading are as follow:
Pin 1-2 GND
Pin 3 NOT Connected
Pin 4 M_TEMP 2.2v which is very abnormal. This should change to low (GND) when good battery is attached. The volts on this pin never changes with or without the battery or the AC Power in or out.
Pin 5 DATA 3.3v
Pin 6 Clock 3.3v
7-8 Positive (No voltage at all)
M_TEMP signal is directly coming from UCE1A (MEC1663-WC_WFBGA144) .... Do you think this chip got defective. Is this chip programmable?? Can someone look into this. Thanks in advance
Pin 1-2 GND
Pin 3 NOT Connected
Pin 4 M_TEMP 2.2v which is very abnormal. This should change to low (GND) when good battery is attached. The volts on this pin never changes with or without the battery or the AC Power in or out.
Pin 5 DATA 3.3v
Pin 6 Clock 3.3v
7-8 Positive (No voltage at all)
M_TEMP signal is directly coming from UCE1A (MEC1663-WC_WFBGA144) .... Do you think this chip got defective. Is this chip programmable?? Can someone look into this. Thanks in advance
Comment