Battery tatus unknown!? Hi! I have 4 Sagem 922 with the same problem: “Battery unknown!” when turn on. Phones also don’t take charge. I changed charging controller, but nothing. Anybody knows how to repair this? IS NOT BATTERY CONTANTS PROBLEM!!! |
i have the same problem with 8 mw3026. can anybody advice som usefull information best regards |
I have no solution, but some time ago I have problem with outgoing calls with not good akku. Well, after add capacitor to the supply one (yellow under lcd - 477) phone write - "unknow battery" May be it help you. |
... Hi ! I got read of this problem by rewritting the eeprom on both m41/m51. But not allways this problem come from bad eep settings. best regards, .:hack3r2k:. |
Hey. Check the backside 4 baterey connector for baterey. All of them can fully touching surface. Also change baterey. Check your charger. Hopes it can help |
it is not the problem i checked the contacts battery and the charger. |
try by change P200 - 6pin's ic. |
if any have pictures for sagem board i send repear solution please send board pictures [email protected] |
Your mail is not working !!! ([email protected]) |
Battery status unknow... Hi2all The problem occurrence while phone can't read battery ID resistor... Possible cause is a: bad battery ID resistor (change batt!); bad wireing between batt connector and ASIC chip - for 9xx chip is SAGEM 18599662-5 ( check wires and resolder all connected components); bad ASIC chip ( change/resolder ASIC); Bad PCB - destroyed or some deformation(no solution!); :cool: |
Problem solved. (At Mx9xx. But i think at other models not big difference) Battery Pin-out: 1- +Vbatt 2- -Vbatt (Gnd) 3- Indicator battery type 4- At board must be closed to GND Beetwen pin 3 and 4 at battery set resistor. Resistance - battery type . I have two type - 7k5 and 13k. At board set capasitor. Pin 3 through fuse or resistor (0 ohm) (white or black smd near pin 3 ) go to the 21 pin interface IC (18599662-5). The resistence beetwen pin 3 and GND on board must been 150 - 2500 ohm. Chek all this values. And good luck. P.S. At my board resistence beetwen pin 3 and GND go to Mohms. And after change interface IC all problems solved. |
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