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820-00165
- Thread starter iFix
- Start date
So, no 3V3_S5 present?
What is the exact PPBUS_G3H voltage?
Check SMC_RESET_L and SMC_PM_G2_EN.
I recommend to reball SMC.
What is the exact PPBUS_G3H voltage?
Check SMC_RESET_L and SMC_PM_G2_EN.
I recommend to reball SMC.
Replaced SMC why?
Don't you want to check more things first?
Correct oscillation at Y5110?
Post its DC voltage, if no o-scope available.
Also post U7501 basic voltages; pins 23, 22, 12, 13, 29, 21.
Don't you want to check more things first?
Correct oscillation at Y5110?
Post its DC voltage, if no o-scope available.
Also post U7501 basic voltages; pins 23, 22, 12, 13, 29, 21.
PPBUS_G3H still 12.2V?
If yes, check voltage and diode mode to ground at SCL/SDA lines of battery bus.
If yes, check voltage and diode mode to ground at SCL/SDA lines of battery bus.
Yeah, my error about "12".
Check what I've said in this case.
Check what I've said in this case.
Diode mode on PPBUS_G3H looks good, don't be afraid.
And no reason to check battery voltage, if no present.
If SMC was already changed, try known good U7100.
And no reason to check battery voltage, if no present.
If SMC was already changed, try known good U7100.
3V at which coil?
Remove F7140 and check C7140 voltage.
Remove F7140 and check C7140 voltage.
So SMC doesn't control PPBUS_G3H correctly.
You must get 1-1.2V on both pins of Y5110.
Check adjacent traces, resistors and caps; change the crystal.
You must get 1-1.2V on both pins of Y5110.
Check adjacent traces, resistors and caps; change the crystal.
Post actual voltages for Y5110.