You still have problems on USB-C areas.
Check diode mode to ground on all LDO outputs of CD3215 chips.
Check diode mode to ground on all LDO outputs of CD3215 chips.
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A1990 820-010-41-A no power
- Thread starter hgoncalves
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hgoncalves
Active member
U3100:
PP1V1_UPC_XA_LDO_BMC = 0.535V
PP1V8_UPC_XA_LDOD = 0.496V
PP1V8_UPC_XA_LDOA = 0.538V
PP3V3_UPC_XA_LDO = 0.520V
U3200:
PP1V1_UPC_XB_LDO_BMC = 0.540V
PP1V8_UPC_XB_LDOD = 0.504V
PP1V8_UPC_XB_LDOA = 0.544V
PP3V3_UPC_XB_LDO = 0.521V
UB300:
PP1V1_UPC_TA_LDO_BMC = 0.529V
PP1V8_UPC_TA_LDOD = 0.0671V
I think that the short is here. Shall I remove UB300?
PP1V1_UPC_XA_LDO_BMC = 0.535V
PP1V8_UPC_XA_LDOD = 0.496V
PP1V8_UPC_XA_LDOA = 0.538V
PP3V3_UPC_XA_LDO = 0.520V
U3200:
PP1V1_UPC_XB_LDO_BMC = 0.540V
PP1V8_UPC_XB_LDOD = 0.504V
PP1V8_UPC_XB_LDOA = 0.544V
PP3V3_UPC_XB_LDO = 0.521V
UB300:
PP1V1_UPC_TA_LDO_BMC = 0.529V
PP1V8_UPC_TA_LDOD = 0.0671V
I think that the short is here. Shall I remove UB300?
1V8 LDOD is very low on UB300, change the chip.
Don't forget to check UB400 at the end too.
Don't forget to check UB400 at the end too.
hgoncalves
Active member
Sorry for the delay, but I had a flood in the store and this has been very difficult. I only replaced it today, and It turned out, it was the UB300 damaged.
It's working again.
Thanks!
It's working again.
Thanks!