GSM-Forum - iPhone 6G 0.07-9A on DCPS

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oreal251

11-05-2018 05:01

iPhone 6G 0.07-9A on DCPS

Hello everyone!

Hi I have an issue with customer iPhone.

when I press the power button the phone stuck on 0.07-9A.

Before I had a vcc main short but I found the short and removed it.
After one day this issue appears.

What do you guys think?

I changed already Tristar ic, Tigris ic and Q1403

By the way, no short found.

Thank all that can help!

7Axis

11-05-2018 18:34

Where was the initial VCC_MAIN short at? check for voltage rails near that previous VCC_MAIN short and see if something is missing.

oreal251

11-09-2018 04:13

Quote:

Originally Posted by 7Axis (Post 13399586)

Where was the initial VCC_MAIN short at? check for voltage rails near that previous VCC_MAIN short and see if something is missing.

Hi,
Thank you!
Nothing is missing.

ninos22

11-09-2018 09:37

Quote:

Originally Posted by oreal251 (Post 13398257)

when I press the power button the phone stuck on 0.07-9A.

BATT_VCC ok?
VCC_MAIN ok?
TIGRIS output ok?

SDRAM 1.2v & 1.8v ok?
NAND 1.8v & 3.0v ok?

CPU 1.2 & SOC 0.95v fixed ok?

If all rails ok this looks like I2C short. Put DCPS 5.0v to reach 100-120mA and freeze board to find what is wrong.

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