Understanding the Concept of Work PUSL (PowerUp System Logic)

When phone powered up / booting, PURX must have accurate voltage 1.8V

. We often found PURX voltage below 1.8V..,like 1.1 V, this is not caused by RETU ( EM 1 ) problem, but caused by Sleepx voltage from RAP is not accurate 1.8V. So we can assume that Sleepx may affet PURX.

So If you faces problem that PURX voltage is below 1.8V you need to check RAP IC so Sleepx have accurated voltage `1.8V.

Ok maybe enough for this time.., simple explanation about PUSL.

hopefully can help you for repairing mobilr phones analysis.

Understanding the Concept of Work PUSL (PowerUp System Logic)

By: Miftah Lutfi

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