iPhone Diode Mode Measurements – LogiWiki
Diode mode readings are essential for microsoldering because without schematics, there is no easy way to diagnose and repair these devices. LogiWiki solves that problem with a community-built reference database of known-good measurements.
What Are Diode Mode Readings?
When you probe a logic board in diode mode, your multimeter measures the forward voltage drop across each test point. By comparing your readings against known-good values from an identical board, you can quickly identify components that are shorted, open, or out of spec — without needing a full schematic.
Without a reference like LogiWiki, the only alternative is to buy a similar working board and take your own measurements to compare — time-consuming and expensive.
About LogiWiki
LogiWiki is built by repair technicians helping each other. It contains diode mode measurements for a wide range of iPhone, iPad, and MacBook boards, as well as Samsung devices — which are notoriously difficult to repair due to the scarcity of official schematics.
Much of the data that was previously only available inside ZXW Tools is now also documented in LogiWiki, making it a valuable free complement to paid schematic software.
Visit LogiWiki
Free, community-maintained diode mode reference for iPhone, iPad, MacBook, and Samsung.
Open LogiWiki →Using Diode Mode Effectively
Set your multimeter to diode mode and probe the test point you're investigating. Record the value, then compare it against the LogiWiki reference for that board. Significant deviations — especially readings near 0 (short to ground) or OL (open line) — indicate a fault in that part of the circuit.
Pair LogiWiki with ZXW Tools for the most complete picture: use ZXW to locate components on the bitmap, then use LogiWiki to verify expected diode mode values before and after a repair.