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iPhone camera circuit repairing

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This video mainly explains how to find the signals and measurement points

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of the iPhone 12 ProMax wide-angle camera

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Search methods step 1, find the camera connector in the iPhone 12 ProMax component map

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Step 2, determine the position number in the bitmap

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Step 3, search for the position number in the circuit diagram,

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and find the corresponding signals

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Step 4, according to the signals, jump to the bitmap to view the connected components

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The voltage and diode value can be measured at the position of the yellow point in the bitmap

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When checking the maps, first open the iPhone12Pro Max component map, circuit diagram, and bitmap

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Determine the wide-angle camera connector in the component map

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In the 12Pro Max component map,

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the wide-angle camera connector is the connector on the far right of the mainboard

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And determine the position number of the connector in the bitmap

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Then search for the position number in the circuit diagram

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After finding the camera connector, find the corresponding signals

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First look for the 1.8V power supply from camera power supply 1 to the wide-angle camera

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Pin 9 of the connector is the 1.8V power supply

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Jump to the bitmap according to the name,

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the 1.8V power supply is connected to the fuse inductor FL10201,

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and connected to the camera power supply U5300

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Next, find the I2C detection bus from the camera power supply to the telephoto camera

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Pins 15 and 17 of the connector are the I2C detection buses

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Pin 15, jump to the bitmap according to the signal name,

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it is directly connected to the camera power supply U5300

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Pin 17, jump to the bitmap according to the name,

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the signal is connected to the camera power supply

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Next, look for the 24M clock signal from the camera power supply 2 to the wide-angle camera

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Pin 11 of the connector is a 24M clock signal

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Jump to the bitmap according to the name,

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the clock signal is connected to the fuse resistor R10200 and then connected to the camera power supply 2 U5600

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Next, look for the AVDD2 power supply, 3.2V power supply,

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1.6V power supply and PVDD power supply

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sent by the camera power supply 1, camera power supply 2 and camera power supply conversion tube

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Pin 1 of the connector is the PVDD power supply

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Jump to the bitmap according to the name,

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it is connected to the fuse inductor FL 10200

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and connect to the camera power conversion tube U6250

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Pin 5 of the connector is the 3.2V power supply

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Jump to the bitmap according to the name,

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the 3.2V power supply is directly connected to the camera power supply 2,

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and there is no fuse in the middle

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Pins 19 and 21 of the connector are the 1.6V power supply

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Jump to the bitmap according to the name,

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it is connected to the fuse resistor R10230,

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and connected to the camera power supply after passing through the resistor

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Pin 2 of the connector is the AVDD2 power supply

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Jump to the bitmap according to the name,

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AVDD2 power supply is directly connected to the camera power supply U5300

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Let's find the open signal sent by camera power supply 1 to the wide-angle camera

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Pin 13 of the connector is the open signal

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Jump to the bitmap according to the name, the signal is connected to the camera power supply 1

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Let's find the LPDP data bus sent by the wide-angle camera to the CPU

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Pins 6, 8, 12, 14, 18, and 20 are the LPDP data buses

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When the data bus is connected to the CPU, it will pass through the coupling capacitors

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Pin 6, LPDP bus, jump to the bitmap according to the name,

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the pin is connected to the coupling capacitor C10211

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And connected to the CPU after passing through the capacitor

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Pin 8, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C10212,

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and then connected to the CPU after passing through the capacitor

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Pin 12, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C10209,

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and then connected to the CPU after passing through the capacitor

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Pin 14, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C10210,

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and then connected to the CPU after passing through the capacitor

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Pin 18, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C10207,

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and then connected to the CPU after passing through the capacitor

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Pin 20, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C10208,

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and then connected to the CPU after passing through the capacitor

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If one of the coupling capacitors is damaged or missing, the camera cannot be turned on

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That's all for this video