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iPhone camera circuit repairing

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This video mainly explains how to find the iPhone 12 Pro telephoto camera signals and measurement points

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Search methods step 1, find the telephoto camera connector in the 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 component map, circuit diagram, and bitmap of the iPhone12, 12Pro

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Find the camera connector in the component map

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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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Let's find the 1.8V power supply of the telephoto camera first

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Pin 5 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 FL10420,

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and is 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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Let's find the 24M clock signal from the camera power supply to the telephoto camera

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Pin 19 of the connector is the 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 R10402,

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and connected to the camera power supply U5300

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Next, let's look for the 3V power supply, AVDD2 power supply, 2.85V power supply,

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PVDD power supply and 1.2V power supply

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sent by the camera power supply and the camera power supply conversion tube

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Pins 27 and 28 of the connector are the PVDD power supply

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Jump to the bitmap according to the name,

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the PVDD power supply is connected to the fuse inductor FL10410,

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and connected to the camera power conversion tube U6300

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The power supply is also connected to the main power supply,

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which is used to identify whether the power supply is normal

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Pin 3 of the connector is the 3V power supply

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Jump to the bitmap according to the name,

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the 3V power supply is directly connected to the camera power supply U5300

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Pin 7 of the connector is the 2.85V power supply

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Jump to the bitmap according to the name,

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the 2.85V power supply is connected to the camera power supply conversion tube U5960

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Pin 9 of the connector is the AVDD2 power supply

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Jump to the bitmap according to the name,

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

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Pins 29 and 30 of the connector are the 1.2V power supply

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Jump to the bitmap according to the name,

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the 1.2V power supply is connected to the camera power supply conversion tube U5900

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Next, let's find the open signal from the camera power supply to the telephoto camera

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Pin 2 of the connector is the open signal

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Jump to the bitmap according to the name,

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the open signal is directly connected to the camera power supply U5300

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Let's find the LPDP data bus from the telephoto camera to the CPU

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Pins 10, 12, 16, 18, 22, and 24 of the connector are the LPDP data buses

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When the LPDP data bus transmits data,

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it will pass through the coupling capacitors, and then to the CPU

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Pin 10, LPDP bus, jump to the bitmap according to the name,

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the pin is connected to the coupling capacitor C10444

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And 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 C10445,

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and then connected to the CPU after passing through the capacitor

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Pin 16, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C10442,

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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 C10443,

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and then connected to the CPU after passing through the capacitor

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Pin 22, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C10440,

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and then connected to the CPU after passing through the capacitor

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Pin 24, jump to the bitmap according to the name,

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it is connected to the coupling capacitor C10441,

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and then connected to the CPU after passing through the capacitor

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Next, let's look for the LPDP bus detection signal from the CPU to the telephoto camera

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Pin 23 of the connector is the LPDP bus detection signal

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Jump to the bitmap according to the name,

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the detection signal is connected to the coupling capacitor C10446,

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and it is also directly 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