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Hello everyone, today will talk about the mainboards A1534, A1706 and A1708

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The A1534 is an ultra-low power laptop with a very small mainboard

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that takes up only about a quarter of the room inside the machine

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There is no fan inside it,

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so the sound of the fan can not be heard during operation,

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and the heat output is very small

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It uses an ultra-low power CPU

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Although the mainboard is small, it is well equipped

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On the back of the CPU, inside the shield is the memory chip

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This is empty

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And this is an EC

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This is a Wifi/ Bluetooth module

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Inside the shield, there's a master chip for the hard drive.

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It's a double layered chip

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Then this is the solid state drive, SSD

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This is also an SSD, one for the front and one for the back

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There's a memory chip next to it, for the camera chip

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On the back of this Wifi/ Bluetooth module,

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there's an antenna switch, and next to it is the antenna socket

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This is a power chip over here,

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and these CPU power chips and so on

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This is the CPU power chip,

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and these are all power chips

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These power chips control multiple PWM circuits

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The components on this mainboard are very dense

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This is the screen port

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There is a seat here for online BIOS brushing

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The BIOS chip is here, in a BGA package

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Here are some chips that supply 5 V to the interface, the chips that talk to Type-C

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The model uses a Type-C interface

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This is the battery port

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Let's take a look at the mainboard A1706

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It is equipped with hard drives inside these shields,

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and the hard drives are controlled here, connected to this seat

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There is a buckle to fasten on it and tighten it

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If the buckle is loose, the hard disk cannot be read

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The latch has to be on so it can communicate with the CPU

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It doesn't have a T2 chip

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So this must be the processor,

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and inside the shield next to the processor is the memory chip

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On this side is a Wifi/ Bluetooth module with a socket for a Wifi antenna next to it

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Here is a chip that manages the Type-C interface,

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also known as the Lightning chip, and here is another Lightning chip

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There's a CD3215 on the side,

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and there's a CD3215 on the back

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Same thing over here, heads, tails

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The four CD3215 chips have a white label attached to them

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If it turns red, like this one, that means it has water ingress

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This is the screen line, the line that connects the screen

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This is a battery port

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There are only positive and negative outputs

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There's a little wire on the battery that connects to the seat

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If this small wire is not plugged in, the battery is not discharged,

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and the battery voltage can not be measured on the mainboard

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Its CPU power supply circuit is DRMOS power supply circuit,

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there is no upper and lower tube

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This is the main chip that powers the CPU

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Where is the EC?

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Here is the EC

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This is the mainboard A1708

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The A1708 mainboard is also powered by an Intel Core processor

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It has a feature, this slot is used for the SSD

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Next to it is the Type-C interface

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There are only two Type-C interfaces on this machine

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The chip next to it is the Thunderbolt chip with the CD3215 on the back

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This is an EC,

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and this is the memory chip

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This is also a memory chip

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This is a CPU power chip

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Its screen line is right here

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Here is the Wifi/ Bluetooth module, it is welded to the top, is not pluggable

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The label turned red, indicates that the machine had been in the water

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Okay, this is the mainboard A1708