The new 21.5-inch iMac that Apple Corps added last week is a full upgrade compared to previous generations. Up to 4K resolution and wider color gamut display, equipped with faster and stronger processor and graphics card, also added two Thunderbolt 2 interfaces, foreign media evaluation, iMac is still the best one machine, not one . Let's explore the black technology in the 2015 21.5-inch iMac. (Source: ifixit, translation: 91 demolition)
The old rules, take a look at the new changes in 2015 21.5 inch iMac before dismantling:
Intel Core i5 Quad-Core 3.1GHz
8 GB 1867 MHz LPDDR3 memory (4 x 2 GB)
Intel Intel HD Graphics 6000 Graphics / Intel Iris Pro Graphics 6200 Graphics
1 TB (5400 rpm) hard drive, can also be configured up to 1 TB Fusion Drive or 256 GB Flash
Supports 802.11ac Wi-Fi Wireless + Bluetooth 4.0
The back of the new iMac comes with a headphone jack, SD card slot, four USB 3.0 ports and a network cable interface, and two new Thunderbolt 2 ports.
Use the iMac to disassemble the special tool and gently sew over the edge of the screen panel
It is very easy to open the screen panel, carefully found that the screen panel and the rear panel of the edge seam adhesive fixed.
New iMac This 4K resolution display is produced by LG OEM
Take away the metal baffle
Like previous generation iMacs, the display has its own set of control boards:
Red: Texas Instruments BUF16821 programmable gamma voltage generator
Orange: Richtek RT8250 Synchronous Buck Converter
Yellow: ST Microelectronics 404RP K516
Green: Winbond W25X20CL 2 MB Flash Memory Chip
Light Blue: Parade DP627HDE DisplayPort LCD Timer
Deep Blue: Texas Instruments TPS54231 Buck Converter
Purple: Texas Instruments TPS65161 bias power supply for TFT LCD panels
Remove the speaker, hard disk, and cooling fan from the rear panel, and you can find that the hard disk volume becomes smaller than the previous generation.
Remove the two screws, remove the metal clip that holds the antenna, and unplug the four antennas
Slowly pull the motherboard out of the rear case
Take a look at the front of this board:
Red: Intel SR26C Core i5-5250U processor clocked at 2.70 GHz with Intel HD Graphics 6000 Graphics
Orange: Samsung K4E6E304EE-EGCF 16GB LPDDR3 1867 MHz memory
Yellow: Broadcom BCM5776 Gigabit Ethernet Controller
Green: Texas Instruments LM4FS1EH SMC Controller
Light Blue: Adesto AT45DB021E 2 MB SPI Serial Flash
Dark blue: National Semiconductor 545AR6SU
Purple: Delta 8904C-F filter
And the back:
Red: Intel DSL5520 Thunderbolt 2 Controller
Orange: Cirrus Logic 4208-CRZ Audio Controller
Yellow: Macronix MX25L6473E 64 MB Multifunction I/O Flash Memory
Green: Vimicro VC0359 camera processor
Light blue: Intersil ISL62383CHRTZ power controller
Dark Blue: Intersil ISL95826
This is the Airport card on the new iMac
The entire 2015 21.5-inch iMac is disassembled and it is over. The maintenance difficulty given by the ifixit is 1 point (10 points for the easiest maintenance). To use the iMac's dedicated disassembly tool, you can separate the display and rear panel. Memory and CPU are soldered to the motherboard, and upgrading and replacement are difficult. The integration of the display increases the cost of maintenance.
More fresh hot disassemble video, please pay attention to micro signal: jiuyaochai