REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.

Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Wednesday 10 April 2019

APPLE MAC PRO – SPECIFICATION – DISASSEMBLING PROCEDURE

Apple Mac pro – Specification – Disassembling procedure

TECHNICAL SPECIFICATION
Quad-Core Intel Xeon E5 with 10 MB L3 cache and Turbo Boost up to 3.9 GHz
12 GB (three 4 GB modules) of 1866 MHz DDR3 ECC memory
Dual AMD FirePro D300 graphics processors with 2 GB of GDDR5 VRAM each
256 GB PCIe-based flash storage
802.11ac Wi-Fi wireless networking and Bluetooth 4.0 wireless technology
The back side contains the power button and electrical inlet, as well as a tidy array of ports:
3.5 mm speaker and headphone jacks
Four USB 3.0 ports
Six Thunderbolt 2 ports
Dual Gigabit Ethernet ports
HDMI 1.4 out
DISASSEMBLING PROCEDURE
With the cylindrical cover removed,get our first peek inside the Mac Pro.
The dual graphics cards dominate the initial view. Their symmetry is broken only by the SSD cage nestled up alongside the second graphics card.
Giving the Mac Pro a little spin, find neatly positioned vertical RAM slots at either side of the I/O panel
The RAM in the Mac Pro Late 2013 is easily accessible and replaceable.
The 4 GB DDR3L SDRAM (three for a total of 12 GB) modules are labeled as Elpida EBJ04EG8BFWB-JS-F.
According to Apple, the RAM in the Mac Pro is configurable to 16 GB (four 4 GB), 32 GB (four 8 GB) or 64 GB (four 16 GB)
With a twist of a T8 screwdriver, the SSD assembly is easily removed from the device.
For those playing along at home, have only removed one screw, and the SSD is out.
On board find some rather familiar friends:
Samsung S4LN053X01-8030 (ARM) Flash Controller
Samsung K9HFGY8S5C-XCK0 Flash Storage
Samsung K4P4G324EB 512 MB RAM
Regulatory markings have been relegated to the bottom cover/air inlet, find a few more informative tidbits:
The Mac Pro Late 2013 is identified as model A1481 with an EMC Number of 2630 and it's rated for 100-240 volts AC, making it a willing international travel partner.
There can only be one fan. The Mac Pro is vented by a single fan, which pulls air from under the case, through the core, and out the top of the case
Popped the plastic roof off the fan module and found a whole new stash of precision engineering.
Snug in a nest of antennas, the AirPort card fits onto a small adapter board that also connects to the fan below.
Those three large screws secure the fan, with vibration-dampening rubber bumpers, like in iMacs.
The AirPort card and find what looks to be the same configuration found in most Apple products today:
Broadcom BCM4360 5G Wi-Fi 3-stream 802.11ac gigabit transceiver
Broadcom BCM20702 single-chip Bluetooth 4.0 HCI solution with Bluetooth Low Energy (BLE) support
Skyworks SE5516 dual-band 802.11a/b/g/n/ac WLAN front-end modules

The gold antenna array pops out, and sees all.
With the fan released, it looks to be powered by a Nidec brushless DC motor, model number AG720K01.
The motor controller IC is an Allegro Microsystems A5940LPT Three Phase Sensorless Sinusoidal Fan Driver.
Noticed a few cavities around the edges of the impeller filled with some sort of epoxy (on both sides). it's for fine-tuned balancing, to keep the fan running smooth and quiet.
A view from above: The Mac Pro utilizes a giant triangular heat sink ("Thermal Core"), shared by the dual graphics cards and CPU.
Looks like the Mac Pro has taken some design pointers from the recent AirPort Extreme and Time Capsule bodies: a thin, vertical design with individual boards on separate sides.
Using spudger to pry the graphics card data connectors from their sockets. This FCI MegArray connector is the same type used for the G4 & G5 PowerPC processor daughtercards, and looks to be a fully custom way of hooking up PCI-E, with many pins in a pressed-in connector.
With the Mac Pro's structure dominated by the central heat sink, start by peeling parts off.
A clamp and four screws hold each of the dual AMD FirePro D300 graphics cards in place.
Amidst the usual processing power and cost comparison with a similar home-built desktop PC, these graphics cards may be the key to Apple finally undercutting homebrew systems on a pure power basis.
While this stacks up fairly well for current Apple GPU offerings, the proprietary nature, and lack of an elegant external GPU option, may age this device before its time.
The back side of each graphics card contains:
AMD FirePro D300 graphics processor
Elpida W2032BBBG 2 Gb (8 x 2 Gb = 16 Gb = 2 GB) GDDR5 VRAM
Intersil ISL 6336 6-Phase PWM Controller with Light Load Efficiency Enhancement and Current Monitoring
The front side has the following ICs:
Fairchild Semiconductor DD30AJ
International Rectifier IR3575 Synchronous Buck Gate Driver with integrated MOSFET and Schottky diode
Slightly different FirePro card.
This GPU same make and model hails from Taiwan, unlike its Chinese-made twin.
The other important difference to note is that this card (and only this card) hosts the slot for the SSD. This seems to us like a potential opportunity for expansion—perhaps higher storage configurations make use of two of this variety, for doubling up on SSDs.
A novel disc-shaped daughterboard ties everything together at the base of the machine. Having spudgered away the ribbon cables, flip it over for a closer look.
Dominated by inscrutable proprietary connectors, hope the ICs on this interconnect board will tell us more about its purpose.
The logic board, dual graphics cards, and I/O port board all connect to this single board.
Wrangling all that data requires a small posse of ICs.
Intel BD82C602J Platform Controller Hub
Renesas R4F2113NLG H8S/2113 16-Bit Microcontroller
ICS 932SQL435AL 3817528F
Texas Instruments LM393 Dual Differential Comparator
MXIC 25L6406E 64M-BIT CMOS Serial Flash
The back of the daughterboard features the same 980 YFC LM4FS1BH System Management Controller found in the Mid 2013 MacBook Air refreshes.
Pulling up a black cover grille, discover where Apple hid the power supply: it's sandwiched between the I/O panel and the logic board.
The power supply's connecting cables are cleverly conceived, but a bit tricky to remove. Our handy Torx driver is helpful here and with that, the I/O board and power supply peel away as a unit.
The logic board is the next logical step. The CPU is the last to go, left clinging to the side of the heat sink via a thin smear of thermal paste.
After teasing it away with a spudger, decipher its markings: Quad-Core Intel Xeon E5-1620 v2 with 10 MB L3 cache, clocked at 3.7 GHz, Turbo Boost up to 3.9 GHz.
The ICs on the rear of the logic board:
LGA 2011 (Socket R) CPU socket
Microchip EMC1428 8-Channel Temperature Sensor Monitor
International Rectifier IR3575 Synchronous Buck Gate Driver with integrated MOSFET and Schottky diode
NXP PA9517A Level Translating I2C-Bus Repeater
Texas Instruments 58872D
The front side of the logic board: Intersil ISL 6367 Hybrid Digital Dual PWM Controller
Port board,
Notable ICs on the back of the port board:
Broadcom BCM57762 Gigabit Ethernet Controller
Intel DSL5520 Thunderbolt 2 Controller
Fresco Logic FL1100 4-port USB 3.0 Host Controller
Parade PS8401A HDMI Jitter Cleaning Repeater
Delta 8904C-F
The front side of the port board: PLX Technology PEX8723 PCI Express Switch
Intel DSL5520 Thunderbolt 2 Controller Cirrus 4208-CRZ Audio Codec
Intersil 14AIRZ F335QV
Texas Instruments 58888D
Texas Instruments 58872D
Also along for the ride is a standard BR2032 CMOS battery
With a rated output of 12.1 Volts and 37.2 Amps, looking at a 450 Watt power supply. The power supply has no dedicated cooling, and relies on the main system fan to keep cool allowing the Mac Pro to idle at a whisper-quiet 12 dBA.
With the I/O panel cover up, spot one last trio of unidentified ICs, labeled as follows:
Two M430 V380 H 39K CX88 G4
One M430 V380 H 39K CX7S G4
Posted By: FRANK at 05:31
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