Anyone have any idea what these additional components are on this SSD? It's a Samsung 470.
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| Dell MZ 5EA1000 - Unusual Components http://forum.hddguru.com/viewtopic.php?f=10&t=39318 |
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| Author: | ddrecovery [ January 3rd, 2020, 11:15 ] | |||
| Post subject: | Dell MZ 5EA1000 - Unusual Components | |||
Anyone have any idea what these additional components are on this SSD? It's a Samsung 470.
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| Author: | LarrySabo [ January 3rd, 2020, 11:53 ] |
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components |
My first thought was Peltier coolers but I don't think NANDs produce enough heat to justify them. Plus, heat transfer through the plastic wrap would be poor. Maybe they're heaters? I have no idea. |
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| Author: | ddrecovery [ January 3rd, 2020, 12:34 ] |
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components |
LarrySabo wrote: My first thought was Peltier coolers but I don't think NANDs produce enough heat to justify them. Plus, heat transfer through the plastic wrap would be poor. Maybe they're heaters? I have no idea. Thanks Larry. We may need Fzabkar's brain for this one..... |
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| Author: | fzabkar [ January 3rd, 2020, 14:49 ] |
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components |
As strange as it may seem, they appear to be battery packs. The clue is in the two 10-pin "BPT" chips (are there 4 of these?). TPS63000, Texas Instruments, High-Efficient Single Inductor Buck-Boost Converter With 1.8A Switches, 1.8V - 5.5V in, 1.2V - 5.5V out or fixed 3.3V, marking BPT, VSON-10: http://www.ti.com/lit/ds/symlink/tps63000.pdf Quote: The TPS6300x devices provide a power supply solution for products powered by either a two-cell or three-cell alkaline, NiCd or NiMH battery, or a one 1.2 V to 5.5 V cell Li-ion or Li-polymer battery. Output currents can go as high as 1200 mA while using a single-cell Li-ion or Li-polymer battery, and discharge it down to 2.5 V or lower. It would help to identify the other chips. There must be at least one battery charge controller, unless the batteries are simply trickle charged. I expect that there should be 4 MOSFETs, but I can only see 3. RSY160P05, Rohm, 4V Drive Pch MOSFET, -45V, +/-16A, TCPT: http://datasheet.elcodis.com/pdf2/98/50/985058/rsy160p05.pdf Edit: This review identifies them as ultra-capacitors for power failure protection: https://www.storagereview.com/samsung_ssd_sm825_enterprise_ssd_review |
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| Author: | ddrecovery [ January 3rd, 2020, 15:11 ] |
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components |
You are right they are battery packs. I was looking for chips and you can see underneath the battery cover there are four ++++ marks down the one side of the battery. These are sold as enterprise level drives, so I suspect the batteries are used to prevent data loss in some way. Well spotted. |
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| Author: | fzabkar [ January 3rd, 2020, 15:19 ] |
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components |
ddrecovery wrote: You are right they are battery packs. I was looking for chips and you can see underneath the battery cover there are four ++++ marks down the one side of the battery. These are sold as enterprise level drives, so I suspect the batteries are used to prevent data loss in some way. Well spotted. See my edit. Are they not supercapacitors? Batteries would be heavy. Also, supercapacitors would be charged to +5V, or perhaps +12V (according to the label). |
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| Author: | ddrecovery [ January 3rd, 2020, 15:31 ] |
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components |
They are indeed supercapacitors. Interesting article. |
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| Author: | suricate.ch [ March 11th, 2021, 10:40 ] | ||
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components | ||
Hello all, I got the same drive. Drive stay BSY. It was in a DELL server, running a VM. It doesn't look exactly like Samsung 470 from ACE Doc but very close. I believe safe mode should be in the area I've circle in red but not sure which one. Anyone had success with that drive in the past? Thanks Gab
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| Author: | fzabkar [ March 11th, 2021, 16:59 ] |
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components |
I'm wondering whether the procedure involves shorting the Ready/*Busy NAND pins to ground. |
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| Author: | suricate.ch [ March 11th, 2021, 17:10 ] |
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components |
CPU is S3C29MAX01-Y330. Very similar to 470 series, they have S3C29MAX01-Y340 |
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| Author: | fzabkar [ March 11th, 2021, 17:25 ] |
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components |
The R/*B pins require a pullup resistor, so that would be a likely place. The other end of the resistor would be connected to the NAND supply. You may also find that R/*B is bussed to several NANDs, so a continuity test would provide added confirmation. |
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| Author: | suricate.ch [ March 11th, 2021, 17:56 ] |
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components |
fzabkar wrote: I'm wondering whether the procedure involves shorting the Ready/*Busy NAND pins to ground. The NAND that are on the other side where Ultra-Capacirot are ? |
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| Author: | fzabkar [ March 11th, 2021, 21:14 ] | |||
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components | |||
See the ONFI BGA-136 ball definitions on page 24 of the following document: http://www.onfi.org/-/media/client/onfi/specs/jesd230c.pdf?la=en There are four R/B pins. These are open drain, so they can be wire-OR-ed and shorted to ground without risk of physical damage. The photo clip shows the 4 pullup resistors connected between each R/B ball and the Vccq I/O supply. You can short any of the R/B test points to ground, but you must not short the other side of the resistor. That would short circuit the Vccq supply. Without seeing your PC3K documentation, I can only assume that this is the correct procedure. I assume that these same test points are connected to more than one NAND IC. If not, then you will need to find the corresponding resistors on the other side of the PCB.
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| Author: | Agrail [ March 12th, 2021, 4:40 ] |
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components |
Safe mode is here. Attachment: 1.png [ 12.54 MiB | Viewed 17941 times ] See the documentation for the PC-3000. |
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| Author: | suricate.ch [ March 12th, 2021, 9:11 ] |
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components |
Agrail wrote: Safe mode is here. Attachment: 1.png See the documentation for the PC-3000. Thank you all. PC-3000 described those pin as safe mode access for 830 series so I didn't tried but you are right it's working. After identinfing pin 6 (always GND) I short pin 1 and 2 and SSD goes safe mode. I tried all 4 loader upload but it's always failing. ******************************************************* Selected family......................... : Samsung 470 series Controller.............................. : S3C29MAX01-Y340 Model................................... : Passport not loaded SSD status: SSD is in ready state................... : Yes SSD is locked........................... : No SSD is in Safe Mode..................... : Yes Loader uploaded......................... : No Logical access is possible.............. : No Physical access is possible............. : No Loader uploading **************************************** Code name............................... : 470A_LD.ldr Write HDD microcode SSD not ready (1) |
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| Author: | suricate.ch [ March 20th, 2021, 4:33 ] | ||
| Post subject: | Re: Dell MZ 5EA1000 - Unusual Components | ||
Ok, I've tried everything (all possible test point), no luck. I get safe mode but impossible to get into ROM mode. If someone had same drive, can you try?
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