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 Post subject: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: December 22nd, 2019, 1:42 
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Joined: January 18th, 2010, 23:53
Posts: 186
Location: india
HDD: WD1600AAJS-22WAA0

when connecting this pcb with hdd or PCB only in MRT
I m getting like this, What will be the Problem

PCB: 2060-701552-003 Rev. A
Attachment:
2060-701552-003.jpg
2060-701552-003.jpg [ 229.23 KiB | Viewed 2282 times ]


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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: December 22nd, 2019, 22:49 
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Joined: January 18th, 2010, 23:53
Posts: 186
Location: india
i have no donor PCB.

how to trouble shoot this pcb.


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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: December 23rd, 2019, 18:41 
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Joined: November 3rd, 2013, 13:04
Posts: 266
Location: Hungary
Hi!
Maybe the controller, or one of zero ohm resistor is dead. Try "smart hot swap" method!


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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: December 23rd, 2019, 18:46 
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Joined: September 8th, 2009, 18:21
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Location: Australia
The MCU on this PCB is affected by "head mimic" faults.

If you wish to check the supply voltages, then measure Q1 (+3.3V), L1 (+1.2V) and the anode of D2 (-5V).

Note that the -5V rail may be switched on briefly and then switched off.

You might try installing the PM2 (PUIS) jumper. If the ROM supports this jumper, then the drive may come ready without trying to spin the motor.

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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: December 24th, 2019, 8:34 
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Joined: January 18th, 2010, 23:53
Posts: 186
Location: india
Attachment:
B-2060-701552-003.jpg
B-2060-701552-003.jpg [ 576.46 KiB | Viewed 2124 times ]


C18 Burned


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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: December 24th, 2019, 14:38 
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Location: Australia
So is the 1.2V Vcore supply missing?

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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: December 24th, 2019, 23:45 
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Joined: January 18th, 2010, 23:53
Posts: 186
Location: india
fzabkar wrote:
So is the 1.2V Vcore supply missing?


yes


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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: December 25th, 2019, 0:31 
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Joined: September 8th, 2009, 18:21
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Location: Australia
I'm assuming the capacitor is shorted, in which case you should try replacing it. I would choose a 10uF, 6V MLCC. You should be able to find a suitable replacement on a spare PCB.

https://au.mouser.com/Passive-Components/Capacitors/Ceramic-Capacitors/MLCCs-Multilayer-Ceramic-Capacitors/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT/_/N-bkrdv?P=1z0wrkrZ1yx4avtZ1yzmouc

You should check that Q2 is not shorted. To this end, measure the resistance between the +5V supply and L1.

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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: March 28th, 2020, 13:35 
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Joined: March 28th, 2020, 13:26
Posts: 4
Location: Germany
Hello,
i need help do identify this part:
i3cg.
I don´t find any part in i-Net.
My measurement says 30pF?
It this part only an capacitator?
D1 and D2
At the measurment point i dont get 1,2V! I check only 15mV


Attachments:
File comment: D1?
InkedBauteil_LI.jpg
InkedBauteil_LI.jpg [ 1.47 MiB | Viewed 1141 times ]
File comment: PCB
WD_PCB_Mark.jpg
WD_PCB_Mark.jpg [ 4.56 MiB | Viewed 1141 times ]
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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: March 28th, 2020, 13:52 
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Joined: October 3rd, 2005, 0:40
Posts: 3037
Location: Hungary
most probably a schottky diode (a designator of Dxx rarely if ever means a cap), something like 30V/1A should be ok there i think. But i am wondering if there are other problems on the board too. What values do you measure on those diodes in diode checking mode? (both directions)
pepe

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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: March 28th, 2020, 15:00 
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Joined: March 28th, 2020, 13:26
Posts: 4
Location: Germany
Thank for fast response ;)
i solder the item out ant take a multimeter and my fine MTester 2.07
I check both direction with the same result --> 35pF


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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: March 28th, 2020, 16:59 
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Joined: October 3rd, 2005, 0:40
Posts: 3037
Location: Hungary
we don't want to measure capacitance, test it as a diode, pls.
pepe

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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: March 28th, 2020, 17:09 
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Joined: October 21st, 2007, 8:48
Posts: 1439
I think that the PCB is OK and the problem is elsewhere.
What is your drive behavior?


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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: March 29th, 2020, 7:50 
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Joined: March 28th, 2020, 13:26
Posts: 4
Location: Germany
I have check the parts as diode.
0,155v in one direction
and no result in the another direction. So the power can only go ine one direction ;)

The HDD dont Spin on, makes no sound. Not detectable..


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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: March 29th, 2020, 8:57 
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Joined: October 21st, 2007, 8:48
Posts: 1439
Find a compatible PCB ( 2061-701499 ) replace and generate ROM from SA.


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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: March 29th, 2020, 11:28 
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Joined: August 15th, 2006, 3:01
Posts: 2874
Location: CDRLabs @ Chandigarh [ India ]
Well,
Someone has flashed the wrong rom and the pcb is now in a dead state ,It can be revived with a proper rom flash using com port interface " assuming its not bad electrically bad "

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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: March 30th, 2020, 5:35 
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Joined: March 28th, 2020, 13:26
Posts: 4
Location: Germany
Hello "unknown" ;)
What did it mean --> SA?
#
replace and generate ROM from SA.
#

i have ordered a compatible PCB in China and waiting for the item.
Than i must solder out an in the Chip 88i6745N
That is the difficult part :shock:

it is possible to read the chip an erase and program the other chip?
I have only tools to program SPI chips (like MX25V8006E)

best regards


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 Post subject: Re: WD PCB 2060-701552-003 REV. A -- Need Help
PostPosted: March 30th, 2020, 5:59 
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Joined: October 21st, 2007, 8:48
Posts: 1439
tstrempel wrote:
What did it mean --> SA?

System area.

tstrempel wrote:
i have ordered a compatible PCB in China and waiting for the item.
Than i must solder out an in the Chip 88i6745N
That is the difficult part

You will NOT need to solder out, but you will need a proper tools to generate ROM from system area as this PCB doesn't have an external U12.

Good luck


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