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-   -   A500FU CMD Timeout Error (https://forum.gsmhosting.com/vbb/f672/a500fu-cmd-timeout-error-2332671/)

usernome 01-25-2018 12:29
A500FU CMD Timeout Error
 
1 Attachment(s)
What could be wrong ?
I tried with the power from the adapter , with the power from USB , with and without pull-up resistors .

usernome 01-25-2018 14:39
Code:
Compression is ON
Z3X EasyJtag Software ver. 2.9.0.0
Loading eMMC GEN1 Firmware... IO: 2800 mV
Box S/N: xxxxxxxxxxxx, ,FW Ver.: 01.62
CMD Pullup Level:3227 mV
CMD Active Level:2835 mV
Box IO Level:2800 mV
CLK Rate:14000 kHz
Bus Width:1bit,SDR
HiPower mode is off!
Can't init device, Reason: CMD Timeout Error
Done.
Another A500FU .

Tell me what to check , please !

kothamamun 01-25-2018 14:52
check connection properly

usernome 01-25-2018 14:54
I checked them under microscope .
2 boards with the same error .

blang 01-31-2018 14:51
Quote:
Originally Posted by usernome (Post 12925974)
I checked them under microscope .
2 boards with the same error .
provide details about problem - what the status of board.
status of emmc.
did you try remove emmc and check read/write in socket.

what you trying do with board.

vikboston 01-31-2018 15:06
Hi,

Please check connection properly.
I can see in log "CMD Pullup Level:3227 mV".
Looks like 3.3V soldered to 1.8V point.
Please, measure real voltage for 1.8 ISP point.

Best Regards

usernome 02-01-2018 14:56
Quote:
Originally Posted by blang (Post 12938222)
provide details about problem - what the status of board.
I have 3 boards dead after downgrade .
They can't be all with dead EMMC's .

usernome 02-01-2018 14:58
Quote:
Originally Posted by blang (Post 12938222)
status of emmc.
I don't know the status of EMMC's but , as I said , they can't be all dead .

usernome 02-01-2018 14:59
Quote:
Originally Posted by blang (Post 12938222)
did you try remove emmc and check read/write in socket.
That's the last solution ...

usernome 02-01-2018 15:00
Quote:
Originally Posted by vikboston (Post 12938258)
Hi,

Please check connection properly.
I can see in log "CMD Pullup Level:3227 mV".
Looks like 3.3V soldered to 1.8V point.
Please, measure real voltage for 1.8 ISP point.

Best Regards
I already said , I checked the connections several times and I have 3 boards .
I can't be wrong on all 3 .

alexid 02-02-2018 17:50
Quote:
Originally Posted by usernome (Post 12925626)
What could be wrong ?
I tried with the power from the adapter , with the power from USB , with and without pull-up resistors .
Check clk or cmd points.....

usernome 02-02-2018 19:11
Quote:
Originally Posted by alexid (Post 12943046)
Check clk or cmd points.....
I have 3 boards ... the same ...


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