CM4lite modul doesn't boot.

StereoPi v2 hardware questions
Post Reply
RainerMohrlok
Posts: 8
Joined: Thu Sep 15, 2022 5:32 pm

CM4lite modul doesn't boot.

Post by RainerMohrlok »

CM4lite modul doesn't boot.
It is orientated as shown in the manual and I felt the two "clicks" while mounting.
The "green" SD card is inserted. For testing everthing is removed except the USB-C power supply. (Power jumper is set)
Source Ind. LED shines red
Power ON LED shines red
The green LED nearby the Ethernet Connector shines red
But:
The Act LED remains dark as well as any other LED
A monitor connected to the HDMI connector before power up remains dark
So I think the CM4Lite modul doesn't boot.
Does anybody know what may be wrong? is the CM4Lite defect?

User avatar
Realizator
Site Admin
Posts: 884
Joined: Tue Apr 16, 2019 9:23 am
Contact:

Re: CM4lite modul doesn't boot.

Post by Realizator »

Hi RainerMohrlok,

Please check that RPIBOOT and USB_CLI jumpers are not installed.
Eugene a.k.a. Realizator

RainerMohrlok
Posts: 8
Joined: Thu Sep 15, 2022 5:32 pm

Re: CM4lite modul doesn't boot.

Post by RainerMohrlok »

They are not set.
Only the power jumper is set

RainerMohrlok
Posts: 8
Joined: Thu Sep 15, 2022 5:32 pm

Re: CM4lite modul doesn't boot.

Post by RainerMohrlok »

Two pictures
B.jpg
B.jpg (47.22 KiB) Viewed 1008 times
A.jpg
A.jpg (56.06 KiB) Viewed 1008 times

User avatar
Realizator
Site Admin
Posts: 884
Joined: Tue Apr 16, 2019 9:23 am
Contact:

Re: CM4lite modul doesn't boot.

Post by Realizator »

Your setup looks correct to me.

Is this state stays the same with both micro SD cards from the kit? Coud you please try to boot it with another card. This might be the micro SD imaging process issue (on the factory).
Eugene a.k.a. Realizator

RainerMohrlok
Posts: 8
Joined: Thu Sep 15, 2022 5:32 pm

Re: CM4lite modul doesn't boot.

Post by RainerMohrlok »

The problem persists with other cards as well
???

User avatar
Realizator
Site Admin
Posts: 884
Joined: Tue Apr 16, 2019 9:23 am
Contact:

Re: CM4lite modul doesn't boot.

Post by Realizator »

RainerMohrlok, I just try to exclude possible issues to understand the problem.

Since all StereoPi have been tested on the factory, I have two last ideas to check:
- micro SD casrd. The card can be damaged or OS image might be written wrongly. That's why I asked you to try the boot with another micro SD card and RaspiOS image on it
- CM4 issue. This is the issue if all other things are working.

If I send you CM4 replacement, and with the new CM4 item you'll have the same issue - it will be just a lost of your time. That's why I'm trying to check all possible reasons to replace exactly the thing causing your issue.

As I understand from your last reply, you've tried another card from the kit, and it doesn't work too. In this case I'd like to ask you to do the last test. Could you please:
- download SLP image from this link: https://www.mediafire.com/folder/nzr90vj8wp1l3/SLP
- image it to the card using Balena Etcher (but not just by copy it to the micro SD card)
- try to power up the device
Eugene a.k.a. Realizator

RainerMohrlok
Posts: 8
Joined: Thu Sep 15, 2022 5:32 pm

Re: CM4lite modul doesn't boot.

Post by RainerMohrlok »

the problem is that I tried several other cards which are booting on a standard Raspi 4.
And more important; For example the "green" card boots with a Raspi 4

RainerMohrlok
Posts: 8
Joined: Thu Sep 15, 2022 5:32 pm

Re: CM4lite modul doesn't boot.

Post by RainerMohrlok »

I checked the voltages on the CM4Lite, they are ok?
Is there something with the card reader?
Btw. while powering up the Act. LED flashes once for a couple of milliseconds

User avatar
Realizator
Site Admin
Posts: 884
Joined: Tue Apr 16, 2019 9:23 am
Contact:

Re: CM4lite modul doesn't boot.

Post by Realizator »

Uh, okay, thank you very much for the details!

I guess you have no other board compatible with CM4 to test your CM4 module, so let's conciderer our tests as finished.

Could you please write me an email to [my_nickname]@gmail.com, and I'll manage out the replacement delivery for you.
Eugene a.k.a. Realizator

RainerMohrlok
Posts: 8
Joined: Thu Sep 15, 2022 5:32 pm

Re: CM4lite modul doesn't boot.

Post by RainerMohrlok »

Sorry for late reply.
I checked the voltages with the scope. They look ok.
But nowhere I saw something like a tact signal?
I wrote you an email.

RainerMohrlok
Posts: 8
Joined: Thu Sep 15, 2022 5:32 pm

Re: CM4lite modul doesn't boot.

Post by RainerMohrlok »

With a new CM4Lite:
It works!!
How to change/repair the defekt CM4Lite?

User avatar
Realizator
Site Admin
Posts: 884
Joined: Tue Apr 16, 2019 9:23 am
Contact:

Re: CM4lite modul doesn't boot.

Post by Realizator »

Hi RainerMohrlok,

I'm glad you were able to localize the issue! I've answered your email - please take a look.
Eugene a.k.a. Realizator

Post Reply