PSP Shutoff/Standby (no power button)

lcizzle · Post by **lcizzle** » Thu May 12, 2005 9:55 am

On top of the psp to the left and the right of the usb port are 2 screw holes
the holes have a flipper/button inside them if you press with with something and open the umd drive you can see the flipper extending to the pcb. I pressed my flippers in with a paperclip one side of the paperclip slipped in pretty far and the psp shutoff or went into standby
You think this is caused a short of some kind making it shutoff?

Post by **mrbrown** » Thu May 12, 2005 10:14 am

Are you telling us that you randomly started sticking objects inside your PSP while it was powered on?

If you want to break your PSP that badly can you give it to me instead?

Off-topic, moved.

sq377 · Post by **sq377** » Thu May 12, 2005 3:39 pm

Even if it is where you are suposed to plug in something, you would do it when it was off, then turn it on.

Guest · Post by **Guest** » Thu May 12, 2005 3:43 pm

My theory is that those holes are intended to allow USB devices to be "snapped" on top of the PSP, giving them a more solid attachment. Things like cameras, gps, etc...

Sticking anything inside is a bad move. You could really mess up your PSP that way.

Thanhda · Post by **Thanhda** » Thu May 12, 2005 3:48 pm

gorim wrote:My theory is that those holes are intended to allow USB devices to be "snapped" on top of the PSP, giving them a more solid attachment. Things like cameras, gps, etc...

Sticking anything inside is a bad move. You could really mess up your PSP that way.

thats not just a theory thats what its for. i have seen the camera attachment at pacific mall and it does in fact hold the camera from falling off.

Post by **mrbrown** » Thu May 12, 2005 6:45 pm

I bought a PSP face cover yesterday that screws into those holes and flips down over the front of the PSP. Apparently they can be used for anything.

Thanhda · Post by **Thanhda** » Fri May 13, 2005 3:54 pm

well none the less its to more or less screw hold what ever is attach on to the psp.

dsltech_dude · Post by **dsltech_dude** » Sun Jun 19, 2005 12:10 am

Aside from the screw holes, there are two little holes NEXT to the usb port. these are not for attaching anything, but possibly for expanding the variety of attachments(not EVERY device can use just usb). If you look down directly at them, they look gold. As a connector would...

Guest · Post by **Guest** » Sun Jun 19, 2005 1:24 am

Just about any device can use USB, because it costs next to nothing to attach a USB port to any device during manufacturing.

Having said that, one of those contacts is GND, the other is probably supplies voltage, for anything that needs more current than can be provided by the USB port.

dsltech_dude · Post by **dsltech_dude** » Sun Jun 19, 2005 1:28 am

Sorry, gorim.

That's what I meant for more power if needed, cause as 'wonderful' as USB is... it's not perfect.

DSLTech_Dude

wulf · Post by **wulf** » Sun Jun 19, 2005 2:11 am

when I was reading my manual for metal gear ac!d, it said they were "dc out"

sniepre · Post by **sniepre** » Fri Jun 24, 2005 9:43 pm

wulf wrote:when I was reading my manual for metal gear ac!d, it said they were "dc out"

They look like power terminals just from looking down at them, I'm going to guess this is right and they are a power jack for future perhiperals

Shine · Post by **Shine** » Fri Jun 24, 2005 11:30 pm

wulf wrote:when I was reading my manual for metal gear ac!d, it said they were "dc out"

This is possible. One connector is GND, as gorim already discovered. Looks like the other connector is connected to something on the circuit board, which looks like a step-up voltage converter, because there are the typical elements, like a big coil (big for SMD), capacitors and a small IC. There are another coil near the USB port, with the same IC (at least the same size), which may be used to generate the 5V for the USB port. Looks like both voltage outputs can be switched to tri-state by software. Any idea, which function I can use for it?

Guest · Post by **Guest** » Fri Jun 24, 2005 11:38 pm

Well, it was stated that the PSP's USB port is likely a slave. So, any peripheral attachment may need power going to it first, before it can even negotiate with the PSP. Just a guess...

Shine · Post by **Shine** » Sat Jun 25, 2005 12:05 am

gorim wrote:Well, it was stated that the PSP's USB port is likely a slave. So, any peripheral attachment may need power going to it first, before it can even negotiate with the PSP. Just a guess...

There is a camera for the PSP:

http://www.gadgetmadness.com/archives/2 ... essory.php

so I think the PSP USB port can be a master, too, because I don't think that it makes sense that the camera is the master and gets the power from the additional pins, only for feeding it back to a slave PSP USB port :-)

Guest · Post by **Guest** » Sat Jun 25, 2005 2:02 am

The idea isn't that the master feeds the power back to the psp.

The idea is that something must power the master to begin with, and the master can't get the power from the USB slave because the master must have some other source of power first just in order to function and communicate.

That, in theory, is where those extra power pins come in handy...

Shine · Post by **Shine** » Sat Jun 25, 2005 3:22 am

gorim wrote:The idea is that something must power the master to begin with, and the master can't get the power from the USB slave because the master must have some other source of power first just in order to function and communicate.

Maybe you are right. Looks like the Vbus signal is not connected, at least I couldn't measure any connection. I don't know much about USB, but perhaps the reason is that Sony wants to prevent, that a user plugs in a PSP, which is in master mode, into a PC.

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PSP Shutoff/Standby (no power button)

PSP Shutoff/Standby (no power button)

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