su600 dead boot how to connect ps_hold - GSM-Forum

umair.zego · 10-23-2011, 15:39

su600 dead boot how to connect ps_hold
i sold all wayers but i dont know to connect ps hold plsss help me thanks

rajeshchiyyan · 10-23-2011, 18:53

Try without PS Hold and post the result here

PS Hold is a test point that designed to keep CPU powered Up while supplying Battery power

(It's average is 3.6 to 4.2v )

umair.zego · 10-24-2011, 05:13

Quote:

Originally Posted by rajeshchiyyan

Try without PS Hold and post the result here

PS Hold is a test point that designed to keep CPU powered Up while supplying Battery power

(It's average is 3.6 to 4.2v )

ok bro how to give power to ps hold

rajeshchiyyan · 10-24-2011, 05:15

insert the usb cable and scan .. if any verf (vcc) error post the screenshot pls

umair.zego · 10-24-2011, 05:35

Quote:

Originally Posted by rajeshchiyyan

insert the usb cable and scan .. if any verf (vcc) error post the screenshot pls

wich ort tool need to use

umair.zego · 10-24-2011, 05:37

i use ort plus i get this error Unknown CPUID=0x00000000

rajeshchiyyan · 10-24-2011, 07:49

Quote:

Originally Posted by umair.zego

i use ort plus i get this error Unknown CPUID=0x00000000

check your connection again and post a screenshot please brother

umair.zego · 10-24-2011, 08:38

Quote:

Originally Posted by rajeshchiyyan

check your connection again and post a screenshot please brother

bro all connection ok but i thing ps hold connection is problem plsssssss explan how to connect ps hold bro thanks
wich tool need to use bro ort plus or ort tool

**Electroboys** · 10-24-2011, 16:30

Quote:

Originally Posted by Master Manual

What is PS_HOLD ?

The idea is If you can’t keep phone powered on PS_HOLD will do it for you
PS_HOLD is a Test Point that designed to keep cpu powered up while supplying a battery power .

Some Power Management IC’s are not able to hold dead handsets powered up and it affects operating while JTAGGing them that’s why they have PS_HOLD Points

It is required to make PS_HOLD Connection if it is exist on the pcb just to make sure everything will be stable while you are repairing the phone

There is another way to keep the phone up is : Keep pressing the power button !

How to use :

Dead Qualcomm handsets sometimes require PS_HOLD Connection on the board and purpose of this powering up the phone’s cpu by force

Basic connection is connecting PS_HOLD to VBAT with a resistor .

What is the Value of resistor that you should use :

Since VBAT Source differs on different phones which average is 3.6V to 4.2V
we should use something between 1K and 4.7K

The above message is been taken from Master Manual from support page..
Download master manual and take a look at it .

Best regards
Oz

SmartsMobiles · 10-25-2011, 09:21

Quote:

Originally Posted by Electroboys

The above message is been taken from Master Manual from support page..
Download master manual and take a look at it .

Best regards
Oz

So need to connect resistor (1k to 4.7k) between PS_HOLD TO Vref ?

[email protected] · 10-25-2011, 10:45

yes
we should use something between 1K and 4.7K !!!

10-23-2011, 15:39	#1 (permalink)
umair.zego Freak Poster Join Date: May 2010 Location: Sri lanka Posts: 230 Member: 1296033 Status: Offline Sonork: 100.1615063 Thanks Meter: 15	su600 dead boot how to connect ps_hold su600 dead boot how to connect ps_hold i sold all wayers but i dont know to connect ps hold plsss help me thanks

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10-23-2011, 18:53	#2 (permalink)
rajeshchiyyan Product Supporter Join Date: Jul 2010 Location: MobilesFactory,trichy,TN,India Age: 33 Posts: 1,523 Member: 1347585 Status: Offline Sonork: 100.1596390 Thanks Meter: 467	Try without PS Hold and post the result here PS Hold is a test point that designed to keep CPU powered Up while supplying Battery power (It's average is 3.6 to 4.2v )

10-24-2011, 05:15	#4 (permalink)
rajeshchiyyan Product Supporter Join Date: Jul 2010 Location: MobilesFactory,trichy,TN,India Age: 33 Posts: 1,523 Member: 1347585 Status: Offline Sonork: 100.1596390 Thanks Meter: 467	insert the usb cable and scan .. if any verf (vcc) error post the screenshot pls

10-24-2011, 05:37	#6 (permalink)
umair.zego Freak Poster Join Date: May 2010 Location: Sri lanka Posts: 230 Member: 1296033 Status: Offline Sonork: 100.1615063 Thanks Meter: 15	i use ort plus i get this error Unknown CPUID=0x00000000

10-25-2011, 10:45	#11 (permalink)
[email protected] Freak Poster Join Date: May 2010 Age: 35 Posts: 182 Member: 1300364 Status: Offline Thanks Meter: 23	yes we should use something between 1K and 4.7K !!!