Talk:Switch boards: Difference between revisions

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m (old speculation removed, only one sentence was right... the misterious pin goes to syscon hidden in internal layers of the motherboard and probably all them shielded in between ground layers)
 
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== Pin 1 identification ==
All components whose pins needs to be marked in electronic equipment (because the component has several pins, like any chip/IC or connectors) always has a mark in pin 1... sometimes this mark is not visible because is "printed" under the component itself (so only visible before soldering the component to the board)... this seems to be the case in some of the connectors in PS3 power/eject boards, so the identification of pin 1 can be confusing


== PS3 2000 series Power Eject boards, enabling contour leds talk ==
As example... HSW-001 board has a "copper point" marked close to the connector... but this point is the ground pin of the capacitor placed below (the blue text in the first photo is wrong because this point is not related with the connector). So there is no way to identify pin1 by looking at HSW-001 board... the solution is to look at the connector in the other side of the ribbon cable (in other words... in the main motherboard)
<div style="float:right">[[File:Power Eject board PS3 2000 series (light rays schematic in contour leds).jpg|1000px|thumb|left|Power Eject board PS3 2000 series (light rays schematic in contour leds)]]<BR />[[File:Power Eject board HSW-001 (enabling contour leds).jpg|1000px|thumb|left|Power Eject board HSW-001 (enabling contour leds)]]</div>
This is a temporal section to discuss the simplest/easyer/safest/better way to make this mod, and the posible variations


The photos at the right are a first sketch to discuss how to improve the photos or the circuit, and are intented to replace the photos of this section in front page: http://www.ps3devwiki.com/wiki/Power_Eject_boards#Enabling_the_.22contour_leds.22_in_DSW-001_and_HSW-001_power_eject_boards
<gallery>
File:Power Eject board HSW-001 (Connector pin 1 detail).jpg|The blue text is wrong because this point is not related with the connector but this is actually pin 1 if you look at the motherboard and trace it along the ribbon cable
File:Power Eject board HSW-001 (JSD-001) schematic.jpg|But by looking at this photo of the motherboard is visible another point that is actually the pin 1 mark of the connector
</gallery>


*Light rays bouncing photo (this goes first because is easy to discuss)
==Non retail Switch boards==
**I could not find a better one where the first bouncing surface is more visible, this first surface is the most important but also the curve for the next bounces, is good to cover this with a mirror sticker (by sticking it in the case, this way the glue layer is at the other side)... no photo of this sticker
[[SW-13]], used in [[COOKIE-13]]
**Is barelly visible the light ray starts in verticall, and after the first bounce is in horizontal... arrows didnt helped
<gallery>
 
File:COKIE-13-33.jpg|COOKIE-13 ([[CSW-001]] [[SW-13]]_B)
*Circuit squematic photo
File:COKIE-13-32.jpg|COOKIE-13 ([[CSW-001]] [[SW-13]]_A)
 
</gallery>
The cutted trace in pin1 is just because the board was designed to be controlled this way, even if is not in retail models is possible that exist a prototype with it, also is needed to be 100% sure the pin goes nowhere (is posible the trace goes to an internal layer of the motherboard not visible in the surface and emerge again in a syscon pin)
 
The cutted trace in pin 3 to disable the 4 white leds for power eject buttons backlight is just a paranoid meassure to controll the total current of the board (you are adding 4 leds, so other 4 "needs" to be disabled)
 
The transistor base pin goes in-line with the other unpopulated transistor base pin, both does the same function at the same time, each transistor is in chargue of 2 leds with a common capacitor (the transistor opens/closes the leds ground lines, and when the line is opened the capacitor works as an "electricity buffer" creating a "fade out" effect while is discharguing). These transistors are "isolating" the subcircuit of the 4 leds
 
The unpopulated resistors values are dependant of the leds added, so no need to add the values to the drawing

Latest revision as of 04:39, 19 July 2017

Pin 1 identification[edit source]

All components whose pins needs to be marked in electronic equipment (because the component has several pins, like any chip/IC or connectors) always has a mark in pin 1... sometimes this mark is not visible because is "printed" under the component itself (so only visible before soldering the component to the board)... this seems to be the case in some of the connectors in PS3 power/eject boards, so the identification of pin 1 can be confusing

As example... HSW-001 board has a "copper point" marked close to the connector... but this point is the ground pin of the capacitor placed below (the blue text in the first photo is wrong because this point is not related with the connector). So there is no way to identify pin1 by looking at HSW-001 board... the solution is to look at the connector in the other side of the ribbon cable (in other words... in the main motherboard)

  • The blue text is wrong because this point is not related with the connector but this is actually pin 1 if you look at the motherboard and trace it along the ribbon cable

    The blue text is wrong because this point is not related with the connector but this is actually pin 1 if you look at the motherboard and trace it along the ribbon cable

  • But by looking at this photo of the motherboard is visible another point that is actually the pin 1 mark of the connector

    But by looking at this photo of the motherboard is visible another point that is actually the pin 1 mark of the connector

Non retail Switch boards[edit source]

SW-13, used in COOKIE-13

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