Switch boards

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Description[edit]

The Switch board is a daughterboard where are located the input switches, and some leds for outputs and fireworks

  • Switch board components
    • Switches: Power and Eject buttons
    • Green and Red leds, all switch board models have them, are needed to show the standby/poweron modes and the infamous YLOD
    • Eject led, this is the only led not controlled by syscon, the line goes to the bluray controller, so is the bluray controller who decides when is lighted on
    • White backlight leds, this was added for PS3 slim models with the new case design and the new pressure buttons (not touch sensitive)
    • Unknown subcircuit leds, this seems some kind of experiment that escaped the prototyping table and entered retail production, for some reason exists in some retail PS3 but seems deactivated and partially unpopulated
    • IC, there are a couple of "chips" only in the first model of the switch board, probably related with the touch sensitive feature and maybe others


  • Switch board circuit overview (based on how HSW-001 works, this could be different for other switch board models)
    • When Power or Eject switches are pressed the correlating syscon pins are pulled down (grounded)
    • All LED's have its own resistor with a different value to control the current (thus light intensity) and one or more diodes to protect the circuit
    • The LED's on the switch board are turned on either by syscon (all them except one) or by the BD drive controller (only the eject blue led) by using an intermediary transistor
    • That transistors connects the LED ground pin to ground when the signal to turn them on is sent by syscon or by the BD drive controller (the other pin of the LED is connected permanently to the 5 volts standby line)

Comparison of functionality[edit]

PS3 retail switch boards
PS3 Switch board Switches Leds
PS3 Model Motherboard Model Part number Connector Power Eject Standby/PowerOn/YLOD Eject Switches Backlight Board Contour Backlight
CECHAxx
CECHBxx
COK-001 CSW-001 1-871-871-21 10 pins Touch sensitive Touch sensitive 1x red (2 pins)
1x green (2 pins)
1x blue No No
CECHCxx
CECHExx
COK-002
CECHGxx SEM-001 Integrated on motherboard Touch sensitive Touch sensitive 1x red (2 pins) ?
1x green (2 pins) ?
1x blue No No
CECHHxx DIA-001
CECHJxx
CECHKxx
DIA-002
CECHLxx
CECHMxx
CECHPxx
CECHQxx
VER-001
CECH-20xx DYN-001 DSW-001 1-880-056-11 10 pins Pressure Pressure 1x red/green (dual, 4 pins) 1x blue 2x white (power)
2x white (eject)
1x red (left-top). 1x blue (right-top)
1x blue (left-bottom). 1x unpopulated (right-bottom)
CECH-21xx SUR-001 HSW-001 1-881-946-11
1-881-946-21
10 pins Pressure Pressure 1x red/green (dual, 4 pins) 1x blue 2x white (power)
2x white (eject)
1x red (left-top). 1x unpopulated (right-top)
1x blue (left-bottom). 1x unpopulated (right-bottom)
CECH-25xx JTP-001
JSD-001
CECH-30xx KTE-001 KSW-001 1-884-751-31 6 pins Pressure Pressure 1x red/green (dual, 4 pins) No No No
SuperSlim MSX-001
MPX-001
NPX-001 ?
PPX-001 ?
PQX-001 ?
RTX-001 ?
MSW-001
PSW-001
RSW-001
1-886-929-11/21/31
1-888-628-21
1-893-506-11/31
6 pins Pressure No 1x red/green (dual, 4 pins) No No No
  • Notes
    • Switch board model naming seems to follow the first letter of the first motherboard that used that switch board + the letters SW (acronym of switch)
    • CSW=COK, DSW=DYN, KSW=KTE, MSW=MSX, PSW=PPX, RSW=RTX
    • The only exception is HSW-001 (because doesnt exists a retail motherboard model starting with H... this opens speculations because maybe there is a non-retail prototype unknown motherboard in between DYN-001 and SUR-001 with a name starting with H)

Flex Ribbon cables[edit]

Switch boards Pinout comparison[edit]

CSW-001[edit]

Switch board CSW-001 (PCB top view)

CSW-001 Pinout

Pin Signal/Connected to Description
On Motherboard On Switch board
1 GND GND GND
2 SW_PWM (SYSCON)  ? FREQ
3 RMC_IN (SYSCON)  ? NC
4 /POW_SW (SYSCON)  ? /POWER_SW
5 /EJECT_SW (SYSCON)  ? /EJECT_SW
6 POW_LED (SYSCON)  ? GREEN
7 STBY_LED (SYSCON)  ? RED
8 BD_LED  ? BLUE
9 GND GND GND
10 +5V_EVER  ? +5V

DSW-001[edit]

Switch board DSW-001 (PCB top view)

DSW-001 Pinout

Pin Signal/Connected to Description
On Motherboard On Switch board
1 Syscon SW2-30x, pin 13 Pogo Pin Only This line have pogo pin @ switchboard, seems that it is a service pin.
2 Syscon SW2-30x, pin 12 4x CONTOUR LEDs Not used by default.
On Switch board is connected to a transistor driving 3 LEDs TWO BLUE AND ONE RED.
3 Syscon SW2-30x, pin 11 2x WHITE LEDs, ground pins Inner LEDs for EJECT button backlight
2x WHITE LEDs, ground pins Inner LEDs for POWER button backlight
4 Syscon SW2-30x, pin 110 POWER switch PS3 power button Sink to ground to activate.
5 Syscon SW2-30x, pin 111 EJECT switch PS3 eject button Sink to ground to activate.
6 Syscon SW2-30x, pin 5 GREEN led Connects to bottom-left corner pin (green gnd) of dual red/green LED over power switch.
7 Syscon SW2-30x, pin 6 RED led Connects to top-left corner pin (red gnd) of dual red/green LED over power switch.
8 BD_Connector, pin 13 BLUE led Connects to blue LED over eject switch.
9 GND GND Ground
10 CN101 Power Supply, pin1 ? VCC +5V DC VCC
  • above top panel view port behind pcb. resistors was not tested.

HSW-001[edit]

Switch board HSW-001 (PCB top view)

HSW-001 Pinout

Pin Signal/Connected to Description
On Motherboard On Switch board
1 Syscon SW2-30x, pin 12 4x CONTOUR LEDs, transistor base pin The transistor is located in the switch board and drives 2 LEDs with currentlimitor resistors of 3K Ω (red led at left-top) and 820 Ω (blue led at left-bottom)
The circuit has unpopulated pads to add another transistor and another 2 LEDs for a total of 4 LEDs driven by a misterious syscon pin
2 CN101 Power Supply, pin1 VCC +5V Standby line from power supply connector CN101, the pin named 5V_EVER on motherboard and 5VSB on power supply
3 Syscon SW2-30x, pin 11 2x WHITE LEDs, ground pins Inner LEDs for EJECT button backlight, with a currentlimitor resistor of 910 Ω
2x WHITE LEDs, ground pins Inner LEDs for POWER button backlight, with a currentlimitor resistor of 1K Ω
4 GND GND Ground
5 Syscon SW2-30x, pin 111 EJECT switch PS3 eject button Sink to ground to activate
6 Syscon SW2-30x, pin 110 POWER switch PS3 power button Sink to ground to activate
7 Syscon SW2-30x, pin 5 GREEN LED, ground pin Connects to left-bottom corner pin (green gnd) of dual red/green LED located next to the power switch, with a currentlimitor resistor of 1K Ω
8 Syscon SW2-30x, pin 6 RED LED, ground pin Connects to left-top corner pin (red gnd) of dual red/green LED located next to the power switch, with a currentlimitor resistor of 1K2 Ω
9 BD controller CXD5131R-1, pin 36 (on SUR-001/JSD-001)
or
BD controller R8J32830FPV1, pin ?? (on JTP-001)
BLUE LED, ground pin Connects to blue LED located next to the eject switch, with a currentlimitor resistor of 560 Ω
10 GND GND Ground

KSW-001[edit]

Switch board KSW-001 (PCB top view)

KSW-001 Pinout

Pin Signal/Connected to Description
On Motherboard On Switch board
1 Syscon SW3-30x, pin ? EJECT switch Sink to ground to activate
2 VCC VCC +5V DC VCC
3 Syscon SW3-30x, pin ? POWER switch Sink to ground to activate
4 Syscon SW3-30x, pin ? RED led Connects to right-top corner pin (red gnd) of dual red/green LED over power switch,
5 Syscon SW3-30x, pin ? GREEN led Connects to top right corner pin (green gnd) of dual red/green LED over power switch,
6 GND GND Ground
  • above top panel view port behind pcb. resistors was not tested.

MSW-001[edit]

Switch board MSW-001 (PCB top view)
  • MSW-001 is a switch board compatible with PS3 models:
    •  ?

MSW-001 Pinout

Pin Signal/Connected to Description
On Motherboard On Switch board
1  ?  ?
2  ?  ?
3  ?  ?
4  ?  ?
5  ?  ?
6  ?  ?

PSW-001[edit]

  • PSW-001 is a switch board compatible with PS3 models:
    •  ?

PSW-001 pinout... is the same than MSW-001 ?

RSW-001[edit]

  • RSW-001 is a switch board compatible with PS3 models:
    •  ?

RSW-001 pinout... is the same than MSW-001 ?

Modding[edit]

Contour backlight in PS3 2000 Series boards[edit]

Switch board PS3 2000 series
Light rays schematic in contour leds

PS3 2000 series CECH-20xx (with Switch board DSW-001), CECH-21xx and CECH-25xx (with Switch board HSW-001) has been designed to have a lighted line all around the top edge of the Switch board

The plastic plate uses a "light reactive" material along the edge and in a squared hole in the corner allows the light to "transpass" it

The ligth rays "bounces" inside this material, and the first bouncing surface over the squared hole is a plane at 45 degrees angle. This first bounce aligns the light rays in paralell to the board, the next bounces happens all along the curved surface in horizontal

The reflection of this surfaces can be increased a bit with chrome stickers (or alluminium tape). The case has a plane border of 3,5mm x 17,7cm perfect to stick in it, this way the glue layer of the sticker is at the other side, but the case doesnt have the 45 degrees surface (it has a weird hole instead), you can use other colors for the sticker/s because the color is partially visible from outside (preferably lighter colors or one that matches your led/s color to enhance it)

For more detailed info about this boards see: DSW-001 and HSW-001 pages

PS3 CECH-20xx Switch board DSW-001. Tests PS3 CECH-25xx Switch board HSW-001. Enabled subcircuit with 2 leds (blue + red)