Motherboards

Overview

This list might be incomplete, so feel free to add your own board if you own one that is not in this list.

PlayStation motherboards

PU-7

• Year(s): 1994 - 1995
• Models: SCPH-1000, early SCPH-1001, very early SCPH-3000/SCPH-3500, probably few very early SCPH-1002
• Has three potentiometers on board: RV701 (focus gain), RV704 (focus bias), RV705 (sled motor voltage?)
• 7-pin PSU
• -13
  • initial release
• -13A
• -14
• -14A
• -15

PU-8

<imgur w="240">l0g4NDE.jpg</imgur> <imgur w="240">2YjVOKt.jpg</imgur>

• Year(s): 1995 - 1996
• Models: SCPH-1001, SCPH-1002, SCPH-3000, SCPH-3500, SCPH-5000
• Removed S-Video interface
• New CD DSP (CXD2510Q)
• New CD controller (CXD1815Q)
• Has three potentiometers on board: RV701 (focus gain), RV702 (push pull), RV704 (focus bias)
• 7-pin PSU
• -11
  • Mostly based on PU-7-15 with slight changes regarding the drive electronics
• -21
  • Actual larger changes
  • GPU now uses SGRAM for video memory
  • New SPU (CXD2925Q)
• -22
• -23
• -41

PU-16

• Year(s): 1996-1997
• Models: SCPH-5903
• Only sold in Asia (without Japan)
• Special version with daughter board for VideoCD decoding (MP-45)
• Mostly based on PU-8 (-21 and up)
• Has three potentiometers on board: RV701 (focus gain), RV702 (push pull), RV704 (focus bias)
• 7-pin PSU
• -11

PU-18

• Year(s): 1996 - 1997
• Models: SCPH-5001, SCPH-550X, SCPH-5552, early SCPH-700X, early SCPH-7501
• Removed all audio/video connectors except the multi-A/V port
• Smaller form factor
• New CD DSP (CXD2545Q) that now includes the servo controller
• Automated focus adjustment
• Has single potentiometer on board: RV703 (push-pull adjustment)
• 5-pin PSU
• -11
• -21
• -31
• -41
• -52
• -62
• -72
• -82

PU-20

• Year(s): 1997 - 1998
• Models: SCPH-700X
• Smaller form factor (identical to PU-18)
• CD DSP, CD controller and CD controller's RAM combined into single chip (CXD1817R)
• No components on bottom side anymore
• Automated focus adjustment
• Has single potentiometer on board: RV703 (push-pull adjustment)
• 5-pin PSU
• -12
• -22
  • One system RAM chip instead of 4
• -32
• -42

PU-22

• Year(s): 1998 - 1999
• Models: SCPH-750X, early SCPH-900X (parallel port hidden behind case)
• Smaller form factor (smaller than PU-18/PU-20)
• SPU integrated with CD-DSP/controller into single large chip (CXD2938Q)
• No dedicated audio-DAC anymore (SPU combo chip is outputting analog audio)
• Fully automated CD drive adjustment
• Has no potentiometers on board (values set automatically by drive electronics)
• 5-pin PSU
• -11
• -12
• -21
• -22
• -32

PU-23

• Year(s): 1999 - 2000
• Models: SCPH-900X
• Removed the parallel port
• Smaller form factor (smaller than PU-22)
• Fully automated CD drive adjustment
• Has no potentiometers on board (values set automatically by drive electronics)
• 5-pin PSU
• -11
• -21
• -31
• -41
• -51

PlayStation One motherboards

PM-41

<imgur w="240">NDpavzB.jpg</imgur> <imgur w="240">WjcJgEn.jpg</imgur>

• Year(s): 2000 - 2006
• Models: SCPH-10X
• Removed the serial port
• Fully automated CD drive adjustment
• Has no potentiometers on board (values set automatically by drive electronics)
• -11
• -21
• -31
• -41
• -51
• -61
  • SGRAM integrated into single chip with GPU
• -71
  • Also known as PM-41 (2)
  • Slightly smaller
  • Audio-RAM integrated into CD/SPU-chip (CXD2941R)
• -82
  • Also known as PM-41 (2)
  • Different package/footprint for RAM
  • The very last PS1 motherboard, built around 2003-2004 (at least) and sold until 2006

<imgur w=240>JcOdWlX.jpg</imgur> <imgur w=240>K3QiJGZ.jpg</imgur>