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


''Note: Model numbers were initially not synchronized across regions until the SCPH-550X series. E.g. the European launch consoles (SCPH-1002 series) mostly use the same board (PU-8) as most of the Japanese SCPH-3000 series consoles, since this was the current board revision at the time the PlayStation launched in Europe (very few exceptions where Sony used an older board in some very early units may or may not exist).''
''Note: Model numbers were initially not synchronized across regions. E.g. the european launch consoles (SCPH-1002 series) mostly use the same board (PU-8) as most of the japanese SCPH-3000 series consoles, since this was the current board revision at the time the PlayStation launched in europe (very few exceptions where sony used an older board in some very early units may or may not exist).''


== PlayStation motherboards ==
== PlayStation motherboards ==
=== PU-7 ===
=== PU-7 ===
[[File:17ns5BA.jpg|240px]] [[File:NQh911y.jpg|240px]]
<imgur w="240">17ns5BA.jpg</imgur> <imgur w="240">NQh911y.jpg</imgur>
* Year(s): September 1994 - early November 1995
* Year(s): 1994 - 1995
* Models: SCPH-1000, early SCPH-1001, very early SCPH-3000/SCPH-3500, probably few very early SCPH-1002
* 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)
* Has three potentiometers on board: RV701 (focus gain), RV704 (focus bias), RV705 (sled motor voltage)
*7-pin PSU
* 7-pin PSU
*Sub-revisions: 1-655-322-XX
* Sub-revisions: 1-655-322-XX
**-11  
** -11
***initial release
*** initial release
**-13
** -13
**-13A
** -13A
**-14
** -14
**-14A
** -14A
**-15
** -15
**-16


===PU-8===
=== PU-8 ===
[[File:l0g4NDE.jpg|240px]] [[File:2YjVOKt.jpg|240px]]
<imgur w="240">l0g4NDE.jpg</imgur> <imgur w="240">2YjVOKt.jpg</imgur>
*Year(s): late November 1995 - mid 1998
* Year(s): 1995 - 1996
*Models: SCPH-1001, SCPH-1002, SCPH-3000, SCPH-3500, SCPH-5000, SCPH-5003
* Models: SCPH-1001, SCPH-1002, SCPH-3000, SCPH-3500, SCPH-5000
*Removed S-Video interface
* Removed S-Video interface
*New CD DSP (CXD2510Q)
* New CD DSP (CXD2510Q)
*New CD decoder (CXD1815Q)
* New CD controller (CXD1815Q)
* Has three potentiometers on board: RV701 (focus gain), RV702 (push pull), RV704 (focus bias)
* Has three potentiometers on board: RV701 (focus gain), RV702 (push pull), RV704 (focus bias)
** Pads for RV705 (sled motor voltage) do exist but are unpopulated
** Pads for RV705 (sled motor voltage) do exist but are unpopulated
* 7-pin PSU
* 7-pin PSU
*Sub-revisions: 1-658-467-XX
* Sub-revisions: 1-658-467-XX
**-11
** -11
*** Mostly based on PU-7, but with several changes regarding the drive electronics
*** Mostly based on PU-7-15 with slight changes regarding the drive electronics
**-12
** -21
**-13 (seeind in DTL-H1102)
*** Actual larger changes
**
*** GPU now uses SGRAM for video memory
**
*** New SPU (CXD2925Q)
**-21
*** Smaller package for MechaCon
***Actual larger changes
** -22
***New [[GPU]] that uses SGRAM for video memory
** -23
***New SPU (CXD2925Q)
** -41
***Smaller package for MechaCon
**-22
**-23
**-41
***One single RAM IC instead of four
**-42
***One single RAM IC instead of four


===PU-9===
=== PU-16 ===
*Year(s):
* Year(s): 1996-1997
*Models: DTL-H1201 (and others?)
* Models: SCPH-5903
*7-pin PSU
* Only sold in Asia (without Japan)
* Not used in retail consoles
* Special version with daughter board for VideoCD decoding (MP-45)
*Further reading: https://strefapsx.pl/forum/psx-konsola/dtl-h1201-wczesny-debug-prasowy/
* Has circuitry for mixing output of the VideoCD board with output of the GPU
*Sub-revisions: 0-369-414-XX
* Mostly based on PU-8 (-21 and up)
** -02
* Has three potentiometers on board: RV701 (focus gain), RV702 (push pull), RV704 (focus bias)
 
===PU-16===
*Year(s): 1996-1997
*Models: SCPH-5903
* Only sold in Asia (except Japan)
*Special version with daughter board for VideoCD decoding (MP-45)
*Has circuitry for mixing output of the VideoCD board with output of the GPU
*Mostly based on PU-8 (-21 and up)
*Has three potentiometers on board: RV701 (focus gain), RV702 (push pull), RV704 (focus bias)
** Pads for RV705 (sled motor voltage) do exist but are unpopulated
** Pads for RV705 (sled motor voltage) do exist but are unpopulated
* 7-pin PSU
* 7-pin PSU
*Sub-revisions: 1-665-191-XX
* Sub-revisions: 1-665-191-XX
**-11
** -11


===PU-18===  
=== PU-18 ===
*Year(s): May 1997 - April 1998
* Year(s): 1996 - 1997
*Models: SCPH-550X, SCPH-5552, early SCPH-700X, early SCPH-750X
* Models: SCPH-5001, SCPH-550X, SCPH-5552, early SCPH-700X, early SCPH-7501
*Removed all audio/video connectors except the multi-A/V port
* Removed all audio/video connectors except the multi-A/V port
*Smaller form factor
* Smaller form factor
*New CD DSP (CXD2545Q) that now includes the servo controller
* New CD DSP (CXD2545Q) that now includes the servo controller
*Automated focus adjustment
* Automated focus adjustment
*Has single potentiometer on board: RV703 (push-pull adjustment)
* Has single potentiometer on board: RV703 (push-pull adjustment)
**Pads for RV701 and RV702 do exist but are unpopulated
** Pads for RV701 and RV702 do exist but are unpopulated
*5-pin PSU
* 5-pin PSU
*Sub-revisions: 1-664-537-XX
* Sub-revisions: 1-664-537-XX ''-31, -41, -72, -82 have a single system RAM chip; -11, -21, -52, -62 have 4 system RAM chips''
**-11
** -11
** -21
** -21
**-31
** -31
**-41
** -41
**-52
** -52
**-62
** -62
** -72
** -72
**-82
** -82
*''-31, -41, -72, -82 have a single system RAM chip; -11, -21, -52, -62 have 4 system RAM chips''
 
===PU-20 ===
[[File:PU-20 Top.jpg|thumb|left|PU-20 Top]]
[[File:PU-20 Bottom.jpg|thumb|none|PU-20 Bottom]]
 


*Year(s): April 1998 - August 1998
=== PU-20 ===
*Models: SCPH-700X, SCPH-7503
* Year(s): 1997 - 1998
*Smaller form factor (identical to PU-18)
* Models: SCPH-700X
*CD DSP, CD decoder and CD decoder's RAM combined into single chip (CXD1817R)
* Smaller form factor (identical to PU-18)
*No components on bottom side anymore
* CD DSP, CD controller and CD controller's RAM combined into single chip (CXD1817R)
*Automated focus adjustment
* No components on bottom side anymore
*Has single potentiometer on board: RV703 (push-pull adjustment)
* Automated focus adjustment
**Pads for RV701 and RV702 do exist but are unpopulated
* Has single potentiometer on board: RV703 (push-pull adjustment)
*5-pin PSU
** Pads for RV701 and RV702 do exist but are unpopulated
* 5-pin PSU
* Sub-revisions: 1-668-413-XX
* Sub-revisions: 1-668-413-XX
**-12
** -12
**-22
** -22
***One system RAM chip instead of 4
*** One system RAM chip instead of 4
**-32
** -32
**-42
** -42
 
=== PU-22===
[[File:PU-22 Top.jpg|thumb|left|PU-22 Top]]
[[File:PU-22 Bottom.jpg|thumb|none|PU-22 Bottom]]
 
 
*Year(s): August 1998 - May 1999
* Models: SCPH-750X, SCPH-9903, early SCPH-900X (parallel port hidden behind case)
*Smaller form factor (smaller than PU-18/PU-20)
*SPU integrated with CD-DSP/decoder 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
*Sub-revisions: 1-671-858-XX
**-11
**-12
**-21
**-22
**-32
 
===PU-23===
[[File:SCPH-9002 Top.jpg|thumb|left|PU-23 Top]]
[[File:SCPH-9002 Bottom.jpg|thumb|none|PU-23 Bottom]]


=== 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
* Sub-revisions: 1-671-858-XX
** -11
** -12
** -21
** -22
** -32


*Year(s): May 1999 - August 2000
=== PU-23 ===
*Models: SCPH-900X
* Year(s): 1999 - 2000
* Models: SCPH-900X
* Removed the parallel port
* Removed the parallel port
*Smaller form factor (smaller than PU-22)
* Smaller form factor (smaller than PU-22)
*Fully automated CD drive adjustment
* Fully automated CD drive adjustment
*Has no potentiometers on board (values set automatically by drive electronics)
* Has no potentiometers on board (values set automatically by drive electronics)
*5-pin PSU
* 5-pin PSU
*Sub-revisions: 1-674-987-XX  
* Sub-revisions: 1-674-987-XX
**-11
** -11
**-21
** -21
**-31
** -31
** -41
** -41
***This sub-revision (and '''only''' this sub-revision) has a different footprint for SPU-RAM in a smaller package
** -51
**-51


== PlayStation One motherboards==
== PlayStation One motherboards ==
===PM-41===
=== PM-41 ===
[[File:NDpavzB.jpg|240px]] [[File:WjcJgEn.jpg|240px]]
<imgur w="240">NDpavzB.jpg</imgur> <imgur w="240">WjcJgEn.jpg</imgur>
*Year(s): June 2000 - December 2004
* Year(s): 2000 - 2006
*Models: SCPH-10X
* Models: SCPH-10X
* Removed the serial port
* Removed the serial port
*Fully automated CD drive adjustment
* Fully automated CD drive adjustment
*Has no potentiometers on board (values set automatically by drive electronics)
* Has no potentiometers on board (values set automatically by drive electronics)
*Sub-revisions: ''PCB Part No. formatting/prefix differs''
* Sub-revisions: ''PCB Part No. formatting/prefix differs''
**-11
** -11
**-21
** -21
**-31
** -31
**-41
** -41
**-51
** -51
**-61
** -61
***SGRAM integrated into single chip with GPU
*** SGRAM integrated into single chip with GPU
** -71
** -71
***Also known as PM-41 (2)
*** Also known as PM-41 (2)
***Slightly smaller
*** Slightly smaller
***Audio-RAM integrated into CD/SPU-chip (CXD2941R)
*** Audio-RAM integrated into CD/SPU-chip (CXD2941R)
**-82  
** -82
***Also known as PM-41 (2)
*** Also known as PM-41 (2)
***Different package/footprint for RAM (the exact same part that is used on PS2 from GH-022 to GH-035 as IOP-RAM)
*** Different package/footprint for RAM
***The very last PS1 motherboard, built around 2003-2004 (December 2004 at the latest, date code "4D") and sold until 2006
*** The very last PS1 motherboard, built around 2003-2004 (at least) and sold until 2006
[[File:JcOdWlX.jpg|240px]] [[File:K3QiJGZ.jpg|240px]]
<imgur w=240>JcOdWlX.jpg</imgur> <imgur w=240>K3QiJGZ.jpg</imgur>
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