PS1 SCPH-5002 - does it exist?

I think the anomaly is the SCPH-5001 - Japanese SCPH-5000 was a PU-8 (with RCA jacks) and the US SCPH-5001 was a PU-18 (without RCA jacks).

Japanese US Euro Asia Board
SCPH-1000 - - - PU-7
SCPH-3000 SCPH-1001 SCPH-1002 - PU-8
SCPH-3500 SCPH-1001 SCPH-1002 - PU-8
SCPH-5000 SCPH-1001 SCPH-1002 - PU-8
SCPH-5500 SCPH-5001/5501 SCPH-5502/5552 SCPH-5503 PU-18
SCPH-7000 SCPH-7001 SCPH-7002 SCPH-7003 PU-20
SCPH-7500 SCPH-7501 SCPH-7502 SCPH-7503 PU-22
SCPH-9000 SCPH-9001 SCPH-9002 SCPH-9003 PU-23

 

Actually I think there might be PU-7 SCPH-1001 and 1002s too.

 

I've heard people say that, but I've never actually seen it.

The earliest SCPH-1001 I've seen (which was apparently bought on the launch day) still had a PU-8, although it was the first version that had the VRAM, 40 pin boot ROM and 80 pin mechacon. Maybe there were some with PU-7s, but they certainly aren't common.

I have seen multiple SCPH-700x machines with PU-18s in them, though - which makes sense, because the primary change with that model number was that they were packed with the Dual Shock controller and the PU-18 and PU-20 have identical mountings.

 

PU-20 also had the video chip change. The difference between them is that the PU-18 uses CXA1645M,while PU-20 has the video chip the same as PU-22/23.

 

That's s difference between the PU-18 and the PU-20 - I was referring to the difference between the SCPH-550x sales package and the SCPH_700x sales package, which was that the 700x machines came with a dual shock controller. I think the PU18->PU-20 changeover was a bit later, since I have seen multiple SCPH-700x machines with PU-18s in them.

There are actually quite a few differences between the PU-18 and the PU-20:

Different video encoder (as you said)
Different clock generation using a single xtal and a frequency synthesizer chip
CD DSP, CD interface and work RAM chips merged into a single device
CD analog circuits simplified
DAC changed (same series, but a reduced spec version)
Memory changed from 4 chips to 1 (again - this was also done on some PU-8 boards, but reverted on PU-18)

 

Just curious,but do 700x PU-18 boards have the CXA1645M video encoder and older BIOS (should be 3.0 for 55xx machines IIRC)

 

Yeah, the PU-18s I've seen in 700x machines are identical to the ones in the 550x machines. My guess is that when they changed over to the dual shock as the standard controller they still had a lot of the parts for the PU-18 boards, so they used them up before switching to the PU-20. They are mechanically identical, so you could use exactly the same plastics with both PU-18 and PU-20.

The main reason I remember this was that when the SCPH-7000 came out we got some of them from Japan to find out what the changes on the new board were like - but when we took them apart, we found they had PU-18s in them. The ones with PU-20s started turning up a bit later.

The SCPH-7003 had PU-18s in it for quite a bit longer, so I guess they had a stock of boards left over.

 

They used that 1 chip memory device as the PS2 IOP RAM (hehe) until very late on the PS2 life cycle (it was phased out one major board revision before PS2 went "slim")

 

I assume the board revision is GH-026?

 

I think GH-023 also had the new RAM. Not sure, though. GH-023, 026 and 027 are the same "major" revision.

Just like GH-004 and GH-005 were the "B-Chassis", GH-006 and 007 were versions of the "C-Chassis".

On GH-004/005/006 and 007 case they called them B-Chassis, B-Chassis' (dash) and so on. The GH-008 was a PCMCIA-ish board using B-Chassis chipset (CPU, GPU and IOP) so they called it "AB-Chassis", etc etc ...

 

IIRC,I recall finding a aqua blue PS2 SCPH-50004, which had a 400C.
Weren't by that time PS2s v11 already? It had a GH-026 board.

 

"v11" doesn't exits. It's something invented by pirates.

SONY call them this way: (only "FATs" listed here)

A-Chassis: GH-001, GH-002(this one is very, very rare), GH-003
B-Chassis: GH-004, GH-005(SONY call this B' or b dash)
C-Chassis: GH-006, GH-007(SONY call this C')
AB-Chassis: GH-008, GH-009 (I've never seen one of these but they might exist)
D-Chassis: GH-010, 011, 012, 013, 014 and 016(I happen to own a GH-016)
F-Chassis: GH-015
G-Chassis: GH-017, GH-019, GH-022
H-Chassis: GH-023
I-Chassis: GH-026

These names can be seen on the front of some service manuals. (X-Type or X-Chassis)

 

what is the pcb layout in a vcd psx? the only photos i've seen make it look like it's some strange stacked board, that has no interface to the parallel port at all...

 

The board used in the SCPH-5903 is specific to that model (PU-16, I think) - the basic design follows the later PU-8 with SGRAM, but it has a connector for that sub-board to plug into and a different (and physically larger) boot ROM.

 

I found one guy listing the SCPH-5002 along with other SCPH's but he didn't want to ship outside of U.K and also ignored my question if he could take a pic. I doubt he would misspell the 5002.

 

I'm sure he did mispelled it. I found quite a few such offers on ebay and it always turned out that it was SCPH-5502 model.

SCPH-5002 does not exist. Period.

The same is with SCPH-5552 Men in Black edition which is mentioned on wikipedia. It also does not exist. This information is based on a picture of a custom made PS1 and not on an official Sony product.

 

But now I'm wondering, since the "5001" was listed. Why does it never appear on ebay? It was listed in an official manual. o: