Capcom CPS1 / CPS2 Games

[channelmaniac]

Fixed: CPS1: Magic Sword:
Symptom: Dead/music & sound on power up

CPS1 boards play music or sounds immediately upon power up if there is a problem with the main CPU or ROMs. Checked the ROMs - Replaced 2 bad EPROMs. Board would now boot but display no picture and would NOT play blind. This is usually a C board issue. A closer inspection of the C board revealed a gouged trace. Repaired the gouged trace on the C board to fix the game.

[channelmaniac]

Fixed: CPS1: SFII (Street Fighter II):
Symptom: Dead

The Audio subsystem ROMs, main CPU ROMs, and the graphics ROMs showed normal signals on their pins. Pulling one of the program ROMs did not result in any music playing. Swapped the A board for a known good one and received the audio that was missing. The C board was bad (The custom Capcom chip was resoldered to rule out broken surface mount solder connections) and the A board had audio problems. Swapped the C board out from another SFII that had a bad ROM board. Game would now play but had no audio. Repaired 2 cut traces and replaced 8 caps in the audio section to fix the missing audio problem.

[channelmaniac]

Fixed: Strider:
Symptom: Dead

Missing program ROM. Dead and no audio output to signify missing program ROM. Replaced 1 missing program ROM. Still dead. No video clock was getting to the C board. Replaced broken ferrite bead jumper at FB1 to fix the power issue. Had corrupt graphics and no sound. Resoldered custom IC on C board to fix the corrupt graphics.  Replaced 2 incorrect 1Mb EPROMs. (Had JEDEC and needed non-JEDEC) to fix the sound issue. Replaced 2 missing 16 Bit graphics EPROMs to finish the game.

[channelmaniac]

Fixed: Saturday Night Slam Masters
Symptom: Dead

This is one of the games that has a special C board with a battery backed encryption key on it. Battery was dead. "Phoenixed" the C board. This means it was resurrected from the dead by programming 2 new unencrypted program ROMs, removing the battery from the C board, cutting a ground trace to 2 pins on the custom Capcom C board chip, and tying those 2 pins to +5v.

Game was still dead. This one also has the special QSound board and it had a similar battery as the C board that was also dead. Phoenixed the Q-Sound board by burning a 27C040 EPROM with both the encrypted and unencrypted code and adding in a 4002 IC to bank switch the ROMs back & forth to pass the CPU encryption checks. Attempted to play the game but it worked fine - I really stink at this one.

[channelmaniac]

Fixed: Knights of the Round
Symptom: Dead

This is another Capcom game with a suicide battery on the C board. Removed the dead battery. Traces on the custom IC were already cut so I just needed to jumper 2 pins of the encryption chip to +5v then replace 1 EPROM with a new one that had suicide free code to finish out the repair / phoenix of this board.

[channelmaniac]

Fixed: CPS2: XMen Children of the Atom
Symptom: Dead

Board had suicided - the battery backing up the encrypted CPU had died. Phoenixed the board by erasing and reprogramming the 27C4096 EPROMs (Cust supplied) with phoenixed code (cust supplied.)

[channelmaniac]

Fixed: CPS2: Powered Gear
Sympom: Dead

Another Capcom game that has suicided. Removed the dead battery. Erased and reprogrammed the 27C4096 EPROMs (cust supplied) with phoenixed code (cust supplied).

[channelmaniac]

The CPS1 games take different types of EPROMs depending on the B board type and the jumper settings.

For 32pin 1Mb EPROMS:

If the silkscreen says 27C301 then it takes NON-JEDEC type 1Mb EPROMs.

If the silkscreen says 1M ROM then it could take either and if it says 27C1001 then it takes the JEDEC type 1Mb EPROMs (27C1001, 27C010, etc...)

For the 40 pin EPROMS/Mask ROMs:

Look at the silk screen... if it says 27C4096 then it's the JECEC style pinout. 27C4002, 27C4095, etc. will work.

If it says HN62404 then it is a totally different pinout. 27C400 EPROMs are what you need to replace these. (NOT 27C040 which are only 32pin 8 bit EPROMs)

Let's look at board jumpers on board 89624B.

Now you might have noticed some solder jumpers down towards the 7F and 8F board area. These jumpers (JP0 - JP1 and DJ0 - DJ1) allow you to change the EPROMs in sockets 28 - 31 and 33 - 36 from the JEDEC to non-JEDEC pinouts.

If the jumpers are set like this, then it is set up for a JEDEC style pinout EPROM.

Code:

PJ0
1  4
\xx/
x\/x

or 

PJ0
1  4
|xx|
|xx|

And if they are set like this, then it is set up for non JEDEC style EPROMs

Code:

PJ0
1  4
x/\x
/xx\

or

PJ0
1  4
x||x
x||x

DJ0 controls 28/33
DJ1 controls 29/34
PJ0 controls 30/35
PJ1 controls 31/36

VJ0 and VJ1 do the same thing for the Voice ROMs.

VJ0 controls 18
VJ1 controls 19

I haven't examined the jumpers at LJ3, LJ4, RJ3, or RJ4. They appear to control the A16 and OE* signals for the ROMs at 1-8, 10-17, and 20-27 but I haven't needed to pin them out yet.

Enjoy!

[channelmaniac]

Troubleshooting CPS 1 audio problems:

Turns out Capcom did the same stupid thing as SNK... The board is silkscreened for a Z80A and they put a cheaper, slower rated Z80 on it. That makes this component very suspect if you have audio problems.

However, that's not always the problem on the board.

Tools needed: Multimeter to check for bad traces and a logic probe (preferably one with audio) - bonus if you have an oscilloscope.

Symptom: No FM audio or no audio at all: (And no suicide battery on a QSound audio board)

First check the YM3012 DAC IC. If there is audio coming off of it check the analog part of the audio circuit. The audio part of the logic probe will help here. Look for bad op amps or capacitors. Check for a broken volume pot. If there's no audio coming off of the YM3012 DAC then check the digital portion of the audio circuitry.

To troubleshoot the digital section start by checking the EPROM in socket 9 - the Audio EPROM. Are there any signals on the data lines? No? Check the reset line on pin 26 as you power up the board. If it starts out low then flips to high (after a small pause) then the reset line is OK.

If the reset line is bad, trace it back and fix it.

Next check the clock line on pin 6 of the Z80. If it is bad, replace the 3.579 oscillator. If it is good, replace the CPU.

If the data lines and address lines show signals then check pins 2, 5, and 6 on the YM2151. These are the IRQ*, RD*, and WR* signals. If they are stuck high or low then replace the CPU.

If replacing the CPU at this point doesn't solve the issue try replacing the SRAM IC. (2k x 8 - a 6116 SRAM IC can be used to replace it)

If there is activity on those lines of the YM2151 then check pin 21 of it. It will have a steady pulse if no audio is coming out (Serial Data out). When audio is coming out there will be a series of scratchy pulses on it - this is more evident if your logic probe has audio. If there is no audio pulses coming out on pin 21 then replace the YM2151.

Your FM audio should now be working.

The non-FM sound effects (voice, punching, and other sounds) are simply controlled by the OKI M6295 IC. Check EPROMs 18 and 19 as the digital code for the sound effects is stored there. Repair any bad traces or replace any bad EPROMs. Double check to make sure the jumpers for the EPROMs are set correctly for the EPROM type used. (There's another post in this thread on how to set the jumpers)

[channelmaniac]

OK,

I've pinned out one of the connectors far enough to use in troubleshooting audio.

Enjoy!

RJ

Code:

CN1 (Sound)

A1 - VCC
B1 - GND
A2 - VCC
B2 - GND
A3 - VCC
B3 - GND
A4 - EPROM 9 CE*
B4 - A16           -------
A5 - A15             ^
B5 - A14             |
A6 - A13             |
B6 - A12
A7 - A11
B7 - A10
A8 - A9
B8 - A8
A9 - A7
B9 - A6
A10 - A5          Z80 to EPROM 9
B10 - A4
A11 - A3
B11 - A2
A12 - A1
B12 - A0
A13 - D7
B13 - D6
A14 - D5
B14 - D4
A15 - D3             |
B15 - D2             |
A16 - D1             |
B16 - D0          -------
A17 - EPROM 18 CE*	Pin 35 (OKI M6295)
B17 - EPROM 19 CE*	8E pin 6 (74LS04)
A18 - A16	Pin 34        -------
B18 - A15	Pin 33          ^
A19 - A14	Pin 32          |
B19 - A13	Pin 31          |
A20 - A12	Pin 30
B20 - A11	Pin 29
A21 - A10	Pin 28
B21 - A9	Pin 27
A22 - A8	Pin 26
B22 - A7	Pin 25
A23 - A6	Pin 24
B23 - A5	Pin 23
A24 - A4	Pin 22        OKI M6295 to EPROM 18/19
B24 - A3	Pin 21
A25 - A2	Pin 20
B25 - A1	Pin 19
A26 - A0	Pin 18
B26 - D7	Pin 16
A27 - D6	Pin 15
B27 - D5	Pin 14
A28 - D4	Pin 13
B28 - D3	Pin 12          |
A29 - D2	Pin 11          |
B29 - D1	Pin 10          |
A30 - D0	Pin 9         -------
B30 - NC
A31 - NC
B31 - NC
A32 - NC
B32 - NC

[channelmaniac]

Symptom: No audio
Board: CPS1 A Board

Data lines were active with random junk. Interrupt pin on sound IC was stuck at logic high. Replaced Z80 CPU with a proper Z80A CPU to fix board.

[channelmaniac]

Symptom: No audio
Board: CPS1 A Board

Data line D1 on EPROM 9 was pulsing at a very regular interval. Interrupt pin on sound IC was stuck at logic high. Replaced Z80 CPU with a proper Z80A CPU to fix board.

[channelmaniac]

Symptom: Very low audio
Board: CPS1 A Board

Board had VERY faint audio - only there if volume was cranked to full blast. Shorted across the volume pot and there was no increase in the volume - the volume pot was good. Tested the electrolytic capacitors in the pre-amp and audio amp circuits. Replaced 2 open 10uf capacitors and replaced 4 100uf, 1 47uf, and 1 4.7uf capacitors with high ESR readings to fix board.

[channelmaniac]

Here's another CPS1 A to B board connector pinned out.

Enjoy!

Code:

CN4 (Char ROM Data/Select?)

G1 - GND
H1 - GND
G2 - GND
H2 - GND
G3 - GND
H3 - 1A PIN 2      -------      PIN 98   -------
G4 - 1A PIN 3         ^         PIN 97      ^
H4 - 1A PIN 4         |         PIN 96      |
G5 - 1A PIN 5         |         PIN 95      |
H5 - 1A PIN 6      PAL16L8      PIN 94
G6 - 1A PIN 7      IC 1A        PIN 93
H6 - 1A PIN 8      B Board      PIN 92
G7 - 1A PIN 9         |         PIN 91
H7 - 1A PIN 11         |        PIN 90
G8 - 1A PIN 13         |        PIN 89
H8 - 1A PIN 15      -------     PIN 88
G9 - 1B PIN 5      -------      PIN 87
H9 - 1B PIN 4      74LS245      PIN 86   CPS-A-01
G10 - 1B PIN 3       B Board    PIN 85   DL-0311-1001
H10 - 1B PIN 2       -------    PIN 84   IC 2H
G11 - 1C PIN 2       -------    PIN 83   A Board
H11 - 1C PIN 3          ^       PIN 82
G12 - 1C PIN 4          |       PIN 80
H12 - 1C PIN 5       74LS245    PIN 79
G13 - 1C PIN 6       B Board    PIN 78
H13 - 1C PIN 7          |       PIN 77
G14 - 1C PIN 8          |       PIN 76
H14 - 1C PIN 9       -------    PIN 75
G15 - NC                        PIN 74      |
H15 - NC                        PIN 73      |
G16 - NC                        PIN 72      |
H16 - NC                        PIN 71   -------
G17 - PIN 119       C Board      PIN 5 IC 8F A Board
H17 - 8E PIN 8        74LS08      JAMMA PIN P (Video Sync)
G18 - GND 
H18 - GND 
G19 - GND 
H19 - PIN 104       -------      PIN 11 IC 4C A Board
G20 - PIN 102          ^         R/W*   -------
H20 - PIN 101          |         OE*      ^
G21 - PIN 100          |         A11      |
H21 - PIN 99                     A10      |
G22 - PIN 98       Custom        A9   MB81C78A
H22 - PIN 97       Capcom        A8   IC 1C & 3C
G23 - PIN 96       IC            A7   A Board
H23 - PIN 95       C Board       A6   (Color SRAM?)
G24 - PIN 94                     A5
H24 - PIN 93                     A4
G25 - PIN 92          |          A3      |
H25 - PIN 91          |          A2      |
G26 - PIN 90          |          A1      |
H26 - PIN 89       -------       A0   -------
G27 - VCC 
H27 - VCC
G28 - VCC
H28 - VCC
G29 - VCC
H29 - VCC
G30 - Pin 108      C Board      PIN 6 IC 1F A Board (Video Clk?)
H30 - VCC
G31 - VCC
H31 - VCC
G32 - VCC
H32 - VCC

[channelmaniac]

Model: Street Fighter 2
Symptom: Dead

Game would not give anything on the screen.

Replaced a broken ferrite filter on the B board and tested. This one supplied the video clock to the C board.

[channelmaniac]

Model: Street Fighter 2 Rainbow Edition
Symptom: Garbled music and sound effects

CN1 Pin A17 on the B board was not making contact. This was the CE* line on one of the sound ROMs. Replaced broken socket connector with one from Pin A32, an unused pin on the connector.

[channelmaniac]

Model: Knights of the Round
Symptom: Black screen, junk sprites.

The 3.6v battery on the C board read 2.9v. The board had suicided. Cut ground traces on pins 44/45 of the custom Capcom chip on the C board. Jumpered those pins to +5v. Erased and reprogrammed IC 23U with phoenix code. Tested the game.

[channelmaniac]

Model: Dungeons & Dragons: Tower of Doom
Symptom: Dead

This game was a CPS-2 game. Tested the battery on the ROM board. It was dead and the board had suicided. Erased ROM 3, 4, 5, and 7 then reprogrammed them with customer supplied suicide free code.

[channelmaniac]

Model: Street Fighter II, Champion Edition
Symptom: No Sync and no audio

Board had been worked on before. An attempt was made at replacing the Z80A CPU.

Replaced a burnt 220 ohm surface mount resistor on the A board and a 74LS00 at location 3F on the B board to fix the sync problem. Removed the Z80 CPU and checked the traces. Socketed the Z80A chip and repaired three bad traces. Tested game.

[channelmaniac]

Model: Saturday Night Slam Masters
Symptom: Dead

Removed battery, cut 2 traces, and added one jumper to the C board. Replaced ROM 23 with the Phoenixed version of code.

Removed R33 and C12 then jumpered across C12 on the Qsound board. Cut the jumper between pins 30 and 31 on the sound EPROM. Added a jumper from pin 27 of the Kabuki CPU to pin 31 on the sound EPROM.

Cut the jumper between Pins 31 and 32 of the sound EPROM. Added in a 4002 IC and jumper wires necessary to phoenix the sound board. Replaced the sound EPROM with the Phoenixed version of code and tested.

[channelmaniac]

Model: Warriors of Fate
Symptom: Dead

Removed battery, cut 2 traces, and added one jumper to the C board. Replaced ROM 23 with the Phoenixed version of code.

Removed R33 and C12 then jumpered across C12 on the Qsound board. Cut the jumper between pins 30 and 31 on the sound EPROM. Added a jumper from pin 27 of the Kabuki CPU to pin 31 on the sound EPROM. Replaced the sound EPROM with the Phoenixed version of code. Tested.

[channelmaniac]

Model: Captain Commando
Symptom: None. Game works but customer requested it be Phoenixed

Removed battery, cut 2 traces, and added one jumper to the C board. Replaced ROM 23 with the Phoenixed version of code and tested.

[channelmaniac]

Model: Mercs
Symptom: Missing background graphics

Cleaned pins on the 0224B PROM and tested.

[channelmaniac]

Model: Mercs
Symptom: Corrupt foreground and background graphics

Resoldered the C board chip and tested

[channelmaniac]

Model: Carrier Air Wave
Symptom: CPS error and graphics corruption

Patched a damaged trace on the C board to fix the CPS error message. Resoldered the custom graphics chip on the A board to fix the graphics corruption. Tested.