Difference between revisions of "PCB Repair Logs Black Dragon"
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<caption class="summary" style=""><b>Black Dragon</b></caption> | <caption class="summary" style=""><b>Black Dragon</b></caption> | ||
<tr class="> | <tr class="> | ||
<td colspan="2" class="" style="text-align:center;">[[Image: | <td colspan="2" class="" style="text-align:center;">[[Image:black_tiger_marquee.png|200px]]</td> | ||
</tr> | |||
<tr class=""> | |||
<th scope="row" style="text-align:left; white-space: nowrap;">Manufacturer</th> | |||
<td class="" style="">[[PCB_Manufacturers_Capcom|Capcom]]</td> | |||
</tr> | |||
<tr class=""> | |||
<th scope="row" style="text-align:left; white-space: nowrap;">Year</th> | |||
<td class="" style="">1988</td> | |||
</tr> | </tr> | ||
<tr class=""> | <tr class=""> | ||
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<tr class=""> | <tr class=""> | ||
<th scope="row" style="text-align:left; white-space: nowrap;">Pin Out</th> | <th scope="row" style="text-align:left; white-space: nowrap;">Pin Out</th> | ||
<td class="" style=""> | <td class="" style="">[http://wiki.aussiearcade.com.au/index.php/File:Jamma_pinout.png Jamma Pinout]</td> | ||
</tr> | </tr> | ||
</table></p> | </table></p> | ||
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'''Repairer:''' [http://www.aussiearcade.com.au/member.php/1-Arcade-King Arcade King]<br> | '''Repairer:''' [http://www.aussiearcade.com.au/member.php/1-Arcade-King Arcade King]<br> | ||
'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/23513-Black-Dragon-Repair Black Dragon PCB Repair]<br> | '''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/23513-Black-Dragon-Repair Black Dragon PCB Repair]<br> | ||
<br> | |||
Brad's Original Black Dragon (Tiger) PCB | |||
PCB was missing 2 roms a 27512 @ 9B and 27256 @ 2N | |||
The rom at 2N is for all the in game foreground text and 9B is part of the background. | |||
First things first replaced the 2 missing roms. | |||
'''Problem:''' Foreground text is all messed up.<br> | |||
<br> | |||
<br> | |||
[[File:Pcb repair black dragon 1.jpg]] | |||
<br> | |||
<br> | |||
'''Fix:''' Pin 23 (A11) on rom 2N was stuck High. Tracked back to pin 2 of a 74ls253 @ 3N. Replacing the chip fixed the problem.<br> | |||
'''Problem:''' Character Graphics have faint horizontal lines through them.<br> | |||
<br> | |||
<br> | |||
[[File:Pcb repair black dragon 2.jpg]] | |||
<br> | |||
<br> | |||
'''Fix:''' Faulty 74ls253 @ 2K. Both chips were TI (Texas Instruments) branded IC's<br> | |||
<br><br> | |||
[[File:Pcb repair black dragon 3.jpg]] | |||
<br> | |||
<br> | <br> | ||
Board now 100% | |||
<br>[[PCB_Repair_Index|Back to PCB Repair Index]] | <br>[[PCB_Repair_Index|Back to PCB Repair Index]] | ||
Latest revision as of 08:33, 5 February 2013
Black Dragon
 |
|
| Manufacturer | Capcom |
|---|---|
| Year | 1988 |
| PCB Image | Reserved |
| Pin Out | Jamma Pinout |
Repairer: Arcade King
Forum Thread: Black Dragon PCB Repair
Brad's Original Black Dragon (Tiger) PCB
PCB was missing 2 roms a 27512 @ 9B and 27256 @ 2N
The rom at 2N is for all the in game foreground text and 9B is part of the background.
First things first replaced the 2 missing roms.
Problem: Foreground text is all messed up.
Fix: Pin 23 (A11) on rom 2N was stuck High. Tracked back to pin 2 of a 74ls253 @ 3N. Replacing the chip fixed the problem.
Problem: Character Graphics have faint horizontal lines through them.
Fix: Faulty 74ls253 @ 2K. Both chips were TI (Texas Instruments) branded IC's
Board now 100%
