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Based on the power supply wire coloring in the following document, I
performed tests on the power supply to verify the correct V-Dc and
V-Ac readings were present:
-(NOTE: After mapping the molex connector on the power supply against
the wire colors in the document, I noticed a few wire colors were
different.)
http://www.arcadedocs.com/vidmanuals/S/SpaceEncounters.pdf
The results I found when performing tests on my power supply using my
multimeter probes and using the correct color mappings are the
following (which were all the required voltages):
The V-Ac readings I received are as follows:
White/Green wire and Yellow/Black wire = 13.9V (which is ~12.0V)
Yellow wire and Black wire = ~16.5V-Ac
Yellow wire and Orange/Black = ~9.0V-Ac
Yellow wire and Red/White wire = ~9.0V-Ac
Yellow wire and Grey wire = ~16.5V-Ac
The V-Dc readings I received are as folllows:
Orange/Red wire and White wire = 5.0V-Dc
Orange/Red wire and White/Brown wire = ~12V-Dc **
Orange/Red wire and Black/Green wire = -5.0V-Dc **
Since this testing was performed I moved on to the monitor. I found a
missing 1.5Amp monitor fuse which seemed to explain why the monitor
tube never glowed. I put in the required fuse and the monitor tube
glows, however, the image displayed on the front of the monitor is a
just a solid whitish color. Messing with the contrast, brightness,
etc... did not change this at all.
Someone told me this might be due to a power supply problem not
produced the required 12V required. Anyway, I now decided to
re-verify my power supply board still was producing the 5V-Dc, 12V-Dc
and -5V-Dc. I noticed that I do get these voltages as long as the
wiring harness to the Main PCB "IS NOT" plugged into the Main PCB.
When the wiring harness to the Main PCB "IS" plugged into the Main
PCB, I get the following readings:
Orange/Red wire and White wire = 5.0V-Dc
Orange/Red wire and White/Brown wire = -56V-Dc <-- different value **
Orange/Red wire and Black/Green wire = -110V-Dc <-- different value **
Is this change in the 12V-Dc and -5V-Dc readings explainable?
Based on the power supply wire coloring in the following document, I
performed tests on the power supply to verify the correct V-Dc and
V-Ac readings were present:
-(NOTE: After mapping the molex connector on the power supply against
the wire colors in the document, I noticed a few wire colors were
different.)
http://www.arcadedocs.com/vidmanuals/S/SpaceEncounters.pdf
The results I found when performing tests on my power supply using my
multimeter probes and using the correct color mappings are the
following (which were all the required voltages):
The V-Ac readings I received are as follows:
White/Green wire and Yellow/Black wire = 13.9V (which is ~12.0V)
Yellow wire and Black wire = ~16.5V-Ac
Yellow wire and Orange/Black = ~9.0V-Ac
Yellow wire and Red/White wire = ~9.0V-Ac
Yellow wire and Grey wire = ~16.5V-Ac
The V-Dc readings I received are as folllows:
Orange/Red wire and White wire = 5.0V-Dc
Orange/Red wire and White/Brown wire = ~12V-Dc **
Orange/Red wire and Black/Green wire = -5.0V-Dc **
Since this testing was performed I moved on to the monitor. I found a
missing 1.5Amp monitor fuse which seemed to explain why the monitor
tube never glowed. I put in the required fuse and the monitor tube
glows, however, the image displayed on the front of the monitor is a
just a solid whitish color. Messing with the contrast, brightness,
etc... did not change this at all.
Someone told me this might be due to a power supply problem not
produced the required 12V required. Anyway, I now decided to
re-verify my power supply board still was producing the 5V-Dc, 12V-Dc
and -5V-Dc. I noticed that I do get these voltages as long as the
wiring harness to the Main PCB "IS NOT" plugged into the Main PCB.
When the wiring harness to the Main PCB "IS" plugged into the Main
PCB, I get the following readings:
Orange/Red wire and White wire = 5.0V-Dc
Orange/Red wire and White/Brown wire = -56V-Dc <-- different value **
Orange/Red wire and Black/Green wire = -110V-Dc <-- different value **
Is this change in the 12V-Dc and -5V-Dc readings explainable?
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