User manual

5 Troubleshooting
From our experience, most problems with the kit can be found by doublechecking the wiring
and a close examination of all connections and wirings.
As a first step, we would ask you to
- doublecheck ALL wirings
- Checking the power supply (please measure the voltage). Are there really +5.0V and
+12.0V on the PCB (maximum tolerance 5%).
-
Here is a list of known problems and their origins:
No display information, but keyboard works and CD is scanned.
- Wrong adjustment of contrast
- Data lines to display are connected the wrong way or short circuit between wires.
CD-ROM or hard disk is not found, display information is present.
- AT bus not connected properly, connector is turned 180 degrees
- CD ROM must be jumpered AT bus master, hard disk (if available) in slave mode
Audio-channels: Right and left channel reversed for audio CDs, correct for MP3:
- Turn connector on JP4 for 180 degrees
- Wrong connection on AF cable
Level on Head phones too low
- Head phones connected to line out
- Adjust level via OSCAR menue
CD-ROM drive operates with high rpm the whole time, lot of noise
- This problem is known from some drives, which do not allow proper speed adjustment via
the AT bus (e.g. TEAC). We recommend the use of actual Toshiba drives, which are also
used for the assembled OSCAR versions. They have proved to be highly reliable.
If you should continue to have problems to get OSCAR started or need other assistance,
please contact us at [e-mail].