Cyrus DVD6, Руководство по обслуживанию

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CYRUS DVD6 FAULT FINDING
© Cyrus Electronics Ltd Dec 2003 Cyrus DVD6 Service Manual Issue 1
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Blue screen /blank display
The player has lost its region setting or the region memory has been corrupted. The disc region will
need to be reset to the factory specified region which is shown on the rear panel. Contact Cyrus
with the serial number of the player for advice in these circumstances.
Note:- repeated region setting will cause the player to lock to the last region set. In this event a
replacement mechanism is required to re-enter a region.
No digital audio output
Check that the digital output has been enabled from the OSD using the Setup key with no disc
inserted. If a non-Cyrus decoder is used, check that it is compatible with the digital audio format
selected on the OSD.
No response to MC-Bus
The DVD 6 will not auto power via the MC-Bus when selecting CD as the source from a Cyrus pre-
amp or integrated amp. This is correct - it will only respond when AV is selected and must be
connected to the AV input if using the MC-Bus. For more details of the MC-Bus system see the
MC-Bus section in this Service Manual.
Laser module
Work to the laser mechanism requires precision and in many cases specialist equipment. Contact
Cyrus UK for advice in the case of a defective laser module.
Removing the laser mechanism
Eject the disc drawer and disconnect the power. Turn the player upside down and remove front
drawer trim by applying gentle pressure to the underside with your thumb, whilst supporting the
drawer with your index finger.
Reconnect the power to allow the drawer to automatically retract. Disconnect the two flex foils and
two header connectors from underside of the sub PCB. The laser mechanism can be removed by
releasing the two Phillips screws holding the cradle. Lift the mechanism up about two centimetres
from the chassis and unhinge the cradle by tucking it under the mechanism and sliding it out. The
mechanism should now be free to remove.
Picture Problems
Video faults can be traced by checking their specific signal components. To do this you will need a
DVD video test disc with colour bars. The chrominance signal can be checked by probing C_OUT
on the legend of R316. The composite waveform shows what the signal trace should look like at
TP201.
Chrominance Composite