Table of Contents
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DPS-475/575 Service Manual
General Procedures
Check Supply Voltages
Firmware Upload
DCN Port Check
102
•
Check front and rear panel for defects, etc.
•
Check that switches operate normally and do not stick.
•
Check board for missing parts, unsoldered parts, bent pins, dirt or
other contaminants.
•
Tighten AC Power ground strap.
•
Tighten all connectors, cables, screws, nuts, etc.
•
Ensure that cables are routed properly so that they are not pinched, and do not
block air flow through the unit.
•
Push down all socketed ICs.
•
Connect Rear Panel Assembly remote control board (843-572), but do not screw
it down, as access to the RGB potentiometers may be required.
•
Connect all video cables, and 9-pin serial cable for upload of firmware if
required.
Using an ohmmeter, check that these points are not shorted to Ground. Then, using a
voltmeter, ensure proper voltage measurement:
1) positive side of EC10 (+3.3V),
2) negative side of EC9 (-12V).
3) positive side of EC8 (+12V).
4) positive side of EC7 (+5V).
Ensure that the latest firmware files have been uploaded to the unit. If new firmware
files must be uploaded, see Appendix D, "the Uploader software," for instructions on
uploading firmware to the unit.
DPS-475 units should contain at least one file with each of the following extensions:
.VF5, .HTDB, and .FRM. DPS-575 units should also contain a file with the
extension .VF6. Audio-equipped units should also contain a file with the extension
.AFG.
1.
This test requires another DPS-475, DPS-575, RC-4000 or RC-475 unit to be
connected to the same DCN network as the unit to be tested. Disconnect Ethernet
from the unit to be tested.
2.
On the front panel, press the Remote button. If the DCN connection is
established, the other remote units (DPS-475, DPS-575, or RC-475) should
appear in the list of selectable Remote Units. Note that it may take a couple of
minutes for network polling to detect all remote units.
3.
From an RC-4000 remote control, select Search for Devices. RC-4000 remote
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