JSD-80
TECHNICAL SUPPLEMENT
#011-05

A few early JSD-80 units were shipped with incorrect flash chips on the JSDO-80 Output (center) Module. Units with the incorrect chips will lock up when a firmware update is attempted.

Before attempting to update the firmware on the JSD-80, look at the JSDO-80 Output Card and verify that is has the correct flash chips.

Inspection Procedure
1. Power off the JSD-80
2. Remove the JSD-80 front plate and extract the JSDO-80 Output (center) Module

Using the tab, pullout the JSDO-80 Output Module

JSDO-80 Output (center) Module. Location of U34 & U38

4. If the JSDO-80 Output Module has the incorrect chips U34 & U38, the entire module must be replaced. Do not attempt to update the firmware of this unit. Please contact USL, Inc. Customer Service and request a replacement JSDO-80 Output Module.

5. If the JSDO-80 Output Module has the correct chips, re-insert the JSDO-80 Output Module into the JSD-80 unit. Re-attach the front plate and power up the JSD-80. The unit may now be updated and used.