Extron electronic QSD 204 manual Firmware Upgrade Installation, Lift Cover, Remove 4 Screws from

Firmware Upgrade Installation

In some cases the QSD 204’s firmware may require replacement with an updated version. There are three user-replaceable firmware chips: U41 — the main microcontroller, U38, and U17. The numbers are printed on the circuit board. We recommend that you send the unit to Extron for service and updates.

Changes to firmware must be performed by authorized service personnel only. Some QSD 204 firmware updates must be performed at the Extron factory.

Follow these steps to replace firmware in the decoder.

1.Disconnect the AC power cord from the QSD 204 to remove power from the unit.

To prevent electric shock or damage, always unplug the QSD 204 decoder from the AC power source before opening the enclosure.

2.Remove the decoder from the rack or furniture.

3.Remove the cover of the decoder (the top half of the enclosure) by removing the screws, then lifting the cover straight up.

Lift Cover

Remove (4) Screws from

Straight Up

1

2

3

4

COL/
TNT	CENTER
	MENU
BRT/
CONT	BLANKING
	NEXT

	AD
	JUST
DIGITAL	QUAD-
			D 2
	STANDARD
		QS
			04
			DECODER

Top

Do not touch any switches or other electronic components inside the decoder. Doing so could damage the decoder. Electrostatic discharge (ESD) can damage IC chips even though you cannot feel it. You must be electrically grounded before proceeding with firmware replacement. A grounding wrist strap is recommended.

4.Locate the firmware chip(s) to be replaced on the circuit board, as shown in

the following illustration.

QSD 204 • Appendix A-5