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Firmware Upgrade Installation
In some cases, the IN1502'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.
Follow these steps to replace firmware in the scaler.
Disconnect the AC power cord from the IN1502 to remove power from the
1.
unit.
2.
Remove the scaler from the rack or furniture.
3.
Remove the cover of the scaler (the top half of the enclosure) by removing
the four screws, then lifting the cover straight up.
1
2
M E
N U
N E
X T
4.
Locate the firmware chip(s) to be replaced on the circuit board, as shown in
the following illustration.
Locating the three firmware IC chips
Changes to firmware must be performed by authorized service personnel
only. Some IN1502 firmware updates must be performed at the Extron
factory.
To prevent electric shock or damage, always unplug the IN1502 scaler
from the AC power source before opening the enclosure.
Remove (4)
Lift Cover
Screws from
Straight Up
Top
A D
J U
S T
IR
IN
1 5
V ID
E O
0 2
S C
A L
E R
Do not touch any switches or other electronic components inside the
scaler. Doing so could damage the scaler. 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.
IN1502 • Appendix
A-5
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