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Installing a firmware upgrade, Maintenance and modifications, cont’d, Caution – Extron electronic ISM 482 User Manual

Page 87: Extron ism 482, Switcher

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Integration Scaling Matrix Switcher • Maintenance and Modifications

7-4

Maintenance and Modifications, Cont’d

Installing a Firmware Upgrade

In some cases the ISM’s firmware may require replacement with an updated
version. There are nine user-replaceable firmware chips (figure 7-2): U1, U2, and
U6 on the front panel circuit board and U98, U99, U100, U101, U102, and U103
on the main circuit board. The U-numbers are printed on the circuit boards.
Extron recommends that you send the unit in to Extron for service and updates.

1

2

3

4

5

6

7

8

10

0-

240

50/60 Hz

1.2A MAX.

R

1

G

B

H/HV

R

2

G

B

H/HV

R

3

G

B

H/HV

R

INPUTS

4

G

B

H/HV

R

5

G

B

H/HV

R

6

G

B

H/HV

R

7

G

B

H/HV

R

8

G

B

H/HV

B

H/HV

V

H/HV

V

Extron
ISM 482

Switcher

U1
U2

U100
U101

U6

U102
U103

U98
U99

Figure 7-2 — ISM firmware chip locations

• Chips U1 and U2 are replaced as a pair.

• Chip U6 is replaced alone.

• Chips U98, U99, U100, and U101 are replaced as a set.

• Chips U102 and U103 are replaced as a pair.

CAUTION

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

Replace firmware in the ISM as follows:

To prevent electric shock, always unplug the
ISM from the AC power source before opening
the enclosure.

1

.

Open the switcher. See “Opening and Closing the
Switcher” on page 7-2.

2.

Locate the firmware chip(s) to be replaced on the
main or front panel circuit board (figure 7-2).

3.

After you are electrically grounded, use a DIP chip
puller to grasp each IC chip and pull it out of the
socket(s).

U102

Align notches.