Extron Electronics System 8_10 Plus - Manual (Page 62)

Extron • System 8/10 P LUS • User’s Manual
Reference
B-7
Projector Control Upgrade
Changing the Projector Control Software Chip
Use this procedure when it is necessary to upgrade the Projector Control
software. Before starting, verify that power has been removed from the
System 8/10 P
LUS
by removing the AC power cord.
_______ Use ESD protection by grounding yourself
with an approved wrist strap. An electrostatic
discharge that is too small to be felt or seen
is still capable of destroying or causing
intermittent damage to IC circuits.
1. Use a small, flat-blade screwdriver to
remove the Front Panel Access Cover.
2. Locate the software chip at U3 in the illustration below.
3. Use a chip puller or other appropriate tool to remove the software chip.
_______ When placing the tool
under the chip to begin
pulling, be careful not to
damage the circuit
etches under the chip.
4. Ease the chip out in steps (see illustrations “a” to “d” on the left) by pulling up
slightly on one end and then the other, as illustrated to the left. If you try to
remove it too quickly, you may damage the chip and/or the circuit board.
5. With the chip out of its socket, check the area for circuit board damage.
6. Examine the new software chip to be sure that all pins (“legs”) are straight and in
perfect alignment.
7. Orient the new chip to the socket with the notch to the right, as shown at U3 in
the illustration above.
8. Carefully align each pin on the chip to its corresponding female pin (see
illustrations “e” and “f” on the right).
9. Using even pressure, press the chip into the socket. If
there is difficulty pressing it into the socket, see if any pins
(“legs”) are bent. If so, carefully remove the chip (Step 4),
straighten the leads and try again (Step 7).
10. On the rear panel of the System 8/10 P
LUS
, locate the
Address Configuration DIP switches in the lower right
corner. Set DIP switch #4 to the down position (see illustration to the left). This
will reset the switcher.
11. When the software chip is installed, apply power to the System 8/10 P
LUS
by
connecting the AC power cord. After power is ON for at least 15 seconds, set
DIP switch #4 to the up position. The switcher has now been reset.
12. Replace the Access Cover and put the System 8/10 P LUS back in operation.
U3
J2
J3
U1