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Appendix, cont’d
DVS 204 • AppendixA-6
Locating the three firmware IC chips
5. After you are electrically grounded, the U17 IC chip or
U38 IC chip may be removed by grasping it firmly with
your fingers and pulling it out, then continuing to step
8.
Removal of the U41 IC chip requires a PLCC IC puller
tool. To remove the U41 chip, align the hooks of a
PLCC IC puller tool with the slots located in opposite
ends of the U41 firmware chip.
6. Insert the hooks into the slots, and squeeze the tool
gently to grasp the chip.
7. Pull the chip straight out
of the socket, and set it
aside.
8. For U17 and U38, align
the notch of the new
firmware chip with the
notch of the socket in the
same orientation as the old chip.
For U41, align the angled corner of the firmware chip with the angled
corner of the socket.
9. Gently, but firmly, press the chip into place in the socket.
10. Replace the top cover on the DVS 204 scaler, and fasten it with the screws
that were removed in step 3.
11. Rack/furniture mount the scaler, and reconnect the AC or DC power cord.
U41
Align Notches
U41
U17
U38