B-5
VSC 200/200D/300/300D Reference Information
Installing a firmware update
To install a firmware update, you may need to replace IC (integrated circuit)
U41, U69, or U70, or any combination of these. Replacing these ICs may
result in loss of presets and other settings.
1.
Remove the cover of the scan converter. See “Internal access” on page B-2.
Make sure you are electrically grounded before touching IC chips.
Electrostatic discharge (ESD) can damage IC chips, even if you cannot
feel, see, or hear the discharge.
2.
Locate the ICs to be replaced (see figure 30). The update kit will list the
specific ICs.
Figure 30 — Locating and replacing ICs
3.
Remove the existing chip and set it aside.
To remove IC U41, use the PLCC (plastic leadless chip carrier) IC puller to
remove the old IC. Align the hooks on the puller with the slots provided in
opposite corners of chip socket U41. Insert the hooks, squeeze gently, and
pull the IC straight out of the socket.
To remove IC U69 or U70, use a standard IC removal tool.
4.
Install the new chip.
To install IC U41, locate the angled corner of the new chip. Orient the corner
to match the angled corner of the socket, and press the IC into place.
To install IC U69 or U70, locate a notch or a printed dot on top of the IC.
Align the notch or dot with the notch on the socket or circuit board. Align the
IC pins with the holes in the socket, and gently press the IC into the socket.
U41
Align Notches
U70
U69
im Vertrieb von
CAMBOARD Electronics
www.camboard.de
Tel. 07131 911201
Fax 07131 911203
