46
Systems, Controls and Operations
Model C602
040608
UVC3 EPROM Chip
The EPROM is inserted into a socket on the UVC3
board. The angled corner on the chip identifies the
correct position for installation. A PLCC type
extraction tool is needed to remove the chip from the
socket. (See Figure 88.)
Figure 88
Note: Attempting to remove the EPROM from the
socket without using the recommended extraction
tool may damage the control board.
It is recommended to record the program settings in
the Service Menu before replacing the EPROM chip.
You must be properly grounded during chip
installations to prevent possible damage to the chip
from electrical discharge. The use of a grounding
strap is recommended.
WARNING: Place the power switch in
the OFF position and unplug the machine from
the power outlet before attempting the chip
replacement. Failure to follow this instruction may
result in electrocution.
RAM Chip
When installing an EPROM chip with a new program
version it is recommended to clear the memory in
the RAM chip before installing the EPROM chip.
(See Figure 89 for RAM chip location.)
Figure 89
To clear the memory, briefly remove the RAM chip
from the socket. Be careful not to bend the pins. To
reinstall the chip, align the notch on the chip with the
notch end of the socket. Partially insert all the pins
on one side of the chip into the socket and then all
of the pins on the other side. Press the chip firmly
into the socket and check to insure all the pins are in
place.
EPROM Chip Replacement
1. Insert the extraction tool pins in the two slots in
chip socket. Gently squeeze the tool to raise
the chip from the socket. For installation, align
the angled corner of the chip and socket and
insert the chip until it is fully inserted.
2. Reinstall the control box cover and rear panel
and restore the power to the machine.
3. You must first select the language to be
displayed on the screen. (See Figure 90.)
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Figure 90
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