Unitec Wash Select II User Manual

W A S H S E L E C T I I
Document Number: WS21002 102
Document Title: WSII Operations Manual
1. Remove the existing EPROM located at connection U58 on the CPU board (see
Figure 9) by inserting a small flat-blade screwdriver between the EPROM and the
socket and prying it off. Be careful not to damage the socket or the circuit board.
Figure 9. Locating the EPROM and Reset System Memory Button

Caution:
Take care not to damage any pins when removing or installing chips.
2. Insert the new EPROM into the socket on the board. Chip pins may need to be
adjusted to fit into the socket. Use the following steps to adjust the pins:
 Lay the chip on its side with the pins facing away from you.
 Gently rock the chip away from you to bend the pins.
 Lay chip on its other side and rock it away from you.
 Repeat the above steps, alternating sides of the chip, until pins are at approximately a
90-degree angle and line up in the socket.
3. The notched end of the chip goes up. There is a silk-screened image on the CPU
board you can use to line up the notch correctly. This image is labeled EPROM.
4. Push the EPROM chip in gently. Do not force it, as you may cause damage to the
chip or the CPU board.

Unitec Wash Select II Specifications

General

Brand	Unitec
Model	Wash Select II
Category	Touch terminals
Language	English