Unitec Wash Select II With WashPay Integration Operations Manual - Manual (Page 58)

W A S H S E L E C T I I
Document Number: WS21058 46
4.2 Software Updates
To upgrade the WSII software, perform the following procedures:
1. Remove the existing EPROM located at connection U58 on the CPU board (see
Figure 5) 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 5. 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.
Document Title: WSII Operations Manual ver 6.10