Multipass Blinking

• 2 white blinks → WPC-89 detected
• 4 white blinks → WPC-S or WPC-95 detected
• 6 white blinks → Security code doesn’t match
• 8 white blinks → Security code can’t be read

• D20 blinks 1 time: problem with the CPU ROM
• D20 blinks 2 times: problem with the CPU RAM
• D20 blinks 3 times: problem with the ASIC or Security Chip

The settings are the same as the original CPU board W15 / W16 / W17 / W18.

Here is a helpful table to select your country:

The settings are the same as the original CPU board W1 / W2 / W3 / W4 / W5 / W6 / W7 / W8 (you can refer to the original WPC CPU manual for information).

As a helpful reminder, here are the default jumper settings:

On Twilight Zone, if you get the display error “Country Code must be specificed using jumpers W15-W18”, configure your country switches to AMERICA2

Switch matrix diagnostic quick guide

•  No switch detected at all
  – Verify J206 to J209 connections.
  – Verify alignment of J206 and J207 for WPC89.
  – Confirm the absence of corrosion in the connectors.
• Complete rows or columns in the matrix stay on or off
  – Check for short between the switch matrix and other voltages in the machine, keep in mind a short will damage U20.
• If after removing U20 all switches are opened, this component must be replaced.