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

If you have an early WPC game (like Harley Davidson) with a small ROM size (512K/1M), you have to follow the W1 / W2 switch settings.

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.

RTC: Real Time Clock is a clock to keep time and date running even when the machine is off. A battery is mandatory to keep time running.

Battery: By default, a battery is needed to keep settings and time on CPU boards.

NoVaRAM: Having a Non Volatile RAM keeps your settings and high score stored forever, even without backup battery (CR2032 or external battery).

Battery + NoVaRAM at the same time:

Having both the NoVaRAM and the battery installed is actually the best arrangement.

With NoVaRAM on board, your settings are preserved under any circumstances. Meanwhile, the battery ensures that the machine’s real-time clock (RTC) keeps ticking, so you won’t lose your date and time settings.

On the RocketCPU (WPC-S & WPC-95 pinball machine), the original “SECURITY CHIP” is not needed.

Do not install it on the NVRAM DIP holder socket, the RocketPCU won’t be able to boot.

If you ordered a Ready to Play RocketCPU, please contact us as they are tested at shipping.

Check defect on pins like:

• broken pin (frequent on oxydized ASIC)
• bent under chip pins
• mis-inserted pins
• oxydised pins

Check the following components

• CPU
• ROM
• ASIC

Do not consider older chip from oxidized board good: use chips from known good CPU board.

Security chip installed on NVRAM DIP holder socket (this will prevent the RocketCPU from booting). The Security Chip is not needed on the RocketCPU and must not be installed anymore.

Reversed ribbon cables (do not trust aftermarket ribbon cable as connectors might be crimped in the wrong way): disconnect every ribbon cables from the RocketCPU and turn on your machine, check the Smart Status LED.