(Topic ID: 178926)

WOZ Replacement Battery


By AtlanticPinball

2 years ago



Topic Stats

  • 24 posts
  • 13 Pinsiders participating
  • Latest reply 8 months ago by IceFang
  • Topic is favorited by 6 Pinsiders

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#3 2 years ago

Look on page E6 in the manual... one of the last pages ... sorry some text isn't pasting right from my iPad:

Your game’s CPU board uses a 3V coin cell, lithium ba ery (CR2032) to maintain its basic input/out- put system (BIOS) se ngs when the game is powered down. If these se ngs are lost, the CPU will not boot when the game is powered up. The life expectancy of the CR2032 ba ery is approximate- ly three years. It is important to change your game’s CPU ba ery before it discharges below 3V. However, in order to preserve the CPU’s BIOS se ngs, the change must be made while the game is powered on. A step-by-step process for replacing the ba ery is provided below.

#17 2 years ago
Quoted from Homepin:

It is very simple to understand.
Your desktop and laptop both have these same batteries for the same purpose as the PC motherboard in WOZ.
WOZ is just a PC inside the cabinet with some extra add-on boards to interface with pinball parts like switches and solenoids.
WMS/Stern/DE/Spooky/TV remote controls/your motor car and millions of other devices use a different computer system called "embedded controller" and this does NOT rely on BIOS or batteries like a PC does.
Imagine if your car used a PC motherboard to control its many systems. It is a very bad choice for operating many of these types of things. Great for desktop/laptop systems but look at the problems most people have with them (PC's) on a daily basis. I have said it before and been shouted down but it is starting to come home to roost.

One other difference that may be there (speculating) ... with the switch off on the pinball machine, I don't think any power is being supplied to the computer. With standard desktops and laptops, even if off there is a small amount of power to the motherboard which reduces the discharge of the battery.

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