I have a manual..if you need something specifically scanned I would be glad to help out....

Also...from Cliffs repair guides, specifically for system 3's.....

"After the new battery is installed, check for 3.2 volts DC at U6 pins 2,3,6 (ground is U6 pin 4). Note there is no blocking diode used for the battery, as the battery only provides power to U6 pin 2 (the U6 chip manages power distribution to the RAM at U3, and the blocking diode is internal to the U6 chip). Upon first power up, the game will still display the same dead battery message. Just turn the game off, and power it back on, and the game should boot normally. If the battery error message still appears, there is most likely a problem with the Dallas DS1210 non-volatile controller chip at U6. "

and....
sys3.jpg
"A 1992 Cueball Wizard were the original Lithium battery has started to cause corrosion
damage to the Dallas U6 chip and the CPU board. This particular board's battery had
damaged the U6 chip enough so the game would not boot correctly (game booted with
nonsense text on the DMD and a very fast flashing CPU LED, and the game would not
go into attract mode or self-test)."