Big Buck Hunter Pro 
                         Technical Service Bulletin

To:  Parts and Service Managers				Date: February 28, 2006

Symptom: Games may intermittently go to a gray screen then need to be turned off and on to restart.

Solution: Upgrade software to Version 1.05.

1.	Open back door of the Big Buck Hunter Pro.
2.	Locate I/O board on right side of PC.   
3.	Find the I/O Board DIP switch bank. The bank is the size of a 16-pin DIP IC. The bank has 8 switches.
4.	Disable the watchdog timer by setting DIP switch 8 to the “On” position. You can use a pen or pencil tip to toggle the switch. A jeweler’s screwdriver also makes a good DIP switch setting tool.
5.	To access the PC, open the coin door.
6.	Open the DVD tray by pressing the button on the DVD drive.
7.	Insert the supplied recovery disk into the tray.
8.	Close the DVD tray by pressing the button on the DVD drive.
9.	Turn “off” the PC by pressing the power button once.
10.	Turn “on” the PC by pressing the power button once. The disk recovery process begins automatically. Recovery may take 30 to 40 minutes.
11.	Look for a message at the bottom of the screen. When recovery is over, the message prompts you to remove your disk. Open the DVD tray by pressing the DVD drive button. Remove the recovery disk. Store it safely.
12.	Turn DIP switch 8 back to the “off” position.
13.	Turn “off” the PC by pressing the power button once.
14.	Turn “on” the PC by pressing the power button once.

* Caution!  During the following process, don’t interrupt power or reset the game!

15.	The VGM should initiate a normal startup sequence. In that case, the game initializes and loads. The process takes about five minutes. When the game enters Attract Mode, the hard drive recovery process is complete. If the process seems abnormal, troubleshoot the VGM or call for service.
16.	Proceed with gun calibration and make necessary game adjustments. See chapter 3, Diagnostics, Audits & Adjustments in the owner’s manual.

If you have any questions or need further assistance please contact Betson Enterprises at 800-524-2343 ext 3331  M-F  8:00am to 4:30pm EST.