Midway 4-Player 25" Dedicated Video Game manual Software Update Troubleshooting Table

Video Troubleshooting Table, continued

			Enter Monitor Tests Menu. Watch Crosshatch
• Picture is too narrow	Maladjusted WIDTH		Screen while adjusting WIDTH pot for best
	pot		picture. You’ll find this pot on Monitor Remote
			Control Board, behind coin door.
		1. Enter Monitor Tests Menu. Watch Crosshatch
• Picture is too short	Maladjusted HEIGHT		Screen while adjusting HEIGHT pot for best
	pot or damaged		picture. You’ll find this pot on Monitor Remote
	vertical circuit		Control Board, behind coin door.
		2. If pot has no effect, service vertical output circuit.
			Enter Monitor Tests Menu. Watch Crosshatch
• Picture seems shifted to one	Maladjusted		Screen while adjusting HORIZONTAL POSITION
side	HORIZONTAL		pot for best picture. You’ll find this pot on Monitor
	POSITION pot		Remote Control Board, behind coin door.
		1.	Substitute working yoke.
• Keystone-shaped picture	Shorted turns in yoke	2.	Have service bureau converge monitor.
		3.	Retest monitor.

Software Update Troubleshooting Table

	SYMPTOM	CAUSE		REQUIRED ACTION
		You skipped steps or		Return update components to kit, reinstall
•	Update didn’t work	performed them out		original parts in cabinet, and try process again.
		of sequence.
•	After update procedure,	Installation error may	1.	Inspect for bent or broken pins.
	screen reports lower than	have damaged	2.	If you have another kit, try it.
	latest version	device.	3.	Ask your distributor to check your upgrade ROM.
• No Attract Mode screens		Mismatched boot		Boot ROM and disk version numbers must
		ROM update version		match. If necessary, replace boot ROM or disk.
•	Board indicators illuminate,	and hard drive.
	but screen is completely
	blank	You installed boot	1. Be certain that boot ROM device resides in
		ROM in wrong
				proper socket.
		socket.
			2. If necessary, move boot ROM to proper location.
			1. Install disk ROM. Only use upgrade socket for
		You installed upgrade		hard disk drive updates.
		ROM in wrong	2.	Load ROM contents onto drive.
		socket.	3.	Remove ROM from game.
		Upgrade ROM	1. During game play, upgrade ROM must be
		remains in VGM
				empty. Switch off VGM.
		(video game
			2.	Remove upgrade ROM.
		machine) during
			3.	Switch on VGM.
		game play.
			4.	Retest Game Mode.

NOTICE: Someday, software updates for your VGM (video game machine) might become available. These upgrades may improve your VGM’s performance or add new VGM features. Such upgrades tend to appear sometime after factory first releases VGM. Contact your distributor for information about updates.

Troubleshooting 6-11