Midway Offroad Thunder, Operation Manual

Page: 147 / 150

Troubleshooting 6-15
Video Troubleshooting Table, continued
SYMPTOM CAUSE REQUIRED ACTION
•
Picture is too short
Maladjusted HEIGHT
pot or damaged
vertical circuit
1. Enter Monitor Patterns Menu. Watch Crosshatch
Screen while adjusting HEIGHT pot for best
picture. You’ll find this pot on Monitor Remote
Control Board, behind coin door.
2. If pot has no effect, service vertical output circuit.
•
Picture seems shifted to one
side
Maladjusted
HORIZONTAL
POSITION pot
Enter Monitor Patterns Menu. Watch Crosshatch
Screen while adjusting HORIZONTAL POSITION
pot for best picture. You’ll find this pot on Monitor
Remote Control Board, behind coin door.
•
Keystone-shaped picture
Shorted turns in yoke
1. Substitute working yoke.
2. Have service bureau converge monitor.
3. Retest
monitor.
Software Update Troubleshooting Table
SYMPTOM CAUSE REQUIRED ACTION
You skipped steps or
performed them out
of sequence. Return update components to kit, reinstall
original parts in cabinet, and try process again.
You connected linked
VGMs (video game
machines) to cabinet
being updated. 1. Network communication circuits may have
prevented full update. Turn off power to all
connected cabinets.
2. Perform update on one cabinet at time. If power
is off, you need not disconnect linking cables.
•
Update didn’t work
•
After update procedure,
screen reports lower than
latest version
Installation error may
have damaged
device. 1. Inspect for bent or broken pins.
2. If you have another kit, try it.
3. Ask your distributor to check your floppy disk.
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.