Commodore Plus 4 - Page 23

-TROUBLESHOOTING
CHART
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"
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Symptom Cause
Indicator light
not'ON'
No picture
Computer not
turned ON
Power cable not
plugged in
Power supply not
plugged in
Bad fuse in
computer
TV on wrong
channel
Incorrect hookup
Video cable not
plugged in
Computer set for
wrong channel
Switchboxnot
set to computer
TV not on
Random pattern
on TV with
cartridge in place
Cartridge not
properly inserted
Picture without Poorly tuned TV
color
TV not connected
Remedy
Make sure power
switch is in ON
position
Check power socket
for loose or discon
nected power cable
Check connection
with wall outlet
Take system to au
thorized dealer for
replacement of fuse
Check other channel
for picture (3 or 4)
Computer hooks up to
VHF antenna terminals
Check TV output
cable connection
Set computer for same
channel as TV
Check that switchbox
is in 'computer1 position
Turn TV on
Reinsert cartridge
after turning OFF
power
RetuneTV
Check
connections
properly
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