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3. Failure of remote control
Check to see if receiver voltage is normal.
Abnormal
Inspect CPU voltage.
Inspect N804 base pin.
4. Screen display
Check to see if character
polarity of preduction
mode is altered.
Altered
Activate production mode
and press button 9 on the
remote controller.
Normal
Check to see synchronistic line and
signal input at 26 and 27 foot of N901.
No synchronistic
field signal
Inspect synchronistic field
signal input circuits (R307,
R915,R937 and V908)
No synchronistic
line signal
Inspect synchronistic
line signal input circuits
(C407, R407,C913,
R934,R935 and V907)
Inspect 28 and 29 foot at N901.
Inspect 31 and 32 foot at N901
Check and ,if necessary,
replace N901
Check to see if voltage
output available at F802.
Normal
Inspect receive.
Inspect R942 and C921.
Inspect N901.
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