4-9
Remote reception is insensitive or fails.
No
Remote reception is
insensitive or fails.
Check if the remote
control works properly.
Check battery
Check R315
、
C315
Use an oscilloscope to check if there is
output waveform from the first pin IR of the
remote censor after pressing button on the
remote control.
U201(PIN 3 - RC
waveform)
Check if there is IR
signal on pin 106 of U3
Check if the power supply
voltage to the remote censor
is normal are normal.
Go
No
No
No
Yes
Yes
Yes
Correct connection
Yes
Change U3
IR
waveform
Trouble shooting chart
Содержание SDV434/19
Страница 23: ...Service Engineer Remarks 6 2 ...
Страница 25: ...6 4 6 4 Front Board Top Side Front Board Bottom side ...
Страница 29: ...7 3 7 3 Power Board Top Side ...
Страница 36: ...8 6 8 6 Mpeg Board Top Side ...
Страница 37: ...8 7 8 7 Mpeg Board Bottom Side ...
Страница 42: ...Mechanical Exploded view 9 1 ...
Страница 44: ...REVISION LIST Version 1 0 Initial release 10 1 ...