No power
Check if the Power Cord
is connected
Check the AC
outlet
No sound
Check if the speakers
are connected correctly
Check if the Main
Board has provided
voltage
Check if the Main Board
has provided voltage
Replace a new
one
Switch on the Timer
No display
Check if the Dc output
provided voltage
(about 34.5V)
Adjust the volume
Check the files or folders in
USB or others devices has
not exceeded the certain limit
Time/Clock does not work
Plug in the power cord
Reset the Time/Clock
Replace a new
Power Board
Check if the USB or other
devices are connected
Check if the USB or other
devices are incompatible
Check the data wire which
connected the Main Board,
if has provided voltage
Check if there is voltage
supplied to the USB Board
Check if the CPU IC
has provided voltage
Check if the VFD Board
has provided voltage
No
Replace a new one
No
Replace a new
AC Cable
No
Replace a
new one
No
Replace the IC PT6311
/SC16311/CD16311
No
Replace the
Main Board
No
No
Check if the CPU IC
has provided voltage
Replace the
Main Board
No
Y
Y
Y
Y
Y
Y
Y
Y
Malfunction Follow Check Chart
2-2
2-2
Summary of Contents for MCD122
Page 15: ...6 2 6 2 LCD Display Board Layout Diagram ...
Page 18: ...Power Board Layout Diagram 7 3 7 3 ...
Page 23: ...8 5 8 5 Decoder Board ...
Page 24: ...9 1 9 1 Exploded View ...
