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Note:
The power supply and power supply drive board are
combined into one part, need to replace the whole
part.When replacing power supply driver board board,
please re-connect all the wires back correctly. Any wrong
wiring may result in damage.
1-11
Connection
problem/
Defective CPU
control board
• Measure the incoming voltage on the CPU control Board
at terminal J 22, See drawing 1-12 above to locate
terminal J 22.
• Voltage should be 12VDC.
• If voltage is out of range, check connection between
SMPS and CPU control board.
• If voltage is correct, replace the CPU control Board.
Note:
When replacing CPU control Board, please re-
connect all the wires back correctly. Any wrong wiring may
result in damage.
Terminal J22 = DC12V
1-12
Two beeps after
power on. The
screen displays
“Please insert block”
with audible beep.
Loose
connection
between the
block and main
unit.
• Turn off the power.
• Remove the block from the main unit.
• Reinstall the block.
• Turn on the power.
1-13
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