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5
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Model No.: HTS-518DVD
Version: 1.0
Check whether ICU11-U153-5
works suitably under 16V?
RELAY is
activated?
Check whether
R64 works
under 12V?
Replace
RELAY
ICU18’s working
voltage is normal?
IC foot is not
soldered tightly
Re-solder IC
OK
Whether RELAY
2-3 is activated?
NO OUTPUT
Replace ICU11 or
U15
OK
OK
YES
YES
YES
YES
NO
NO
NO
NO
