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14. Don't operate RJP
Check the "RJP" item
on SVC Menu.
Yes
Is the supply
12V power of RJP good.
(JK1300_Pin1)
Yes
Is the I2C
communication good.
(IC103)
No
Check the RJP & Replace the RJP.
15. Don't operate Buzzer
Check the "Time" item
on user Menu.
Yes
Push to alarm key
in user remote control.
Yes
Check input &
output of IC1300
No
Check the Buzzer(BU1300) &
Replace the Buzzer.
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Only for training and service purposes
No
Replace the "RJP" item from
No to Yes.
No
Check the supply Power.
No
Check the I2C line of IC103.
No
Check the current time establishment
on "Time" item of user menu.
No
Set to the alarm time.
No
Re-solder or replace the defect part.
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LGE Internal Use Only
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