Marq Gamut PAR H7, Service Manual, Page: 6 / 13

Dismantle the not worked button to change new one.
Fan stop
If everything normal, only the fan not work, use multi ‐ meter to check if voltage exist terminal for fan. If exist voltage, then
change the fan, if not exist voltage, then change sensor LM2576T ‐ 12V or change the main board.
No Display or
incompletely
display
If led light up but no display or incompletely display, change the Digital Tube , or change the whole main board(display board)
No response
of active
function
Check if MENU function S ‐ 01 ~ S ‐ 04 , adjust the sound active sensitivity to be higher(0~255), if not MENU data problem, then
change the microphone or change the whole main board
Led light up
but color not
normal
Change the corresponding color’s sensor LM317S on led board.
Some MENU
button not
work
Indicator light