6-2
FAILURE MODE FLOW CHART
Check voltage – Main PCB(009B) CN16 (Pin 11) and CN9(Pin1)
No display (No power)
Blank display
Enter key input
Yes
No
Yes
Some beep
sound?
Warming drawer
display blank?
Check AC input voltage of Main PCB
-Main PCB CN2 (pin 1 and 3)
Replace the warming drawer
display PCB(011A)
(-)4.5V ~ (-)5.5V ?
END
Replace the main PCB(009A)
END
1
CN16(Pin11)
Voltage should be
(-)4.5V ~ (-)5.5V
Main PCB(009B)
No
Yes
CN9(Pin1)
No
Check the thermal fuse
(See the page 3-1)
(Go to page 6-4)