User manual

Power LED blinks 7 Times
Is the red LED
on the SC board
lit?
Replace the “D” Board
No
Yes
Does the
voltage at
TPSOS1 (L604)
go low?
Replace the SC board.
Note: Both, the SU and the SD boards may
load down the SC board. Isolate them before
replacin
g
the SC board.
No
Yes
Check voltage at TPSOS1 using a
peak-hold meter.
SC board
103