User manual

Power LED blinks 7 Times
Yes
Is the red LED
(D6583) on the
SC board lit?
No
Yes
Does the
voltage at
TPSOS1 go
low?
Replace the “D” Board
No
Replace the SC board.
Note: Both, the SU and the SD boards
may load down the SC board. Isolate
them before replacing the SC board.
Check voltage at TPSOS1 using a
peak-hold meter.
SC board
SC board
73