VIORE PDP4210EA Service Manual page 98

4. Trouble shooting.
5. Y-sus B/D
1. Check FUSE [FS1(5v) ,FS2(Vs)].
2. Check voltages(Vsetup,-Vy, Vscw)
3. Check DIODE between GND and Y SUS output.
[SUSUP(OC2) SUSDN(OC1)].
forward=0.4 ,reverse=OVERLOAD.
4. Check whether output voltages agrees
with voltage that represented in label.
Vscw
-Vy
25 /40
Vsetup
setdn
setup
FS2
FS1