Hitachi L32A102, Service Manual

Page: 37 / 65

3 7
SYMPTOM: NO WORK/LED IS RED ABNORMAL
No work / LED is red
Replace U2,U25,U29,U49
Yes
Yes
No
No
Check if RMC
PCB is normal
Replace RMC PCB
Replace Main PCB
Check if voltage of U2,
U25,U29,U49 is normal *
U2
U25
U29
U49
+5 V
+5 V
+5 V
+5 V
+3.3 V
+3.3 V
+2.6 V
+1.26 V
V
out
V
in
* S e e below diagrams