Service manual

1. Confirm LED D17(flashing) ,13 lighting
2. If not CHECK OSC X1 output.
3. Check CTRL input voltage
(CONNECTOR P300)
4. CHECK 3.3V, 5V,15V.
5. Check IC 11 3.3V
IC 3 2.5V
4. Ctrl B/D
4. Trouble shooting.
Check oscillating state.
(normal 100 MHZ)
Be careful with physical shock.
Probe
Touching
point
Input voltage
Diode
OSC(X1)
Check IC 11,13
DMM +
DMM – (GND)