Troubleshooting; No Power - Sankey CLCD-2630 Service Manual

7- TROUBLESHOOTING

1. NO POWER

Check the power supply outlet
Y
OK
OK
N
N
Open the power supply
Check the F2
Replace F2
OK
Check U28 (24C64)
1． Check the voltage is ok
OK
2． Check I2C
Check the voltage
of F2(2A) Power:12V
Y
Check the indicator light is ok
Y
Y
N
Replace L20
- 24 -
N
Check U10 (SM601)
1. Check the voltage is ok
2. Check reset is ok
3. Check Y5(11.0592MHz)
Check E38, anode is 5V
N
Check U17（1501） Pin5, control the voltage
Check U17(1501) Pin2 is150MHz electric wave
Y
Check MCU U29 (T5BS4-9999)
1. Check the voltage is ok
2. Check reset is ok
3. Check Y4(27MHz)
1. Check the voltage of U19 is 3.3V
2. Check the voltage of U31
(FLASH)
3. Check Y4 (27MHz)