No Power - Eiki LC-XNS2600 Service Manual

No power

Please check as follows:
I n p u t 2 2 0 V ， P o w e r
indicator is off
No
Start failed, Power
Indicator is orange
No
Power indicator is green
but lamp is off
No
Projector is started but
power indicator flashes in
orange
Yes
Check if 16V and 6V on
main board is normal
Yes
Check 3_3V_MCU，if
ON_MCU（pin 7 of
IC1801）is high level ？
Yes
1.1、Chek IC3150 and IC3120.
2.1、Re-burn Sub CPU and Flash
program.
2.2、Replace IC1004
Yes
1、Check IRIS.
2、Check if FAN_A，FAN_B，FAN_C are low level.
1、Check if P3001 is connected well.
Yes
2、Check if LAMP SW（P3002）is connected well.
3、 Check if pin 1 and 2 of IC3003 is high level and pin 4 ifs
low level.
Yes
1、Check if TEMP. A（P3005) is connected well.
2、Check IC1301, IC1302 and the peripheral circuit.
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Troubleshooting
No Power supply error
Check the fuse and other
c o m p o n e n t s o n p o w e r
board.
1.1、3_3V_MCU is low
level,check IC3001，
NO
2、If pin 7 of IC1801 is low
level, replace it.
2.1、Re-burn Sub CPU and
Flash program.