3. Test & debug flow
Check the AC Voltage on
Power PCB (110V or 220V)
NO
Check Fuse and connections
to AC inlet
YES
Switch on the Power switch
Is the DC Voltage
outputs OK?
(5V,3.3V,9V,±12V,5VA)
Repair or Replace Power PCB
NO
YES
Is 3.3V,1.8V and 2V DC
outputs normal on decode
PCB?
Check the regulators or related diodes.
NO
YES
Insert the upgrade disc to update
the FLASH memory code.
Update FLASH
successfully?
A
YES
NO
1. Check 27MHz system clock.
2. Check system reset circuit.
3. Check FLASH R/W enable signal LOE#,WRLL.
4. Check servo related circuit.
5. Check FLASH Memory related circuit.
Press the power key on front panel
Replace R-core Transformer
3-4
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