Oled Doesn't Light - Marantz NA8005 Service Manual

2. OLED doesn't Light

Check DC voltage
• FRONT PCB
• BN85 7pin : + 3.3V
Check DC voltage
• FRONT PCB
• BN85 6pin : + 3.3
Check DC voltage
• FRONT PCB
• BN85 4pin,5pin : around +22V
Check DC voltage
• FRONT PCB
• IC81 3pin : +16V
Check reset signal
• FRONT PCB
• WF81 25pin(EL_RESET) : +3.3V
Next page
YES
YES
YES
YES
YES
Check DC voltage
NO
• POWER PCB
• CN85 7pin : +3.3V
NO
Check device
• POWER PCB
• IC910 2pin : + 3.3V
NO
Is DC voltage normal?
• POWER PCB
• CN85 6pin : +3.3V
NO
Check device
• POWER PCB
• IC907 2pin : +3.3V
NO
Check DC voltage
• POWER PCB
• CN85 4pin,5pin : around +22V
NO
Check device
• POWER PCB
• Fuse F902
NO
Replace IC81.
Check reset signal
NO
• DIGITAL Board
• U6002 25pin (EL RESET) : +3.3V
NO
Check Soldering or replace
• DIGITAL PCB
• IC11
30
YES
Check Wire BN85.
YES
Check Wire BN85.
YES
Check Wire BN85.
YES
Check Soldering or replace
• DIGITAL PCB
• WF11 and FFC cable