Trouble Shooting; Oled Dosen't Light - Denon DNP-730AE Service Manual

TROUBLE SHOOTING

1. OLED dosen't light

Check the Power Supply Voltages for OLED.
FRONT PCB
・+3.3V_D1
[CP401、26pin]
Check the Power Supply Voltages for OLED.
FRONT PCB
・+18V_OLED
[CP401、29pin]
Check the Power Supply Voltages for OLED.
FRONT PCB
・+16V_OLED
[CP402、30pin]
Check the communication signal for OLED.
FRONT PCB
There are no abnormal voltages, such as middle potential.
There is no abnormal waveform.
[CP402、2-18pin]
Replace the OLED.
YES
YES
YES
YES
Check the status of the following parts and check the solder.
MAIN PCB
NO
F103,IC106、CN100
Other, connected circuit.
Check the status of the following parts and check the solder.
MAIN PCB
NO
F102,ICN100
Other, connected circuit.
Check the status of the following parts and check the solder.
MAIN PCB
NO
IC400
Other, connected circuit.
NO
Check the abnormal signal path.
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