Denon DNP-730AE - Trouble Shooting; OLED Dosent Light

29
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 status of the following parts and check the solder.
MAIN PCB
F103,IC106
、
CN100
Other, connected circuit.
Check the status of the following parts and check the solder.
MAIN PCB
F102,ICN100
Other, connected circuit.
NO
NO
YES
YES
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]
Check the status of the following parts and check the solder.
MAIN PCB
IC400
Other, connected circuit.
Check the abnormal signal path.
NO
NO
YES
Replace the OLED.
YES