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5.2.2 POWER SUPPLY UNIT
Flowchart of Failure Analysis for The POWER SUPPLY Unit
Failure analysis for the POWER SUPPLY Unit => PS1 STB 3.3 V power is not output.
A
Is the cable connected firmly to the P4 connector? Yes Is the cable to the P4 connector broken? No Is the cable connected firmly to the P9 connector? Yes Is the cable to the P9 connector broken? No Is the fuse (F001) blown? No Is one of the limiting resistors (R001/FR001) blown? No The POWER SUPPLY Unit is normal.
No
Properly connect the cable between the P4 and D23 connectors.
Yes Replace the defective cable (J104).
Check the voltage at the DIGITAL Assy and POWER SUPPLY Unit.
B
No
Properly connect the cable between the P9 and M2 connectors.
Yes
Replace the defective cable (J106).
Yes Replace the POWER SUPPLY Unit.
Yes Replace the POWER SUPPLY Unit.
Check the resistance between F001 and the D002 anode, using a tester.
C
Failure analysis for the POWER SUPPLY Unit => PS2
The power is not on, even though the RELAY port is active.
No Is the relay (RL002) on? Yes No Is the PFC voltage normal? Yes The POWER SUPPLY Unit is normal.
Replace the POWER SUPPLY Unit.
� Check the relay operation at the terminal (Pin 11 of P4). (Voltage: 3.3 V) � Check the relay sound (click).
D
Replace the POWER SUPPLY Unit.
� Check the voltage between the F301 lead (PFC OUT) and heat sink (GND of primary side) terminal. � The voltage must be around 390 V. Caution: High voltage!
Failure analysis for the POWER SUPPLY Unit => PS3
The cells of the panel do not light normally.
Is the VADR voltage within the specified values? Yes Is there a fluctuation in the VADR voltage? No Is the VSUS voltage within the specified range? Yes Is there a fluctuation in the VSUS voltage? No The POWER SUPPLY Unit is normal.
No
Replace the POWER SUPPLY Unit.
The specified voltage values are between 57 and 63 V.
E
Yes Replace the POWER SUPPLY Unit.
The ripple must be within 5 V.
No
Replace the POWER SUPPLY Unit.
The specified voltage values are between 205 and 215 V (VSU: 125/35°C).
Yes Replace the POWER SUPPLY Unit.
The ripple must be within 10 V.
F
PDP-6010FD
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