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Panasonic Canada Inc.
5770 Ambler Drive
Mississauga ON
L4W 2T3
Tech Tips
Product: Models TH65PZ850U, TH58PZ850U, TH50PZ850U, Numb
Plasma TV TH46PZ850U, TH58PZ800U, TH50PZ800U, er: TT-08-41
TH46PZ800U, TH42PZ800U, TH50PZ80U,
TH46PZ80U, TH42PZ80U, TH50PX80U,
Code: TH42PX80U, TH50PZ85U, TH46PZ85U, Date:
B62 TH42PZ85U Jun 13, 2008
Model Year: 2008


PCB Designation: A boards supplied from factory


Part #: TNPH0716XXX, TNPH0721XXX & TNPH0731XXX series


Symptom:

Once AC power cord is plugged in, unit will turn on by itself. Depends on factory settings, unit will either
display Video, Component or Tuner icon. After few seconds, screen will change to service mode automatically.
NOTE: Since unit is in service mode, only buttons 1, 2, 3 or 4 on remote are working (rest of buttons are non-
functional).


Cause: All new A boards supplied from factory needs to be initialized.



Remedy:

1. Perform HARD RESET of Plasma TV unit by pressing & holding VOL DOWN (-) on unit and MENU
button on remote at the same time for about 3 seconds.
2. After hard reset, please confirm if Plasma TV powers ON in user mode and check overall functionality.




Published by Customer & Product Assurance TT-08-41 Page 1