User manual

Corrupted EEPROM data in the 480i addressing area for
Models Number: TH-37PD25U, TH-37PX25U, TH-42PD25U,
TH-42PX25U, and TH-50PX25U (Service Bulletin
SB-B19-04-
12)
The following symptoms are caused by corrupted EEPROM data in the 480i
addressing area
.
1. Image appears split with a portion repeated on the right 1/3
rd
of the screen
on 480i/tuner/composite sources only. Using 1080i HD sources, the
picture is ok.
2. Image is shifted over to the left and the right 1/3
rd
of the screen has a
black bar on 480i sources.
3. Image has a narrow black bar across the top edge of the screen in 480i
only. 1080i HD is ok.
4. Image appears in a narrow band at the top edge of the screen. Bottom
portion is all black. Switching aspect mode to Zoom Mode will display
picture ok. 1080i HD is also ok.
5. Any loss of picture, distortion, or other symptom affecting only 480i
display.
Symptom #4 Symptom #3 Symptom #2 Symptom #1
Figure 49 - Symptoms
In order to correct these problems, follow the
instructions provided on the Service Bulletin # SB-
B19-04-12.
EEPROM data copy jig
. Order Part # TNPX25JIG.
The factory applied the updated EEPROM data to
production units starting with serial number
YB4550001.
Figure 50 - Test Fixture
110