Diagnosis By Test Pattern When Osd Is Available; Diagnosis By Removing The D5 Connector - Panasonic TH-37PX60U Technical Manual

Diagnosis by Test Pattern When OSD is Available

<Purpose>
Picture problem such as "Picture Noise and or Vertical Line" displayed all over the screen is mainly caused
by a defective D or DG board. The "internal Test Pattern Generator" can help determine whether to replace the D
or DG board. The test patterns are created by the D board. Follow the steps below to confirm the operation of the
D or DG boards.
<Model>
All Models
<Symptom>
Picture Noise, Full Vertical Line
<Diagnosis>
Pattern Defective Board
Abnormal D Board
Normal DG Board (or D board)
<How to enter the Test Pattern>
1. While pressing "VOLUME-" button of the TV set,
press "RECALL" button of the remote control three
times within 2 seconds.
2. Push button "1" of the Remote Control several times
to select the "OPTION" setting.
3. Press the "OK" button of the Remote control for three
seconds or more to display the test pattern.
4. To display a specific pattern, press the OK button.

Diagnosis by Removing the D5 Connector

<Purpose>
Symptom such as "No picture, No OSD, Sound OK" is mainly caused by a defective DG or D board. The internal
pattern generator cannot be accessed due to the loss of OSD. This method makes it possible to determine
whether the DG board or the D (SC,SS) is defective.
<Model>
2006 Models ONLY
<Symptom>
No picture (Sound OK)
<Diagnosis>
Power ON after removing D5 Connector
Pattern Defective Board
White Picture DG Board (D board)
No Picture D board (SC or SS)
<Block Diagram and Explanation>
1. This white pattern is generated by IC9900 on D board.
2. When the unit is turned on after disconnecting connector D5, a white picture is provided to the panel drive circuit.
If the panel drive section of the unit is ok, a white picture is automatically displayed by the PDP.
DG
IC1103
MICRO
PROCESSOR
IC4037
LVDS
DG
GC5
TRANS
5
MITTER
D
IC9500
PICTURE
OUTPUT
LVDS
LVDS
D
RECEIVER
5
<Test Pattern (Normal)>
White (by DG) White (by D)
Ramp white
Ramp red
Scroll A and B zone
<Test Pattern (Abnormal)>
Example Picture
37
<Position of D5 Connector>
DG5
IC9900
PLASMA AI S.F. PROCESSOR
White Picture
38
Red Green
on/off Aging
Blue
Ramp blue
Ramp green
Color bar 1% window
VIDEO DATA
DATA
DRIVER
To C Board