Ptv Screen Assemblies; B+ Voltages Table - Panasonic PT-47WX52F Service Manual

Label on
lower left corner
(front side)
Labels on
opposite sides
Label on
lower left corner
(rear side)
REAR
Preparation:
Set the following controls
Picture.......................... Normal.
Bright ...........................Normal.
Volume ......................... Min. (0).
Procedure:
1. Apply a white NTSC pattern.
2. Connect the (-) lead of the digital voltmeter to
TPGND1 (cold ground).
3. Connect the (+) lead of the digital voltmeter to each
test point and confirm the B+ voltages (see
Table 4).
Service Manual

PTV screen assemblies

Protective screen
Figure 24. Screen assemblies.

B+ voltages table

Fresnel screen
(note circular ridges)
No. Test point (D-Board)
1 TPD14
2 TPD13
3 TPD12
4 TPD11
5 TPD10
6 C845 (-)
No. Test point (A-Board)
1 TPA031
2 TPA030
Table 4: B+ voltages table
- 22 -
FRONT
Front cabinet
Lenticular screen
(note vertical ridges)
Voltage
138.6 ± 1.0
19.0 ± 1.5
19.0 1.5
±
-19.0 1.5
±
22.0 ± 1.5
-22.5 ± 1.5
Voltage
9.0 0.5
±
5.0 ± 0.5