- 22 -
Service Manual
PTV screen assemblies
Figure 24. Screen assemblies.
B+ voltages table
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).
FRONT
REAR
Protective screen
Fresnel screen
Lenticular screen
Front cabinet
(note vertical ridges)
(note circular ridges)
Label on
lower left corner
(rear side)
Label on
lower left corner
(front side)
Labels on
opposite sides
No.
Test point (D-Board)
Voltage
1
TPD14
138.6
±
1.0
2
TPD13
19.0
±
1.5
3
TPD12
19.0
±
1.5
4
TPD11
-19.0
±
1.5
5
TPD10
22.0
±
1.5
6
C845 (-)
-22.5
±
1.5
No.
Test point (A-Board)
Voltage
1
TPA031
9.0
±
0.5
2
TPA030
5.0
±
0.5
Table 4: B+ voltages table
Summary of Contents for PT47WX52F - 47" PROJECTION TV HD
Page 65: ... 65 Notes PARTS LIST ...
Page 66: ... 66 D Board Schematic ...
Page 67: ... 67 D Board Schematic ...
Page 68: ... 68 D Board Schematic ...
Page 69: ... 69 Jumper between pin 7 and pin 1 D Board Schematic ...
Page 70: ... 70 D Board Schematic ...
Page 71: ... 71 D Board Schematic ...
Page 73: ... 73 NOTES NOTES ...
Page 74: ... 74 D Board Layout ...
Page 75: ... 75 D Board Layout ...
Page 76: ... 76 A Board Schematic ...
Page 77: ... 77 A Board Schematic ...
Page 78: ... 78 A Board Schematic ...
Page 79: ... 79 A Board Schematic ...
Page 80: ... 80 A Board Schematic ...
Page 81: ... 81 A Board Schematic ...
Page 82: ... 82 A Board Schematic ...
Page 83: ... 83 A Board Schematic ...
Page 84: ... 84 Board section Top A Board Layout Top left portion ...
Page 85: ... 85 Board section Top A Board Layout Top right portion ...
Page 86: ... 86 Board section Top A Board Layout Bottom left portion ...
Page 87: ... 87 Board section Top A Board Layout Bottom right portion ...
Page 88: ... 88 Board section Bottom side A Board Layout Top left portion ...
Page 89: ... 89 Board section Bottom A Board Layout Top right portion ...
Page 90: ... 90 Board section Bottom A Board Layout Bottom left portion ...
Page 91: ... 91 Board section Bottom A Board Layout Bottom right portion ...
Page 92: ... 92 LG Board schematic TNP2AA112 LG Board schematic ...
Page 94: ... 94 LR Board schematic TNP2AA111 LR Board schematic ...
Page 96: ... 96 LB Board schematic TNP2AA110 LB Board schematic ...
Page 98: ... 98 K Board schematic TNP2AA089 K Board layout TNP2AA089 K Board schematic and layout ...
Page 99: ... 99 G Board schematic TNP2AA090 G Board layout TNP2AA090 G Board schematic and layout ...
Page 104: ...Printed in USA K02042127PL0429 ...