11.2. Initialization Pulse Adjust
1. Input the White signal to plasma video input.
2. Set the picture controls as follows.
Picture menu : Vivid
Normal : Set
Aspect : Full
3. Connect Oscilloscope to TPSC1 (SC).
Check that the flat section(T1) is less than 40µs.
Check and adjust that the stand down pulse(T2) period are each within specification.
Test point
Volume
Level
T2
TPSC1 (SC)
VR6602 (SC)
160 ± 10µ Sec
11.3. P.C.B. (Printed Circuit Board) exchange
11.3.1. Caution
1. To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
11.3.2. Quick adjustment after P.C.B. exchange
Adjust the following voltages with the multimeter.
P.C.B.
Name
Test Point
Voltage
Volume
Remarks
P Board
Vsus
TPVSUS (SS)
Vsus ± 2V
VR251 (P)
*
SC Board
Vad
TPVAD (SC)
-90V ± 1V
VR6600 (SC)
SS Board
Ve
TPVE (SS)
Ve ± 1V
VR6000 (SS)
*
D, DG Board
White balance and Sub brightness for NTSC, PAL, HD, PC and 625i signals
*See the Panel label.
Caution:
Absolutely do not reduce Vsus below Ve not to damage the P.C.B.
35
TH-50PZ77U
Summary of Contents for Viera TH-50PZ77U
Page 4: ...1 Applicable signals 4 TH 50PZ77U ...
Page 19: ...8 Location of Lead Wiring 8 1 Lead of Wiring 1 19 TH 50PZ77U ...
Page 20: ...8 2 Lead of Wiring 2 20 TH 50PZ77U ...
Page 21: ...8 3 Lead of Wiring 3 21 TH 50PZ77U ...
Page 22: ...8 4 Lead of Wiring 4 22 TH 50PZ77U ...
Page 23: ...8 5 Lead of Wiring 5 23 TH 50PZ77U ...
Page 24: ...8 6 Lead of Wiring 6 24 TH 50PZ77U ...
Page 25: ...8 7 Lead of Wiring 7 25 TH 50PZ77U ...
Page 29: ...9 4 No Picture 29 TH 50PZ77U ...
Page 36: ...11 4 Adjustment Volume Location 11 5 Test Point Location 36 TH 50PZ77U ...
Page 38: ...38 TH 50PZ77U ...
Page 40: ...40 TH 50PZ77U ...
Page 68: ...TH 50PZ77U 68 ...
Page 69: ...15 1 Schematic Diagram Note 15 Schematic and Block Diagram TH 50PZ77U 69 ...
Page 135: ...16 Exploded Views Replacement Parts List 16 1 Exploded Views 135 TH 50PZ77U ...
Page 136: ...16 2 Packing Exploded Views Accessories 136 TH 50PZ77U ...
Page 137: ...16 3 Packing Explode Views Stand 137 TH 50PZ77U ...
Page 138: ...16 4 Replacement Parts List Notes 138 TH 50PZ77U ...