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 and adjust that the stand down pulse(T2) period are each within specification.
Test point
Volume
Level
T2
TPSC1 (SC)
VR6602 (SC)
185 ± 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)
-105V ± 1V
VR6600 (SC)
Vbk
TPVBK (SC)
155V ± 1V
VR6604 (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.
32
TH-50PX77U / TH-50PE77U
Содержание TH-50PC77U
Страница 5: ...1 Applicable signals 4 TH 50PX77U TH 50PE77U ...
Страница 18: ...8 Location of Lead Wiring 8 1 Lead of Wiring 1 17 TH 50PX77U TH 50PE77U ...
Страница 19: ...8 2 Lead of Wiring 2 18 TH 50PX77U TH 50PE77U ...
Страница 20: ...8 3 Lead of Wiring 3 19 TH 50PX77U TH 50PE77U ...
Страница 21: ...8 4 Lead of Wiring 4 20 TH 50PX77U TH 50PE77U ...
Страница 22: ...8 5 Lead of Wiring 5 21 TH 50PX77U TH 50PE77U ...
Страница 23: ...8 6 Lead of Wiring 6 22 TH 50PX77U TH 50PE77U ...
Страница 27: ...9 4 No Picture 26 TH 50PX77U TH 50PE77U ...
Страница 34: ...11 4 Adjustment Volume Location 11 5 Test Point Location 33 TH 50PX77U TH 50PE77U ...
Страница 36: ...35 TH 50PX77U TH 50PE77U ...
Страница 86: ...NOTE TH 50PX77U TH 50PE77U 106 ...
Страница 87: ...16 Exploded Views Replacement Parts List 16 1 Exploded Views 107 TH 50PX77U TH 50PE77U ...
Страница 88: ...16 2 Packing Exploded Views Accessories box 108 TH 50PX77U TH 50PE77U ...
Страница 89: ...16 3 Replacement Parts List Notes 109 TH 50PX77U TH 50PE77U ...