Panasonic TH-50PHD8BK / TH-50PHD8BS / TH-50PHD8EK / TH-50PHD8ES Service Manual ▷ View online
8 Location of Lead Wiring
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TH-50PHD8BK / TH-50PHD8BS / TH-50PHD8EK / TH-50PHD8ES
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TH-50PHD8BK / TH-50PHD8BS / TH-50PHD8EK / TH-50PHD8ES
9 Adjustment Procedure
9.1. Driver Set-up
9.1.1. Item / Preparation
1. Input a white signal of the RGB signal generator.
2. Set the picture adjustment items as follows.
2. Set the picture adjustment items as follows.
·
Picture menu : Standard
·
Color temperature : Normal
·
Picture : 25
·
Aspect : Full
9.1.2. Adjustments
Adjust driver section voltages referring the panel data on the panel data label.
Caution
1. First perform Vsus voltage adjustment.
2. Confirmation of Vscn voltage should be performed after confirmation of Vad voltage adjustment.
2. Confirmation of Vscn voltage should be performed after confirmation of Vad voltage adjustment.
When Vad = -90V, Voltage of Vscn is 40V ± 4V.
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TH-50PHD8BK / TH-50PHD8BS / TH-50PHD8EK / TH-50PHD8ES
9.2. Initialization Pulse Adjust
1. Input a white signal to plasma video input.
2. Set the picture adjustment items as follows.
2. Set the picture adjustment items as follows.
·
Picture menu : Standard
·
Color temperature : Normal
·
Picture : 25
·
Aspect : Full
3. Connect Oscilloscope to TPSC1 (T1) and check for 20 ± 15µ Sec.
4. Connect Oscilloscope to TPSC1 (T2) and adjust VR6602 for 155 ± 10µ Sec.
4. Connect Oscilloscope to TPSC1 (T2) and adjust VR6602 for 155 ± 10µ Sec.
Test point
Volume
Level
T1
TPSC1 (SC)
Fixed
20 ± 15µ Sec
T2
TPSS1 (SS)
VR6602(SC)
155 ± 10µ Sec
9.3. P.C.B. (Printed Circuit Board) Remove
9.3.1. Caution
1. To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
9.3.2. Quick adjustment after P.C.B. Remove
P.C.B.
Name
Test Point
Voltage
Volume
Remarks
P Board
Vsus
TPVSUS
176V ± 2V
VR351 (P)
*
SC Board
Vad
TPVAD
-90V ± 1V
VR6801 (SC)
Vscn
TPVSCN
Vad+ 130V ± 4V
Fixed
Vset
TPVSET
225V ± 7V
Fixed
SS Board
Ve
TPVE
150V ± 1V
VR6250 (SS)
*
Vda
TPVDA
75V ± 1V
Fixed
D, J Board
White balance, Pedestal and Sub brightness for NTSC, PAL, HD, PC and 625i signals
*See the Panel label.
Caution:
Caution:
Absolutely do not reduce Vsus below Ve not to damage the P.C.B.
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TH-50PHD8BK / TH-50PHD8BS / TH-50PHD8EK / TH-50PHD8ES
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