DOWNLOAD Panasonic TH-42PY8PA / TH-42PZ8BA / TH-42PZ8EA Service Manual ↓ Size: 21.66 MB | Pages: 127 in PDF or view online for FREE

Model
TH-42PY8PA TH-42PZ8BA TH-42PZ8EA
Pages
127
Size
21.66 MB
Type
PDF
Document
Service Manual
Brand
Device
Plasma / GPH11DE CHASSIS
File
th-42py8pa-th-42pz8ba-th-42pz8ea.pdf
Date
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Panasonic TH-42PY8PA / TH-42PZ8BA / TH-42PZ8EA Service Manual ▷ View online

25
8 Measurements and Adjustments
8.1.
Adjustment Procedure
8.1.1.
Driver Set-up
8.1.1.1.
Item / Preparation
1. Input a white signal to plasma video input.
2. Set the picture controls as follows.
Picture menu: Dynamic
PNR: OFF
Aspect: 16:9
Caution
1. First perform Vsus adjustment.
2. Confirmation of Vscn voltage should be performed after
confirmation of Vad adjustment.
When Vad= -140V, Voltage of Vscn is 8V ±1V.
8.1.1.2.
Adjustments
Adjust driver section voltages referring the panel data on the
panel data label.
Check or adjust the following voltages with the multimeter.
*See the Panel label.
Name
Test Point
Voltage
Volume
Remarks
Vsus
TPVSUS
(SS)
Vsus ± 2V
VR251 (P)
*
Ve
TPVE (SS)
Ve ± 1V
VR16000
(SS)
*
Vset
TPVSET
(SC)
330V + 7V, -9V Fixed
Vad
TPVAD (SC) -140V ± 1V
VR16600
(SC)
Vscn
TPVSCN
(SC)
Vad+148V ± 1V Fixed
Vda
TPVDA (SS) 75V + 1V, -2V
Fixed
26
8.1.2.
Initialization Pulse Adjust 
1. Input the White signal to plasma video input.
2. Set the picture controls as follows.
Picture menu : Dynamic
PNR: OFF
Aspect : 16:9
3. Connect Oscilloscope to TPSC1 (SC).
Check the voltage (T2) at 100 us period on the down slop.
8.1.3.
P.C.B. (Printed Circuit Board) exchange
8.1.3.1.
Caution
1. To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
8.1.3.2.
Quick adjustment after P.C.B. exchange
Adjust the following voltages with the multimeter.
*See the Panel label.
Caution: 
Absolutely do not reduce Vsus below Ve not to damage the P.C.B.
Test point
Volume
Level
T2
TPSC1 (SC)
VR16602 (SC)
250 V ± 10 V
P.C.B.
Name
Test Point
Voltage
Volume
Remarks
P Board
Vsus
TPVSUS (SS)
Vsus ± 2V
VR251 (P)
*
SC Board
Vad
TPVAD (SC)
-140V ± 1V
VR16600 (SC)
SS Board
Ve
TPVE (SS)
Ve ± 1V
VR16000 (SS)
*
27
8.1.4.
Adjustment Volume Location
8.1.5.
Test Point Location
28
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