DOWNLOAD Panasonic TH-42PR11EH Service Manual ↓ Size: 20.33 MB | Pages: 127 in PDF or view online for FREE

Model
TH-42PR11EH
Pages
127
Size
20.33 MB
Type
PDF
Document
Service Manual
Brand
Device
Plasma / GPH11D CHASSIS
File
th-42pr11eh.pdf
Date

Panasonic TH-42PR11EH Service Manual ▷ View online

29
TH-42PR11EH
9 Measurements and Adjustments
9.1.
Adjustment Procedure
9.1.1.
Driver Set-up
9.1.1.1.
Item / Preparation
1. Set Aging pattern (white pattern signal) by IIC mode.
2. Set the picture controls as follows.
Picture menu: Standard
Picture: +25
Aspect: Full
Caution
1. First perform Vsus adjustment.
2. Confirmation of Vscn voltage should be performed after
confirmation of Vad adjustment.
When Vad=-149V, Voltage of Vscn is -4V ±4V.
9.1.1.2.
Adjustments
Adjust driver section voltages. (Refer to the panel data on the
Panel 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
R628 (P)
*
Ve
TPVE (SS)
Ve ± 1V
VR6000 (SS)
*
Vset
TPVSET 
(SC)
320V + 7V, -
9V
Fixed
Vad
TPVAD (SC) -149V ± 1V
VR6600 (SC)
Vscn
TPVSCN 
(SC)
Vad+145V ± 
4V
Fixed
Vda
TPVDA (SS) 75V + 1V, -2V Fixed
PFC
C446 (+)(-)
396V ± 0.5V
R443 (P)
30
TH-42PR11EH
9.1.2.
Initialization Pulse Adjust
1. Set Aging pattern (white pattern signal) by IIC mode.
2. Set the picture controls as follows.
Picture menu: Standard
Picture: +25
Aspect: Full
3. Connect Oscilloscope to TPSC1 and adjust VR6602 for 210 ± 10V.
9.1.3.
P.C.B. (Print Circuit Board) exchange
9.1.3.1.
Caution
1. To remove P.C.B., wait 1 minute after power was off for discharge from electrolysis capacitors.
9.1.3.2.
Quick adjustment after P.C.B. exchange
Adjust the following voltages with the multimeter.
*See the Panel Label.
Caution
Absolutely do not reduce Vsus voltage below Ve not to damage the P.C.B.
Test Point
Volume
Level
TPSC1 (SC)
VR6602 (SC)
210 ± 10V
at 100 
µs 
period on the down slope.
P.C.B.
Name
Test Point
Voltage
Volume
Remarks
P Board
Vsus
TPVSUS (SS)
Vsus ± 2V
R628 (P)
*
PFC
C446 (+) (-) (P)
396V ± 0.5V
R443 (P)
SC Board
Vad
TPVAD (SC)
-149V ± 1V
VR6600 (SC)
SS Board
Ve
TPVE (SS)
Ve ± 1V
VR6000 (SS)
*
D, DS, DN Board
White balance, Pedestal and Sub brightness for NTSC, PAL, HD, PC and 625i signals
DN Board
Set Market Select Number to correct destination by MS mode. (See chap. 6.1.4)
31
TH-42PR11EH
9.1.4.
Adjustment Volume Location
9.1.5.
Test Point Location
32
TH-42PR11EH
9.2.
Adjustment
9.2.1.
RGB white balance adjustment
Instrument Name
Connection
Remarks
• RGB VGA W / B pattern
• Color analyzer
(Minolta CA-100 or equivalent)
PC input
Panel surface
User setting: Normal
(Picture menu: Standard)
Procedure
Remarks
[condition]
• Ensure aging is adequate.
• Make sure the front panel to be used on the final set is fitted. 
• Make sure a color signal is not being shown before adjustment.
• Put the color analyzer where there is little color variation.
1. Set COMPONET / RGB-IN SELECT to RGB.
2. Select the IIC mode “PANEL W / B Adj.” item.
3. Check that the color temperature is “COOL (High)”.
4. Output a white balance pattern.
5. Touch the signal receiver of color analyzer to the highlight window’s center.
6. Fix G drive at E0h and adjust B drive and R drive so x, y become the “Color temperature 
High” in the below table.
7. Increase R / G / B together so the maximum drive value in R / G / B becomes FCh.
8. Set color temperature to “NORMAL (Medium)”.
9. Fix G drive at E0h and adjust B drive and R drive so the highlight window’s x, y becomes 
the “Color temperature Medium” in the below table.
10. Increase R / G / B together so the maximum drive value in R / G / B becomes FCh.
11. Set color temperature to “WARM (Low)”.
12. Set G drive to E0h and adjust B drive and R drive so the highlight window’s x, y become 
the “Color temperature Low” shown in the below table.
13. Increase R / G / B together so the maximum drive value in R / G / B becomes FCh.
14. Copy the R drive, G drive and B drive data in NTSC, PAL DVI region.
Adjustment target
Hi-light: x ± 0.003 y ± 0.003
Hi-light is target of the number at drive adjustment in the hi-light windows.
Therefore, it is not target of the hi-light number at after adjustment white balance.
Picture Menu: Standard
Picture: 25
Aspect: Full
Position and size: Normal
• Highlight section Signal amplitude 75%
• Cutoff standard G: 80h
• Drive standard G: E0h
Page of 127
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