Panasonic TH-85VX200W Service Manual ▷ View online
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TH-85VX200W
10.1.2. Initialization Pulse Adjust
1. Set Aging pattern (white pattern signal) by IIC mode.
2. Set the picture controls as follows.
2. Set the picture controls as follows.
Picture menu: Standard
Picture: +25
Aspect: Full
Picture: +25
Aspect: Full
3. Connect Oscilloscope to TPSC1 and adjust VR16601 for 125V ± 5V.
Test Point
Volume
Level
TPSC1 (SC)
VR16601 (SC)
125V ± 5V
at 50
at 50
µs
period on the down slope.
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TH-85VX200W
10.1.3. P.C.B. (Print Circuit Board) and Plasma Display Panel exchange
10.1.3.1. Quick adjustment after P.C.B. and Panel exchange
1. To remove P.C.B., wait 10 minute after power was off for discharge from electrolysis capacitors.
10.1.3.2. Quick adjustment after P.C.B. exchange
Adjust the following voltages with the multimeter.
*See the Panel Label.
**See chap. 10.1.6.
***See chap. 10.1.7.1.
**See chap. 10.1.6.
***See chap. 10.1.7.1.
10.1.3.3. Quick adjustment after Plasma Display Panel exchange
Adjust the following voltages with the multimeter.
*See the Panel Label.
10.1.4. Vsus adjustment
After exchange P board or Plasma Display Panel, see the Panel Label and check TPVSUS and adjust the volume.
10.1.5. Vad adjustment
After exchange SC board, check TP9 and adjust the volume.
10.1.6. Ve adjustment
1. After exchange SS board, connect the multimeter to the testpoint TPVE(SS).
2. Select Ve Mode by IIC mode. (See chap. 6.1.1., and 6.2.)
2. Select Ve Mode by IIC mode. (See chap. 6.1.1., and 6.2.)
P.C.B.
Name
Test Point
Voltage
Volume
Remarks
P Board (Main_1)
Vsus
TPVSUS (SC)
Vsus ± 2V
VR251 (P_Main_1)
*
Vda
TP9 (P_Main_1)
70V +1V, -2V
Fixed
P Board (Main_2)
Vsus
TPVSUS (SS)
Vsus ± 2V
VR251 (P_Main_2)
*
Vda
TP9 (P_Main_2)
70V +1V, -2V
Fixed
SC Board
Vad
TPVAD (SC)
-135V ± 1V
VR16600 (SC)
Vscn
TPVSCN (SC)
Vad_base:+145V±4V
GND_base: +10V±6V
GND_base: +10V±6V
Fixed
SS Board
Ve**
TPVE (SS)
Ve ± 1V
VR16001 (SS)
*
D, DS Board
White balance and Sub brightness for NTSC, PAL, HD, PC and 625i signals
A Board
Set Market Select Number to correct destination by MS mode. (See chap. 6.1.4)
D, A Board
Set Ve Mode until bright points disappears by IIC mode.
***
Name
Test Point
Voltage
Volume
Remarks
Vsus (SC Side)
TPVSUS (SC)
Vsus ± 2V
VR251 (P_Main_1)
*
Vsus(SS Side)
TPVSUS (SS)
Vsus ± 2V
VR251 (P_Main_2)
*
Ve Life
Check Ve Mode. (See chap. 10.1.7.2.)
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TH-85VX200W
3. Check that the Ve Mode is set to 4.
4. Press RETURN button and then select and display Ve Init.
5. Check TPVE and adjust the volume.
6. Exit the IIC mode.
6. Exit the IIC mode.
10.1.7. Ve Life adjustment
10.1.7.1. After exchange both D board and A board
1. Select Ve Mode by IIC mode. (See chap. 10.1.6.)
2. Check that no bright points appears on the display.
3. If bright points appears, change Ve Mode until bright points disappears.
4. Exit the IIC mode.
2. Check that no bright points appears on the display.
3. If bright points appears, change Ve Mode until bright points disappears.
4. Exit the IIC mode.
Note: If bright/ nolit points still appears, set Ve Mode to 4.
10.1.7.2. After exchange Plasma Display Panel
1. Select Ve Mode by IIC mode. (See chap. 10.1.6.)
2. Check that the Ve Mode is set to 4.
3. Check that no bright/nolit points appears on the display.
4. Exit the IIC mode.
2. Check that the Ve Mode is set to 4.
3. Check that no bright/nolit points appears on the display.
4. Exit the IIC mode.
10.1.8. Bright or Nolit appears on the display
1. Select Ve Mode by IIC mode. (See chap. 10.1.6.)
2. Check and remember the value of Ve Mode.
3. If bright points appears, change Ve Mode lower until bright points disappears.
4. If nolit points appears, change Ve Mode upper until nolit points disappears.
5. Check that no bright/nolit points appears on the display, then exit the IIC mode.
2. Check and remember the value of Ve Mode.
3. If bright points appears, change Ve Mode lower until bright points disappears.
4. If nolit points appears, change Ve Mode upper until nolit points disappears.
5. Check that no bright/nolit points appears on the display, then exit the IIC mode.
Note: If bright / nolit points still appears, set back Ve Mode to the value you remembered above.
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TH-85VX200W
10.1.9. Adjustment Volume Location
10.1.10. Test Point Location
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