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5.2
Adjustments, English
Adjustments after replacing PCBs in the plasma panel
Power Supply (P1/3)
Scan drive (SC)
Sustain drive (SS)
Adjustments after replacing the lower electrical chassis
To remove PCBs, wait 1 minute after disconnecting from the mains for discharge
of the electolytic capacitors.
Set the plasma panel to receive a picture.
Note! If a plasma panel is displaying a non-moving picture for more than
approx. 30 minutes the picture will be burnt into the plasma screen.
For adjustments use a multi meter in DC position. Connect the black measuring
wire to the chassis on the plasma panel if nothing else mentioned.
On the chassis there is a small label where the adjustment voltages for Vsus, Ve,
Vbk and Vad are written.
For adjustment and test point location please see page 5.61.
Use a non conductive tool for adjustment.
Connect the red wire from the DC meter to TPVsus and adjust R625 to the Vsus
value written on the label ±1 V.
Connect the red wire from the DC meter to TPVbk and adjust R498 to the Vbk
value written on the label ±1 V.
Connect the red wire from the DC meter to TPVda and adjust R519 to 67 V ±1 V.
Connect the red wire from the DC meter to connector P4 pin 1 and the black wire
to P4 pin 3. Adjust R426 to 400 V ±1 V.
Connect the red wire from the DC meter to TPVad and adjust R6477 (is called
R477 in the printing) to the Vad value written on the label ±1 V.
Connect the red wire from the DC meter to TPVe and adjust R6774 to the Ve
value written on the label ±1 V.
Important!
When replacing the lower electrical chassis including PCB6, Main Microcomputer,
to avoid loss of data the old EEPROM 6IC6 must be moved to the new PCB6.
At the shield of PCB6 there is a small label where the adjustment values for Rdr,
Gdr, Bdr, Bri, Con and COLOF are written. These values must be written into the
old EEPROM. See
1.
This is done in Service Mode.
Enter the Service Menu by pressing MENU on Beo4, select SETUP and press GO.
Then press 0 0 GO on Beo4 within 3 seconds and the Service Menu appears.
Select the Monitor line and press GO. Now the Monitor service menu appears.
Select the Picture adjustments line in the Monitor service menu and press GO.
Select picture adjustments with a digit, 1 to 5 and 12 (Rdr, Gdr, Bdr, Bri, Con and
COLOF) and adjust by pressing
to store after each adjustment.
m
p
or
to the value written on the label. Press GO
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