Initialization Pulse Adjust - Panasonic TX-P42S10B Service Manual

9.1.2.

Initialization Pulse Adjust

1. Input the White signal to plasma video input.
2. Set the picture controls as follows.
Picture menu : Dynamic
PNR : Min
Aspect : 16:9
3. Connect Oscilloscope to TPSC1 (SC).
Check the voltage (T2) at 100μs period on the down slop.
9.1.3. P.C.B. (Printed 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.
P.C.B.
P Board Vsus
SC Board Vad
SC Board Vscn
A Board White balance and Sub brightness for NTSC, PAL, HD, PC and 625i signals
*See the Panel label.
Caution:
Absolutely do not reduce Vsus below Ve not to damage the P.C.B.
Test point
T2 TPSC1 (SC)
Name Test Point
TPVSUS (SS)
TPVAD (SC)
TPVSCN (SC)
Volume
VR16601 (SC) 250 V ± 10 V
Voltage
Vsus ± 2V
- 195V ± 2V
Vad_base : 148V ± 1V
GND_base : - 47V ± 3V
28
Level
Volume
VR251 (P) *
VR16600 (SC)
VR16841 (SC)
Remarks