Initialization Pulse Adjust; Printed Circuit Board) Exchange - Panasonic TH-42PZ77U Service Manual

TH-42PZ77U

11.2. Initialization Pulse Adjust

1. Input the White signal to plasma video input.
2. Set the picture controls as follows.
Picture menu : Vivid
Normal : Set
Aspect : Full
3. Connect Oscilloscope to TPSC1 (SC).
Check and adjust that the stand down pulse(T2) period are each within specification.
11.3. P.C.B. (Printed Circuit Board) exchange
11.3.1. Caution
1. To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
11.3.2. Quick adjustment after P.C.B. exchange
Adjust the following voltages with the multimeter.
P.C.B.
P Board
SC Board
SS Board
D, DG Board
*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
Vsus TPVSUS (SS)
Vad TPVAD (SC)
Vscn TPVSCN (SC)
Ve TPVE (SS)
White balance and Sub brightness for NTSC, PAL, HD, PC and 625i signals
Volume
VR6602 (SC) 250 ± 10µ Sec
Voltage
Vsus ± 2V VR251 (P)
-140V ± 1V VR6600 (SC)
Vad + 148V ± 1V VR6841 (SC)
Ve ± 1V VR6000 (SS)
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Level
Volume Remarks
*
*