Panasonic TX-PR37X10, Service Manual

Page: 24 / 132

8.1.2. Initialization Pulse Adjust
1. Input the W hite signal to plasma video input.
2. Set the picture controls as follows.
Picture menu : Dynamic
PNR : Min
A spect : 16:9
3. Connect Oscilloscope to TPSC1 (SC).
Check the voltage (T2) at 100|is period on the down slop.
Test point Volume Level
T2 TPSC1 (SC) VR16601 (SC) 210 V ± 10 V
TPSC1
2007/12/67 16:39:19 f l l I fliook ймд
Shopped ъ _____ _________ 5O0MS/S 20MS/dlu
1
U ------I-----
100 Ц s
—
1
CHI 100:1
50.0 U/diM
DC
Full
'
\ Г
l
"
h10V
Edge CHI
Auto
400.0 U
i
i
1'2 = 210Vd
i
!
1
>
XI 20.000US Y1 343.880U
X2 120.000US Y2 93.6523U
dX 10O.000US dY -250.Z28U
1/dX 10.00000kHZ
V ______________________________________________________________________________________________________________________
J
8.1.3. P.C.B. (Printed Circuit Board) exchange
8.1.3.1. Caution
1. To remove P.C.B., wait 1 minute after power was off for discharge from electrolysis capacitors.
8.1.3.2. Quick adjustment after P.C.B. exchange
Adjust the following voltages with the multimeter.
P.C.B. Name Test Point Voltage Volume Remarks
P Board Vsus TPVSUS (SS) Vsus ± 2V R737 (P)
*
SC Board Vad TPVAD (SC) -180V ± 2V VR16600 (SC)
A Board W hite balance and Su b brightness for NTSC, PAL, HD, PC and 625 i signals
*See the Panel label.
Caution:
Absolutely do not reduce Vsus below Ve not to damage the P.C.B.
24