Panasonic TH-42PV500AA / TH-42PV500BA / TH-42PV500EA / TH-42PV500RA / TH-42PV500YA Simplified Service Manual ▷ View online
3.2. Initialization Pulse Adjust
1. Input the White signal to plasma video input.
2. Set the picture controls as follows.
·
Picture menu: Standard
·
Color temperature : Middle
·
Picture : 25
3. Connect Oscilloscope to TPSC1 (T1) and check for 15±10µ Sec.
4. Connect Oscilloscope to TPSC1 (T2) and adjust R6557 for 184+5µ /-10µ Sec.
Test point
Volume
Level
T1
TPSC1 (SC)
---
15 ± 10µ Sec
T2
TPSC1 (SC)
R6557 (SC)
184 + 5µ / - 10µ Sec
5
TH-42PV500AA / TH-42PV500BA / TH-42PV500EA / TH-42PV500RA / TH-42PV500YA
3.3. P.C.B. (Printed Circuit Board) exchange
3.3.1. Caution
1. To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
3.3.2. Quick adjustment after P.C.B. exchange
P.C.B.
Name
Test Point
Voltage
Volume
Remarks
P Board
Vsus
TPVSUS (SS)
Vsus ± 2V
VR351 (P)
*
Vda
TPVDA (SS)
70V ± 1V
VR352 (P)
PFC
C446 (+) (-) (P)
395V ± 0.5V
R443 (P)
Vlow
C555 (+) (-) (P)
73V ± 0.1V
R661 (P)
Vda load current : 0.4A
Csus
TPVSUS (SS)
178V ± 0.5V
R671 (P)
Vsus load current : 1.7A
SC Board
Vad
TPVAD (SC)
-105V ± 1V
VR6477 (SC)
SS Board
Ve
TPVE (SS)
Ve ± 2V
VR6145 (SS)
*
D, DG Board
White blance, Pedestal 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.
3.4. Adjustment Volume Location
6
TH-42PV500AA / TH-42PV500BA / TH-42PV500EA / TH-42PV500RA / TH-42PV500YA
3.5. Test Point Location
7
TH-42PV500AA / TH-42PV500BA / TH-42PV500EA / TH-42PV500RA / TH-42PV500YA
8
TH-42PV500AA / TH-42PV500BA / TH-42PV500EA / TH-42PV500RA / TH-42PV500YA
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