Panasonic TX-PR37C10 Service Manual ▷ View online
25
8.1.2.
Initialization Pulse Adjust
1. Input the White signal to plasma video input.
2. Set the picture controls as follows.
2. Set the picture controls as follows.
Picture menu : Dynamic
PNR : Min
Aspect : 16:9
PNR : Min
Aspect : 16:9
3. Connect Oscilloscope to TPSC1 (SC).
Check the voltage (T2) at 100
μs period on the down slop.
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.
*See the Panel label.
Caution:
Caution:
Absolutely do not reduce Vsus below Ve not to damage the P.C.B.
Test point
Volume
Level
T2
TPSC1 (SC)
VR16601 (SC)
210 V ± 10 V
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
White balance and Sub brightness for NTSC, PAL, HD, PC and 625i signals
26
8.1.4.
Adjustment Volume Location
8.1.5.
Test Point Location
27
8.2.
Adjustment
8.2.1.
Sub-Contrast adjustment
Name of measuring instrument
Connection
Remarks
RF generator
Base Band signal generator
HD signal generator
Base Band signal generator
HD signal generator
Steps
Remarks
Adjustment of TV (RF system)
Note:
In adjustment, you must setting to modulation of signal at 85%.
1. Receive a RF PAL 100% Full White or Split Colour bar shown as below.
2. Goes into service adjustment mode.
3. Push a [ 1 ] or [ 2 ] key, and goes into adjustment mode for [ CONTRAST ].
3. Push a [ 1 ] or [ 2 ] key, and goes into adjustment mode for [ CONTRAST ].
Adjustment
1. The colour key yellow button of remote control is pushed.
2. The OSD character of sub-contrast becomes red.
2. The OSD character of sub-contrast becomes red.
(Inside under automatic adjustment)
3. The OSD character of sub-contrast returns to black.
4. End.
4. End.
Ref.:
RF signal modulation spec.
UK models: 80%
Other models: 90%
UK models: 80%
Other models: 90%
Note:
Sub-contrast adjustment is unadjusted
for AV/ HD input.
But, when needing the adjustment cho-
sen manually, please refer to [ alterna-
tive method ].
for AV/ HD input.
But, when needing the adjustment cho-
sen manually, please refer to [ alterna-
tive method ].
28
Steps
Remarks
Another procedure
Adjustment of AV system
1. PAL 100% Full White or Split Colour bar receive AV1(or AV2), shown as below.
2. Goes into service adjustment mode.
3. Push [ 1 ] or [ 2 ] key, and goes into adjustment mode for [ Contrast ].
3. Push [ 1 ] or [ 2 ] key, and goes into adjustment mode for [ Contrast ].
Adjustment
1. The colour key yellow button of remote control is pushed.
2. The OSD character of sub-contrast becomes red.
2. The OSD character of sub-contrast becomes red.
(Inside under automatic adjustment)
3. The OSD character of sub-contrast returns to black.
4. End.
4. End.
Steps
Remarks
Another procedure
Adjustment of HD system
1. At 1080i 100% Full White or Split colour bar receive component signal, as shown below.
2. Goes into service adjustment mode.
3. Push [ 1 ] or [ 2 ] key, and goes into adjustment mode for [ Contrast ].
3. Push [ 1 ] or [ 2 ] key, and goes into adjustment mode for [ Contrast ].
Adjustment
1. The colour key yellow button of remote control is pushed.
2. The OSD character of sub-contrast becomes red.
2. The OSD character of sub-contrast becomes red.
(Inside under automatic adjustment)
3. The OSD character of sub-contrast returns to black.
4. End.
4. End.
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