PDP-505HD
75
Procedure
Adjusting Item
Input signal
Adjusting Point
Adjusting Method
VR201 (VSUS)
MAIN POWER ASSY
VR301 (VADR)
MAIN POWER ASSY
VR111 (STB5V)
MAIN POWER ASSY
VR356 (+14V)
MAIN POWER ASSY
VSUS (Sustain voltage) adjustment
Adjust so that the voltage between TP201(VSUS) and TP202 (SUS
GND) becomes ±1V of the voltage indicated at the "voltage indication
label".
The symptom in case of mis-adjustment
If the VSUS adjustment is not performed properly, dots like blinking
luminance points appear. If deviated greatly from the right adjustment
point, Panel will stop lighting.
VADR (Address voltage) adjustment
Adjust so that the voltage between TP301(VADR) and TP302 (ADR
GND) becomes "59V±0.5V".
The symptom in case of mis-adjustment
If the VADR adjustment is not performed properly, dots like blinking
luminance points appear. If deviated greatly from the right
adjustment point, Panel will light white.
STB5V adjustment
Adjust so that the voltage between TP111(STB5V) and TP113(STB
GND) becomes "+5V ± 0.1V".
+14V adjustment
Adjust so that the voltage between TP355(+14V) and TP356
(AGND) becomes "+14V ± 0.1V".
White 100%
signal
VSUS/VADR/
STB5V/+14V
Voltage adjustment
Note) Be sure to measure between specified test points.
VSUS UVP/+B
Voltage adjustment
VR401 (VSUS UVP)
MAIN POWER ASSY
VR131 (+B)
MAIN POWER ASSY
VSUS UVP adjustment
Adjust so that the voltage between TP404 (V1) and TP405 (V2)
becomes "0V ± 10mV".
+B Voltage adjustment
Adjust so that the voltage between TP131 (+B) and TP132 (P. GND)
becomes "+380V ± 1.0V".
White 100%
signal
Note) Normally, these adjustments are not needed in repair service. Adjust them only when VR is rotated by mistake
and it needs to be re-adjusted.
Moreover, be sure to measure between specified test points in adjustment.
VR552 (5V)
DIGITAL VIDEO
ASSY
VR602 (3.3V)
DIGITAL
VIDEOASSY
+5V adjustment
Adjust so that the voltage between TP553 (5V) and TP554 (DGND)
becomes "+5V ± 0.05V".
+3.3V adjustment
Adjust so that the voltage between TP601 (3.3V) and TP602 (DGND)
becomes "3.3V ± 0.05V".
5V/3.3V
Voltage adjustment
Note) Be sure to use a non-metallic screw driver such as a ceramic screw driver in the adjustment.
If a metallic screw driver is used, DC/DC converter may operate wrongly.
Moreover, be sure to measure between specified test points.
Any input signal
3
4
5
Содержание PDP-505HD
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Страница 46: ...PDP 505HD 46 A B C D 1 2 3 4 1 2 3 4 3 11 OVERALL CONNECTION DIAGRAM 1 2 ADX2643 ...
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Страница 48: ...PDP 505HD 48 A B C D 1 2 3 4 1 2 3 4 3 12 OVERALL CONNECTION DIAGRAM 2 2 L0006 ATX1041 L0007 ATX1041 ...
Страница 49: ...PDP 505HD 49 A B C D 5 6 7 8 5 6 7 8 ADX2643 ADX2643 ADX2643 ADX2643 ...
Страница 51: ...PDP 505HD 51 A B C D 5 6 7 8 5 6 7 8 AUTO ZOOM BLOCK ...