1-34 (No.YA100)
4.7.2 POWER CIRCUIT [DISPLAY UNIT: PD-50X795]
Item
Measuring
instrument
Test point
Adjustment part
Description
PDP POWER
VOLTAGE
Signal
generator
DC voltmeter
Connector
CN806
Vs
Va
[MAIN
POWER
UNIT]
Vs VR:190V ADJ (
R551
)
Va VR:60V ADJ (
R351
)
[MAIN POWER UNIT]
CAUTION:
• During adjustment operation of PDP POWER
VOLTAGE, don't touch the heat sink of the MAIN
POWER UNIT. If you touch it, electric shock may
be caused.
< When MAIN POWER UNIT is not replaced >
(1) Connect the DC voltmeter to the
CN806
connector and turn on the power. (See Fig.2)
(2) Adjust Vs (190V ADJ) VR and Va (60V ADJ) VR
so that the Vs and Va voltage coincides with the
values in the voltage label.
(3) Input a NTSC all-black signal and check that it
coincides with the values in the voltage label.
(4) Readjust if the adjusted value is different from
those in the voltage label.
NOTE:
• Designed value for the panel is printed on a label
on the upper-left at the back of the PDP. (See
Fig.3)
< When MAIN POWER UNIT is replaced >
CAUTION:
• Before making adjustments, be sure not to turn
on the power when the
CN805
and
CN806
connectors are connected, as this may cause
the PDP to break down.
(1) Disconnect the
CN805
and
CN806
connectors
on the MAIN POWER UNIT.
(2) Connect DC voltmeter to the
CN806
connector
and turn on the power. (See Fig.2)
(3) Adjust Vs (190V ADJ) VR and Va (70V ADJ) VR
so that the Vs and Va voltage coincides with the
values in the voltage label.
(4) Turn off the power, and connect the
CN805
and
CN806
connectors and turn on the power again.
(5) Input a NTSC all-black signal and check that it
coincides with the values in the voltage label.
(6) If the adjusted value is different from those in
the voltage label, fine-tune without unplugging
the connectors.
CAUTION:
• Designated power supply voltage of the panel
(Vs, Va) varies according to the PDP unit.
• Pay careful attention during adjustment, as
any error in procedure may cause the PDP to
break down.
Fig.1
Fig.2
Fig.3
Voltage adjustment VR
MAIN POWER UNIT voltage adjustment point
1. Vs
2. Vs
3. Vs
4. NC
5. GND
6. GND
7. GND
8. GND
9. Va
10. Va
CN806
Vs
R551
Va
R531
1
2
3
4
5
6
7
8
9
10
Vs
Vs
Vs
NC
GND
GND
GND
GND
Va
Va
Va
Vs
CN806
Voltage label
MAIN POWER UNIT
MODEL:PDP50x2xxxx
ALL Voltage:DC5V
Va:xxV Vs:xxxV
Max Watt:xxxW
d u p
a t o
r
Содержание I'Art Palette PD-42X795
Страница 129: ...88 PD 42 50X795 English 88 10 12 04 9 25 26 AM d u p a t o ...
Страница 130: ...89 PD 42 50X795 English 89 10 12 04 9 25 26 AM d u p a t o ...
Страница 132: ...91 Notes PD 42 50X795 English 91 10 12 04 9 25 27 AM d u p a t o ...
Страница 138: ...2 4 No YA100 d u p a t o r ...