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KD-34XBR2
Is RHT
Changed?
Is D-Board
Replaced?
Replace RV8001 and RV8002 with the same value:
HV project adjust and inspection
1. Turn RV8001 fully counter-clockwise.
2. Turn set on with black video signal then adjust
RV8002 slowly to obtain
34.8 kV.
3. Adjust RV8001 clockwise slowly until hold down
protect just activates.
4. Adjust RV8002 clockwise, then turn the set on.
Change video to white field then slowly turn RV8002
counter-clockwise to get 34.8 ± 0.2kv. Confirm set
does NOT TURN OFF at this condition. If yes, then
repeat from step 1 again.
5. Finally, set back RV8002 to 31.50kv + 0.2kv at video
cut off (black video).
Start
No
Yes
Change any
or
marked parts
Yes
No
Yes
No
Yes
Is +B, Vd and
hold down
confirmed?
Finish for
hold-down
check
Start from
the beginning.
CB, Vd and check hold-down on the D board
video with no signal (standard reset mode) as follows:
1. CB across C6544 to make sure that it is
135.3 ± 1 Vdc.
2. Confirm Vd at pin 2 CN6506 or at TP-Vd for 4.3V <
Vd < 4.65 Vdc.
3. Apply 5.5 + 0.5 Vdc at pin 2 of CN6506, then confirm
that set holds down.
If all adjustments are complete, then seal and secure
RV8001 and RV8002 with epoxy to prevent any possible
misadjustment by non-trained technical service.
SECTION 9: SAFETY RELATED ADJUSTMENTS
X
RV8001, RV8002 CONFIRMATION METHOD AND HV SERVICE ADJUSTMENTS
HV SERVICE FLOWCHART
B+ MAX CONFIRMATION
Standard ............................................................................ 135.3 ± 1 VDC
Check Condition:
AC input voltage: ........... 120 (± 2) VAC at Board Adjustment Process
................................................ 130 (± 2) VAC at QC
... 120 (± 2) VAC at Overall Adjustment (after aging)
Note: If using a stabilized power supply, make sure that the
distortion factor is 3% or less.
Setting mode: ............................................................................ Full mode
Signal input:.................................................. Cross-hatch of NTSC at QC
Initial setting:...........................................................Reset condition at QC
Confi rm point: .........................................Across C6544 for B+ of D Board
Содержание KD-34XBR2 - 34" Hdtv Fd Trinitron Wega
Страница 187: ...L504 FB502 LB2016 OUH 1608 MAIN_COMB_C MAIN_COMB_Y TO P2 TO P2 3D COMB AV SW 9 965 916 02 HA3 B P3 C ...
Страница 207: ...9 965 916 02 HA3 QI P1 ...
Страница 223: ...7016 0UH 4A 9 965 916 02 HA3 QM P1 ...
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