Safety Related Adjustments; B+ Max Confirmation; Hv Service Flowchart; Rv8001, 8002, 8003 Confirmation Method And Hv Service Adjustments - Sony Trinitron KV-32XBR400 Service Manual

RV8001, RV8002, RV8003 CONFIRMATION METHOD AND HV SERVICE ADJUSTMENTS

B+ Max Confirmation:

Standard: 135.3 + 1 VCD
Check Condition: AC input voltage : 120 (± 2) VAC at Board Adjustment Process
*Note: If using stabilized power supply, make sure the distortion factor is 3% or less.

HV Service Flowchart

Replace RV8001, RV8002 and RV8003 with the same value:
HV project adjust and inspection
1. Turn RV8001 and RV8003 fully counter-clockwise.
2. Turn set on with black video signal then adjust RV8002 slowly to obtain
35.5kv.
3. Adjust RV8001 clockwise slowly until hold how protection just activiates,
then turn set off. Turn back RV8001 about 1/16 turn, then turn set back
on.
4. Turn RV8003 (fine adjust) slowly clockwise until hold down protect just
activates. Then turn the set off.
5. Adjust RV8002 clockwise, then turn the set on. Change video to white
field then slowly turn RV8002 counter-clockwise to get 35.0 = 0.2kv.
Confirm set does NOT TURN OFF at this condition. If yes, then repeat
from step 1 again.
6. Finally, set back RV8002 to 31.50kv + 0.2kv at video cut off (black video).
If all adjustments are complete, then seal and secure RV8001,
RV802 and RV8003 with epoxy to prevent any possible
misadjustment by non-trained technical service.
SECTION 4

SAFETY RELATED ADJUSTMENTS

Is RHT
Changed?
— 23 —
KV-32XBR400/36XBR400/36XBR400H/38DRC1/38DRC1C
130 ( ± 2) VAC at QC
120 ( ± 2 ) VAC at Overall Adjustment (After aging)
Setting Mode: Full mode
Signal input : Cross hatch of NTSC at QC
Initial setting : Reset condition at QC
Confirm point : Across C6544 for B+ of [D] board.
Is D-Board
Replaced?