Safety Related Adjustment - Sony DXF-51 Service Manual

H.V. Regulation Confirmation
This confirmation must be made whenever the following
parts (with marking in circuit diagram) were replaced.
FBT301, R311, R312, R401, RV302
1. Open C304 on the D board.
2. Enter full white signal to pin 6 (VF VIDEO (X)) of
D-sub 26-pin connector (CN702).
3. Connect a high voltage meter to the HV pin of
FBT301 on the P board.
4. Confirm that the voltage is below DC15 kV when both
BRIGHT and CONTRAST are set to the minimum
position.
5. Confirm that the voltage is below DC13.5 kV when
both BRIGHT and CONTRAST are set to the maxi-
mum position.
6. Connect the C304 removed in step1.
DXF-51
Section 3

Safety Related Adjustment

+ + + + + B Confirmation
1. Connect a digital voltmeter to the TP302.
2. Confirm that the voltage is DC9.5 ± 0.1 V.
TP302
C304
D board (Conductor side)
If out of the range, perform the switching power output
adjustment (Section 4).
3-1 (E)