Sony DFX-51 User Manual

3-1 (E)

DXF-51

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.

+

+

+

+

+

1.

Connect a digital voltmeter to the TP302.

2.

Confirm that the voltage is DC9.5 

±

 0.1 V.

If out of the range, perform the switching power output

adjustment (Section 4).

TP302

C304