Sony MDP-440 MDP-640D Service Manual page 93

2, LD Focus Galn Adjustment (SV-33 Board) Adjustment method :
1) Search the frame 2201,
Mode Blayback 2) Adjust the waveform as shown in the figure below
Signal Frame 2201 (GRAY) (REFSP) with RV107.
MD adjustment cable
CHT : (FOCUS ERR (¥)]
Measurement Point (Pin © of CX105)
CH2: [FOCUS ERR (X)] Ne
i (Pin @ of CX105)
[Measuring Equipment | Oscilloscope (X-Y mode)
'Adjusting Bement | RV1O7
Specitiod Value See figure below
Connections
0K
q di
Ausio signal
oscillator
al MD adjustment cable
as
LOVER FOCUS ERR (X)
Pia ® of CN105
OW, ©
FOCUS ERR (x)
Oxf iga—— Pin @ of CHIU
Oscitloscone Ter NG
a
on oa [BV /01Y
© O Fig. 7-6.
—128—