Read Sony HCD-W550 / MHC-W550 / MHC-W770AV Service Manual online
— 10 —
E-F Balance (1 Track Jump) check
(Without remote commander)
(Without remote commander)
Procedure:
1.
1.
Connect oscilloscope to test point TP (TEO) on BD board.
2.
Turned Power switch on.
3.
Put disc (YEDS-18) in to play the number five track.
4.
Press the “P (Pause)” button. (Becomes the 1 track jump mode)
5.
Check the level B of the oscilloscope's waveform and the A
(DC voltage) of the center of the Traverse waveform.
Confirm the following:
(DC voltage) of the center of the Traverse waveform.
Confirm the following:
A – B
2 (A + B)
×
100 = ±7 (%)
1 track jump waveform
Adjustment Location:
[BD BOARD]
(Conductor Side)
IC103
CNU102
IC101
IC
I02
I02
RF
FOK
VC
FEO
TEO
GND
CNU101
Center of the waveform
B
level : 500 mV
±
100 mVp-p
symmetry
A (DC voltage)
0V
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