Sony HCD-D390 - Compact Audio And Video System Service Manual page 24

E-F Balance (1 Track Jump) check
(Without remote commander)
BD board
TP (TEO)
TP (VC)
Procedure:
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:
A – B
100 = ±7 (%)
2 (A + B)
1 track jump waveform
0V
level : 500 mV
oscilloscope
+
–
Center of the waveform
B
A (DC voltage)
symmetry
100 mVp-p
Adjustment Location:
[BD BOARD] (Conductor Side)
TP (TEO)
TP (FEO)
TP
(GND)
IC103
CNU102
— 24 —
TP
TP
(RF)
(VC)
TP
(FOK)
IC
IC101
I02