– 15 –
Procedure :
1. Connect oscilloscpe to test point TP (TEO) on BD board.
2. Turn 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. Confirm that the oscilloscope waveform is symmetrical on the
top and bottom in relation to 0Vdc, and check this level.
1 track jump waveform
E-F Balance (1 Track Jump) Check
(Without remote commander)
Specified level: • x 100 = less than ± 7%
• A + B = 300 ± 100 mVp-p
Focus/Tracking Gain Adjustment (RV102, RV103)
This gain has a margin, so even if it is slightly off.
There is no problem.
Therfore, do not perform this adjustment.
Please note that it should be fixed to mechanical center position
when you moved and do not know original position.
A – B
2 (A + B)
Adjustment Location:
[BD (CD) BOARD] — Component Side —
–
+
oscilloscope
BD (CD) board
TP (TEO)
TP (VC)
A
B
0V
LEVEL : 300
±
100 mVp-p
RF
RV101
(Focus Bias Adjust)
RV103
TEO
VC
FEO
RV102
TEI
FEI
FOK
IC101
IC104
GND
PCK
IC102
Summary of Contents for HCD-SD1
Page 27: ...HCD SD1 35 36 7 10 SCHEMATIC DIAGRAM PANEL SECTION Page 30 Page 30 ...
Page 29: ...HCD SD1 7 12 SCHEMATIC DIAGRAM AMP SECTION 39 40 Page 47 48 Page 43 Page 28 ...
Page 31: ...HCD SD1 7 14 SCHEMATIC DIAGRAM CONNECTOR SECTION 43 44 Page 30 Page 29 Page 40 Page 33 ...
Page 33: ...HCD SD1 7 16 SCHEMATIC DIAGRAM REG SECTION 47 48 Page 40 Page 29 Page 29 Page 33 ...
