Procedure:
1. Connect the frquency counter to TP (PLCK) on the BD board.
2. Turned power switch on.
3. Put disc (YEDS-18) in and press the
·
∏
button, and play
the number five track.
4. Confirm that the reading on frequency counter is 4.3218 MHz.
Connection Location:
[BD BOARD] (SIDE-A)
When a general remote commander is not used (1 Track Jump
Check):
Procedure:
1. Connect the oscilloscope to TP (TE) and TP (VC) on BD board.
2. Turned power switch on.
3. Put disc (YEDS-18) in and press the
·
∏
button, and play
the number five track.
4. Press the
·
∏
button. (Becomes the 1 track jump mode)
5. Confirm that 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
2 (A + B)
×
100 =
±
7 (%)
1 track jump waveform
Center of the waveform
B
level : 1.3
±
0.6 Vp-p
symmetry
A (DC voltage)
0V
RF PLL Free-run Frequency Check
Connection:
+
–
TP (PLCK)
BD board
frequency counter
VIDEO SECTION
Frequency Adjustment
Connection:
Procedure:
1. Connect the frequency counter to TP410 (DCLK) on VIDEO
board.
2. Turned power switch on.
3. Press the FUNCTION button to select the CD.
4. Adjust CT401 on the VIDEO board so that the frequency counter
reading 13.5 MHz
±
40 Hz at stop status.
Adjustment Location:
[VIDEO BOARD] (SIDE-B)
+
–
TP410 (DCLK)
VIDEO board
frequency counter
TP410
(DCLK)
IC402
CT401
IC101
(FEL)
(FE)
(FE)
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