— 17 —
A = 0.9 to 1.1 Vp-p
B = 0.678 to 0.75 Vp-p
C = 0.214 to 0.328 Vp-p
Fig. 1 Video CD Color Bar Signal Output from J9001
(VIDEO OUT)
[VIDEO BOARD] (SIDE-B)
+
–
oscilloscope
75
Ω
set
J9001 (VIDEO OUT)
B
H
C
A
SL702
SL701
IC751
SL703
IC251
E-F BALANCE MODE
Refer to the SECTION 6 ELECTRICAL ADJUSTMENTS page
21.
Procedure:
1. Turned power switch on.
2. Press the FUNCTION button to select the CD.
3. Connect the SL701 and SL703 on the VIDEO board with solder.
4. Press the
·
button in playback.
5. Press the REPEAT button, the tracking servo and sledding
servo are turned on or off.
6. When the servo is off, the counter on front panel will not be
changed.
7. After measuring, remove the soldering installed.
VIDEO CD COLOR BAR MODE
On this mode, the data of the color bar signal as a picture signal and
the 1 kHz sine wave signal as a sound signal are output by the
mechanism controller (IC701) for the video CD signal check. When
measurement of the voltage and waveform on the VIDEO board,
perform it in this mode.
For reference, the color bar signal can be observed at J9001 (VIDEO
OUT) and the sound signal can be observed at J101 (VIDEO
(AUDIO) OUT) using an oscilloscope.
Procedure:
1. Turned power switch on.
2. Press the FUNCTION button to select the CD.
3. Connect the SL701 on the VIDEO board with solder.
4. After measuring, remove the soldering installed.
Содержание HCD-V3900
Страница 6: ... 6 This section is extracted from instruction manual ...
Страница 28: ...HCD V3900 V5900 35 36 6 7 SCHEMATIC DIAGRAM CD MOTOR SECTION See page 84 for IC Block Diagrams Page 47 ...
Страница 30: ...HCD V3900 V5900 39 40 6 9 SCHEMATIC DIAGRAM AUDIO SECTION See page 84 for IC Block Diagrams Page 49 Page 49 ...
Страница 42: ...HCD V3900 V5900 63 64 6 21 SCHEMATIC DIAGRAM VIDEO OUT SECTION See page 84 for IC Block Diagrams ...