Sony HCD-VX880AV Service Manual ▷ View online
9
VIDEO CD COLOR-BARS MODE
On this mode, the data of the color-bars signal as a picture signal and the 1kHz sine wave signal as a sound signal are output by the
mechanism control microcomputer (IC505) for video CD signal check. When measurement of the voltage and waveform on the VIDEO
board, perform it in this mode.
For reference, the color-bars signal can be observed at J502 (VIDEO OUT) and the sound signal can be observed at J101 (VIDEO/MD
(AUDIO) OUT) using an oscilloscope.
1. Connect the lead wire to both ends of the land of SL503 of the VIDEO board.
2. Turn the power on. Press FUNCTION button to select CD.
3. After 2 or 3 seconds later, connect the lead wire.
4. After measuring, remove the lead wire connected.
mechanism control microcomputer (IC505) for video CD signal check. When measurement of the voltage and waveform on the VIDEO
board, perform it in this mode.
For reference, the color-bars signal can be observed at J502 (VIDEO OUT) and the sound signal can be observed at J101 (VIDEO/MD
(AUDIO) OUT) using an oscilloscope.
1. Connect the lead wire to both ends of the land of SL503 of the VIDEO board.
2. Turn the power on. Press FUNCTION button to select CD.
3. After 2 or 3 seconds later, connect the lead wire.
4. After measuring, remove the lead wire connected.
[VIDEO BOARD] (SIDE B)
CN501
1
30
80
SL501
SL502
SL503
CN502
51
IC505
31
50
100
81
10
LOCATION OF PARTS AND CONTROLS
1
1/u button and indicator
2
DEMO (STANDBY) button
3
DISC 1 button and indicator
4
DISC 2 button and indicator
5
DISC 3 button and indicator
6
DISC SKIP/EX–CHANGE button
7
§ (Eject) button
8
SYNC BASS H indicator
9
SVIDEO/VCD indicator
10
PBC indicator
11
PBC OFF indicator
12
SYNC BASS L indicator
13
TUNER/BAND button
14
^ (CD) button and indicator
15
p button
16
SYNC BASS button
17
SYNC EQ button
18
KARAOKE PON/MPX button
19
CD NON-STOP button and indicator
20
REC PAUSE/START button and
indicator
indicator
21
DSP button and indicator
22
DBFB button
23
HI-DUB button
24
CD SYNC button
25
PHONES jack
26
VOLUME knob
27
ENTER/NEXT button and indicator
28
) + button and indicator
29
PRO LOGIC button and indicator
30
JOG/
0x) dial and indicator
31
GROOVE button and indicator
32
0 – button and indicator
33
DVD 5.1 CH button
34
CD FLASH button
35
CD LOOP button
36
MIC 2 jack
37
TIMER SELECT button and indicator
38
CLOCK/TIME SET button
39
MIC 1 jack
40
SPECTRUM ANALYZER button
41
DISPLAY button
42
MIC LEVEL knob
43
REPEAT/STEREO/MONO button
44
PLAY MODE/DOLBY NR button
45
EDIT DIRECTION TUNER MEMORY
button
button
46
ECHO LEVEL knob
47
P FILE MEMORY button
48
GEQ CONTROL button
49
FILE SELECT button
50
EFFECT button
51
NEXT button
52
PREV button
53
RETURN button
54
SELECT button
55
( (TAPE B) button and indicator
56
9 (TAPE B) button and indicator
57
( (TAPE A) button and indicator
58
9
(TAPE A) button and indicator
59
FUNCTION button
60
SYNC EQ indicator
61
Remote sensor
62
EFFECT indicator
63
Display Window
64
Disc tray
SECTION 2
GENERAL
Front Panel
3
2
1
64
63
62
8
12
9
10
11
61
33
32
31
46
60
56
57
58
59
4
5
6
7
55
51
52
53
54
47
48
49
50
15 14 13
20
23
24
25
26
27
28
29
30
18
19
17 16
22 21
39
42
40
41
44 43
45
34
35
36
37
38
11
This section is extracted from
instruction manual.
12
SECTION 3
DISASSEMBLY
Note:
Follow the disassembly procedure in the numerical order given.
3-1. LOADING PANEL
3-2. FRONT PANEL
3
Loading panel
assembly
2
Pull-out the disc tray.
1
Turn the cam to the direction
of arrow.
Claws
3
Screw (BVTT 3x8)
4
Screw (BVTT 3x8)
0
Front panel
!¢
Screw (BVTP 3x8)
!∞
Video board
6
Screw (BVTP 3x10)
!£
Two screws (BVTP 3x8)
5
Screw
(BVTP3x10)
1
Screw (BVTT 3x6)
2
Screw (BVTT 3x6)
7
Flat type wire
(CN141)
8
Flat type wire
(CN131)
Lead wire
Lead wire
9
Flat type wire
(CN132)
!¡
Flat type wire
(CN501)
!™
Flat type wire
(CN502)
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