CD-MPX870
7 – 2
Although a CD is inserted and the cover is closed,
"NO DISC" is displayed.
(1) Focus-HF system check.
Press the Tray1 CD Eject Button without inserting a disc, and try
starting the playback operation.
Figure 1
T
FDO
TDO
Stopped
CH1=500 mV
DC 10:1
CH3=500 mV
DC 10:1
500 ms/div
(500 ms/div)
NORM:20 kS/s
1
3
=Record Length=
Smoothing : ON
CH1 : 0.000 V
CH2 : 0.0 V
Main : 100 K
Zoom : 2 K
Mode : AUTO
Type : EDGE CH1
Delay : 0.0 ns
Hold off : 0.2 µs
CH3 : 0.000 V
CH4 : 0.00 V
BW : FULL
=Trigger=
=Filter=
=Offset=
CH1
v/DIV
500 mV
1. Does the pickup move to the PICKUP-IN Switch (NSW1)
position ?
No
Sled motor (NM2).
Yes
2. Does the focus (lens) move up and down ?
(Waveform drawing Figure 1)
No
Check the focus peripheral circuit.
Yes
3. Is the laser lit ?
No
Check the laser diode driver Q1 peripheral circuit.
Yes
4. Is the turntable rotating ?
No
Spindle motor (NM1).
When a disc is loaded, start playback operation.
1. Is focus servo activated ?
(Waveform drawing Figure 2)
No
Pins 5~9, 11, 18 and 19 on IC1
Check the laser diode driver Q1 peripheral circuit.
Yes
2. Is the HF waveform normal ?
(Waveform drawing Figure 3)
No
If the level is not normal.
Figure 2
T
FDO
TE
Stopped
CH1=500 mV
DC 10:1
CH2=10 V
DC 10:1
CH3=1 V
DC 10:1
500 ms/div
(500 ms/div)
NORM:20 kS/s
1
2
3
=Record Length=
Smoothing : ON
CH1 : 0.000 V
CH2 : 0.0 V
Main : 100 K
Zoom : 2 K
Mode : AUTO
Type : EDGE CH1
Delay : 0.0 ns
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger=
=Filter=
=Offset=
-3 div
-1 div
0 div
+1 div
+3 div
CH Position To
CH2
Position
0.20 div
Figure 3
Vp-p=1.0 V~1.3 V
0.5 mV/div,0.5 µsec/div
Содержание CD-MPX870
Страница 12: ...CD MPX870 2 7 APPLY GREASE SC141 PULL THE LEVER UNITIL REACH THE ARROW MARK 143 112 3 ...
Страница 15: ...CD MPX870 2 10 APPLY GREASE SC141 AT HALF GEAR AREA ROTATE CLOCKWISE UNTIL REACH HERE MAXIMUM 6 129 ...
Страница 16: ...CD MPX870 2 11 151 150 149 7 ...
Страница 19: ...CD MPX870 2 14 10 148 147 146 145 ...
Страница 20: ...CD MPX870 2 15 APPLY GREASE SC141 WHEN FIXING ITEM 144 MUST FOLLOW AS SHOWN 121 144 130 11 ...
Страница 21: ...CD MPX870 2 16 FIGURE 1 FIGURE 3 FIGURE 2 APPLY GREASE SC141 APPLY GREASE SC141 117 12 ...
Страница 29: ...CD MPX870 2 24 20 110 BIG SLOT FACING OUT ...
Страница 41: ...CD MPX870 2 36 NO GAP HAVE GAP CORRECT INCORRECT 32 ...
Страница 48: ...CD MPX870 3 7 MEMO ...
Страница 54: ...CD MPX870 5 3 MEMO ...
Страница 56: ...CD MPX870 6 2 3 SCHEMATIC DIAGRAM Figure 6 2 MAIN SCHEMATIC DIAGRAM 1 2 TO CD SERVO ...
Страница 57: ...CD MPX870 6 3 Figure 6 3 MAIN SCHEMATIC DIAGRAM 2 8 ...
Страница 58: ...CD MPX870 6 4 Figure 6 4 POWER SCHEMATIC DIAGRAM 3 8 ...
Страница 59: ...CD MPX870 6 5 Figure 6 5 POWER SCHEMATIC DIAGRAM 4 8 P LED702 ...
Страница 60: ...CD MPX870 6 6 Figure 6 6 DISPLAY SCHEMATIC DIAGRAM 5 8 TAPE MECHANISM PWB G ...
Страница 61: ...CD MPX870 6 7 Figure 6 7 DISPLAY SCHEMATIC DIAGRAM 6 8 ...
Страница 62: ...CD MPX870 6 8 Figure 6 8 SCHEMATIC DIAGRAM 7 8 ...
Страница 63: ...CD MPX870 6 9 Figure 6 9 SCHEMATIC DIAGRAM 8 8 ...
Страница 67: ...CD MPX870 6 13 Figure 6 13 WIRING SIDE OF MAIN PWB BOTTOM VIEW 4 15 1 1 2 3 4 5 6 7 7 8 9 10 11 ...
Страница 68: ...CD MPX870 6 14 MEMO ...
Страница 73: ...CD MPX870 6 19 Figure 6 18 WIRING SIDE OF DISPLAY PWB BOTTOM VIEW 9 15 ...
Страница 76: ...CD MPX870 6 22 Figure 6 21 WIRING SIDE OF CD SERVO PWB TOP VIEW 12 15 ...
Страница 77: ...CD MPX870 6 23 Figure 6 22 WIRING SIDE OF CD SERVO PWB TOP VIEW 13 15 ...
Страница 92: ...CD MPX870 8 9 MEMO ...
Страница 103: ...CD MPX870 10 10 CD MECHANISM PARTS ...
Страница 105: ...CD MPX870 12 11 CHANGER MECHANISM PARTS ...
Страница 107: ...CD MPX870 14 12 CABINET PARTS Tuner Pack ...
Страница 111: ...CD MPX870 18 ...
Страница 112: ...CD MPX870 19 A0606 LAG ...