XR-MR7
34
Media
Pickup Position
DGAI
(IC351-pin56)
D8CM
(IC351-pin57)
CD
12cm Inner
0V
0V
12cm Outer
5V
0V
8cm Inner
0V
0V
8cm Outer
5V
0V
CD-R
CD-RW
12cm Inner
5V
0V
12cm Outer
5V
0V
8cm Inner
0V
5V
8cm Outer
5V
5V
CD-R CORE ASSY
CD-R CORE ASSY
at FS = 44 kHz
(at FS Converter through)
Others
FSR/XTHR
(CN301-pin 2)
0V
5V
at DIGITAL LOCK
at DIGITAL UNLOCK
XVCO
(CN301-pin3)
0V
5V
UNLOCK
(CN301-pin7)
0V
5V
XPFAIL
(CN301-pin4)
5V
−
XRST
(CN301-pin11)
5V
−
CLV
(IC201-pin13)
ECLV
(IC201-pin14)
STOP
0V
0V
5V
0V
5V
Operating
Mode
Others
ADSTBY
(CN501-pin4)
5V
at MUTE ON
(Audio Signal Not Output)
at MUTE OFF
(Audio Signal Output)
AMUTE
(CN501-pin9)
5V
0V
LRSTD
(CN501-pin10)
5V
−
VOLTAGES and WAVEFORMS
1/5
B
3/5
B
1
CN301 - pin 5 (MREQ)
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
2
CN301 - pin 6 (EN_CE)
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
3
CN301 - pin 8 (XFUSE)
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
4
CN301 - pin 9 (MACK)
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
5
CN301 - pin 10 (MSCK)
V: 0.2V/div.(10 : 1) H: 0.5
µ
sec/div.
(PLAY)
6
CN301 - pin 12 (MSO)
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
7
CN301 - pin 13 (MSI)
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
8
IC301 - pin 28 (SCLK)
V: 2V/div. H: 2
µ
sec/div.
(Disck Loading)
9
IC301 - pin 27 (XL2)
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
10
IC301 - pin 26 (DATA)
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
11
IC301 - pin 25 (CLOK)
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
12
IC301 - pin 24 (XLAT)
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
CD-R CORE ASSY
Note :
The encircled numbers denote measuring point in the schematic diagram.
1/5
B
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