Pioneer PDR-L77 Service Manual page 32

PDR-L77
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3 7 63 1515 0
VOLTAGES and WAVEFORMS
A 1/5
CD-R CORE ASSY
Media Pickup Position
12cm Inner
12cm Outer
CD
8cm Inner
8cm Outer
12cm Inner
12cm Outer
CD-R
CD-RW
8cm Inner
8cm Outer
at FS = 44 kHz
(at FS Converter through)
FSR/XTHR
0V
(CN301-pin 2)
at DIGITAL LOCK
XVCO
0V
(CN301-pin3)
UNLOCK
0V
(CN301-pin7)
XPFAIL
5V
TE
L 13942296513
(CN301-pin4)
XRST
5V
(CN301-pin11)
A 3/5
CD-R CORE ASSY
CLV
Operating
(IC201-pin13)
Mode
STOP 0V
CAV 0V
CLV 5V
ECLV 5V
A 4/5
CD-R CORE ASSY
A/D Converter used
at Analog REC Pause
or REC
ADSTBY
0V
(CN501-pin4)
at MUTE ON
(Audio Signal Not Output)
AMUTE
5V
www
(CN501-pin9)
LRSTD
5V
(CN501-pin10)
.
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DGAI D8CM
(IC351-pin56) (IC351-pin57)
0V 0V
5V 0V
0V 0V
5V 0V
5V 0V
5V 0V
0V 5V
5V 5V
Others
5V
at DIGITAL UNLOCK
5V
5V
−
−
ECLV
(IC201-pin14)
0V
5V
0V
5V
Others
5V
at MUTE OFF
(Audio Signal Output)
0V
−
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8
Note :
The encircled numbers denote measuring point in the schematic diagram.
A 1/5
CD-R CORE ASSY
CN301 - pin 5 (MREQ)
1
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
CN301 - pin 6 (EN_CE)
2
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
CN301 - pin 8 (XFUSE)
3
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
Q Q
3 6 7 1 3
CN301 - pin 9 (MACK)
4
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
CN301 - pin 10 (MSCK)
5
V: 0.2V/div.(10 : 1) H: 0.5µsec/div.
(PLAY)
CN301 - pin 12 (MSO)
6
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
u163
.
2 9 9 4 2 8
CN301 - pin 13 (MSI)
7
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
IC301 - pin 28 (SCLK)
8
V: 2V/div. H: 2µsec/div.
(Disck Loading)
IC301 - pin 27 (XL2)
9
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
1 5 0 5 8 2 9 9 4
IC301 - pin 26 (DATA)
10
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
IC301 - pin 25 (CLOK)
11
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
IC301 - pin 24 (XLAT)
12
V: 0.2V/div.(10 : 1) H: 5msec/div.
(STOP)
m
co
9 9
2 8 9 9