Voltages And Waveforms; Signal Logic; Spindle System; Digital Input System - Pioneer PDR-W839 Service Manual

PDR-W839

VOLTAGES and WAVEFORMS

Signal Logic

• Spindle System

A 4/5
CD-R CORE ASSY
Media Pickup Position
Inner
CD
Outer
12cm Inner
CD-R
12cm Outer
CD-RW
8cm CD-R
STOP
* Inner: Absolute time is less than 23 minutes.
Outer: Absolute time is more than 23 minutes.
A 1/5
CD-R CORE ASSY
CLV
Operating
Mode
(IC301-pin 30)
STOP 0V
CAV, W-CLV 5V
E-CLV 5V
* W-CLV: WOBBLECLV , E-CLV: EFMCLV

• Digital Input System

A 4/5
CD-R CORE ASSY
at FS = 44.1 kHz
XVCO
0V
(IC501-pin 101)
at DIGITAL LOCK
DIRERR
0V
(IC501-pin 142)
• Audio System
A 4/5
CD-R CORE ASSY
A/D Converter used
at Analog REC Pause,
REC, Monitor
ADCSTBY
5V
(CN502-pin 4)
at MUTE ON
(Audio Signal Not Output)
AMUTE
5V
(CN502-pin 9)
• Others
A 1/5
CD-R CORE ASSY
XPFAIL
5V
(CN302-pin 9)
26
SPLG1 SPLG3
(IC501-pin97) (IC501-pin99)
5V 0V
0V 5V
5V 0V
0V 5V
0V 5V
5V 5V
ECLV
(IC301-pin 29)
0V
0V
5V
Others
5V
at DIGITAL UNLOCK
5V
Others
0V
at MUTE OFF
(Audio Signal Output)
0V
Note :
The encircled numbers denote measuring point in the schematic
diagram.
A 1/5
CD-R CORE ASSY
CN302 - pin 1 (MSI)
1
V: 200mV/div. , H: 5msec/div.
CN302 - pin 2 (MSO)
2
V: 200mV/div. , H: 5msec/div.
CN302 - pin 5 (MSCK)
3
V: 200mV/div. , H: 500nsec/div.
(PLAY)
CN302 - pin 7 (SYSREQ)
4
V: 200mV/div. , H: 5msec/div.
CN302 - pin 8 (MACK)
5
V: 200mV/div. , H: 5msec/div.
IC301 - pin 21 (CLOCKDEC)
6
V: 200mV/div. , H: 5msec/div.
IC301 - pin 24 (XLATDEC)
7
V: 200mV/div. , H: 5msec/div.
IC301 - pin 25 (CLOCKRF)
8
V: 200mV/div. H: 5msec/div.
IC301 - pin 26 (DATA)
9
V: 200mV/div. , H: 5msec/div.
IC301 - pin 27 (XLATRF)
10
V: 200mV/div. , H: 5msec/div.