HHB BurnIT CDR-830, Service Manual

Page: 26 / 90

CDR-830
26
Media Pickup Position
SPDLG1
(IC501-pin97)
SPDLG3
(IC501-pin99)
CD
Inner 5V 0V
Outer 0V 5V
CD-R
CD-RW
12cm Inner 5V 0V
12cm Outer 0V 5V
8cm CD-R 0V 5V
STOP 5V 5V
• Spindle System
• Digital Input System
• Audio System
VOLTAGES and WAVEFORMS
CD-R CORE PCB ASSY
A 4/5
CD-R CORE PCB ASSY
A 1/5
CD-R CORE PCB ASSY
A 4/5
CD-R CORE PCB ASSY
A 4/5
• Others
CD-R CORE PCB ASSY
A 1/5
at FS = 44.1 kHz Others
XVCO
(IC501-pin 101)
0V 5V
CLV
(IC301-pin 30)
ECLV
(IC301-pin 29)
STOP 0V 0V
CAV, W-CLV 5V 0V
E-CLV 5V 5V
Operating
Mode
A/D Converter used
at Analog REC Pause,
REC, Monitor
Others
ADCSTBY
(CN502-pin 4)
5V 0V
Signal Logic
* Inner: Absolute time is less than 23 minutes.
Outer: Absolute time is more than 23 minutes.
* W-CLV: WOBBLECLV , E-CLV: EFMCLV
at DIGITAL LOCK at DIGITAL UNLOCK
DIRERR
(IC501-pin 142)
0V 5V
at MUTE ON
(Audio Signal Not Output)
at MUTE OFF
(Audio Signal Output)
AMUTE
(CN502-pin 9)
5V 0V
XPFAIL
(CN302-pin 9)
5V
Note :
The encircled numbers denote measuring point in the schematic
diagram.
1
CN302 - pin 1 (MSI)
V: 200mV/div. , H: 5msec/div.
2
CN302 - pin 2 (MSO)
V: 200mV/div. , H: 5msec/div.
3
CN302 - pin 5 (MSCK)
V: 200mV/div. , H: 500nsec/div.
(PLAY)
4
CN302 - pin 7 (SYSREQ)
V: 200mV/div. , H: 5msec/div.
5
CN302 - pin 8 (MACK)
V: 200mV/div. , H: 5msec/div.
6
IC301 - pin 21 (CLOCKDEC)
V: 200mV/div. , H: 5msec/div.
7
IC301 - pin 24 (XLATDEC)
V: 200mV/div. , H: 5msec/div.
8
IC301 - pin 25 (CLOCKRF)
V: 200mV/div. H: 5msec/div.
9
IC301 - pin 26 (DATA)
V: 200mV/div. , H: 5msec/div.
10
IC301 - pin 27 (XLATRF)
V: 200mV/div. , H: 5msec/div.
CD-R CORE PCB ASSY
A 1/5