Pioneer CX-3250 Service Manual page 68

1
A
Check 9: Is DACCLK normal?
<Outline> DACCLK for Audio-DAC is created by IC1501 using the 27 MHz master crystal oscillator (X1501).
X1501
27 MHz
crystal
B
<Check method>
DVD: DVD-REF-A1 TITLE 1
CD: Playback a normal CDDA.
Common to all DVD-V compatible modules.
Check with DGND being the reference.
In case of NG, check the applicable line, the periphery of IC1501, soldering of the peripheral components and
defective components.
Check point 1 (stylus)
NO.
C
1 DACCK
2 DACCK
Specification
value 1
GND
D
E
F
68
1
2
IC1501
DVD-LSI
VCC33 VCC12
Fig 9.1: Clock configuration
Media Specification value 1 Specification value 2
DVD 2.0 V~VCC33 V
CD 2.0 V~VCC33 V
Specification
Specification
value 2
value 3
Fig 9.2: Clock specification value
AVIC-X930BT/XNUC
2
3
IC1801
DACCLK Audio-DAC
DGND~0.8 V
DGND~0.8 V
3
4
Specification value 3
36.864 0 MHz ± 300 ppm
33.868 8 MHz ± 300 ppm
4