Pioneer AVIC-X940BT, Service Manual

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AVIC-X940BT/XNUC
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1 2 3 4
1 2 3 4
C
D
F
A
B
E
Check 9: Is DACCLK normal?
<Outline> DACCLK for Audio-DAC is created by IC1501 using the 27 MHz master crystal oscillator (X1501).
DACCLK
Fig 9.1: Clock configuration
<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.
No.
Check point 1 (stylus) Media
Specification value 1 Specification value 2 Specification value 3
1 DACCK DVD 2.0 V - VCC33V DGND - 0.8 V 36.8640 MHz ± 300 ppm
2 DACCK CD 2.0 V - VCC33V DGND - 0.8 V 33.8688 MHz ± 300 ppm
GND
Fig 9.2: Clock specification value
Side A
Fig 9.3: DACCLK check point
IC1501
DVD-LSI
X1501
27MHz
crystal
IC1801
Audio-DAC
VCC33 VCC12
Specification
value 1
Specification
value 2
Specification
value 3
DGND4
Check point 2 (IC1501 148 pin)