Pioneer AVH-X8500BHS Service Manual page 55

5
Check 9: Is DACCLK normal?
<Outline> DACCLK for Audio-DAC is created by IC1501 using the 27 MHz master crystal oscillator (X1501).
X1501
27MHz
crystal
<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) Media
No.
1 DACCK
2 DACCK
Specification
value 1
GND
Side A
Check point 2 (IC1501 148 pin)
5
6
IC1501
DVD-LSI
VCC33
VCC12
Specification value 1 Specification value 2 Specification value 3
DVD 2.0 V - VCC33V
CD 2.0 V - VCC33V
Specification
Specification
value 2
value 3
Fig 9.2: Clock specification value
Fig 9.3: DACCLK check point
AVH-X8500BHS/XNUC
6
7
IC1801
DACCLK
Audio-DAC
Fig 9.1: Clock configuration
DGND - 0.8 V 36.8640 MHz ± 300 ppm
DGND - 0.8 V 33.8688 MHz ± 300 ppm
DGND4
7
8
A
B
C
D
E
F
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