Pioneer AVH-P5050DVD Service Manual page 47

5
Check 9: Is DACCLK normal?
<Outline> DACCLK for Audio-DAC is created by IC1501 using the 27 MHz master crystal oscillator (X1501).
IC1501
X1501 DVD-LSI
27 MHz
crystal
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.
Check point 1 (stylus)
NO.
1 DACCK
2 DACCK
Specification
value 1
Specification
value 2
GND
Fig 9.2: Clock specification value
Side A
Check point 1 (stylus)
Fig 9.3: 27 MHz, DACCLK check point
5
6
VCC33 VCC12
Media Specification value 1 Specification value 2
DVD 2.0 V~VCC33 V
CD 2.0 V~VCC33 V
Specification
value 3
Check point 2 (IC1501 172 pin)
AVH-P5050DVD/XN/RC
6
7
IC1801
Audio-DAC
DACCLK
DGND~0.8 V
DGND~0.8 V
7
8
Specification value 3
36.864 0 MHz ± 300 ppm
33.868 8 MHz ± 300 ppm
8
A
B
C
D
E
F
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