Pioneer AVH-P7800DVD/UC Service Manual page 195

5
Check 10 : DACCLK operated normally?
An oscillating crystal(X1501) of 27 MHz is used to
DACCLK for Audio-DAC by the IC1507.
X1501
27 MHz
crystal
<Check>
DVD-REF-A1 Title1 general CDDA is reproduced.
It checks on a DGND standard.
If the result is not satisfactory, check to see if there are any problems with the resin flux cored solder and other
defects in the applicable line, vicinity of IC 1501 and peripheral components..
Verification location 1
(Sensing pin)
Verification location 2
No.
1 DACCK IC1501 pin166
2 DACCK IC1501 pin166
Rated Value 1
GND
5
6
IC1501
DVD-LSI
VCC33 VCC12
Fig.10.1 : Clock
Rated value 1
Media
DVD 2.0 V
CD 2.0 V
Rated Value 3
Rated Value 2
Fig.10.2 : Clock rated values
AVH-P7800DVD/UC
6
7
IC1851
DACCLK
Audio-DAC
Rated value 2
VCC33V DGND 0.8 V 36.864 0 MHz
VCC33V DGND 0.8 V 33.868 8 MHz
7
8
Rated value 3
300 ppm
300 ppm
8
A
B
C
D
E
F
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