Pioneer AVH-P7800DVD/UC, Service Manual

Page: 195 / 280

AVH-P7800DVD/UC
195
5 6 7 8
5 6
7
8
C
D
F
A
B
E
DACCLK
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..
No.
1 DACCK IC1501 pin166 DVD 2.0 V VCC33V DGND 0.8 V 36.864 0 MHz 300 ppm
2 DACCK IC1501 pin166 CD 2.0 V VCC33V DGND 0.8 V 33.868 8 MHz 300 ppm
GND
IC1501
DVD-LSI
IC1851
Audio-DAC
VCC33 VCC12
Rated Value 1
Rated Value 3
Rated Value 2
Fig.10.2 : Clock rated values
Check 10 : DACCLK operated normally?
An oscillating crystal(X1501) of 27 MHz is used to
DACCLK for Audio-DAC by the IC1507.
Fig.10.1 : Clock
Rated value 1 Rated value 2 Rated value 3
Media
Verification location 2
Verification location 1
(Sensing pin)
<Check>
DVD-REF-A1 Title1 general CDDA is reproduced.
X1501
27 MHz
crystal