Pioneer AVIC-D3/XU/UC Service Manual page 179

5
Check 5: 27 MHz Normal?
<Outline> Each clock is created inside the IC1501 using the 27 MHz master crystal oscillator (X1501).
X1501 OSCO
27 MHz
OSCI
crystal
Fig 5.1: Clock configuration
<Check method> Turn the power on, and check with DGND being the reference.
In case of NG, check the applicable line, periphery of IC1501,
soldering of the peripheral components and defective components.
NO. Check point
2 IC1501 169pin
Specification
value
GND
Fig 5.2: Clock specification value
Side A
Fig 5.3: 27 MHz check point
5
6
IC1501
DVD-LSI
VCC33 VCC12
Specification value
Module No.
27 MHz
ALL
± 50 ppm
AVIC-D3/XU/UC
6
7
Unit
ppm
DGND1
IC1501 169pin
7
8
A
B
C
D
E
F
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