Pioneer AVIC-F90BT/XS/UC Service Manual page 46

1
QQ
3 7 63 1515 0
Check 5: 27 MHz Normal?
<Outline> Each clock is created inside the IC1501 using the 27 MHz master crystal oscillator (X1501).
A
X1501
27 MHz
crystal
B
<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
C
TE
L 13942296513
Specification
value
GND
Fig 5.2: Clock specification value
Side A
D
E
www
F
Fig 5.3: 27 MHz check point
46
1
http://www.xiaoyu163.com
2
IC1501
DVD-LSI
OSCO
OSCI
VCC33
Fig 5.1: Clock configuration
Module No.
ALL
x ao
y
. i
AVIC-F90BT/XS/UC
2
http://www.xiaoyu163.com
3
8
VCC12
Specification value Unit
27 MHz
ppm
± 50 ppm
Q Q
3 6 7 1 3
DGND1
IC1501 169pin
u163
.
3
4
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
m
co
4
9 9
2 8 9 9