Pioneer CX-3250 Service Manual page 77

5
Check 13: 48 MHz Normal?
<Outline> Each clock is created inside the IC1501 using the 48 MHz master crystal oscillator (X1501).
X1950
48 MHz
crystal USB_CLOCK
<Check method> Turn the power on, and check with DGND1 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 50pin-DGND1
Specification
value
GND
Fig 13.2: Clock specification value
5
6
IC1501
DVD-LSI
VCC33 VCC12
Fig 13.1: Clock configuration
Specification value
Module No.
48 MHz
ALL
± 50 ppm
AVIC-X930BT/XNUC
6
7
Unit
ppm
7
8
A
B
C
D
E
F
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