37
CX-3311
5
6
7
8
5
6
7
8
A
B
C
D
E
F
IC1501 156pin
DGND1
Check 5: Is 27 MHz OK?
<Outline> Each clock is created inside the IC1501 using the 27 MHz master crystal oscillator (X1501).
OSCO
OSCI
Fig 5.1: Clock configuration
<Check method> Check the “DGND1” test point at the reference while the power is on.
In case of NG, check the applicable line, periphery of IC1501,
soldering of the peripheral components and defective components.
No.
Check point
Module No.
Specification value
Unit
2
IC1501 156pin - DGND1
ALL
27 MHz ± 50
ppm
GND
Fig 5.2: Clock specification value
Side A
Fig 5.3: 27 MHz check point
IC1501
DVD-LSI
X1501
27 MHz
crystal
VCC33
VCC12
Specification
value
