Pioneer AVIC-F910BT Service Manual page 67

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Check 14: Is USB Circuit OK?
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<Outline>
The data is transmitted through D+, D- and SDA of HOST I/F while playing USB/IPOD.
USB memory uses only D+ and D-, but IPOD uses SDA (DATA) and SCL (CLOCK)
in addition to D+ and D-.
IC1501
DVD-LSI
<Check Method>
1.USB Memory: Play a song from USB memory and check D+ and D- with the DGND standards.
2.iPod: Connect iPod and check CP_RESET, SDA and SCL with the DGND standards until the pioneer log appears.
Play a song from iPod and check D+/D- with the DGND standards.
When it does not conform to the standards, check appropriate line, main parts shown in the above figure,
soldering of peripheral parts and malfunctions in parts.
TE
L 13942296513
No.
Checking spot (stylus)
1 CP_RESET
2 SDATA
3 SCLOCK
4 D+
5 D-
Standard value 1
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Fig. 14-1: USB Circuit
Standard value 1 Standard value 2
VCC33*0.7or more
VCC33*0.7or more
VCC33*0.7or more
VCC33*0.7or more
VCC33*0.7or more
Standard value 2
Fig. 14.2: USB Circuit Communication Wave
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CP_RESE
I2C_SDA
I2C_SCL
D+
D-
DGND
Q Q
3 6 7 1 3 1 5
VCC33*0.2 or less *Until the pioneer log appears after connecting the iPod
VCC33*0.2 or less *Until the pioneer log appears after connecting the iPod
VCC33*0.3 or less
VCC33*0.3 or less
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AVIC-X910BT/XS/UC
7
9 4 2 8
CN1901
HOST I/F
0 5 8 2 9 9 4 2 8
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7
8
9 9
A
B
C
9 9
D
E
F
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