Pioneer AVH-P3100DVD Service Manual page 60

1
Check 14: Is USB Circuit OK?
<Outline>
The data is transmitted through D+, D- and SDA of HOST I/F while playing USB/IPOD.
A
USB memory uses only D+ and D-, but IPOD uses SDA (DATA) and SCL (CLOCK)
in addition to D+ and D-.
IC1501
DVD-LSI
B
<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.
C
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.
No.
Checking spot (stylus)
1 CP_RESET
2 SDATA
3 SCLOCK
4 D+
5 D-
D
Standard value 1
E
F
60
1
2
CP_RESE
I2C_SDA
I2C_SCL
D+
D-
DGND
Fig. 14-1: USB Circuit
Standard value 1 Standard value 2
VCC33*0.7or more
VCC33*0.7or more VCC33*0.2 or less
VCC33*0.7or more VCC33*0.2 or less
VCC33*0.7or more VCC33*0.3 or less
VCC33*0.7or more VCC33*0.3 or less
Standard value 2
Fig. 14.2: USB Circuit Communication Wave
AVH-P3100DVD/XN/UC
2
3
CN1901
HOST I/F
*Until the pioneer log appears after connecting the iPod
*Until the pioneer log appears after connecting the iPod
3
4
4