Pioneer CDJ-2000, Service Manual

Page: 39 / 166

39
CDJ-2000
5 6 7 8
5 6 7 8
A
B
C
D
E
F
[12-3] E-7020: USB-B DE V ICE ERROR
[12-4] E-7021: PHY CHIP ERROR
10.5 MAI N
ASSY (3/3)
10.5 MAI N
ASSY (3/3)
10.3 MAI
N
ASSY (1/3)
10.5 MAI N
ASSY (3/3)
10.3 MAI
N
ASSY (1/3)
10.5 MAI N
ASSY (3/3)
10.3 MAI
N
ASSY (1/3)
10.3 MAI N
ASSY (1/3)
10.5 MAI
N
ASSY (3/3)
10.3 MAI N
ASSY (1/3)
10.5 MAI
N
ASSY (3/3)
The USB-B controller (IC1101) does not work properly.
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
1 -
If it is judged as N G, the USB-B controller (IC1101)
does not work properly or communication between the
MAI
N CPU (IC101) and USB-B controller is not establi-
shed. Proceed as follows: See also “[4-2] N o communi-
cation via the USB connector (Type B).”
2
Power is not
supplied properly.
MAI N Assy
Check the power voltage of V +3R3_USB_
IO) line.
Check the connections of the power supply lines.
If soldering is improper, resolder it.
3
The clock is not
properly input.
MAI N Assy
Check that the frequency at Pin 14 (USB_
CLK) of USB-B controller (IC1101) is 48
MHz.
Check the connection of the logic IC (IC115).
If soldering is improper, resolder it.
4
The RESET
signal is not
properly input.
MAI N Assy
Check that the signals of the USB_RST
and CPU_USB_RST lines are H.
Check the connection of the logic IC (IC123).
If soldering is improper, resolder it.
If the signal of the CPU_USB_RST line is L, the
port on the MAI
N CPU may be damaged.
If the signal of the USB_RST line is L, check the
connection of the logic IC (IC123) and its periphery.
5
Loose connection
between the MAI
N
CPU and MAI N DSP
MAI N Assy
Check the connection between the MAI N
CPU and USB-B controller.
Check the connections between MAI N CPU (IC101)
and USB-B controller (IC1101).
If soldering is improper, resolder it.
6 -
If the symptom persists after the above
corrections,
Replace the USB-B controller.
The PHY CHIP (IC1304) does not work properly.
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
1 -
If it is judged as N G, the PHY CHIP (IC1304) does not
work properly or communication between the MAI N
CPU (IC101) and PHY CHIP is not established.
Proceed as follows: See also “[5-1]
N o LA N communi-
cation.”
2
Power is not
supplied properly.
MAI N Assy
Check the power voltages of V +3R3_ETH
and V +3R3A_ETHR) lines.
Check the connections of the power supply lines.
If soldering is improper, resolder it.
3
The clock is not
properly input.
MAI N Assy
Check that the frequency at Pin 47 (X2) of
PHY CHIP (IC1304) is 25 MHz.
Check the connections between X1302 and PHY CHIP.
If soldering is improper, resolder it.
4
The RESET
signal is not
properly input.
MAI N Assy
Check that the signals of the ETHER_RST
and CPU_ETHER_RST lines are H.
Check the connection of the logic IC (IC123).
If soldering is improper, resolder it.
If the signal of the CPU_ETHER_RST line is L, the
port on the MAI
N CPU may be damaged.
If the signal of the ETHER_RST line is L, check the
connection of the logic IC (IC123) and its periphery.
5
Loose connection
between the MAI
N
CPU and MAI N DSP
MAI N Assy
Check the connection between the MAI N
CPU and PHY CHIP controller.
Check the connections between MAI N CPU (IC101)
and PHY CHIP (IC1304).
If soldering is improper, resolder it.
6 -
If the symptom persists after the above
corrections,
Replace the PHY CHIP (IC1304).