Pioneer CDJ-2000NXS Service Manual page 29

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[12-3] E-7020: USB-B DEVICE ERROR
The USB-B controller (IC701) does not work properly.
No. Cause Diagnostics Point
1 ————— —————
2 Power is not MAIN Assy
supplied properly.
3 The clock is not MAIN Assy
properly input.
4 The RESET MAIN Assy
signal is not
properly input.
5 Loose connection MAIN Assy
between the MAIN
CPU and USB-B
controller
6 ————— —————
[12-4] E-7021: PHY CHIP ERROR
The PHY CHIP (IC704) does not work properly.
No. Cause Diagnostics Point
1 ————— —————
2 Power is not MAIN Assy
supplied properly.
3 The clock is not MAIN Assy
properly input.
4 The RESET MAIN Assy
signal is not
properly input.
5 Loose connection MAIN Assy
between the MAIN
CPU and PHY
CHIP controller
6 ————— —————
[12-5] E-7023: GUI CPU ERROR
The TFT CPU (IC4001)does not work properly.
No. Cause Diagnostics Point
1 ————— —————
2 Power is not TFTB Assy
supplied properly.
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6
Item to be Checked
—————
Check the power voltage of V+3R3_USB_
IO) line.
Check that the frequency at Pin 14
(USB_CLK) of USB-B controller (IC701)
is 48 MHz.
Check that the signals of the USB_RST
and CPU_USB_RST lines are H.
Check the connection between the MAIN
CPU and USB-B controller.
If the symptom persists after the above
corrections.
Item to be Checked
—————
Check the power voltages of V+3R3_ETH
and V+3R3A_ETHR) lines.
Check that the frequency at Pin 47 (X2) of
PHY CHIP (IC704) is 25 MHz.
Check that the signals of the ETHER_RST
and CPU_ETHER_RST lines are H.
Check the connection between the MAIN
CPU and PHY CHIP controller.
If the symptom persists after the above
corrections.
Item to be Checked
—————
Check the power voltages of V+3R3T_BF
and V+1R2BF) lines.
CDJ-2000NXS
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Corrective Action
If it is judged as NG, the USB-B controller (IC701)
does not work properly or communication between
the MAIN CPU (IC10) and USB-B controller is not
established. Proceed as follows: See also "[4-2] No
communication via the USB connector (Type B)."
Check the connections of the power supply lines.
If soldering is improper, resolder it.
Check the connection of the logic IC (IC4).
If soldering is improper, resolder it.
Check the connection of the logic IC (IC8).
If soldering is improper, resolder it.
If the signal of the CPU_USB_RST line is L, the
port on the MAIN CPU may be damaged.
If the signal of the USB_RST line is L, check the
connection of the logic IC (IC8) and its periphery.
Check the connections between MAIN CPU
(IC10) and USB-B controller (IC701).
If soldering is improper, resolder it.
Replace the USB-B controller (IC701).
Corrective Action
If it is judged as NG, the PHY CHIP (IC704) does
not work properly or communication between the
MAIN CPU (IC10) and PHY CHIP is not
established. Proceed as follows: See also
"[5-1] No LAN communication."
Check the connections of the power supply lines.
If soldering is improper, resolder it.
Check the connections between X1302 and
PHY CHIP. If soldering is improper, resolder it.
Check the connection of the logic IC (IC8).
If soldering is improper, resolder it.
If the signal of the CPU_ETHER_RST line is L,
the port on the MAIN CPU may be damaged.
If the signal of the ETHER_RST line is L, check the
connection of the logic IC (IC8) and its periphery.
Check the connections between MAIN CPU
(IC10) and PHY CHIP (IC704).
If soldering is improper, resolder it.
Replace the PHY CHIP (IC704).
Corrective Action
If it is judged as NG, the TFT CPU (IC4001),
FLASH (IC4004) or SD_RAM (IC4005) does not
work properly or communication between the
MAIN CPU (IC10) and TFT CPU (IC4001) is not
established. Proceed as follows: See also
"[4-2] No communication via the USB connector
(Type B)."
The TFT CPU requires two power supply systems.
Check the connections of the power supply lines.
If soldering is improper, resolder it.
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A
Reference
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B
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C
Reference
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D
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E
Reference
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F
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