Pioneer CDJ-2000NXS Service Manual page 30

1
A
No. Cause Diagnostics Point
3 The clock is not TFTB Assy
properly input.
4 The RESET TFTB Assy,
signal is not MAIN Assy
properly input.
5 Loose connection TFTB Assy
between the TFT
CPU and FLASH
6 Loose connection TFTB Assy
between the TFT
CPU and SD_RAM
B
7 ————— —————
[12-6] E-7025: CDC DEVICE ERROR
The CDC device (IC5001) for the needle search pad does not work properly.
No. Cause Diagnostics Point
1 ————— —————
2 Loose connections PNLB Assy,
in the communi- CDCB Assy
cation line.
C
3 Defective CDCB Assy
CDCB Assy
[12-7] E-8709: COMMUNICATION ERROR
Communication between the TFT CPU (IC4001) and MAIN CPU (IC10) is not possible.
No. Cause Diagnostics Point
1 ————— —————
2 Power is not MAIN Assy
supplied properly.
D
3 Loose connection MAIN Assy
between the MAIN
CPU and SD_RAM
4 Loose connections MAIN Assy,
in the communi- TFTB Assy
cation line.
5 The clock is not MAIN Assy
properly input.
6 Loose connection MAIN Assy
between the MAIN
CPU and SD_RAM
E
7 ————— —————
[12-8] E-7026: AUTH CHIP ERROR
The Apple authentication chip (IC14) for the needle search pad does not work properly.
No. Cause Diagnostics Point
1 Loose connection MAIN Assy
between the MAIN
CPU and
AUTH CHIP
2 ————— —————
F
30
1
2
Item to be Checked
Check that the frequency at Pin 38 (BUSCLK)
of SD_RAM (IC4005) is approx. 98 MHz.
Check that the signals of the TFT_RST
line is H.
Check the connection between the TFT
CPU and FLASH.
Check the connection between the TFT
CPU and SD_RAM.
If the symptom persists after the above
corrections.
Item to be Checked
—————
Check the connections of communication
line between the PANEL CPU (IC8003)
and CDC (IC5001).
If the symptom persists after the above
corrections.
Item to be Checked
—————
Check the power voltages of V+3R3_CPU
and V+1R2_CPU) lines.
Check the connection between the MAIN
CPU and SD_RAM.
Check the connections of communication
line between the MAIN CPU (IC101) and
TFT CPU (IC4001).
Check that the frequency at Pin 38
(CPU_CLKOUT) of SD_RAM (IC108 and
IC109) are approx. 107.9 MHz.
Check the connection between the MAIN
CPU and SD_RAM.
If the symptom persists after the above
corrections.
Item to be Checked
Check the connections of communication
line between the MAIN CPU and
AUTH CHIP.
If the symptom persists after the above
corrections.
CDJ-2000NXS
2
3
Corrective Action
Check the connection of the Oscillator (X4002) and
its periphery. If soldering is improper, resolder it.
Check the connection of the logic IC (IC7).
If soldering is improper, resolder it.
If the signal of the TFT_RST line is L, check the
connection of the logic IC (IC7) and its periphery.
Check the connections between TFT CPU
(IC4001) and FLASH (IC4004).
If soldering is improper, resolder it.
Check the connections between TFT CPU
(IC4001) and SD_RAM (IC4005).
If soldering is improper, resolder it.
Replace the TFT CPU (IC4001).
Corrective Action
If it is judged as NG, the CDC (IC5001) does not
work properly or communication between the
PANEL CPU (IC8003) and CDC (IC5001) is not
established. Proceed as follows:
If soldering is improper, resolder it.
Replace the IC5001.
If the symptom persists, replace the CDCB Assy.
Corrective Action
If it is judged as NG, the MAIN CPU (IC10) or SD_RAM
(IC1, 2, 12 and 13) does not work properly or
communication between the MAIN CPU (IC10) and
TFT CPU (IC4001) is not established. Proceed as follows:
The MAIN CPU requires two power supply systems.
Check the connections of the power supply lines.
If soldering is improper, resolder it.
Check the connections between MAIN CPU
(IC10) and SD_RAM (IC108 and IC109).
If soldering is improper, resolder it.
If soldering is improper, resolder it.
Check the connection of the logic IC (IC10).
If soldering is improper, resolder it.
Check the connections between MAIN CPU
(IC10) and SD_RAM (IC1, 2, 12 and 13).
If soldering is improper, resolder it.
Replace the MAIN Assy.
Corrective Action
Check the connections between MAIN CPU
(IC10) and AUTH CHIP (IC14).
If soldering is improper, resolder it.
Replace the MAIN Assy.
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4
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