Pioneer CDJ-2000 Service Manual page 40

1
A
[12-5] E-7023: GUI CPU ERROR
The TFT CPU (IC4001)does not work properly.
No. Cause Diagnostics Point
1
Power is not
2 TFTB Assy
supplied properly.
B
The clock is not
3 TFTB Assy
properly input.
The RESET
TFTB Assy
4 signal is not
MAIN Assy
properly input.
Loose connection
5 between the TFT TFTB Assy
CPU and FLASH
Loose connection
6 between the TFT TFTB Assy
CPU and SD_RAM
C
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
Loose connections
Related point
2
in the communica-
CDCB Assy
tion line.
D
Defective
3 CDCB Assy
CDCB Assy
[12-7] E-8709: COMMUNICATION ERROR
Communication between the TFT CPU (IC4001) and MAIN CPU (IC101) is not possible.
No. Cause Diagnostics Point
1
Power is not
2 MAIN Assy
supplied properly.
E
Loose connection
3 between the MAIN MAIN Assy
CPU and SD_RAM
Loose connections
MAIN Assy
4 in the communica-
TFTB Assy
tion line.
The clock is not
5 MAIN Assy
properly input.
Loose connection
between the MAIN
6 MAIN Assy
F CPU and SD_RAM
7
40
1
2
Item to be Checked
-
Check the power voltages of V+3R3T_BF
and V+1R2BF) lines.
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,
2
3
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 (IC101)
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.
Check the connection of the Oscillator (X4002) and
its periphery. If soldering is improper, resolder it.
Check the connection of the logic IC (IC122).
If soldering is improper, resolder it.
If the signal of the TFT_RST line is L, check the
connection of the logic IC (IC122) 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(IC101) or SD_RAM
(IC108 and IC109) does not work properly or communi-
cation between the MAIN CPU (IC101) 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 (IC101)
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 (IC101).
If soldering is improper, resolder it.
Check the connections between MAIN CPU (IC101)
and SD_RAM (IC108 and IC109).
If soldering is improper, resolder it.
Replace the MAIN Assy.
CDJ-2000
3
4
Reference
10.9 TFTB
ASSY (1/2)
10.9 TFTB
ASSY (1/2)
10.3 MAIN
ASSY (1/3)
10.9 TFTB
ASSY (1/2)
10.9 TFTB
ASSY (1/2)
Reference
10.11 PNLB
ASSY
10.13 CDCB and
SDSW ASSYS
Reference
10.3 MAIN
ASSY (1/3)
10.9 TFTB
ASSY (1/2)
10.3 MAIN
ASSY (1/3)
10.3 MAIN
ASSY (1/3)
10.3 MAIN
ASSY (1/3)
4