Pioneer CDJ-2000, Service Manual

Page: 40 / 166

40
CDJ-2000
1 2 3 4
A
B
C
D
E
F
1 2 3 4
[12-5] E-7023: GUI CPU ERROR
[12-6] E-7025: CDC DE V ICE ERROR
[12-7] E-8709: COMMU N ICATIO N ERROR
10.9 TFTB
ASSY (1/2)
10.9 TFTB
ASSY (1/2)
10.9 TFTB
ASSY (1/2)
10.9 TFTB
ASSY (1/2)
10.3 MAI
N
ASSY (1/3)
10.11 P N LB
ASSY
10.13 CDCB and
SDSW ASSYS
10.9 TFTB
ASSY (1/2)
10.3 MAI
N
ASSY (1/3)
10.3 MAI N
ASSY (1/3)
10.3 MAI N
ASSY (1/3)
10.3 MAI N
ASSY (1/3)
The TFT CPU (IC4001)does not work properly.
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
1 -
If it is judged as N G, the TFT CPU (IC4001), FLASH
(IC4004) or SD_RAM (IC4005) does not work properly
or communication between the MAI
N CPU (IC101)
and TFT CPU (IC4001) is not established. Proceed as
follows: See also “[4-2]
N o communication via the USB
connector (Type B).”
2
Power is not
supplied properly.
TFTB Assy
Check the power voltages of V +3R3T_BF
and V +1R2BF) lines.
The TFT CPU requires two power supply systems.
Check the connections of the power supply lines.
If soldering is improper, resolder it.
3
The clock is not
properly input.
TFTB Assy
Check that the frequency at Pin 38 (BUSCLK)
of SD_RAM (IC4005) is approx. 98 MHz. Check the connection of the Oscillator (X4002) and
its periphery. If soldering is improper, resolder it.
4
The RESET
signal is not
properly input.
TFTB Assy
MAI
N Assy
Check that the signals of the TFT_RST
line is H.
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.
5
Loose connection
between the TFT
CPU and FLASH
TFTB Assy
Check the connection between the TFT
CPU and FLASH.
Check the connections between TFT CPU (IC4001)
and FLASH (IC4004).
If soldering is improper, resolder it.
6
Loose connection
between the TFT
CPU and SD_RAM
TFTB Assy
Check the connection between the TFT
CPU and SD_RAM.
Check the connections between TFT CPU (IC4001)
and SD_RAM (IC4005).
If soldering is improper, resolder it.
7 -
If the symptom persists after the above
corrections,
Replace the TFT CPU (IC4001).
The CDC device (IC5001) for the needle search pad does not work properly.
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
1 -
If it is judged as N G, the CDC (IC5001) does not work
properly or communication between the PA N EL CPU
(IC8003) and CDC (IC5001) is not established.
Proceed as follows:
2
Loose connections
in the communica-
tion line.
Related point
CDCB Assy
Check the connections of communication
line between the PA
N EL CPU (IC8003)
and CDC (IC5001).
If soldering is improper, resolder it.
3
Defective
CDCB Assy
CDCB Assy
If the symptom persists after the above
corrections,
Replace the IC5001.
If the symptom persists, replace the CDCB Assy.
Communication between the TFT CPU (IC4001) and MAI N CPU (IC101) is not possible.
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
1 -
If it is judged as N G, the MAI N CPU(IC101) or SD_RAM
(IC108 and IC109) does not work properly or communi-
cation between the MAI
N CPU (IC101) and TFT CPU
(IC4001) is not established. Proceed as follows:
2
Power is not
supplied properly.
MAI N Assy
Check the power voltages of V +3R3_CPU
and V +1R2_CPU) lines.
The MAI N CPU requires two power supply systems.
Check the connections of the power supply lines.
If soldering is improper, resolder it.
3
Loose connection
between the MAI
N
CPU and SD_RAM
MAI N Assy
Check the connection between the MAI N
CPU and SD_RAM.
Check the connections between MAI N CPU (IC101)
and SD_RAM (IC108 and IC109).
If soldering is improper, resolder it.
4
Loose connections
in the communica-
tion line.
MAI N Assy
TFTB Assy
Check the connections of communication
line between the MAI
N CPU (IC101) and
TFT CPU (IC4001).
If soldering is improper, resolder it.
5
The clock is not
properly input.
MAI N Assy
Check that the frequency at Pin 38 (CPU_
CLKOUT) of SD_RAM (IC108 and IC109) are
approx. 107.9 MHz.
Check the connection of the logic IC (IC101).
If soldering is improper, resolder it.
6
Loose connection
between the MAI
N
CPU and SD_RAM
MAI N Assy
Check the connection between the MAI N
CPU and SD_RAM.
Check the connections between MAI N CPU (IC101)
and SD_RAM (IC108 and IC109).
If soldering is improper, resolder it.
7 -
If the symptom persists after the above
corrections,
Replace the MAI N Assy.