Pioneer CDJ-2000NXS2 Service Manual page 29

5
No. Cause Diagnostics Point
6 Loose connection MAIN Assy
between the MAIN
CPU and SDRAM
7 ————— —————
[11-7] E-8308: SD CARD ACCESS ERROR
Check the following, with an SD card inserted in the SD card slot.
No. Cause Diagnostics Point
1 Loose connections MAIN Assy,
in the communi-
SDCB Assy
cation line.
2 Defective MAIN Assy
MAIN CPU
[12] Power Monitoring
The Standby LED flashes, and the unit does not start up.
No. Cause Diagnostics Point
1 Poor connection LCDB Assy
of the voltage-
monitoring circuit
5
6
Item to be Checked
Check the connection between the MAIN
CPU (IC10) and SDRAM (IC1, IC2).
If the symptom persists after the above
corrections.
Item to be Checked
Check the connection of the SD serial
communication line.
If the symptom persists after the above
corrections.
Item to be Checked
Check the VDET voltage level.
If it is L, one or more of the error detection
functions was activated.
CDJ-2000NXS2
6
7
Corrective Action
Check the connections between MAIN CPU
(IC10) and DDR2 (IC1, IC2).
The signal line may be loosely connected.
Correct it if it is.
Replace the MAIN Assy.
Corrective Action
The communication line may be loosely
connected. Correct it if it is.
The MAIN CPU (IC10) is defective.
Replace the MAIN CPU (IC10).
Corrective Action
If the base of Q4201 or Q4202 is H, the excess
current detection circuit for V+12_JFL or
V+12_LED, respectively, was activated.
Check the load circuit.
If the anode of D4206, D4205, or D4204 is H,
the excess voltage detection circuit was
activated.
7
8
A
Reference
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Reference
10.27 WAVEFORMS
B
5
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Reference
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C
D
E
F
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