Pioneer CDJ-2000, Service Manual

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55
CDJ-2000
5 6 7 8
5 6 7 8
A
B
C
D
E
F
[6] Output of the alarm port
Although " N ormal/abnormalities of each device at the time of power supply O N and initialization" can be judged by
Auto device diagnosis of a "[3] Indication of various information", the test port output on a main board can also be
checked.
When a defect is detected by the device by power supply O
N , an alarm port performs the following pulse outputs.
Alarm Port
Service Mode/Auto Device Diagnostic Display
Normal
Error
Display
Detection
Remarks
Output Pattern
Display
Remarks
Main CPU
×
⎯ ⎯ ⎯
⎯ ⎯ ⎯
× × ×
Flash (for Main CPU)
If Flash is
N
G, the boot program itself does not operate.
×←
← ← ← ←
_ _ _ _ _
SDRAM (for Main CPU)
(0.5sHI->0.5sLOW) x once ->2sLOW->Afterward,repetition
×
If SDRAM is
N
G, the service program
itself does not operate.
Peripheral with built-in Main CPU
IDE (DRI
V
E)
(0.5sHI->0.5sLOW) x 7 times ->2sLOW->Afterward,repetition
E-7001
USB-A
Since it is built-in Main CPU, it is hard to consider that peripheral one of these becomes out of condition at pinpoint. It cannot judge whether all have fault in the course to a connector.
D
S
LA
N
External peripheral
USB-B (USB CO
N
TROLLER)
(0.5sHI->0.5sLOW) x 4 times ->2sLOW->Afterward,repetition
_ _
E-7020
PHY chip (PHY CHIP)
(0.5sHI->0.5sLOW) x 3 times ->2sLOW->Afterward,repetition
_
E-7021
Device communicated with Main CPU
PA
N
EL microcomputer
(PA
N
EL)
(0.5sHI->0.5sLOW) x 5 times ->2sLOW->Afterward,repetition
"
Although detection is possible in communi- cation failure, since it does not put into the service mode, a check is correctly impossible.
E-7022
_ _
DSP (DSP)
(0.5sHI->0.5sLOW) x twice ->2sLOW->Afterward,repetition
_
E-7010
SDRAM (for DSP)
If SDRAM is
N
G, it cannot communicate with Main CPU.
×
GUI CPU (GUI)
(0.5sHI->0.5sLOW) x 6 times ->2sLOW->Afterward,repetition
"
Although detection is possible in communi- cation failure, since it cannot display on LCD, a check is correctly impossible.
Flash (for GUI CPU)
If Flash is
N
G, the boot program itself does not operate.
×
SDRAM (for GUI CPU)
If SDRAM is
N
G, it cannot communicate with Main CPU.
×
_
CDC
(0.5sHI->0.5sLOW) x 8 times ->2sLOW->Afterward,repetition
_
E-7025
Altogether normal
After 2sHI as LOW
External peripheral communicated with PA
N
EL microcomputer