Dvs - PIONEER DJ DJM-750MK2 Service Manual

5
[4-4] PHONES is not outputted
NO. Cause Diagnosis point
Parts failure MAIN ASSY
xRST_4458
1
IC3507 8pin
Parts failure MAIN ASSY
IC4001
18/19/22/23 pin
2
M50
Parts failure MAIN ASSY
C4602 1/7pin
3
Parts failure MAIN ASSY
IC4601 1/3pin
IC4602 1/3pin
4
Parts failure/ HPJK ASSY
Connection failure CN6601 1/3pin
HPJM ASSY
5
CN6701 1/3pin
A22

[5] DVS

[5-1] USB does not recognized
NO. Cause Diagnosis point
Prior confirmation PC,LINE,PHONO
select switch
0
CH level meter
Power supply MAIN ASSY
abnormal / IC2001
Connection failure 93/94/95 pin
1
M11
M13
5
6
Confirmation item
[Confirming the RESET signal]
Confirm that xRST_4458 signal
becomes HIGH.
M24
[Confirming the audio output]
Check the audio signals (other than
sticking to LOW or HIGH) via relevant
signal route.
M51
[Confirming the audio output]
Check the audio signals (sine wave)
via relevant signal route.
M52
[Confirming the audio output]
Check the audio signals (sine wave)
via relevant signal route.
M53
[Confirming the audio output]
Check the audio signals (sine wave)
via relevant signal route.
A23
Confirmation item
- Confirm that select switch is set to PC.
- Install the latest driver.
- Confirm that DJM-750MK2 utility of PC
is set correctly.
[Power supply]
Confirm that voltage is approximately
5V (4.75 - 5.25V) in the condition that
DJM-750MK2 is connected to the PC.
[D±USB]
Confirm that wave form is generated in
the condition that DJM-750MK2 is
M12 connected to the PC.
M16
DJM-750MK2
6
7
Treatment
- In the case HIGH =>go to [2]
- In the case LOW
=>xRST_4458 signal route may have solder fault.
Check condition of the solder/replace parts.
- In the case that audio signal doesn't exist
=>There is a possibility of failure of the
or AUDIO_CLK. Replace MAIN ASSY.
- In the case that audio signal exists.
In the case that HP is not outputted =>go to [3]
- In the case that audio signal doesn't exist
=>There is a possibility of failure of the IC4602 and
peripheral circuit.
Check condition of the solder/replace parts.
- In the case that audio signal exists =>go to [4]
- In the case that audio signal doesn't exist
=>There is a possibility of failure of the
Q4609-Q4612 and peripheral circuit.
Check condition of the solder/replace parts.
- In the case that audio signal exists =>go to [5]
- In the case that audio signal doesn't exist
=>There is a possibility of failure of the wires.
Replace wires.
- In the case that audio signal exists.
=>There is a possibility of failure of JACK and peripheral circuit .
Check condition of the solder/replace parts.
Treatment
Set correctly.
In the case of abnormality
=>There is a possibility of failure of the MAIN ASSY.
Replace MAIN ASSY.
7
8
Reference
-
-
DSP(IC3001)
waveform M50
waveform M51
-
waveform M52
-
IC4603,
waveform M53
-
waveform M53
Reference
Operating
Instructions
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21
8
A
B
C
D
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F