PIONEER DJ XDJ-XZ Service Manual page 29

5
Trouble in the audio system
[Confirmation work in advance]
1 It discriminates defective area in the input and output
Refer to "5.3 SIMPLIFIED DIAGNOSTIC PROCEDURE FOR AUDIO SIGNAL", divide which of input and output has defects.
If all signal has defect, it has the defect on the power of audio, the clock of audio or the circuit near DSP.
2 It confirms whether there is a problem with the display or the operation.
Refer to "6.1 TEST MODE", it confirms whether there is a problem with the display or the operation.
If it has defect, repair the defective area. (Refer to flowchart about "Display trouble", "Operation trouble".)
[1] Error in output section
No sound outputs from MASTER1/2.
5
6
Input the audio signal to the input terminal.
Or, playback via USB terminals.
No
Is signal output from neither
MASTER1 nor MASTER2?
Yes
No
Is MAS_MUTE
"H" (12 V)?
Yes
Is MAS_VR_MUTE
"H" (3.3 V)?
No
Check the periphery of Q6901/Q6904. If no
problem, replace the Q6901/Q6904.
If not improve, replace the AUDIO Assy.
Are there audio signals at Are there audio signals at
Yes
Pins 32, 33, 36, 37 (R-, R +, L-, L +) Pins 32, 33, 36, 37 (R-, R +, L-, L +)
of IC5802 of AUDIO Assy? of IC5802 of AUDIO Assy?
No
Are there audio signals at Pin 6 Are there audio signals at Pin 6
(ADAT_M) of IC5802 of AUDIO Assy? (ADAT_M) of IC5802 of AUDIO Assy?
Yes
The MASTER DAC (IC5802) is in failure.
Replace MASTER DAC (IC5802).
If not improve, replace the AUDIO Assy.
Is the audio signal Is the audio signal
interrupted around the muting interrupted around the muting
transistors in the AUDIO Assy? transistors in the AUDIO Assy?
No
XDJ-XZ
6
7
Muting is activated. The MUTE circuit in the
Yes
AUDIO Assy is in failure.
Replace the AUDIO Assy.
No data is input to the DAC (IC5802).
No
Check the connection between DSP (IC2501)
and DAC (IC5802).
If no problem, replace the MAIN Assy.
The muting transistors in the AUDIO Assy are
defective, which disables audio signal output.
Check the periphery of the muting transistors.
Yes
If no problem, then the muting transistors must
be replaced.
! AUDIO Assy:
Replace Q6014, Q6015, Q6016, Q6017
Check for a point in the AUDIO Assy where
the audio signal is interrupted.
• If only MASTER 1 has no audio signal
output, check the periphery of IC4507/
IC4508. If no problem, then the OP
amplifiers must be replaced.
AUDIO Assy: Replace IC6001, IC6002
• If only MASTER2 has no audio signal
output, check the periphery of IC6003,
the capacitor or resistor is damaged or if
any circuit is open. If not improve, replace
AUDIO Assy.
7
8
A
B
C
D
E
F
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