Pioneer DJM-900NXS Service Manual page 36

1
A
No. Cause Diagnostics Point
MAIN Assy
IC3406
HP_L1/HP_L2
Loose connection
5
1-140 1-142
/defective parts
HP_R1/HP_R2
1-141 1-143
MAIN Assy
IC3405
Loose connection HP_L+/L-/L1
6
/defective parts
1-136 1-137 1-140
HP_R+/R-/R1
1-139 1-138 1-141
B
Loose connection
MAIN Assy
7
/defective parts
IC3404-3 pin
Loose connection
MAIN Assy
8
/defective parts
IC3404-5 pin
MAIN Assy
LRCK: IC3201-4 pin
1-135
Loose connection
9
BCLK: IC3201-2 pin
/defective parts
1-134
MCLK: IC3201-1 pin
1-133
C
[3-6] No signal is output from the DIGITAL MASTER OUT connector.
No. Cause Diagnostics Point
Loose connection
MAIN Assy
1
/defective parts
IC2405-16 pin
MAIN Assy
DIT_RESET: 31 pin
1-69
LRCK_DOUT: 24 pin
D
1-71
Loose connection
2
BCLK_DOUT: 26 pin
/defective parts
1-72
DAUX: 28 pin
XTI: 30 pin
DIT_TXD: 33 pin
DIT_SCK: 34 pin
DITD_CS: 35 pin
E
MAIN Assy
DOUT_SRC_RESET:
5 pin
SRC_LRCK: 7 pin
1-61
SRC_BCLK: 8 pin
Loose connection
3
1-62
/defective parts
ADAT_DOUT: 9 pin
1-60
MS_SEL: 15 pin
1-64
F
36
1
2
Item to be Checked
Check the audio signals input to and output
from IC3406.
Check the audio signals input to and output
from IC3405.
Check that a signal is supplied to the
1-131 ADAT_HP.
Check that the DIR_ADC_DAC_RESET
signal level is High.
1-132
Check for the CLK signal of the IC3404.
Item to be Checked
Check for the signal at Pin 16 of DIT
1-74
(IC2405).
Check for input signal at each points of IC2405.
• A signal level at Pin 31 of the DIT_RESET
must be High.
• LRCK_DOUT: 24 pin
• BCLK_DOUT: 26 pin
• DAUX: 28 pin
• XTI: 30 pin
• DIT_TXD: 33 pin
1-65
• DIT_SCK: 34 pin
1-66
• DITD_CS: 35 pin
1-67
Check for input signal at each points of DOUT
1-63
SRC (IC2404).
• A signal level at Pin 5 of the DOUT_SRC_
RESET must be High.
• SRC_LRCK: 7 pin
• SRC_BCLK: 8 pin
• ADAT_DOUT: 9 pin
• MS_SEL: 15 pin
2
3
• If a signal is interrupted at the periphery of
IC3406, IC3406 or peripheral parts must be
improperly soldered or defective.
• If no signal is input to IC3406, go to [6].
• If a signal is interrupted at the periphery of
IC3405, IC3405 or peripheral parts must be
improperly soldered or defective.
• If no signal is input to IC3405, go to [7].
• If no signal is found, DSP(IC701) must be
improperly soldered or defective.
• If a signal is found, go to [8].
• If it is H, go to [9].
• If it is L, check for R709. If no problem is found,
ETHER UCOM (IC501) must be improperly
soldered or defective.
• If a CLK signal is not found, go to [9] of [3-1] No
signal is output from the MASTER1/MASTER2
connectors.
• If a signal is output, parts between IC2405 and
JA2401 must be improperly soldered or defective.
• If no signal is output, go to [2].
• If Pin 31 of DIT_RESET is not High, check for
R710. If no problem is found, Ether UCOM (IC501)
must be improperly soldered or defective.
• If the signals at Pin 24 of LRCK, Pin 26 of BCLK,
and Pin 28 of DAUX are not normal, go to [3].
• If the signal at Pin 30 of XTI is not normal and no
problem is found on IC2403, FPGA (IC2214) must
be improperly soldered or defective.
• If signals at Pin 33 of the DIT_TXD, Pin 34 of the
DIT_SCK, and Pin 35 of the DITD_CS are not
normal, MAIN UCOM (IC2011) must be improperly
soldered or defective.
• If both are normal and no signal is detected at Pin
16 of IC2405, IC2405 must be improperly soldered
or defective.
• If Pin 5 of DOUT_SRC_RESET is not High, check
for R708. If no problem is found, Ether UCOM
(IC501) must be improperly soldered or defective.
• If the signals at Pin 7 of the LRCK and Pin 8 of the
SCLK are not normal but no problem is found on
IC2401/IC2402, FPGA (IC2214) must be
improperly soldered or defective.
• If no signal is found at Pin 9 of the ADAT_DOUT,
DSP (IC701) must be improperly soldered or
defective.
• If the signal at Pin 15 of the MS_SEL is not
normal and Q2403/Q2402/Q2401 do not function
properly, they must be improperly soldered or
defective. If the DOUT_MS_SEL signal is not
supplied properly, check for R711. If no problem is
found, Ether UCOM (IC501) must be improperly
soldered or defective.
• If both are normal and no signal is output from
IC2404, IC2404 must be improperly soldered or
defective.
DJM-900NXS
3
4
Corrective Action
10.41 WAVEFORMS
MAIN ASSY
10.41 WAVEFORMS
MAIN ASSY
10.41 WAVEFORMS
MAIN ASSY
10.41 WAVEFORMS
MAIN ASSY
10.41 WAVEFORMS
MAIN ASSY
Corrective Action
10.41 WAVEFORMS
MAIN ASSY
10.41 WAVEFORMS
MAIN ASSY
10.41 WAVEFORMS
MAIN ASSY
4
Reference
1-140 1-142
1-141 1-143
1-136 1-137 1-140
1-139 1-138 1-141
1-131
1-132
1-135
1-134
1-133
Reference
1-74
1-69 1-71
1-72 1-70
1-68 1-65
1-66 1-67
1-63 1-61
1-62 1-60
1-64