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33
DJM-900NXS
5
6
7
8
5
6
7
8
A
B
C
D
E
F
[3] AUDIO OUTPUT
[3-1] No signal is output from the MASTER1/MASTER2 connectors.
9
MAI
N
Assy
LRCLK: IC2206
2,4 pin
BCLK: IC2209
2,4 pin
MCLK: IC2210
2,4 pin
[Checking the CLK signal path]
Check for the LRCLK, BCLK, and MCLK
signals.
• If the signal at Pin 2 is normal and Pin 4 has no
signal, IC2206/IC2209/IC2210 must be improperly
soldered or defective.
• If a signal at Pin 2 is not normal, FPGA (IC2214)
must be improperly soldered or defective.
1
MASTER1 /
MASTER2
Identify the connector(s) that do(es) not
output signals.
• If neither MASTER 1 nor 2 connector outputs, go to [2].
• If only the MASTER 1 connector does not output, go to [11].
• If only the MASTER2 connector does not output, go to [13].
2
MAI
N
Assy
IC2802-10,11,20,
21 pin
IC2803 1,7 pin
/IC2804-1,7 pin
[Checking the Shaping
N
oise Filter]
Check for the DAC differential audio signal
output.
• If a signal is output from the DAC output (Pins 10,
11, 20, and 21 of IC2802) but no signal is output
from Pins 1 and 7 of IC2803/IC2804, the Shaping
N
oise Filter block must be improperly soldered or
defective.
• If no signal is output from the DAC output (Pins
10, 11, 20, and 21 of IC2802), go to [3].
3
MAI
N
Assy
IC2802-29 pin
Check that a signal is output from the
ADAT_MASTER_OUT.
• If no signal is output, the DSP(IC701) must be
improperly soldered or defective.
• If a signal is output, go to [4].
4
MAI
N
Assy
IC2802-1 pin
Check that the M
V
R_MUTE_OUT signal
level is Low.
• If it is H, failure of the P
N
LA may be suspected.
Check for the MASTER LE
V
EL operation in test
mode.
• If it is L, go to [5].
5
MAI
N
Assy
IC2802-27 pin
Check that the RESET_OUT signal level is
High.
• If it is H, go to [8].
• If it is L, go to [6].
6
MAI
N
Assy
IC2601-2,4 pin
Check for the RESET_OUT signal.
• If a signal level at Pin 2 is H and that at Pin 4 is L,
IC2601 must be improperly soldered or defective.
• If the singal level at Pin 2 is L, go to [7].
7
MAI
N
Assy
R709
Check for the mounting status of the RESET
signal line R709.
• If no problem is found, ETHER UCOM (IC501)
must be improperly soldered or defective.
8
MAI
N
Assy
IC2802
LRCLK 30 pin
BCLK 28 pin
MCLK 24 pin
Check for the CLK signal of IC2802.
LRCK, BCLK, MCLK
• If [3], [4], [5], and [8] are normal but a signal is
not output from the DAC (Pins 10, 11, 20, and
21 of IC2802), IC2802 must be improperly
soldered or defective.
• If no CLK signal is found, go to [9].
9
MAI
N
Assy
LRCK: IC2604
2,4 pin
BCLK: IC2603
2,4 pin
MCLK: IC2602
2,4 pin
Check for Pins 2 and 4 of
LRCK: IC2604
BCLK: IC2603
MCLK: IC2602
• If the signal at Pin 2 is normal and Pin 4 has no
signal, IC2604/IC2603/IC2602 must be
improperly soldered or defective.
• If a signal at Pin 2 is not normal, go to [10].
10
MAI
N
Assy
LRCK: IC2205
2,4 pin
BCLK: IC2207
2,4 pin
MCLK: IC2208
2,4 pin
Check for Pins 2 and 4 of
LRCK: IC2205
BCLK: IC2207
MCLK: IC2208
• If the signal at Pin 2 is normal and Pin 4 has no
signal, IC2205/IC2207/IC2208 must be improperly
soldered or defective.
• If a signal at Pin 2 is not normal, FPGA (IC2214)
must be improperly soldered or defective.
11
MAI
N
Assy
IC2806-1,7 pin
IC2805-1,7 pin
Check for the Balanced Output AMP.
• If no signal is output, IC2806/IC2805 must be
improperly soldered or defective.
• If a signal is output, go to [12].
12
MAI
N
Assy
MUTE_M1
Check that the MUTE_M1 (test land) signal
level is Low.
• If it is H, Q2836/Q2837 must be improperly
soldered or defective. If a CPU_MUTE_OUT
signal is not output properly, go to [13].
• If it is L, RY2801/RY2802 must be improperly
soldered or defective.
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Prior
Confirmation
10.41 WA
V
EFORMS
MAI
N
ASSY
10.41 WA
V
EFORMS
MAI
N
ASSY
10.41 WA
V
EFORMS
MAI
N
ASSY
10.41 WA
V
EFORMS
MAI
N
ASSY
10.41 WA
V
EFORMS
MAI
N
ASSY
10.41 WA
V
EFORMS
MAI
N
ASSY
10.41 WA
V
EFORMS
MAI
N
ASSY
10.41 WA
V
EFORMS
MAI
N
ASSY
10.41 WA
V
EFORMS
MAI
N
ASSY
10.41 WA
V
EFORMS
MAI
N
ASSY
10.41 WA
V
EFORMS
MAI
N
ASSY
10.41 WA
V
EFORMS
MAI
N
ASSY
1-44 1-49
1-46 1-47
1-92 1-93
1-94 1-95
1-96 1-97
1-89
1-89
1-84
1-84
1-85
1-85
1-78 1-82
1-78 1-82
1-28
1-28
1-88 1-87 1-86
1-88 1-87 1-86
1-76 1-80
1-75 1-79
1-49 1-44
1-47 1-46
1-98 1-99
1-98 1-99
1-48 1-45
1-49 1-44
1-47 1-46
1-48 1-45
1-77 1-81
1-76 1-80
1-75 1-79
1-77 1-81
1-90 1-91
1-92 1-93
1-94 1-95
1-96 1-97
1-90 1-91
1-45 1-48
1-44 1-49
1-46 1-47
1-45 1-48
1-102
1-102
1-100 1-101
1-100 1-101
Summary of Contents for DJM-900NXS
Page 10: ...10 DJM 900NXS 1 2 3 4 A B C D E F 1 2 3 4 2 2 PANEL FACILITIES ...
Page 11: ...11 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Page 12: ...12 DJM 900NXS 1 2 3 4 A B C D E F 1 2 3 4 ...
Page 15: ...15 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Page 20: ...20 DJM 900NXS 1 2 3 4 A B C D E F 1 2 3 4 4 3 DSP BLOCK DIAGRAM ...
Page 21: ...21 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Page 87: ...87 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Page 189: ...189 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Page 192: ...192 DJM 900NXS 1 2 3 4 A B C D E F 1 2 3 4 A SIDE B A INPUT ASSY CN4003 CN4002 CN5001 CN5401 ...