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29
DJM-900NXS
5
6
7
8
5
6
7
8
A
B
C
D
E
F
[2] AUDIO INPUT
[2-1] No signal is input to the CD/LINE, PHONO connectors.
Prior
Confirmation
DIGITAL, CD/LI
N
E,
PHO
N
O, LI
N
E, USB
*/* selector/TRIM
Confirm on the screen that the selector
is set properly.
Operating
instructions
1
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
I
N
PUT Assy
IC4408/IC4808/
IC5208/IC5608
6 pin
Representative
CH1
[Checking the Audio Timecode select block]
Check that the TC_SEL* signal level is Low.
• If it is low, go to [2].
• If it is high, check for loose connection with the MAI
N
Assy, improper part-mounting status for communica-
tion, or imporper mounting status of the MAI
N
CPU.
If no problem is still found, the MAI
N
CPU (IC201)
may be defective. Replace it.
10.41 WA
V
EFORMS
I
N
PUT ASSY
10.41 WA
V
EFORMS
I
N
PUT ASSY
2
I
N
PUT Assy
IC4406(CH1)
IC4806(CH2)
IC5206(CH3)
IC5606(CH4)
16, 17, 20, 21 pin
Representative
CH1_R-
/CH1_R+
[Checking the ADC block]
10.41 WA
V
EFORMS
I
N
PUT ASSY
Check for an audio signal at the input
connector of ADC.
If no audio signal is input to ADC, a problem in
an analog circuit at a previous stage may be
suspected.
• If no audio signal is input, go to [5].
• If an audio signal is input, go to [3].
10.41 WA
V
EFORMS
I
N
PUT ASSY
10.41 WA
V
EFORMS
I
N
PUT ASSY
10.41 WA
V
EFORMS
I
N
PUT ASSY
10.41 WA
V
EFORMS
I
N
PUT ASSY
10.41 WA
V
EFORMS
I
N
PUT ASSY
3
I
N
PUT Assy
IC4406(CH1)
IC4806(CH2)
IC5206(CH3)
IC5606(CH4) - 1 pin
Representative CH1
Check for the RESET signal of ADC.
• If the RESET signal level is L, go to [9].
• If the RESET signal level is H, go to [4].
4
I
N
PUT Assy
IC4406(CH1)
IC4806(CH2)
IC5206(CH3)
IC5606(CH4)
LRCK: 3 pin
Representative
BCLK: 4 pin
Representative
MCLK: 5 pin
Representative
10.41 WA
V
EFORMS
I
N
PUT ASSY
Check for the CLK signal of ADC.
• If no CLK signal is input, go to [11].
• If the CLK signal is input, ADC must be
improperly soldered or defective.
5
I
N
PUT Assy
IC4402(CH1)
IC4802(CH2)
IC5202(CH3)
IC5602(CH4)
Input: 2, 3, 5, 6 pin
Representative CH1
after TRIM
Output: 1, 7 pin
Representative CH1
R
[Checking an Intermediate Buffer block]
Check for the signal input to and output
from the Intermediate Buffer block.
• If a singal is input but not output, this block
must be improperly soldered or defective.
• If no signal is input, go to [6].
6
I
N
PUT Assy
C
N
4201(CH1)
C
N
4601(CH2)
C
N
5001(CH3)
C
N
5401(CH4)
1 pin, 3 pin, 5 pin,
7 pin
Representative CH1
R
[Checking the TRIM]
Check for an audio signal at the periphery
of TRIM.
• If a signal is interrupted at the periphery of
TRIM, check for the mounting status or
soldering status of TRIM. If no problem is found,
replace the TRIM Assy.
• If there is no signal before TRIM, go to [7].
7
I
N
PUT Assy
IC4201(CH1 PHO
N
O)
IC4202(CH1 LI
N
E)
IC4601(CH2 CD)
IC4602(CH2 LI
N
E)
IC5001(CH3 CD)
IC5002(CH3 LI
N
E)
IC5401(CH4 PHO
N
O)
IC5402(CH4 CD)
1 pin, 7 pin
Representative CH1
LI
N
E R
[Checking the Input Buffer block]
Check if an audio signal is output from the
operation amplifier.
• If no singal is output, this block must be
improperly soldered or defective.
• If an audio signal is output, go to [8].
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
2-32
2-32
2-20
2-32
2-32
2-22
2-22
2-23
2-23
2-18
2-18
2-19
2-19
2-17
2-16
2-16
2-18
2-17 2-18
2-24
2-24
2-25
2-25
2-21
2-20 2-21
Содержание DJM-900NXS
Страница 10: ...10 DJM 900NXS 1 2 3 4 A B C D E F 1 2 3 4 2 2 PANEL FACILITIES ...
Страница 11: ...11 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 12: ...12 DJM 900NXS 1 2 3 4 A B C D E F 1 2 3 4 ...
Страница 15: ...15 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 20: ...20 DJM 900NXS 1 2 3 4 A B C D E F 1 2 3 4 4 3 DSP BLOCK DIAGRAM ...
Страница 21: ...21 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 87: ...87 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 189: ...189 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 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 ...
Страница 193: ...193 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F A SIDE B LF DWX3193 INPUT DWX DNP2625 B CN6201 CN4201 CN4601 1 ...