Pioneer DJM-900NXS Service Manual

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CONTENTS
SAFETY INFORMATION..........................................................................................................................................................2
1. SERVICE PRECAUTIONS ....................................................................................................................................................6
1.1 NOTES ON SOLDERING ...............................................................................................................................................6
1.2 NOTES ON REPLACING................................................................................................................................................6
1.3 SERVICE NOTICE ..........................................................................................................................................................6
1.4 ON MODIFICATION OF THE VOLTAGE-MONITORING CIRCUITS...............................................................................7
2. SPECIFICATIONS .................................................................................................................................................................9
2.1 SPECIFICATIONS...........................................................................................................................................................9
2.2 PANEL FACILITIES.......................................................................................................................................................10
3. BASIC ITEMS FOR SERVICE.............................................................................................................................................13
3.1 CHECK POINTS AFTER SERVICING..........................................................................................................................13
3.2 JIGS LIST......................................................................................................................................................................13
3.3 PCB LOCATIONS .........................................................................................................................................................14
4. BLOCK DIAGRAM...............................................................................................................................................................16
4.1 OVERALL WIRING DIAGRAM......................................................................................................................................16
4.2 AUDIO SYSTEM BLOCK DIAGRAM ............................................................................................................................18
4.3 DSP BLOCK DIAGRAM................................................................................................................................................20
4.4 POWER BLOCK DIAGRAM..........................................................................................................................................22
5. DIAGNOSIS.........................................................................................................................................................................24
5.1 POWER ON SEQUENCE .............................................................................................................................................24
5.2 TROUBLESHOOTING ..................................................................................................................................................26
5.3 INFORMATION ON POWER DIAGNOSTICS...............................................................................................................40
5.4 VOLTAGE MONITORING CIRCUIT ..............................................................................................................................41
5.5 ABOUT THE PROTECTOR ..........................................................................................................................................43
5.6 DIAGNOSIS OF V+34D ................................................................................................................................................44
5.7 ERROR INDICATIONS..................................................................................................................................................45
5.8 CONNECTION CHECK WIT
H EACH INTERFACE ......................................................................................................46
6. SERVICE MODE .................................................................................................................................................................47
6.1 TEST MODE .................................................................................................................................................................47
6.2 ABOUT THE DEVICE ...................................................................................................................................................64
7. DISASSEMBLY....................................................................................................................................................................65
8. EACH SETTING AND ADJUSTMENT ................................................................................................................................75
8.1 NECESSARY ITEMS TO BE NOTED ...........................................................................................................................75
8.2 UPDATING OF THE FIRMWARE..................................................................................................................................75
8.3 HOW TO CONFIRM THE DVS......................................................................................................................................81
8.4 USER SETABLE ITEMS ...............................................................................................................................................85
8.5 SHEET FOR CONFIRMATION OF THE USER SETTING ...........................................................................................86
9. EXPLODED VIEWS AND PARTS LIST...............................................................................................................................88
9.1 PACKING SECTION......................................................................................................................................................88
9.2 EXTERIOR SECION.....................................................................................................................................................90
9.3 BOTTOM SECTION ......................................................................................................................................................92
9.4 CONTROL PANEL SECTION (1/2)...............................................................................................................................94
9.5 CONTROL PANEL SECTION (2/2)...............................................................................................................................96
10. SCHEMATIC DIAGRAM ....................................................................................................................................................98
10.1 INPUT ASSY (1/11) ....................................................................................................................................................98
10.2 INPUT ASSY (2/11) ..................................................................................................................................................100
10.3 INPUT ASSY (3/11) ..................................................................................................................................................102
10.4 INPUT ASSY (4/11) ..................................................................................................................................................104
10.5 INPUT ASSY (5/11) ..................................................................................................................................................106
10.6 INPUT ASSY (6/11) ..................................................................................................................................................108
10.7 INPUT ASSY (7/11) ..................................................................................................................................................110
10.8 INPUT ASSY (8/11) ..................................................................................................................................................112
10.9 INPUT ASSY (9/11) ..................................................................................................................................................114
10.10 INPUT ASSY (10/11) ..............................................................................................................................................116
10.11 INPUT ASSY
(11/11)
..............................................................................................................................................118
10.12 MIC1 and TRM1 to TRM4 ASSYS..........................................................................................................................120
10.13 MAIN ASSY (1/21) ..................................................................................................................................................122
10.14 MAIN ASSY (2/21) ..................................................................................................................................................124
10.15 MAIN ASSY (3/21) ..................................................................................................................................................126
10.16 MAIN ASSY (4/21) ..................................................................................................................................................128
10.17 MAIN ASSY (5/21) ..................................................................................................................................................130
10.18 MAIN ASSY (6/21) ..................................................................................................................................................132
10.19 MAIN ASSY (7/21) ..................................................................................................................................................134
10.20 MAIN ASSY (8/21) ..................................................................................................................................................136

Pioneer DJM-900NXS Specifications

General

Sample rate	96 kHz
Frequency range	20 - 20000 Hz
Channels quantity	4 channels
Digital sound processing	24 bit
Number of EQ bands per channel	3
Line Signal-to-Noise Ratio (SNR)	107 dB
Total Harmonic Distortion (THD)	0.004 %
Microphone in	Yes
Line inputs (RCA)	6
Phono inputs (RCA)	2
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Digital audio coaxial out	1
Power consumption (typical)	42 W