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For U.S.A., Canada, Europe, U.K.,
Asia, China, Taiwan R.O.C., Korea
& Japan model
Ver. 1
SERVICE MANUAL
MODEL DN-X300
DJ MIXER
For purposes of improvement, specifications and
design are subject to change without notice.
Please use this service manual with referring to the
operating instructions without fail.
Some illustrations using in this service manual are
slightly different from the actual set.
TOKYO, JAPAN
X0212V.01 DE/CDM 0408
DN-X300
SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.
LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis
resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the
power cord is less than 460 kohms, the unit is defective.
500V
1M
(1)
(2)
(1)
(2)
2
DN-X300
DISASSEMBLY
(Follow the procedure below in reverse order when reassembling.)
1. Top Panel
(1) Pull out the Knobs from the Top Panel.
(2) Remove the 6 screws attaching the Top Panel.
(3) Pull up the Front Panel.
Note:
Be careful in the attachment direction.
3
DN-X300
2. Crossfader Unit
(1) Remove the 2 screws attaching the Crossfader Unit.
(2) Pull up the Crossfader Unit and disconnect the connector.
Note:
Be careful in the attachment direction.
3. Channel Fader Unit
(1) Remove the 3 screws attaching the Channel Fader Unit.
(2) Pull up the Channel Fader Unit and disconnect the connector.
4
DN-X300
4. Input Selector Unit
(1) Remove the 2 screws attaching the Input Selector Unit.
(2) Pull up the Input Selector Unit and disconnect the connector.
Note:
Be careful in the attachment direction.
5. Top Panel Unit
(1) Remove the 6 screws from the both-sides side.
(2) Remove the 2 screws from the rear side.
(3) Remove the 5 screws from the front side.
(4) Remove the 4 screws from the bottom side.
(5) Pull up the front side of the Top Unit.
(6) Disconnect the connectors.
5
DN-X300
BLOCK DIAGRAM
6
DN-X300
Only major semiconductors are shown, general semiconductors etc. are omitted to list.
1. IC's
MAX003 (IC801)
75 51
76 50
100 26
1 25
MAX003 Terminal Function
Pin
Pin Name Symbol I/O Det Int Pu Ext Res Ini Function
No.
VCL(capacitor between this pin and GND)in 5V operation models,and
1 VCL VCL - - - - - -
as Vcc in 3V operation models.
2 PB0 CH1FS I - - Pu L H CH1 FADER START SW 'L' : ON
3 PB1 PB1 O - - Pu L L Not used
4 PB2 PB2 O - - Pu L L Not used
5 PB3 PB3 O - - Pu L L Not used
6 PB4 PB4 O - - Pu L L Not used
7 PB5 PB5 O - - Pu L H Not used
8 PB6 FX2SW I - - Pu L H PGM2 EFFECT LOOP ON/OFF SW 'L' : ON (DN-X300 only)
9 PB7 CHREV I - - Pu L H CH REVERSE SW 'L' : ON
10 _RESO _RESO O - - - - - Not used
11 Vss Vss - - - - - - GND(0V)
12 P90 P90 O - - - L L Not used
13 P91 P91 O - - - L L Not used
14 P92 P92 O - - - L L Not used
15 P93 P93 O - - - L L Not used
16 P94 P94 O - - - L L Not used
17 P95 P95 O - - - L L Not used
18 P40 P40 O - ON - L L Not used
19 P41 P41 O - ON - L L Not used
20 P42 P42 O - ON - L L Not used
21 P43 PC1A I/O - ON - L H PGM1 Fader PLAY output 30msec 'L' pulse
22 Vss Vss - - - - - - GND(0V)
23 P44 PC1B I/O - ON - L H PGM1 Fader CUE output 30msec 'L' pulse
24 P45 PC2A I/O - ON - L H PGM2 Fader PLAY output 30msec 'L' pulse
25 P46 PC2B I/O - ON - L H PGM2 Fader CUE output 30msec 'L' pulse
26 P47 P47 O - ON - L L Not used
27 D8 D0 D/I - - - - - Data bus
28 D9 D1 D/I - - - - - Data bus
29 D10 D2 D/I - - - - - Data bus
30 D11 D3 D/I - - - - - Data bus
31 D12 D4 D/I - - - - - Data bus
32 D13 D5 D/I - - - - - Data bus
7
DN-X300
Pin
Pin Name Symbol I/O Det Int Pu Ext Res Ini Function
No.
33 D14 D6 D/I - - - - - Data bus
34 D15 D7 D/I - - - - - Data bus
35 Vcc Vcc - - - - - - Power supply(+5V)
36 A0 A0 A/O - - - - - Address bus
37 A1 A1 A/O - - - - - Address bus
38 A2 A2 A/O - - - - - Address bus
39 A3 A3 A/O - - - - - Address bus
40 A4 A4 A/O - - - - - Address bus
41 A5 A5 A/O - - - - - Address bus
42 A6 A6 A/O - - - - - Address bus
43 A7 A7 A/O - - - - - Address bus
44 Vss Vss - - - - - - GND(0V)
45 A8 A8 A/O - - - - - Address bus
46 A9 A9 A/O - - - - - Address bus
47 A10 A10 A/O - - - - - Address bus
48 A11 A11 A/O - - - - - Address bus
49 A12 A12 A/O - - - - - Address bus
50 A13 A13 A/O - - - - - Address bus
51 A14 A14 A/O - - - - - Address bus
52 A15 A15 A/O - - - - - Address bus
53 A16 A16 A/O - - - - - Address bus
54 A17 A17 A/O - - - - - Address bus
55 P52 _FX1ON O - ON - L H PGM1 EFFECT LOOP enabler 'L' : enabler (DN-X300 only)
56 P53 _FX2ON O - ON - L H PGM2 EFFECT LOOP enabler 'L' : enabler (DN-X300 only)
57 Vss Vss - - - - - - GND(0V)
58 P60 LEDFX1 O - - Pu L H PGM1 EFFECT LOOP LED control. (DN-X300 only)
59 P61 LEDFX2 O - - Pu L H PGM2 EFFECT LOOP LED control. (DN-X300 only)
60 P62 FX1SW I - - - L H PGM1 EFFECT LOOP ON/OFF SW 'L' : ON (DN-X300 only)
61 P67 P67 I - - - H H DN-X100/300 program selected Pin 'L' : DN-X300
62 _STBY _STBY - - - - - H When driven low,this pin forces a transition to hardware standby mode.
63 _RES _RES - - - - - - Reset signal 'L' : Reset
64 NMI NMI I - - Pu - H Not used
65 Vss Vss - - - - - - GND(0V)
66 EXTAL EXTAL - - - - - - OSC 16MHz
67 XTAL XTAL - - - - - - OSC 16MHz
68 Vcc Vcc - - - - - - Power supply(+5V)
69 _AS _AS - - - - - - Not used
70 _RD _RD O - - - - - Goes low to indicate reading from the external address space
71 _HWR _HWR - - - - - - Not used
72 P66 JDET I - - - L H Check Send Return jack inserted
73 MD0 MD0 I - - - - - IC Operating mode control
74 MD1 MD1 I - - - - - IC Operating mode control
75 MD2 MD2 I - - - - - IC Operating mode control
76 Avcc Avcc - - - - - - Power supply pin for the A/D converters(+5V).
77 Vref Vref - - - - - - Reference voltage input pin for the A/D converters(+5V).
78 P70,AN0 CH1FADER I - - - - Hi-z CH1 FADER VR A/D converter
79 P71,AN1 CFFADER I - - - - Hi-z CROSS FADER VR A/D converter
80 P72,AN2 CH2FADER I - - - - Hi-z CH2 FADER VR A/D converter
81 P73,AN3 CH1CUREV I - - - - Hi-z CH1 FADER CONTOUR VR A/D converter
82 P74,AN4 CFCUREV I - - - - Hi-z CROSS FADER CONTOUR VR A/D converter
83 P75,AN5 CH2CUREV I - - - - Hi-z CH2 FADER CONTOUR VR A/D converter
84 P76,AN6 AN6 I - - - - Hi-z Not used
85 P77,AN7 AN7 I - - - - Hi-z Not used
86 Avss Avss - - - - - - Ground pin for A/D converters(0V).
87 P80 P80 O - - Pu L L Not used
8
DN-X300
Pin
Pin Name Symbol I/O Det Int Pu Ext Res Ini Function
No.
88 P81 P81 O - - Pu L L Not used
89 P82 P82 O - - Pu L L Not used
90 P83 CH1REV O - - Pu L H CH1 FADER REVERSE SW 'L' : ON
91 P84,_CS _CE O - - - L L Chip select signal.
92 Vss Vss - - - - - - GND(0V)
93 PA0 CFREV I - - Pu L H CROSSFADER REVERSE SW 'L' : ON
94 PA1 CH2REV I - - Pu L H CH2 FADER REVERSE SW 'L' : ON
95 PA2 CH2FS I - - Pu L H CH2 FADER START SW 'L' : ON
96 PA3 2CFS I - - Pu L H CROSSFADER START B SW 'L' : ON
97 PA4 C1 O - - - L H PWM output control PGM1 volume
98 PA5 1CFS I - - Pu L H CROSSFADER START A SW 'L' : ON
99 PA6 C2 O - - - L H PWM output control PGM2 volume
100 PA7 PA7 O - - Pu L L Not used
9
DN-X300
LB1482M (IC701)
GND 1 30 8P/5P
O1 2 29 AC/DC
O2 3 28 PH
O3 4 27 MUTE
O4 5 26 CH1 IN
O5 6 25 CR1
O6 7 24 A GND
O7 8 LB1482M 23 DC IN
O8 9 22 CR2
O9 10 21 CH2 IN
O10 11 20 NC
O11 12 19 OSC
O12 13 18 Vcc1
D2 14 17 Vcc2
NC 15 16 D1
13
O12
26 12
AC IN (1) O11
CH1 IN
11
O10
25
CR1 10
O9
9
O8
21 PEAK HOLD
CH2 IN AC IN (2) LOGIC 8
O7
22 7
CR2 O6
6
O5
5
23 O4
DC IN DC IN
4
O3
3
18 O2
Vcc1
(Signal system) 2
Inside O1
24 LOGIC
A GND reference CONTROL
voltage
14
1 D2
GND CONTROL
SWITCHER 16
D1
19 17
OSC OSC Vcc2
(Power system)
27 28 29 30
MUTE P/H AC 8P/5P
DC
TC4053BF (IC507) NJM2060 (IC105, 106, 205, 206, 952)
IY 1 16 VDD A OUTPUT 1 14 D OUTPUT
A D
OY 2 15 Y-COM A -INPUT 2 13 D -INPUT
IZ 3 14 X-COM A +INPUT 3 12 D +INPUT
Z-COM 4 13 IX
V+ 4 11 V-
OZ 5 12 OX
B +INPUT 5 10 C +INPUT
INH 6 11 A
7 10 B -INPUT 6 9 C -INPUT
VEE B B C
Vss 8 9 C B OUTPUT 7 8 C OUTPUT
10
DN-X300
THAT2180 (IC111, 112, 211, 212)
7
1
2k Vcc
BIAS CURRENT 2
COMPENSATION
Ec+
25
Pin Name SIP Pin Ec-
3
Input 1 Vbe
Input MULTI- 8
Ec+ 2 PLIER
1 Output
4
Ec