Denon DN-X400 User manual

Hi-Fi Component
SERVICE MANUAL
MODEL DN-X400
DJ MIXER


Some illustrations using in this service manual are slightly different from the actual set.
For U.S.A., Canada, Europe,
Oceania & Asia model
14-14, AKASAKA 4-CHOME, MINATO-KU, TOKYO 107-8011 JAPAN
Telephone: [phone]
X0126 1134 NC 0109
SAFETY PRECAUTIONS ........................................ 2
SPECIFICATIONS ................................................... 2
DISASSEMBLY .................................................... 3~5
SERVICE MODE SPECIFICATIONS .................. 6~8
SEMICONDUCTORS ........................................ 9~13
PRINTED WIRING BOARD PATTERNS ......... 14~17
NOTE FOR PARTS LIST ....................................... 18
PARTS LIST OF P.W.B. UNIT ......................... 19~28
EXPLODED VIEW ................................................. 29
PARTS LIST OF EXPLODED VIEW ...................... 30
PACKING VIEW ..................................................... 31
PARTS LIST OF PACKING & ACCESSORIES ..... 31
BLOCK DIAGRAM ................................................. 32
LEVEL DIAGRAM .................................................. 33
WIRING DIAGRAM ................................................ 34
SCHEMATIC DIAGRAMS ................................ 35~38
(1/4) GU-3402-1 MAIN UNIT (1/2) ............................ 35
(2/4) GU-3402-1 MAIN UNIT (2/2) ............................ 36
GU-3402-2 POWER UNIT ................................ 36
GU-3402-3 PANEL 2 UNIT ............................... 36
GU-3402-4 LINE SELECTOR UNIT ................. 36
GU-3402-5 CROSS FADOR UNIT ................... 36
GU-3402-6 ZONE/EFFECT UNIT .................... 36
(3/4) GU-3403-1 PANEL 1 UNIT ............................... 37
GU-3403-3 DISPLAY UNIT .............................. 37
GU-3403-5 REGULATOR UNIT ....................... 37
(4/4) GU-3403-2 ANALOG I/O UNIT ......................... 38
GU-3403-4 H/P JACK UNIT ............................. 38
— TABLE OF CONTENTS —

2
DN-X400
SPECIFICATIONS
GENERAL
Dimensions: 482 (W) ×105 (H) ×177 (D) mm (without feet)
Installation: 19-inch rack mountable 4U
Mass: 5.5 kg
Power Supply: 120 V AC ±10 %, 60 Hz (U.S.A. & Canada models)
230 V AC ±10 %, 50 Hz (European models)
Power Consumption: 26 W
Environmental Conditions: Operational temperature: 5 to 35 °C (41 to 95 °F)
Operational humidity: 25 to 85 % (no condensation)
Storage temperature: −20 to 60 °C (4 to 140 °F)
AUDIO SECTION
Input Sensitivity & Impedance:
Main Mic −54 dBV (2.0mV) 10 kΩ/kohms
Aux Mic −60 dBV (1.0mV) 10 kΩ/kohms
Effect (Return) −10 dBV (316mV) 50 kΩ/kohms
2-Phono −50 dBV (3.0mV) 50 kΩ/kohms
8-Line −14 dBV (200mV) 50 kΩ/kohms
Output level & Impedance:
Main (Balanced) 4 dBm (1.23V) 600 Ω/ohms load
Main (Unbalanced) 0 dBV (1.0V) 1 kΩ/kohms
Booth/Zone (Balanced) 4 dBm (1.23V) 600 Ω/ohms load
Rec (RCA) −10 dBV (316mV) 1 kΩ/kohms
Effect (Send) −10 dBV (316mV) 1 kΩ/kohms
Subwoofer −2 dBV (800mV) 1 kΩ/kohms
Headphone −4 dBV (631mV) 150 Ω/ohms (33 Ω/ohms load)
Frequency Response:
Line 20 to 20 kHz ±2 dB
Phono 20 to 20 kHz RIAA ±2 dB
Mic 20 to 20 kHz ±2 dB
Signal to Noise ratio:
Line 80 dB 0 dBm, 1 kHz, EQ flat
Phono 75 dB 0 dBm, 1 kHz, EQ flat
Main Mic 65 dB 0 dBm, 1 kHz, EQ flat
Total harmonic distortion rate:
Line Below 0.05 %
Phono Below 0.05 %
Cross talk: Over 70 dB
Channel equalizer:
Hi +10 dB, −26 dB (13 kHz)
Mid +10 dB, −26 dB (1 kHz)
Low +10 dB, −26 dB (70 Hz)
Microphone equalizer:
Hi +12 dB, −12 dB (10 kHz)
Mid +12 dB, −12 dB (1 kHz)
Low +12 dB, −12 dB (100 Hz)
Digital output (COAXIAL):
Signal format IEC958 Type II
Output level 0.5 Vp-p 75 Ω/ohms
Output signal level −6 dB
Digital output (OPTICAL):
Signal format IEC958 Type II
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.

3
DN-X400
53
Fader Unit
Fader Unit
Connector
53
57
57
57
57
Front Panel Unit
FFC
FFC FFC
Connector
Connector Connector
57
57
DISASSEMBLY
(Follow the procedure below in reverse order when reassembling)
Front Panel Unit
1. Remove 6 screws and pull up Front Panel Unit.
2. Disconnect FFC cable and Connector.
3. Detach Front Panel Unit.
Note: Do not pull out aslant to prevent FFC cable damage.
Do not fail to pull AC cord from wall outlet before
disconnect the FFC cable.
If AC cord is remained plugged into wall outlet,
power is kept supplied in the unit, which may cause
danger.
Feder Unit
1. Remove 2 screws and pull up Feder Unit.
2. Disconnect Connector.
57
53

4
DN-X400
Front Panel
1. Remove 8 screws .
2. Pull out the knobs and pull up Front Panel.
Front Cover Unit
1. Remove 5 screws and pull up Front Cover Unit.
2. Disconnect Connector.
3. Detach Front Cover Unit.
58
35 37
38
37
35
35
35
35 35
35 38
58
58
58
58 58
35
35
Front Panel 37
57
57
Front Cover
Connector
Connector Connector
Connector
57
57
57
57

5
DN-X400
Rear Panel Unit
1. Remove 8 screws and pull up Rear Panel Unit.
52
54
54
54
Rear Panel Unit
54
54
54
54
52
52

6
DN-X400
SERVICE MODE SPECIFICATION
*How the product performs when the operation buttons for µcom control are pressed (including control input) is described in the
table below.
1-1 POWER ON / RESET
No Function Description Display Remarks
1 POWER (1) Turns power ON/OFF.
POWER ON
RESET
(2) Switches power ON when OFF.
1. Enters in the service mode when power
on while pressing MIC POST ON/OFF
button and EFECT LOOP MAIN button.
-20 8
Lch  
VerNo LineSelect
Rch   
FADER ASSIGN A ASSIGN B
CH FADER START
2. For canceling the service mode, turn
power off/on.
1. Displays as defined after lighting
all LED for 1 sec.
2. Displays µcom version by 8-bit
on the level meter Lch LED-20~0
after 1.
3. Displays LINE select status on
the level meter Lch LED1~8 after
1.
4. Displays FADER VR data on the
level meter Rch LED-20-7 after
1.
5. Displays CH FADER START SW
status on the level meter Rch
LED-3 after 1.
6. Displays ASSIGN A status by 3-
bit on the level meter Rch LED-
1~1 after 1. Displays ASSIGN B
status by 3-bit on the level meter
Rch LED3~8 after 1.
7. Other than above, all LED goes
off.
1. LED off, LED on.
2. Refer to LINE SELECT
SW.
3. Refer to CROSS FADER
4. Refer to CH FADER.
5. Refer to ASSIGN A/B.
1-2 CH FADER START Switch
No Function Description Display Remarks
2 (1) Turns the level meter Rch LED-3 on/off
depending on the status of CH FADER
START SW.
1. Lights Rch level meter LED-3
when selected ON.
2. Extinguishes Rch level meter
LED-3 when selected OFF.
1-3 ASSIGN SELECT Switch
No Function Description Display Remarks
3 ASSIGN A (1) Selects the FADER for checking FADER
VR by examining ASSIGN A SW
operation.
1. For FADER data display,
refer to CH1 FADER.
CROSS (2-1) When selected OFF, it becomes the
mode of reading/displaying CROSS
FADER VR value.
1. Indicates OFF select display on the level
meter Rch.
1. Displays  on the level
meter Rch defined LED.
2. Displays CROSS FADER VR
data.
1. indicates level meter
Rch -1, 0, and -1 in
order.
CH1 (2-2) When selected CH1, it becomes the
mode of reading/displaying CH1 FADER
VR value.
1. Indicates CH1 select display on the level
meter Rch.
1. Displays  on the level
meter Rch defined LED.
2. Displays CH1 FADER VR data.
CH2 (2-3) When selected CH2, it becomes the
mode of reading/displaying CH2 FADER
VR value.
1. Indicates CH2 select display on the level
meter Rch.
1. Displays  on the level
meter Rch defined LED.
2. Displays CH2 FADER VR data.
ASSIGN B (3) Checks ASSIGN B SW operation.
CROSS (4-1) When selected OFF, it indicates OFF
select display on the level meter Rch.
1. Displays  on the level
meter Rch defined LED.
1. indicates level meter
Rch 3, 5, and 8 in order.
CH1 (4-2) When selected CH1, it indicates CH1
select display on the level meter Rch.
1. Displays  on the level
meter Rch defined LED.
CH2 (4-3) When selected CH2, it indicates CH2
select display on the level meter Rch.
1. Displays  on the level
meter Rch defined LED.

7
DN-X400
1-4 CROSS FADER
No Function Description Display Remarks
4CLOSS
FADER
(1) When OFF selected at ASSIGN A, it
reads the voltage divided by FADER VR
resister and displays the voltage data on
the level meter Rch defined LED.
1. 0 ⬉FADER voltage ⬉0.5,
it displays .
2. 0.5 ⬍FADER voltage ⬉1.0,
it displays .
3. 1.0 ⬍FADER voltage ⬉1.5,
it displays .
4. 1.5 ⬍FADER voltage ⬉2.0,
it displays .
5. 2.0 ⬍FADER voltage ⬉2.5,
it displays .
6. 2.5 ⬍FADER voltage ⬉3.0,
it displays .
7. 3.0 ⬍FADER voltage ⬉3.5,
it displays .
8. 3.5 ⬍FADER voltage ⬉4.0,
it displays .
9. 4.0 ⬍FADER voltage ⬉4.5,
it displays .
10. 4.5 ⬍FADER voltage ⬉5.0,
it displays .
11. Other than above, it displays
.
1. indicates level meter
Rch -20, -15, -10, and -7
in order.
1-5 CH FADER (CH1/CH2) p
pp
pOnly CH1/CH2 checkable in this mode, CH3/CH4 uncheckable.
No Function Description Display Remarks
5 CH1
FADER
(1) When 1 selected at ASSIGN A, it reads
the voltage divided by CH1 FADER VR
resister and displays the voltage data on
the level meter Rch defined LED.
1. 0 ⬉FADER voltage ⬉0.5,
it displays .
2. 0.5 ⬍FADER voltage ⬉1.0,
it displays .
3. 1.0 ⬍FADER voltage ⬉1.5,
it displays .
4. 1.5 ⬍FADER voltage ⬉2.0,
it displays .
5. 2.0 ⬍FADER voltage ⬉2.5,
it displays .
6. 2.5 ⬍FADER voltage ⬉3.0,
it displays .
7. 3.0 ⬍FADER voltage ⬉3.5,
it displays .
8. 3.5 ⬍FADER voltage ⬉4.0,
it displays .
9. 4.0 ⬍FADER voltage ⬉4.5, it
displays .
10. 4.5 ⬍FADER voltage ⬉5.0, it
displays .
11. Other than above, it displays
.
1. indicates level meter
Rch -20, -15, -10, and -7
in order.
CH2
FADER
(2) When 2 selected at ASSIGN A, it reads
the voltage divided by CH2 FADER VR
resister and displays the voltage data on
the level meter Rch defined LED.
1. Same as CH1.

8
DN-X400
1-6 LINE SELECT Switch (CH1/CH2/CH3/CH4)
No Function Description Display Remarks
6 LINE (1) Performs LINE SELECT SW operation
check.
CH1 (2) Turns the level meter Lch LED1 on/off
depending on the status of CH1 LINE
SELECT SW.
1. Lights LED1 when LINE1
selected.
2. Extinguishes LED1 when LINE2
selected.
CH2 (3) Turns the level meter Lch LED3 on/off
depending on the status of CH2 LINE
SELECT SW.
1. Lights LED3 when LINE3
selected.
2. Extinguishes LED3 when LINE4
selected.
CH3 (4) Turns the level meter Lch LED5 on/off
depending on the status of CH3 LINE
SELECT SW.
1. Lights LED5 when PHONO1/
LINE5 selected.
2. Extinguishes LED5 when LINE6
selected.
CH4 (5) Turns the level meter Lch LED8 on/off
depending on the status of CH4 LINE
SELECT SW.
1. Lights LED8 when PHONO2/
LINE7 selected.
2. Extinguishes LED8 when LINE8
selected.

9
DN-X400
1
16
17 32
33
48
4964
SEMICONDUCTORS


IC’s
TMP86CM41F-3GH8 Terminal Function
TMP86CM41F-3GH8 (Main unit : IC314)
FunctionI/O DET Ext Ini Res
No. Name
1VSS VSS —————GND
2XIN XIN — — — — — Osc. input pin, 16.00MHz
3XOUT XOUT — — — — — Osc. output pin
4 TEST(H:Vup) TEST — — — — — Fixed to GND
5VDD VDD — — — — — Power (+5.0V)
6 P21 STOP1 O — Pu H H Fader start CD1 back cue output
7 P22 PLAY1 O — Pu H H Fader start CD1 play start output
8 RESET_ RESET_ — — — — — Reset input
9 P20 ASWST0 O — Pu L H Analog SW data strobe signal 0
10 P30 YBLKCK O — — H — DIT sub code block clock
11 P31 ASWST2 O — Pd L L Analog SW data strobe signal 2
12 P32 ASWST3 O — Pd L L Analog SW data strobe signal 3
13 P33(SCK_) ASWCLK O — — L — Clock for analog SW data transfer
14 P34 LVM1 O — Pu H H Stereo level (ProgLch&Rch), L: Sel
15 P35(SO) ASWDAT O — — L — Analog SW data
16 P36 LVM2 O — Pu H H MONO LEVEL(CueAllMix&ProgAllMix), L: Sel
17 P37 ASWST1 O — Pd L L Analog SW data strobe signal 1
18 P40 — O — — L — Not used
19 (RxD1) — O — — L — Not used
20 (TxD1) — O — — L — Not used
21 P43 MUTE O — Pu H H Output mute, H: Mute
22 P44 PLAY2 O — Pu H H Fader start CD2 play start output
23 P45 STOP2 O — Pu H H Fader start CD2 back cue output
24 P46(INT3) TGSW3 I Ed Pu — — SW input interrupt signal for CH3 line select (PANEL1-B)
25 P47(INT4) TGSW4 I Ed Pu — — SW input interrupt signal for CH4 line select (PANEL1-B)
26 (AIN00) KEYIN10 I — Pu — H Key input 10 (PANEL1-B)
27 (AIN01) KEYIN12 I — Pu — H Key input 12 (PANEL1-B)
28 (AIN02) KEYIN13 I — Pu — H Key input 13 (ASSIGN-A) (PANEL1-B)
29 (AIN03) KEYIN11 I — Pu — H Key input 11 (PANEL1-F)
30 (AIN04) KEYIN14 I — Pu — H Key input 14 (ASSIGN-B) (PANEL1-F)
31 (AIN05) KEYIN20 I — Pu — H Key input 20 (PANEL2)
32 (AIN06) LVM-L I — — — — Signal input for level meter Lch
33 (AIN07) LVM-R I — — — — Signal input for level meter Rch
34 (AIN10) CRS-F I — — — — Cross fader voltage input signal
35 (AIN11) CH1-F I — — — — CH1 fader voltage input signal
36 (AIN12) CH2-F I — — — — CH2 fader voltage input signal
37 (AIN13) CONTOUR I — — — — Contour voltage input signal
38 (AIN14) — I — — — L Fixed to GND
Symbol

10
DN-X400
39 (AIN15) — I — — — L Fixed to GND
40 (AIN16) — I — — — L Fixed to GND
41 (AIN17) PLGIN I — Pu — — Plug connect signal +5V: IN
42 VAREF VAREF — — — — — Analog ref. V (+5V) for AD conversion
43 AVDD AVDD — — — — — Power (+5V)
44 AVSS AVSS — — — — — Analog ref. GND (GND) for AD conversion
45 P00 CHSELB1 O — Pu H H ASSIGN-B CH select signal 1
46 P01 CHSELB2 O — Pu H H ASSIGN-B CH select signal 2
47 P02 CHSELA1 O — Pu H H ASSIGN-A CH select signal 1
48 P03 CHSELA2 O — Pu H H ASSIGN-A CH select signal 2
49 P10 LDDAT1 O — Pd L L LED driver data 1 (PANEL1-F)
50 P11(INT1) TGSW1 I Ed Pu — — SW input interrupt signal for CH1 line select (PANEL1-B)
51 P12(INT2) TGSW2 I Ed Pu — — SW input interrupt signal for CH2 line select (PANEL1-B)
52 P13 LDDAT2 O — — L — LED driver data 2 (PANEL1-F)
53 P14 LDSEL1 O — Pu H H LED line control signal 1,L: On (PANEL1-F)
54 P15 LDSEL2 O — Pu H H LED line control signal 2,L: On (PANEL1-F)
55 P16 LDCLK1 O — — L — Clock for LED driver data transfer (PANEL1-F/2)
56 P17 LDDAT3 O — — L — LED driver data 3 (PANEL2)
57 P50 — O — — L — Not used
58 P51 NRESET O — Pd L L DIT reset signal, L: Reset
59 P52 ZSENCE I — — — — DIT ucon interface status
60 P53 YDMUTE O — Pu H H DIT mute signal, H: Mute
61 P54 YMLD O — Pu H H DIT chip enable signal
62 P55 YMDATA O — — L — DIT data send data
63 P56 YMCLK O — — H — Clock for DIT data send
64 P57 — O — — L — Not used
FunctionI/O DET Ext Ini Res
No. Name Symbol