PIONEER DJ DJM-750MK2 User manual

ORDER NO.
Pioneer DJ Corporation 6F, Yokohama i-Mark Place, 4-4-5 Minatomirai, Nishi-ku, Yokohama, Kanagawa 220-0012 Japan
2017 Pioneer DJ Corporation
DJM-750MK2
QRT1011
DJ MIXER
DJM-750MK2
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
THIS SERVICE MANUAL SHOULD BE USED TOGETHER WITH THE FOLLOWING MANUAL(S).
Model Type Power Requirement Remarks
DJM-750MK2 LSYXJ AC 110 V to 240 V
DJM-750MK2 UXJCB AC 110 V to 240 V
DJM-750MK2 XJCN AC 220 V
Model Order No. Remarks
DJM-750MK2 QRT1012 SCHEMATIC DIAGRAM, PCB CONNECTION DIAGRAM, PCB PARTS LIST

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SAFETY INFORMATION
This service manual is intended for qualified service technicians; it is not meant for the casual do-it-
yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained
to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely, you
should not risk trying to do so and refer the repair to a qualified service technician.
CAUTION
Since the fuse may be in the neutral of the mains supply, disconnect the mains to de-energize the phase conductors.

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CONTENTS
SAFETY INFORMATION.......................................................................................................................................................... 2
1. SERVICE PRECAUTIONS .................................................................................................................................................... 4
1.1 NOTES ON SOLDERING ............................................................................................................................................... 4
1.2 NOTES ON REPLACING ............................................................................................................................................... 4
1.3 SERVICE NOTICE.......................................................................................................................................................... 4
2. SPECIFICATIONS................................................................................................................................................................. 6
2.1 ACCESORIES ................................................................................................................................................................ 6
2.2 SPECIFICATIONS .......................................................................................................................................................... 6
3. BASIC ITEMS FOR SERVICE .............................................................................................................................................. 7
3.1 CHECK POINTS AFTER SERVICING ........................................................................................................................... 7
3.2 JIGS LIST ....................................................................................................................................................................... 7
3.3 PCB LOCATIONS ......................................................................................................................................................... 10
4. BLOCK DIAGRAM .............................................................................................................................................................. 11
4.1 OVERALL WIRING DIAGRAM ..................................................................................................................................... 11
4.2 BLOCK DIAGRAM ........................................................................................................................................................ 12
4.3 POWER BLOCK DIAGRAM ......................................................................................................................................... 13
5. DIAGNOSIS ........................................................................................................................................................................ 14
5.1 STARTUP SEQUENCE ................................................................................................................................................ 14
5.2 TROUBLESHOOTING.................................................................................................................................................. 16
[0] Prior confirmation.................................................................................................................................................. 17
[1] Start Trouble ......................................................................................................................................................... 17
[2] Abnormality display............................................................................................................................................... 18
[3] AUDIO INPUT....................................................................................................................................................... 19
[4] AUDIO OUTPUT................................................................................................................................................... 20
[5] DVS....................................................................................................................................................................... 21
[6] OLED .................................................................................................................................................................... 22
[7] CROSS FADER .................................................................................................................................................... 22
[8] USBA .................................................................................................................................................................... 23
5.3 POWER SUPPLY DIAGNOSIS INFORMATION........................................................................................................... 24
5.4 CONFIRMATION OF EACH INTERFACE CONNECTION ........................................................................................... 25
6. SERVICE MODE ................................................................................................................................................................. 26
6.1 TEST MODE................................................................................................................................................................. 26
6.2 ABOUT THE DEVICE................................................................................................................................................... 38
7. DISASSEMBLY ................................................................................................................................................................... 39
8. EACH SETTING AND ADJUSTMENT ................................................................................................................................ 52
8.1 NECESSARY ITEMS TO BE NOTED........................................................................................................................... 52
8.2 UPDATING OF THE FIRMWARE ................................................................................................................................. 53
8.3 METHOD OF WRITING SERIAL NUMBER ................................................................................................................. 54
8.4 METHOD OF DVS CONNECTION CONFIRMATION................................................................................................... 55
8.5 ITEMS FOR WHICH USER SETTING ARE AVAILABLE ............................................................................................. 57
9. EXPLODED VIEWS AND PARTS LIST............................................................................................................................... 58
9.1 PACKING SECTION ..................................................................................................................................................... 58
9.2 EXTERIOR SECTION .................................................................................................................................................. 60
9.3 CHASSIS SECTION ..................................................................................................................................................... 62
9.4 CONTROL PANEL SECTION....................................................................................................................................... 64

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CONTENTS
SAFETY INFORMATION.......................................................................................................................................................... 2
10. SCHEMATIC DIAGRAM...................................................................................................................................................... 4
10.1 OVERALL WIRING DIAGRAM ..................................................................................................................................... 4
10.2 MAIN ASSY (1/11)........................................................................................................................................................ 5
10.3 MAIN ASSY (2/11)........................................................................................................................................................ 6
10.4 MAIN ASSY (3/11)........................................................................................................................................................ 7
10.5 MAIN ASSY (4/11)........................................................................................................................................................ 8
10.6 MAIN ASSY (5/11)........................................................................................................................................................ 9
10.7 MAIN ASSY (6/11)...................................................................................................................................................... 10
10.8 MAIN ASSY (7/11)...................................................................................................................................................... 11
10.9 MAIN ASSY (8/11)...................................................................................................................................................... 12
10.10 MAIN ASSY (9/11).................................................................................................................................................... 13
10.11 MAIN ASSY (10/11).................................................................................................................................................. 14
10.12 MAIN ASSY (11/11).................................................................................................................................................. 15
10.13 PNLA ASSY (1/3) ..................................................................................................................................................... 16
10.14 PNLA ASSY (2/3) ..................................................................................................................................................... 17
10.15 PNLA ASSY (3/3) ..................................................................................................................................................... 18
10.16 AINB ASSY (1/7) ...................................................................................................................................................... 19
10.17 AINB ASSY (2/7) ...................................................................................................................................................... 20
10.18 AINB ASSY (3/7) ...................................................................................................................................................... 21
10.19 AINB ASSY (4/7) ...................................................................................................................................................... 22
10.20 AINB ASSY (5/7) ...................................................................................................................................................... 23
10.21 AINB ASSY (6/7) ...................................................................................................................................................... 24
10.22 AINB ASSY (7/7) ...................................................................................................................................................... 25
10.23 USBA ASSY, MICB ASSY and MTRM ASSY ........................................................................................................... 26
10.24 HPJK ASSY and HPJM ASSY.................................................................................................................................. 27
10.25 OLED ASSY and CHFD ASSY................................................................................................................................. 28
10.26 BFXB ASSY, PWSB ASSY and HPVR ASSY........................................................................................................... 29
10.27 SW POWER SUPPLY and CRFD ASSY .................................................................................................................. 30
10.28 VOLTAGES / WAVEFORMS ..................................................................................................................................... 31
11. PCB CONNECTION DIAGRAM ........................................................................................................................................ 37
11.1 MAIN ASSY ................................................................................................................................................................ 37
11.2 PNLA ASSY................................................................................................................................................................ 39
11.3 AINB ASSY................................................................................................................................................................. 41
11.4 USBA, MICB, HPJK, HPJM, OLED and MTRM ASSYS............................................................................................. 43
11.5 CHFD, BFXB, PWSB, HPVR and CRFD ASSYS ....................................................................................................... 45
11.6 SW POWER SUPPLY................................................................................................................................................. 47
12. PCB PARTS LIST.............................................................................................................................................................. 48

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1. SERVICE PRECAUTIONS
1.1 NOTES ON SOLDERING
1.2 NOTES ON REPLACING
1.3 SERVICE NOTICE
• For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.
Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs
accompanied by reworking of soldering.
Do NOT use a soldering iron whose tip temperature cannot be controlled.
The part listed below is difficult to replace as a discrete component part.
It the failure of suspected that are listed in the table, replace whole ASSY.
ASSY Name Ref. No Parts No. Function Remarks
MAIN ASSY
IC1204 BD9328EFJ 12V =>1.25V DC/DC Converter IC with heat-pad
IC1205 TPS2557DRB Current Limit IC IC with heat-pad
IC1208NJM78M09DL1A 12V =>9V Regulator IC with heat-pad
IC1402 NJW4154GM1-A 12V =>-18V DC/DC Converter IC with heat-pad
IC1403BD9851EFV 12V =>±7.5V DC/DC Converter IC with heat-pad
IC1404 NJM78M15DL1A 18V =>15V Regulator IC with heat-pad
IC1405 NJM79M15DL1A -18V =>-15V Regulator IC with heat-pad
IC1406 NJM78M15DL1A 18V =>15V Regulator IC with heat-pad
IC1407 NJM79M15DL1A -18V =>-15V Regulator IC with heat-pad
IC1408NJM78M09DL1A 12V =>9V Regulator IC with heat-pad
IC1409 NJM78M15DL1A 18V =>15V Regulator IC with heat-pad
IC1410 UA78M05IKVURG39V =>5V Regulator IC with heat-pad
IC1411 UA78M33IKVUG39V =>3.3V Regulator IC with heat-pad
IC1412 UA78M05IKVURG39V =>5V Regulator IC with heat-pad
IC3001 D810K013DZKB400 DSPBGA
IC4001 AK4458VN DAC IC with heat-pad
Q46132SCR573DG Transistor Transistor with heat-pad
Q4614 2SAR573DG Transistor Transistor with heat-pad
Q4615 2SCR573DG Transistor Transistor with heat-pad
Q4616 2SAR573DG Transistor Transistor with heat-pad
AUDIO ASSY IC6001 AK5558VN ADC IC with heat-pad
This product is continuously monitoring abnormal voltages.
If abnormality is detected, power supply is immediately turned OFF.
Power supply abnormality is indicated by blinking the UTILITY(WAKE UP) LED
[cycle : 250 ms (lighting 125 ms/ light-off 125 ms)] .
UTILITY(WAKE UP) LED display other than the LED is lighting-off all, it will all be SW and VR free reaction.
Repair according to the diagnosis method of “5.3POWER SUPPLY DIAGNOSISINFORMATION.”
About voltage monitoring
This product includes user setting items. Check the settings before repairing.
Use the check sheet prepared in item 8.5 to transcribe the settings.
Setting contents are stored in the Flash ROM (IC2003) in the MAIN ASSY.
For confirming or changing setting contents, refer to “Changing the settings” of the Operationg Instructions.
Checking user setting contents
The contactless fader is mounted in the cross fader part of this product.
This has several times of durability comparing with conventional types.
As assembly of the fader part is required high precision, service parts are provided only as an assembly
(Part name is CROSS FADER ASSY (DXA2257)).
After replacing the part, make sure to acquire and save the maximum and minimum A/D values of [Cross fader setting
mode (CFDR SET)] in the test mode.
If this calibration is not conducted, normal start is not possible.
If MAIN ASSY is replaced, make sure to acquire and save the maximum and minimum A/D values of [Cross fader setting
mode (CFDR SET)] after the replacement.
About the replacing CROSS FADER ASSY
Display part of this product employs OLED. Exchange at the time of OLED failure, replace using OLED ASSY (DEA1065).
Matrix OEL is stick to Holder using double side tape. If trying to peel in the case of failing to paste,
fault will be caused due to the stress.
Service part supplies as ASSY who stuck Matrix OEL and Holder.
About the replacing OLED ASSY
C4638 and C4639 in the MAIN ASSY are locked with bond to prevent solder cracks caused by fall or vibration.
When any of them is replaced for repair, it must be locked with bond after the replacement.
Silicon Bond: GYA 1011
About the replacing Capacitor (C4638, C4639)

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Checking
LEDs
No polarity
C4 C5
Primary side of SW POWER SUPPLY remains voltage long time and the primary solder side can be seen.
So if you touch the primary solder side, it is possible to receive an electrical shock.
There is the red area below where you tend to receive an electrical shock.
Be sure to discharge the voltage of primary side to avoid receiving the electrical shock.
When discharging the above point, use the following discarge jig as needed.
While the charging voltage is left of both C4 and C5, either of checking LEDs turns on.
And if both of LED turns off, you can avoid receiving the electrical shock!!
DWR1548 (SW POWER SUPPLY) Primary side electrical shock
When replacing the Control Panel, replace using Control Panel (Service ASSY) : DEA1077
Control Panel supplies as Service ASSY who stuck Packing and double side tape for Lens because precision is
necessary of sticking of them.
About the replacing Control Panel
Electrical shock area of A-side.
Electrical shock area of B-side.
Circuit of "discharge JIG" is shown below.
• Resister is all 10kΩ(3W)
• Both of LED is LTL17KRH5D
When there is no above type LED, take measures the
following method.
• Step1: After the power is turned off,wait 2 minutes.
• Step2: Connect the Register Jig and leave the unit
as it is, for 10 seconds.

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2. SPECIFICATIONS
2.1 ACCESORIES
2.2 SPECIFICATIONS
•Power cord (LSYXJ : ADG1244)
(UXJCB : DDG1108)
(XJCN : DDG1114)
•USB cable (DDE1128)
(XJCN : DRH1436)
• Operating instructions
(Quick start guide)
(LSYXJ : DRH1433)
(LSYXJ : DRY1270)
(UXJCB : DRH1434)
• License key card
(rekordbox dj, recordbox dvs)
• Warranty card*
*
The corresponding information is provided on the last page (UXJCB model).
Cautions
The license key cannot be reissured. Be careful not to losted it.
General – Main Unit
Power requirements............................. AC 110 V to 240 V, 50 Hz/60 Hz
Power consumption........................................................................ 40 W
Power consumption (standby)........................................................ 0.3W
Main unit weight ............................................................... 6.6 kg (14.6 lb)
Max. dimensions............... 320 mm (W) × 107.9 mm (H) × 387.9 mm (D)
(12.6 in. (W) × 4.2 in. (H) × 15.3in. (D))
Tolerable operating temperature........ +5 °C to +35 °C (+41 °F to +95 °F)
Tolerable operating humidity.................... 5 % to 85% (no condensation)
Audio Section
Sampling rate............................................................................... 48kHz
D/A converter................................................................................. 32-bit
Channel input A/D converter .......................................................... 32-bit
Other A/D converter ....................................................................... 24-bit
Frequency characteristic
LINE ......................................................................... 20 Hz to 20 kHz
S/N ratio (rated output)
PHONO.................................................................................... 87 dB
LINE .......................................................................................105 dB
MIC .......................................................................................... 79 dB
Total harmonic distortion (LINE— MASTER1)............................ 0.005 %
Standard input level / Input impedance
PHONO...................................................................... –52 dBu/47 kΩ
LINE.......................................................................... –12 dBu/47 kΩ
MIC .............................................................................. –57dBu/3kΩ
RETURN.................................................................... –12 dBu/47 kΩ
Standard output level / Load impedance / Output impedance
MASTER1........................................................ + 6 dBu/10 kΩ/300 Ω
MASTER2........................................................ + 2 dBu/10 kΩ/680 Ω
BOOTH............................................................ + 6 dBu/10 kΩ/300 Ω
SEND(when RETURN TYPE is "AUX").............. –6 dBu/10 kΩ/680 Ω
SEND(when RETURN TYPE is "INSERT")....... –12dBu/10 kΩ/680 Ω
PHONES.................................................. + 8dBu/32 Ω/10 Ωor less
Rated output level / Load impedance
MASTER1................................................................. +25 dBu/10 kΩ
MASTER2................................................................. +21 dBu/10 kΩ
Crosstalk (LINE)............................................................................ 82 dB
Channel equalizer characteristic
HI ............................................................... –26 dB to +6 dB (20 kHz)
MID .............................................................. –26 dB to +6 dB (1 kHz)
LOW ............................................................ –26 dB to +6 dB (20 Hz)
Microphone equalizer characteristic
HI ............................................................. –12 dB to +12 dB (10 kHz)
LOW ........................................................ –12 dB to +12 dB (100 Hz)
Input / Output terminals
PHONO input terminal
RCA pin jacks...........................................................................4 sets
LINE input terminal
RCA pin jacks...........................................................................4 sets
MIC input terminal (XLR/TRS)
XLR connector & 1/4” TRSjack..................................................1 set
RETURN Input terminals (TS)
1/4” TSjack................................................................................1 set
MASTER output terminal
XLR connector........................................................................... 1 set
RCA pin jacks ............................................................................ 1 set
BOOTH output terminal
1/4” TRSjack .............................................................................1 set
SEND output terminal (TS)
1/4” TSjack................................................................................1 set
PHONESoutput terminal
1/4” stereo phone jack ............................................................... 1 set
3.5mm stereo mini jack ............................................................ 1 set
USB terminal
Type A....................................................................................... 1 set
Power supply...5 V/2.1 A or less
B type ........................................................................................ 1 set
The specifications and design of this product are subject to change
without notice.
•

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3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
3.2 JIGS LIST
1 Check the firmware version in Test mode. The version of the firmware must be latest.
Update firmware to the latest one, if it is not the latest.
2Confirm whether the customer complain has
been solved. If the problem pointed out by the
customer occurs with a specific source or
operation, input that specific source then perform
that specific operation for checking.
The customer complain must not be reappeared.
Audio and operations must be normal.
3Check the analog audio input (each channel, MIC,
RETURN).
( CDJ player, analog player and MIC to analog
connection )
Audio and operations must be normal.
4 Check the analog audio output (MASTER 1/2,
BOOTH, SEND)( CDJ player to analog connection)
Audio and operations must be normal.
6 Check the each operation (KEY, SW, VR, fader,
etc.) and indicator.
That it works properly in Test mode check.
8Check the DVS.PC application is operating normally, audio and operations must be normal of
each channel.
9 Check the user settings. It is in the contents before repairs.
7 Check the connection of each interface
USB A terminal
USB B terminal
5Check the headphone output (1/4” jack, mini jack). Noise and audio must be normal.
10 Check the appearance of the product. No scratches or dirt on its appearance after receiving it for service.
To keep the product quality after servicing, confirm recommended check points shown below.
Distortion
Noise
Volume too low
Volume too high
Volume fluctuating
Sound interrupted
See the table below for the items to be checked regarding audio.
Item to be checked regarding audio
No. Procedure Check points
Check the lighting of USB connection indicator by inserting a USB memory.
It is properly recognized in PC.
Jigs List
Jig Name Part No. Purpose of use / Remarks
USB cable GGP1193For PC connection, Accessories
Serial number writing software GGS1198Used in the writing of serial number to be performed
after the MAIN ASSY replacement.
Refer to “ 8.3METHOD OF WRITING SERIAL
NUMBER ”.
License-key card for Service GGP1522
GGP1523
For activation of rekordbox dj
For activation of rekordbox DVS
Lubricants List
Name Lubricants No. Remarks
Sillcon Bond GYA1011 Used to do bond locking of C4638 and C4639 in the
MAIN ASSY.

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SEVICE CHECK SHEET
TEST MODE
MODE CHECK
CONTENTS OPERATIION POINT MODDE TITLE INDICATION POINT STATE CHECK
Version Version OLED SYSTEM Ver.
SH-B Ver.
SH-A Ver.
BOOT Ver.
PANEL Ver.
PANEL-B Ver.
DSP P Ver.
DSP D Ver.
LED all light-OFF ALL CLEAR OLED About 1 second indication (at the start of mode)
LED all light-ON ALL SET All LED, OLED "ALL SET" indication for about 1 second
(all LEDs light-ON, OLED mode is started)
KEY operation KEY TESTOLED
DUB ECHO LED / OLED Light-ON when KEY is pressed / "CFX 1" indication
SWEEP LED / OLED Light-ON when KEY is pressed / "CFX 2" indication
NOISE LED / OLED Light-ON when KEY is pressed / "CFX 3" indication
FILTER LED / OLED Light-ON when KEY is pressed / "CFX 4" indication
CUE CH1 LED / OLED Light-ON when KEY is pressed / "CUE 1" indication
CUE CH2 LED / OLED Light-ON when KEY is pressed / "CUE 2" indication
CUE CH3LED / OLED Light-ON when KEY is pressed / "CUE 3" indication
CUE CH4 LED / OLED Light-ON when KEY is pressed / "CUE 4" indication
CUE MASTER LED / OLED Light-ON when KEY is pressed / "CUE MST" indication
SEND/RETURN ON/OFF LED / OLED Light-ON when KEY is pressed / "S/R ON" indication
BEAT DOWN ( ) No LED / OLED — / "BEAT <" indication
BEAT UP ( ) No LED / OLED — / "BEAT >" indication
TAP No LED / No OLED Because it is used for mode transition
AUTO/TAP No LED / OLED — / "AUTO" indication
UTILITY LED / OLED Light-ON when KEY is pressed / "UTILITY" indication
FX FREQUENCY LOW LED / OLED Light-ON when KEY is pressed / "FREQ L" indication
FX FREQUENCY MID LED / OLED Light-ON when KEY is pressed / "FREQ M" indication
FX FREQUENCY HI LED / OLED Light-ON when KEY is pressed / "FREQ H" indication
EFFECT ON/OFF LED / OLED Light-ON when KEY is pressed / "EFX ON" indication
SW operation SW TESTOLED
INPUT SELECT CH1 USB CH1 Level Meter LED [12dB] light-ON
LINE [9dB] light-ON
PHONO [6dB] light-ON
RETURN AUX [3dB] light-ON
INPUT SELECT CH2 USB CH2 Level Meter LED [12dB] light-ON
LINE [9dB] light-ON
PHONO [6dB] light-ON
RETURN AUX [3dB] light-ON
INPUT SELECT CH3USBCH3Level Meter LED [12dB] light-ON
LINE [9dB] light-ON
PHONO [6dB] light-ON
RETURN AUX [3dB] light-ON
INPUT SELECT CH4 USB CH4 Level Meter LED [12dB] light-ON
LINE [9dB] light-ON
PHONO [6dB] light-ON
RETURN AUX [3dB] light-ON
CH FADER Assign CH1 Assign A CH1 Level Meter LED [–24dB] light-ON
THRU [–18dB] light-ON
Assign B [–12dB] light-ON
CH FADER Assign CH2 Assign A CH2 Level Meter LED [–24dB] light-ON
THRU [–18dB] light-ON
Assign B [–12dB] light-ON
CH FADER Assign CH3Assign A CH3Level Meter LED [–24dB] light-ON
THRU [–18dB] light-ON
Assign B [–12dB] light-ON
CH FADER Assign CH4 Assign A CH4 Level Meter LED [–24dB] light-ON
THRU [–18dB] light-ON
Assign B [–12dB] light-ON
MIC OFF CH1 Level Meter LED [0dB] light-ON
ON [–3dB] light-ON
TALK OVER [–6 dB ] light- ON
HEAD PHONESMONO SPLIT CH2 Level Meter LED [–6dB] light-ON
STEREO [–9dB] light-ON
SND/RTN RETURN IN 1/4"TSJACK Master Level Meter Lch LED [15dB] light-ON
USB Master Level Meter [CLIP] light-ON
SND/RTN TYPE AUX Master Level Meter Lch LED [12dB] light-ON
INSERT [9dB] light-ON
EQ CURVE ISOLATOR CH2 Level Meter LED [0dB] light-ON
EQ [–3dB] light-ON
CH FADER CURVE Left CH3Level Meter LED [0dB] light-ON
MID [–3dB] light-ON
Right [–6dB] light-ON
CROSS FADER CURVE Left CH4 Level Meter LED [0dB] light-ON
MID [–3dB] light-ON
Right [–6dB] light-ON
Channel Select SW CF.B Master Level Meter Lch LED [–24dB] light-ON
CF.A [–15dB] light-ON
MIC [–9dB] light-ON
1[–6dB]light-ON
2[–3dB] light-ON
3[0dB] light-ON
4[3dB] light-ON
MASTER [6dB] light-ON
Effect Select SW DELAY Master Level Meter Lch LED [–24dB] light-ON
ECHO [–15dB] light-ON
PING PONG [–9dB] light-ON
SPIRAL [–6dB] light-ON
REVERB [–3dB] light-ON
TRANS[0dB] light-ON
FLANGER [3dB] light-ON
PITCH [6dB] light-ON
ROLL [9dB] light-ON
VINYL BRAKE [12dB] light-ON
HELIX [15dB] light-ON

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TEST MODE
MODE CHECK
CONTENTS OPERATIION POINT MODDE TITLE INDICATION POINT STATE CHECK
Volume operation VOL TESTOLED
Group 1
CH1 TRIM CH1 Level Meter LED "– " : Lights OFF — "+9" : Full Illuminate
CH2 TRIM CH2 Level Meter LED "– " : Lights OFF — "+9" : Full Illuminate
CH3TRIM CH3Level Meter LED "– " : Lights OFF — "+9" : Full Illuminate
CH4 TRIM CH4 Level Meter LED "– " : Lights OFF — "+9" : Full Illuminate
MIC HI Master Level Meter Lch LED "–12 " : Lights OFF — "+12" : Full Illuminate
MIC LOW Master Level Meter Rch LED "–12 " : Lights OFF — "+12" : Full Illuminate
Group 2
CH1 HI CH1 Level Meter LED "–26/– " : Lights OFF — "+6" : Full Illuminate
CH2 HI CH2 Level Meter LED "–26/– " : Lights OFF — "+6" : Full Illuminate
CH3HI CH3Level Meter LED "–26/– " : Lights OFF — "+6" : Full Illuminate
CH4 HI CH4 Level Meter LED "–26/– " : Lights OFF — "+6" : Full Illuminate
CFX PARAMETER Master Level Meter Lch LED "MIN" : Lights OFF — "MAX" : Full Illuminate
HEAD PHONESMIXING Master Level Meter Rch LED "CUE" : Lights OFF — "MASTER" : Full Illuminate
Group 3
CH1 MID CH1 Level Meter LED "–26/– " : Lights OFF — "+6" : Full Illuminate
CH2 MID CH2 Level Meter LED "–26/– " : Lights OFF — "+6" : Full Illuminate
CH3MID CH3Level Meter LED "–26/– " : Lights OFF — "+6" : Full Illuminate
CH4 MID CH4 Level Meter LED "–26/– " : Lights OFF — "+6" : Full Illuminate
HEAD PHONESLEVEL Master Level Meter Lch LED "– " : Lights OFF — "0" : Full Illuminate
EFFECT LEVEL/DEPTH Master Level Meter Rch LED "MIN" : Lights OFF — "MAX" : Full Illuminate
Group 4
CH1 LOW CH1 Level Meter LED "–26/– " : Lights OFF — "+6" : Full Illuminate
CH2 LOW CH2 Level Meter LED "–26/– " : Lights OFF — "+6" : Full Illuminate
CH3LOW CH3Level Meter LED "–26/– " : Lights OFF — "+6" : Full Illuminate
CH4 LOW CH4 Level Meter LED "–26/– " : Lights OFF — "+6" : Full Illuminate
MASTER LEVEL Master Level Meter Lch LED "– " : Lights OFF — "0" : Full Illuminate
BOOTH MONITOR Master Level Meter Rch LED "– " : Lights OFF — "0" : Full Illuminate
Group 5
CH1 COLOR CH1 Level Meter LED "LOW" : Lights OFF — "HI" : Full Illuminate
CH2 COLOR CH2 Level Meter LED "LOW" : Lights OFF — "HI" : Full Illuminate
CH3COLOR CH3Level Meter LED "LOW" : Lights OFF — "HI" : Full Illuminate
CH4 COLOR CH4 Level Meter LED "LOW" : Lights OFF — "HI" : Full Illuminate
SND/RTN LEVEL Master Level Meter Lch LED "MIN" : Lights OFF — "MAX" : Full Illuminate
Fader operation FDR TESTOLED
CH1 FADER CH1 Level Meter LED "0" : Lights OFF — "10" : Full Illuminate
CH2 FADER CH2 Level Meter LED "0" : Lights OFF — "10" : Full Illuminate
CH3FADER CH3Level Meter LED "0" : Lights OFF — "10" : Full Illuminate
CH4 FADER CH4 Level Meter LED "0" : Lights OFF — "10" : Full Illuminate
CROSS FADER Master Level Meter Lch LED "A" : Lights OFF — "B" : Full Illuminate
Level Meter
indication
LED TESTOLED
CH1 CUE CH1 Level Meter Press CUE light-ON one by one from the bottom (pressed 11 times)
CH2 CUE CH2 Level Meter Press CUE light-ON one by one from the bottom (pressed 11 times)
CH3CUE CH3Level Meter Press CUE light-ON one by one from the bottom (pressed 11 times)
CH4 CUE CH4 Level Meter Press CUE light-ON one by one from the bottom (pressed 11 times)
MASTER CUE Master Level Meter Lch LED Press CUE light-ON one by one from the bottom (pressed 11 times)
FREQUENCY LOW Master Level Meter Rch LED + CLIP LED Press CUE light-ON one by one from the bottom (pressed 12 times)
Device check DEVICE OLED
DSP SDRAM SDRAM OLED CHK
OK
NG
UPDATE PORT UPDPORT OLED CHK
OK
NG
UPDATE PORT NG CH1 Level Meter PNL_MODE : [–24dB] light-ON
A-PNL_MOSI : [–18dB] light-ON
A-PNL_MISO : [–12dB] light-ON
A-PNL_CLK : [–9dB] light-ON
A-PNL_CTRL : [–6dB] light-ON
A-PNL_INT : [–3dB] light-ON