
DDJ-T1
For details, refer to "Important Check Points for good servicing".
DJ CONTROLLER
DDJ-T1
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model Type Power Requirement Remarks
DDJ-T1 SVYXJ8 AC 100 V to 240 V
DDJ-T1 UXJCB AC 100 V to 240 V
DDJ-T1 FLPXJ AC 100 V to 240 V
DDJ-T1 KXJ5 AC 100 V to 240 V
DDJ-T1 AXJ5 AC 100 V to 240 V
ORDER NO.
RRV4164
PIONEER CORPORATION 1-1, Shin-ogura, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0031, Japan
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION
K-IZV FEB.
2011 Printed in Japan

1
WARNING
This product may contain a chemical known to the State of California to cause cancer, or birth defects or other reproductive
harm.
Health & Safety Code Section 25249.6 - Proposition 65
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.
1. SAFETY PRECAUTIONS
The following check should be performed for the
continued protection of the customer and service
technician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground
(water pipe, conduit, etc.) by connecting a leakage
current tester such as Simpson Model 229-2 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft, etc.). Plug
the AC line cord of the appliance directly into a 120 V
AC 60 Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5 mA.
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE APPLIANCE TO THE CUSTOMER.
2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appliance
have special safety related characteristics. These are
often not evident from visual inspection nor the protection
afforded by them necessarily can be obtained by using
replacement components rated for voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this Service Manual.
Electrical components having such features are
identified by marking with a > on the schematics and on
the parts list in this Service Manual.
The use of a substitute replacement component which
does not have the same safety characteristics as the
PIONEER recommended replacement one, shown in the
parts list in this Service Manual, may create shock, fire,
or other hazards.
Product Safety is continuously under review and new
instructions are issued from time to time. For the latest
information, always consult the current PIONEER Service
Manual. A subscription to, or additional copies of,
PIONEER Service Manual may be obtained at a nominal
charge from PIONEER.
Leakage
current
tester
Reading should
not be above
0.5 mA
Device
under
test
Test all
exposed metal
surfaces
Also test with
plug reversed
(Using AC adapter
plug as required)
Earth
ground
AC Leakage Test
(FOR USA MODEL ONLY)
2 3 4
SAFETY INFORMATION
A
B
C
D
E
F
2
1
2 3 4
DDJ-T1

5
[Important Check Points for Good Servicing]
In this manual, procedures that must be performed during repairs are marked with the below symbol.
Please be sure to confirm and follow these procedures.
1. Product safety
Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by
following the safety instructions described in this manual.
1 Use specified parts for repair.
Use genuine parts. Be sure to use important parts for safety.
2 Do not perform modifications without proper instructions.
Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as
radio/TV interference and foreign noise.
3 Make sure the soldering of repaired locations is properly performed.
When you solder while repairing, please be sure that there are no cold solder and other debris.
Soldering should be finished with the proper quantity. (Refer to the example)
4 Make sure the screws are tightly fastened.
Please be sure that all screws are fastened, and that there are no loose screws.
5 Make sure each connectors are correctly inserted.
Please be sure that all connectors are inserted, and that there are no imperfect insertion.
6 Make sure the wiring cables are set to their original state.
Please replace the wiring and cables to the original state after repairs.
In addition, be sure that there are no pinched wires, etc.
7 Make sure screws and soldering scraps do not remain inside the product.
Please check that neither solder debris nor screws remain inside the product.
8 There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.
Damaged power cords may lead to fire accidents, so please be sure that there are no damages.
If you find a damaged power cord, please exchange it with a suitable one.
9 There should be no spark traces or similar marks on the power plug.
When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure
connections and suitable usage. Please exchange the power cord if necessary.
a Safe environment should be secured during servicing.
When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries.
Please pay attention to your surroundings and repair safely.
2. Adjustments
To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification.
Adjustments should be performed in accordance with the procedures/instructions described in this manual.
4. Cleaning
For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper
cleaning should be performed to restore their performances.
3. Lubricants, Glues, and Replacement parts
Use grease and adhesives that are equal to the specified substance.
Make sure the proper amount is applied.
5. Shipping mode and Shipping screws
To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be
installed before shipment. Please be sure to follow this method especially if it is specified in this manual.
6 7 8
A
B
C
D
5
DDJ-T1
6 7 8
E
F
3

1
2 3 4
CONTENTS
SAFETY INFORMATION ..........................................................................................................................................................2
1. SERVICE PRECAUTIONS ....................................................................................................................................................5
A
B
C
D
E
F
1.1 NOTES ON SOLDERING ...............................................................................................................................................5
1.2 SERVICE NOTICE ..........................................................................................................................................................5
2. SPECIFICATIONS .................................................................................................................................................................6
2.1 SPECIFICATIONS...........................................................................................................................................................6
2.2 PANEL FACILITIES .........................................................................................................................................................7
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 OVERALL BLOCK DIAGRAM.......................................................................................................................................18
4.3 POWER BLOCK DIAGRAM..........................................................................................................................................20
5. DIAGNOSIS.........................................................................................................................................................................22
5.1 POWER ON SEQUENCE .............................................................................................................................................22
5.2 TROUBLESHOOTING ..................................................................................................................................................23
5.3 VOLTAGE MONITORING ..............................................................................................................................................31
5.4 HOW TO CHECK OPERATIONS USING THE TRAKTOR SOFTWARE......................................................................32
6. SERVICE MODE .................................................................................................................................................................36
6.1 OUTLINE OF SERVICE MODE ....................................................................................................................................36
6.2 DETAILS ON SERVICE MODE.....................................................................................................................................37
6.3 ABOUT THE DEVICE ...................................................................................................................................................40
7. DISASSEMBLY ....................................................................................................................................................................41
8. EACH SETTING AND ADJUSTMENT ................................................................................................................................49
8.1 NECESSARY ITEMS TO BE NOTED .................................................................................................
CO
NFIRMATION OF THE VERSIONS OF THE FIRMWARE ......................................................................................49
8.2
..........................49
8.3 UPDATING OF THE FIRMWARE..................................................................................................................................50
8.4 COPYING THE PROGRAM FOR THE USB CONTROLLER .......................................................................................51
8.5 JOG DIAL ROTATION LOAD ADJUSTMENT ...............................................................................................................52
9. EXPLODED VIEWS AND PARTS LIST ...............................................................................................................................54
9.1 PACKING SECTION......................................................................................................................................................54
9.2 EXTERIOR SECION .....................................................................................................................................................56
9.5 JOG SECTION..............................................................................................................................................................62
10. SCHEMATIC DIAGRAM ....................................................................................................................................................64
10.1 JACB ASSY.................................................................................................................................................................64
10.2 UCOM ASSY (1/6) ......................................................................................................................................................66
10.3 UCOM ASSY (2/6) ......................................................................................................................................................68
10.4 UCOM ASSY (3/6) ......................................................................................................................................................70
10.5 UCOM ASSY (4/6) ......................................................................................................................................................72
10.6 UCOM ASSY (5/6) ......................................................................................................................................................74
10.7 UCOM ASSY (6/6) ......................................................................................................................................................76
10.8 CDCB 1, CDCB 2, TCHB and JOGB ASSYS .............................................................................................................78
................................................................................................................................................................80
10.9 LEDB A
SSY
10.10 CDJ1B ASSY ............................................................................................................................................................82
10.11 CDJ2B ASSY ............................................................................................................................................................84
10.12 DJMB ASSY..............................................................................................................................................................86
10.13 MICB ASSY...............................................................................................................................................................88
10.14 CHFD, CRFD and HPJK ASSYS ..............................................................................................................................90
10.15 USBB ASSY..............................................................................................................................................................92
10.16 VOLTAGES................................................................................................................................................................94
10.17 WAVEFORMS ...........................................................................................................................................................95
11. PCB CONNECTION DIAGRAM ......................................................................................................................................100
11.1 JACB ASSY...............................................................................................................................................................100
11.2 UCOM ASSY.............................................................................................................................................................102
11.3 CDCB 1 ASSY ..........................................................................................................................................................106
11.4 CDCB 2 ASSY ..........................................................................................................................................................107
CHB
11.5 T
, JOGB and LEDB ASSYS ..............................................................................................................................108
11.6 CDJ1B ASSY ............................................................................................................................................................112
11.7 CDJ2B ASSY ............................................................................................................................................................116
11.8 DJMB ASSY..............................................................................................................................................................120
11.9 CHFD and CRFD ASSYS .........................................................................................................................................124
11.10 MICB ASSY.............................................................................................................................................................128
11.11 HPJK ASSY ............................................................................................................................................................129
11.12 USBB ASSY............................................................................................................................................................130
12. PCB PARTS LIST ............................................................................................................................................................131
4
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2 3 4
DDJ-T1

5
• 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.
• Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40 ºC.
Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 ºC in general, although
the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of
the soldering iron.
Do NOT use a soldering iron whose tip temperature cannot be controlled.
Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting
temperatures (hard to melt/easy to harden).
The following lead-free solders are available as service parts:
• Parts numbers of lead-free solder:
GYP1006 1.0 in dia.
GYP1007 0.6 in dia.
GYP1008 0.3 in dia.
• For checking of audio and operating elements, the DJ application (TRAKTOR) included with this product is used.
TRAKTOR must be installed in your PC. For details on installation, see "5.4 HOW TO CHECK OPERATIONS USING
THE TRAKTOR SOFTWARE."
For connection of this product with a PC, be sure to use the supplied USB cable (registered jig tool), whose operation
with this product is guaranteed.
Voltage Monitoring
This unit always monitors for power failure and will shut itself off immediately after an error is detected. All LEDs are unlit after
an error is generated. After the unit shuts itself off because of an error, disconnect the AC adapter and USB cable and wait at
least 1 minute before turning the unit back on. Repair the unit according to the diagnostic procedures described in
“5.3 VOLTAGE MONITORING.”
Limitations when the unit is operating on USB-bus power
There are some limitations in operations of this unit while it is operated on USB-bus power, as shown below.
• The JOG dial indicator does not light.
• Lighting of the indicators (excluding that for the JOG dial) becomes dim.
• The AUX IN and MIC connectors are disabled.
• The sound volume through the headphones is reduced.
On the EEPROM on the UCOM ASSY
No program has been stored in the EEPROM (IC2003) on the UCOM Assy (blank ROM) when it is supplied as a part for
service.
After the EEPROM is replaced, be sure to copy the program for the USB controller to it. For details, see “8.4 Copying the
Program for the USB Controller.”
Replacement of the MAIN_UCOM
When replacement of the MAIN_UCOM (IC701) is required, order a microcomputer dedicated for service (PEG850A8-K).
6 7 8
1. SERVICE PRECAUTIONS
1.1 NOTES ON SOLDERING
A
B
1.2 SERVICE NOTICE
DDJ-T1
5
6 7 8
C
D
E
F
5

1
AC adapter
Power..................................AC 100 V to 240 V, 50 Hz/ 60 Hz
Rated current.............................................................300 mA
Rated output........................................................DC 5 V, 2 A
General – Main Unit
Power consumption (when using AC adapter)...........700 mA
Power consumption (when using USB bus power)....500 mA
Main unit weight.............................................4.9 kg (10.8 lb)
Max. dimensions.....680 mm (W) × 95.2 mm (H) × 317.7 mm (D)
(26.8 in. (W) × 3.7 in. (H) × 12.5 in. (D))
Tolerable operating temperature......+5 °C to +35 °C (+41 °F to +95 °F)
Tolerable operating humidity..................5 % to 85 % (no condensation)
Audio Section
Rated output level
MASTER OUT 1.................................................4.2 Vrms
MASTER OUT 2.................................................2.1 Vrms
Total harmonic distortion
MASTER OUT 1..................................................0.006 %
MASTER OUT 2..................................................0.006 %
Frequency characteristic
MASTER OUT 1......................................20 Hz to 20 kHz
MASTER OUT 2......................................20 Hz to 20 kHz
S/ N ratio (when playing on computer)
MASTER OUT 1.........103 dB or greater (at rated output)
MASTER OUT 2.........103 dB or greater (at rated output)
Input impedance
AUX..........................................................................24 kΩ
MIC..........................................................................10 kΩ
Output impedance
MASTER OUT 1............................................1 kΩ or less
MASTER OUT 2............................................1 kΩ or less
PHONES...................................................................41 Ω
Input / Output terminals
USB terminal
B type...................................................................1 set
MASTER OUT 1 output terminal
TRS phone jack (Ø 6.3 mm).................................1 set
MASTER OUT 2 output terminal
RCA pin jacks.....................................................1 sets
PHONES output terminal
Stereo phone jack (Ø 6.3 mm).............................1 set
Stereo mini phone jack (Ø 3.5 mm)......................1 set
AUX input terminal
RCA pin jack.......................................................1 sets
MIC input terminal
Phone jack (Ø 6.3 mm).........................................1 set
• For improvement purposes, specifications and design of
this unit and the included software are subject to change
without notice.
• TRAKTOR Pioneer DDJ-T1 EDITION software CD-ROM
(DXX2665)
• Driver software CD-ROM
(DXX2666)
• USB cable
(DDE1140)
• Operating instructions
(SVYXJ8: DRB1537, DRB1563)
(UXJCB: DRB1536)
(FLPXJ: DRB1539)
(KXJ5: DRB1541)
(AXJ5: DRB1540)
Accessories
• AC adapter
(DWR1491)
• Power plug
(SVYXJ8: DKX1048, DKX1049)
(UXJCB: DKX1047)
(FLPXJ: DKX1048, DKX1049, DKX1047, DKX1050, DKX1051)
(KXJ5: DKX1051)
(AXJ5: DKX1052)
2. SPECIFICATIONS
2.1 SPECIFICATIONS
A
2 3 4
B
C
D
E
F
6
1
2 3 4
DDJ-T1

5
No.
Procedures Check points
1
2
3
4
5
7
6
Confirm that the customer complaint has been resolved.
If the problem pointed out by the customer occurs with a
specific source or operation, such as PC input, AUX/MIC input,
Fader, or VOL, input that specific source then perform that
specific operation for checking.
The customer complain must not be reappeared.
Audio and operations must be normal.
Confirmation of operation of operating elements 1
Enter Service mode.
There must be no errors in operations of each button, LED, the
JOG dial, and NeedleSearch.
Confirmation of operation of operating elements 2
Connect this unit with a PC with the DJ application (TRAKTOR)
installed, via USB.
There must be no errors in operations of volume controls,
faders, and rotary encoders.
Check the analog audio output.
Connect this unit with a PC with the DJ application (TRAKTOR)
installed, via USB, then play back audio
There must be no errors, such as noise, in audio signals and
operations of the MASTER/HEADPHONES outputs.
Check the analog audio input.
Input an audio signal via AUX/MIC. (Make the input settings,
referring to “Inputting Audio from Microphones or External
Equipment” in the Operating Instructions.)
Audio and operations must be normal.
Check the appearance of the product.
No scratches or dirt on its appearance after receiving it for
service.
Confirmation of USB-bus Power
Disconnect the AC adapter and operate the unit only on
USB-bus power.
Audio and operations must be normal.
(For details on limitations of USB-bus power, refer to the
Operating Instructions.)
Item to be checked regarding audio
Distortion
Noise
Volume too low
Volume too high
Volume fluctuating
Sound interrupted
Items to be checked after servicing
To keep the product quality after servicing, confirm recommended check points shown below.
See the table below for the items to be checked regarding audio.
Lubricants and Glues List
Name Part No. Remarks
Lubricating oil GYA1001 Refer to “9.5 JOG SECTION”.
Jigs List
Jig Name Part No. Purpose of use / Remarks
USB cable GGP1188 for PC connection, accessory
AC adapter DWR1491 Accessory (Note: The power plug part is different.)
6 7 8
3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
A
B
3.2 JIGS LIST
C
D
E
5
6 7 8
DDJ-T1
F
13

5
[0] Prior Confirmation
[0-1] Checking in Service Mode
[0-2] Checking Internal Cables
[1] Failure in Startup (Failure in power-on, all LEDs unlit)
[1-1] Failure in the power system
In this section, causes of failure, diagnostics points, and corrective measures can be searched for according to symptoms.
Before disassembling this unit, it is recommended to infer a failure point by referring to the error code.
For the relationship of each power-supply system, see “4.3 POWER SUPPLY BLOCK DIAGRAM.”
If software of the product is updated before performing diagnostics, check that software updating has been performed
properly before proceeding to diagnostics.
If software updating has not been performed properly, update the software, following the instructions in
“8.3 UPDATING OF THE FIRMWARE.”
Contents
[0] Prior Confirmation
[1] Failure in Startup (Failure in power-on, all LEDs unlit)
[2] Display (LED indicators)
[3] Operations (Buttons/VRs/Sliders/NeedleSearch/JOG)
[4] USB connection
[5] AUDIO OUT
[6] AUDIO IN
[7] Basic Operation Check of the MAIN_UCOM
The waveform numbers and voltage confirmation-point numbers described in this section correspond to the numbers on the
schematic diagrams and PCBs.
Be sure to check the failure points, as well as checking for failure in their peripheral circuits.
In a case where the unit does not start up, even after it is turned ON, when it is powered via the AC adapter or USB-bus power connection.
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
1 – Service Mode Identify a failure point.
After a failure point is identified, see the section
referenced in this manual.
6. SERVICE
MODE
No.
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
1
Disconnection,
breakage, or
loose connection
of internal cables
Cables
Check that all the cables are securely
connected. Check that there is no breakage
in the cables.
Securely connect a cable if it is not connected.
If a cable is broken, replace it.
Note: If an FFC cable is disconnected, be careful of
the orientation of the contacts when reconnecting it,
referring to the printed guide on the board.
4.1 OVERALL
CONNECTION
DIAGRAM
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
1
Failure in the
AC adapter
USBB Assy
V+ADP5
Set the POWER switch to OFF.
Check that the voltage of the V+ADP5
power line is in the range of 4.75–5.25 V.
If the voltage is outside the range of 4.75–5.25 V,
failure in the AC adapter and its periphery may be
suspected. AC adapter (DWR1491), DC jack
(JA2501), FETs (Q2523, Q2525), Tra ( )
4.3 POWER
SUPPLY BLOCK
DIAGRAM
4.3 POWER
SUPPLY BLOCK
DIAGRAM
4.3 POWER
SUPPLY BLOCK
DIAGRAM
4.3 POWER
SUPPLY BLOCK
DIAGRAM
2
Failure in USBbus power
USBB Assy
V+USB5
Set the POWER switch to OFF.
Check that the voltage of the V+ADP5
power line is in the range of 4.75–5.25 V.
If the voltage is outside the range of 4.75–5.25 V,
failure in the USB-bus power and its periphery may
be suspected. Check the USB cable and USB
connector.
3-1
Power failure in the
MAIN_UCOM on
the UCOM Assy
UCOM Assy
MAIN_UCOM
Set the POWER switch to ON.
If V+3R3_UCOM is abnormal (2.7 V or less)
and V+4R7_STB is normal (4.2–5.0 V)
The regulator (IC105), the MAIN_UCOM (IC701),
or their peripheral circuits may be defective.
3-2
Power failure in the
USB_UCOM on
the UCOM Assy
UCOM Assy
USB_UCOM
Set the POWER switch to ON.
If V+3R3_USB is abnormal (2.7 V or less)
and the V+5_USB is normal (4.5 V–5.25 V)
The regulator (IC102), the USB_UCOM (IC202),
or their peripheral circuits may be defective.
10.17
WAVEFORMS
AC adapter
4
10.17
WAVEFORMS
Power bus power
1
6 7 8
5.2 TROUBLESHOOTING
A
B
5
DDJ-T1
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1
[1-2] Failure in the microcomputer system
4-1 Power failure 1
UCOM Assy
FAULT_DET
Check if the voltage monitoring circuit was
activated:
Turn the unit ON then check the voltages
shown below.
V+5_D:
FAULT_DET, R147 (0 Ω) :
Turn the unit ON then check the voltages shown below.
V+5_D: 2 V or less (abnormal voltage), 4.5 V or higher
(normal voltage)
FAULT_DET, R147(0
Ω
): 0 V (abnormal voltage detection),
3.3 V (normal voltage)
In a case of abnormal voltage detection, see [4–2] Power
failure
2
.
In a case of normal voltage, poor control over the
microcomputer system may be suspected.
4.3 POWER
SUPPLY BLOCK
DIAGRAM
5.3 VOLTAGE
MONITORING
4.3 POWER
SUPPLY BLOCK
5.3 VOLTAGE
MONITORING
4.1 OVERALL
CONNECTION
DIAGRAM
4.3 POWER
SUPPLY BLOCK
4.1 OVERALL
CONNECTION
DIAGRAM
4.3 POWER
SUPPLY BLOCK
5.3 VOLTAGE
MONITORING
4-2
Power failure 2
Identification of
defective Assy
UCOM Assy
FAULT_DET
CDJB
CDCB
DJMB
JACB
HPJK
MICB
Identify the Assy on which a voltage error
was generated.
Remove all cables other than the cable for
CN1004 (USBB to UCOM) from the UCOM
Assy.
Turn the unit ON then check the V+5_D
voltage.
V+5_D:
FAULT_DET, R147 (0 Ω):
Remove all cables other than the cable for CN1004 (USBB
to UCOM) from the UCOM Assy.
Turn the unit ON then check the V+5_D voltage.
V+5_D: 4.5 V or higher (normal)
FAULT_DET, R147(0 Ω): 3.3 V normal, no detection of a
voltage error)
In a case of normal voltage, see [4–3] Abnormal voltage
detection
3
.
In a case of abnormal voltage detection, see [4-4] Power
failure, UCOM Assy.
4-3
Power failure 3
Identification of
defective Assy
UCOM Assy
FAULT_DET
CDJB
CDCB
DJMB
JACB
HPJK
MICB
With all cables other than the cable for
CN1004 (USBB to UCOM) disconnected
from the UCOM_ASSY, identify the defective
Assy by connecting each connector on the
UCOM Assy one by one for voltage checks.
Identify the defective ASSY, by connecting each connector
on the UCOM Assy, as shown below, one by one for
voltage checks:
CDJ1B: CN905, CN906
CDJ2B: CN903, CN904
CDCB: CN901, CN902
DJMB: CN1001, 1002
JACB: CN302, CN501
HPJK: CN301
MICB: CN303
Repair the defective part of the defective Assy.
If further identification of defective Assys is required, see
the notes in “5.3 Voltage Monitoring” before proceeding to
further diagnostics.
4-4
Power failure 4
UCOM Assy
Identification of
defective Assy
UCOM Assy
FAULT_DET
Deactivate the voltage monitoring circuit
then check the section with improper
voltage.
The voltage monitoring circuit can be deactivated by
removing R147 (0 Ω) on the FAULT_DET.
See the notes in “5.3 Voltage Monitoring” before
proceeding to further diagnostics.
To identify the section with improper voltage, check
the voltage at each point on the UCOM Assy.
1
Power failure in
the MAIN_UCOM
UCOM Assy
Check if a voltage error was detected.
Check the power terminal of the
MAIN_UCOM (IC701).
If the detected voltage error is confirmed, check conduction
between the power supply and GND.
Check the power line and the parts, such as coils (beads),
resistors, and capacitors.
If no problem was found with the parts, power line, and
conduction between the power supply and GND, the
MAIN_UCOM
(IC701) may be defective.
Abnormal
Voltage Detection
2
MAIN_UCOM
Reset circuit
error
UCOM Assy
Check the Reset terminal (Pin 17) of the
MAIN_UCOM (IC701). (High/Low)
In normal operation, the voltage of the Reset terminal
(Pin 17) is high.
If the voltage of the Reset terminal is low, check the power
line, resistors, capacitors, and the Reset IC (IC106).
If the voltage level remains low after the Reset IC (IC106)
is replaced, the
MAIN_UCOM
(IC701) may be defective.
3
MAIN_UCOM
X'tal error
UCOM Assy
Check the oscillation waveforms of the
X'tal (X701).
Check the waveforms of the X'tal (X701).
If an error is found, check the power line, resistors, and
capacitors.
If the waveform remains abnormal after the X'tal (X701) is
replaced, the
MAIN_UCOM
(IC701) may be defective.
4
MAIN_UCOM
startup error
UCOM Assy
After startup, check the lighting statuses of
the LEDs.
(For example, although some of the LEDs
light properly, the unit is not started up
properly.)
Refer to “[4] Error Indications” in the 6. Service Mode.
If there is no corresponding error indication, reload the
program via USB.
If the normal status is not recovered after all above steps
are performed, the
MAIN_UCOM
(IC701) may be
defective.
6. Service Mode
[4]
Error Indications
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
10.17
WAVEFORMS
Abnormal voltage
detection
k, p
10.17
WAVEFORMS
Abnormal voltage
detection
k, p
10.17
WAVEFORMS
MAIN UCOM
start up
10.17
WAVEFORMS
MAIN UCOM
start up
i
10.17
WAVEFORMS
MAIN UCOM
start up
j
A
2 3 4
B
C
D
E
F
24
1
DDJ-T1
2 3 4

5
[2] Display (LED indicators)
[2-1] Any one of the LEDs does not light.
[3] Operations (Buttons/VRs/Sliders/NeedleSearch/JOG)
[3-1] The push buttons are disabled.
5
Power failure in
the USB_UCOM
UCOM Assy
Check if a voltage error was detected.
Check the power terminal of the
USB_UCOM (IC202).
If the detected voltage error is confirmed, check conduction
between the power supply and GND.
Check the power line and the parts, such as coils (beads),
resistors, and capacitors.
If no problem was found with the parts, power line, and
conduction between the power supply and GND, the USB_
UCOM (IC202) may be defective.
Abnormal
Voltage Detection
6
USB
_UCOM
Reset circuit
error
UCOM Assy
Check the Reset terminal (Pin 10) of the
USB_UCOM (IC202). (High/Low)
In normal operation, the voltage of the Reset terminal
(Pin 10) is high.
If the voltage level at the Reset terminal is low, check for
abnormal voltage detection, and check the power line,
resistors, and capacitors. If no problem was found with the
above circuit, parts, and power line, and if the voltage level
is low, the USB_UCOM (IC202) or the MAIN_UCOM
(IC701) may be defective.
Abnormal
Voltage Detection
7
USB
_UCOM
X'tal error
UCOM Assy
Check the oscillation waveforms of the
X'tal (X201).
If an error is found, check the power line, resistors, and
capacitors.
If the waveform remains abnormal after the X'tal (X201) is
replaced, the USB_UCOM (IC202) may be defective.
8
USB
_UCOM
I2C communication error
UCOM Assy
Check the I2C communication waveforms of the
EEPROM (IC201) immediately after startup.
Data of the EEPROM (IC201) are loaded only during
startup.
If an error is generated, check the power supply to the
EEPROM, resistors, capacitors, and SW IC (IC203) on the
communication line.
If no problem is found with the power supply, communication line, and parts, the EEPROM (IC201) or USB_UCOM
(IC202) may be defective.
9
EEPROM error
UCOM Assy Reload the program via USB.
If no problem is found with the communication waveform in
[8] above, reload the program via USB.
If reloading is successfully performed, the USB_UCOM
(IC202) may be defective.
If reloading fails, the EEPROM (IC201) may be defective.
1 Defective LED LERelated point
Check the connections of the LED then
check the forward voltage (approx. 2.2 V)
between both ends of the LED.
If the forward voltage is abnormal, the LED may be
defective.
LED waveform
10.SCHEMATIC
DIAGRAM
[2-2] Several LEDs do not light.
1 Signal errors
UCOM Assy
CDJ1B
CDJ2B
DJMB
Check for any loose connections between
the MAIN_UCOM (IC701) and the LEDs.
Check also that the control signal for the
LEDs is output.
If the control signal is not output, check the
mounting status of the MAIN_UCOM (IC701).
If it is properly mounted, then the IC701 itself may
be defective.
Basic Operation
Check of the
MAIN_UCOM
Basic Operation
Check of the
MAIN_UCOM
2 Defective LEDs Related point
Check the forward voltage (approx. 2.2 V)
between both ends of the LEDs.
If the forward voltage is abnormal, the LEDs may be
defective.
LED waveform
10.SCHEMATIC
DIAGRAM
3
Defective
transistors
Related point Check the transistors. The transistors may be defective.
10.SCHEMATIC
DIAGRAM
Operation of all buttons, variable controls, and the JOG dial can be confirmed in Service mode.
1
Loose connection
or defective
switches
Related point
Check for any loose connections on the
signal line from the switch to GRID_IC
(IC702), KEY_BUFFER (IC1101, 1102),
and main microcomputer (IC701).
If other SWs connected to the same signal line
function properly and if the connections are properly
made, the SW may be defective.
Each Signal
Levels
2
Defective MAIN_
UCOM (IC701)
UCOM Assy
If the symptom persists after the above
corrections.
Go to [7-1] Basic Operation Check of the
Microcomputer.
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
10.17
WAVEFORMS
USB UCOM
start up
10.17
WAVEFORMS
USB UCOM
start up
c
10.17
WAVEFORMS
USB UCOM
start up
d
10.17
WAVEFORMS
I2C USB UCOM
EEPROM
8.4 COPYING THE
PROGRAM FOR THE
USB CONTROLLER
6 7 8
A
B
C
5
DDJ-T1
6 7 8
D
E
F
25

1
[3-2] Rotary selector not controllable
1
Defective
AUTO_LOOP
of the CDJ1
CDJ1 Assy
Check that the signal lines (L_ENC1_1/
L_ENC1_2) are normal during rotation of
the rotary selector.
L_ENC1_1: CN3002-1 pin
L_ENC1_2: CN3002-2 pin
If the signals are not normal, check the connections of the
signal lines. If the connections are properly made, the
rotary selector (S3030) may be defective. Replace it.
Each Signal
Levels
2
Defective
AUTO_LOOP
of the CDJ2
CDJ2 Assy
Check that the signal lines (L_ENC2_1/
L_ENC2_2) are normal during rotation of
the rotary selector.
L_ENC2_1: CN3502-6 pin
L_ENC2_2: CN3502-5 pin
Check that the signal lines (CUR_ENC1/
CUR_ENC2) are normal during rotation of
the rotary selector.
CUR_ENC1: CN4002-21 pin
CUR_ENC2: CN4002-22 pin
If the signals are not normal, check the connections of the
signal lines. If the connections are properly made, the
rotary selector (S3527) may be defective. Replace it.
Each Signal
Levels
3
Defective
DJM
BROWSE
DJMB Assy
If the signals are not normal, check the connections of the
signal lines. If the connections are properly made, the
rotary selector (S4027) may be defective. Replace it.
Each Signal
Levels
4
Defective
MAIN_UCOM
(IC701)
UCOM Assy
If the symptom persists after the above
corrections.
Check the mounting status of the MAIN_UCOM (IC701).
If it is properly mounted, then the IC701 itself
may be defective.
Basic Operation
Check of the
MAIN_UCOM
Basic Operation
Check of the
MAIN_UCOM
Basic Operation
Check of the
MAIN_UCOM
[3-3] VRs or sliders not controllable
The variable controls on the CDJ1 and CDJ2 Assys or the sliders on the CHFD and CRFD ASSYs are not controllable.
VRs on the DJMB ASSY not controllable.
1
Loose
connection
CDJ1/CDJ2 Assy
CHFD Assy
CRFD Assy
Check for any loose connections on the
signal line from the MAIN_UCOM (IC701)
to each variable control or slider.
If any connection on the signal line is improper, resolder
the parts.
—
2
Defective
sliders or VRs
CDJ1/CDJ2 Assy
CHFD Assy
CRFD Assy
VRs: Check the signal level.
Tempo slider: Check the levels of the
ADCT and ADIN signals.
CHFD, CRFD: Check the signal level.
VRs: If the voltage of the signal from a VR (Pin 2) does not
change between 3.3 V and 0 V, that VR may be defective.
Tempo slider: If the value of the voltage of the ADCT signal
(Pin 4) is other than 1.65 V, or if the voltage of the ADIN
signal (Pin 2) does not change between 3.3 V and 0 V, the
tempo slider may be defective.
CHFD, CRFD: If the voltage of the signal from the CHFD
or CRFD (Pin 2) does not change between 3.3 V and 0 V,
the slider may be defective.
Each Signal
Levels
Each Signal
Levels
3
Defective
MAIN_UCOM
(IC701)
UCOM Assy
If the symptom persists after the above
corrections.
Check the mounting status of the MAIN_UCOM (IC701).
If it is properly mounted, then the IC701 itself
may be defective.
4
Loose
connection
DJMB Assy
Check for any loose connections on the signal
line from each VR to Analog SW_IC (IC4001,
IC4002, IC4003) and the main microcomputer
(IC701).
Signal line: AD_0–4, AD_SW_A, AD_SW_B
If any connection on the signal line is improper, resolder
the parts.
—
5 Defective VRs DJMB Assy VRs: Check the signal level.
VRs: If the voltage of the signal from a VR (Pin 2) does not
change between 3.3 V and 0 V, that VR may be defective.
6
Defective
MAIN_UCOM
(IC701)
UCOM Assy
If the symptom persists after the above
corrections.
Check the mounting statuses of the MAIN_UCOM (IC701)
and the Analog SW_IC (IC4001, IC4002, IC4003).
If they are properly mounted, then the IC701, IC4001,
IC4002, or IC4003 may be defective.
[3-4] NeedleSearch error
1
CDC IC Error/
Needlepad disabled (Incl. steps 4
and 5 of [4] Error
indications in the
6. Service Mode)
UCOM/CDCB
Assy
Check the communication waveform
between the needlepad and the MAIN_
UCOM (IC701).
If the waveform is not proper, check the communication
line, resistors, and capacitors.
Check also that the cables between the boards and their
connections are proper.
If the normal status is not recovered after all above steps
are performed, the CDC IC or the MAIN_UCOM (IC701)
may be defective.
2
Only some of the
commands from
the needlepad are
recognized.
UCOM/CDCB
Assy
Check that no foreign matter is between
the Needlepad board and the cabinet.
If the Needlepad operates improperly although there is no
foreign matter between the Needlepad board and the
cabinet, check [2] above.
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
10.17
WAVEFORMS
CDC IC control 1/2
A
B
2 3 4
C
D
E
F
26
1
2 3 4
DDJ-T1

5
[3-5] Abnormalities regarding the JOG dial
After the JOG Assy is disassembled then reassembled, be sure to check that the load value for the JOG dial is within the specified range.
Refer to the "8.5 JOG DIAL ROTATION LOAD ADJUSTMENT".)
Turning of the JOG dial is not detected.
1
Defective JOGB
photo interrupter
UCOM Assy
CDJ1ssy
/CDJ2 Assy
LEDB Assy
JOGB Assy
Check the waveforms on the JOG1_1,
JOG1_2, JOG2_1, and JOG2_2 signal lines.
JOG1_1: CN905-2 pin
JOG1_2: CN905-3 pin
JOG2_1: CN905-24 pin
JOG2_2: CN905-23 pin
If any waveform cannot be recognized, connection
of that signal line may be loose or the photo
interrupter (PC3201) may be defective.
10.17
WAVEFORMS
2
Defective
MAIN_UCOM
(IC701)
UCOM Assy
If the symptom persists after the above
corrections.
Check the mounting status of the MAIN_UCOM
(IC701). If it is properly mounted, then the IC701
itself may be defective.
Basic Operation
Check of the
MAIN_UCOM
Pressing on the JOG dial cannot be detected.
3
Defective
TCHB photo
interrupter
UCOM Assy
CDJ1 Assy
/CDJ2 Assy
TCHB Assy
JOGB Assy
Check the signal level of the JOG_TCH1/2
(Pins 46/47 of IC701) when the JOG dial is
pressed.
If the signal level of the JOG_TCH1/2 (Pins 46/47 of
IC701) does not become L when the dial is pressed
and H when the dial is released (not pressed,) loose
connection of the signal line or a defective photo
interrupter (IC3301) may be suspected.
Each Signal
Levels
4
Defective
MAIN_UCOM
(IC701)
UCOM Assy
If the symptom persists after the above
corrections.
Check the mounting status of the MAIN_UCOM
(IC701) and SW IC (IC702). If they are properly
mounted, then the IC701 or IC702 may be defective.
—
Noise is heard when the JOG dial is turned.
5
Defective gear
Defective JOG
DIAL B
JOG Assy
There may be any scratches on the gear
or some foreign matter between the gears.
If there are any scratches, replace the scratched
gear with a new one.
If there is any foreign matter, remove it then replace
the gears with new ones.
Gears to be replaced: Load gear, Encoder gear,
JOG shaft
—
There may be any scratches or some
foreign matter on the JOG DIAL B or the
Roller B Assy.
If there are any scratches, replace the scratched
gear with a new one.
If any foreign matter is attached, remove it.
—
The JOG dial turns too freely. (The load value for the JOG dial is outside the specified range.)
6
Improper
adjustment or
assembly of the
JOG dial
JOG Assy
Check that the load value for the JOG dial
is within the specified range, referring to
“Measuring method” in “8.5 JOG Dial
Rotation Load Adjustment.”
If it is outside the specified range, adjust the position
of the Adjust Plate to change the load value for the
JOG dial, referring to “Load adjustment method” in
“8.5 JOG Dial Rotation Load Adjustment.”
8.5 JOG Dial
Rotation Load
Adjustment.
8.5 JOG Dial
Rotation Load
Adjustment.
8.5 JOG Dial
Rotation Load
Adjustment.
8.5 JOG Dial
Rotation Load
Adjustment.
During the above adjustment, if the upper-limit
adjustment position of the Adjust Plate is reached,
oil may have been spattered on the Adjust Plate.
Replace the washer, load gear, and cam plate with
new ones, then reassemble.
Resistance to turning the JOG dial is too strong. (The load value for the JOG dial is outside the specified range.
7
Improper
adjustment of
the JOG dial or
defective washer,
gear, or cam plate
JOG Assy
Check that the load value for the JOG dial
is within the specified range, referring to
“Measuring method” in “8.5 JOG Dial
Rotation Load Adjustment.”
If it is outside the specified range, adjust the position
of the Adjust Plate to change the load value for the
JOG dial, referring to “Load adjustment method” in
“8.5 JOG Dial Rotation Load Adjustment.”
During the above adjustment, if the lower-limit
adjustment position of the Adjust Plate is reached,
shavings from the worn-out washer may have
increased the friction. Replace the washer, load gear,
and cam plate with new ones, then reassemble.
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
10.17
WAVEFORMS
JOG rotation
operation W
6 7 8
A
B
C
D
E
F
DDJ-T1
5
6 7 8
27

1
[4] USB connection
[4-1] The unit cannot be recognized by the PC when connected to the PC via USB connection.
Check the following, with a Windows/MAC PC connected via the USB port of the unit, using the supplied USB cable:
1 Failure in startup
UCOM/USBB
Assy
Check the lighting statuses of the LEDs
during startup.
If no LED lights, see [1] Failure in Startup.
[1] Failure in
Startup
2
Defective
USB_UCOM
UCOM/USBB
Assy
Check the communication waveforms of
the USB DP/DN lines.
If the unit is connected to a PC via the USB cable,
communication will be performed through the USB
DP/DN lines.
If communication cannot be performed, check the
USB cable, connectors, internal cables, resistors,
capacitors, and filters.
If nothing is wrong with them, check the items listed
in “Failure in the microcomputer system” and “USB
UCOM startup error.”
Failure in the
microcomputer
system
USB_UCOM
startup error
[5] AUDIO OUT
[5-1] No signal is output from the MASTER connectors
1 — MASTER1/2
Identify the connector(s) that do(es) not
output signals.
Check if no signal is output from both MASTER 1 and 2 or
either of them.
• If neither MASTER 1 nor 2 connector outputs, go to [2].
• If only the MASTER 1 connector does not output, go to [7].
• If only the MASTER 2 connector does not output, go to [8].
—
2 — UCOM Assy
Check the audio signal, using Pins 5 and 9
of the CN501 on the UCOM Assy.
If no audio signal is output, loose connection or
defective parts in the UCOM Assy may be suspected.
• If an audio signal is output, go to [7] or [8].
• If an audio signal is not output, go to [3].
10.4 UCOM
ASSY (3/6)
10.4 UCOM
ASSY (3/6)
10.4 UCOM
ASSY (3/6)
10.4 UCOM
ASSY (3/6)
10.4 UCOM
ASSY (3/6)
10.1 JACB ASSY
10.1 JACB ASSY
3 — UCOM Assy
Check that an audio signal is output from
DAC (IC506).
• If an audio signal is output, go to [5].
• If an audio signal is not output, go to [4].
4 UCOM Assy
Check the digital input signals to DAC (IC506).
• DAC_RST
• MCLK
• BCLK
• LRCK
• MASTER_DATA
If any of the signals is not input, check the soldering
status of DAC (IC506).
If the level of DAC_RST is L, check the connections
of the MAIN_UCOM (IC701). If nothing is wrong with
the connec-tions, then the MAIN_UCOM (IC701)
itself may be defective.
If other signals are not input, check the connections
of the USB_UCOM (IC202). If nothing is wrong with
the connections, then the USB_UCOM (IC202) itself
may be defective.
5 UCOM Assy
Check that the MUTE signal level is L
(muting canceled).
If the MUTE signal level is L (muting canceled,)
check the connections between the DAC and CN501.
If nothing is wrong with the connections, soldering of
the OP amp (IC501) or the OP amp itself may be
defective.
If the MUTE signal level is H, go to [6].
6 UCOM Assy
Check that the A_MUTE signal level is L
(muting canceled).
If the A_MUTE signal level is L (muting canceled,)
check that the signal logics for Q583/Q505/Q506/
Q581/Q582 are the same as those described in the
schematic diagrams. If any of the signal logic is not
the same, repair the defective point.
If the A_MUTE signal level is not L (muting canceled),
the soldering status of the MAIN_UCOM (IC701) or
the MAIN_UCOM itself may be defective.
7 JACB Assy
Identify the point where the audio signal is
interrupted on the line from CN4401 to the
jacks (JA4402/JA4404).
If the audio signal is interrupted at the periphery of
the OP amp (IC4403/IC4405), check the soldering
status of the OP amp. If it is properly soldered, then
the OP amp itself may be defective.
8 JACB Assy
Identify the point where the audio signal is
interrupted on the line from CN4401 to the
jacks (JA4403).
If the audio signal is interrupted at the periphery of
the OP amp (IC4404), check the soldering
status of the OP amp. If it is properly soldered, then
the OP amp itself may be defective.
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
10.17
WAVEFORMS
USB DP/DN (1),(2)
t, u
10.17
WAVEFORMS
DAC reset cancel
DAC I2S (1),(2)
10.17
WAVEFORMS
Output MUTE cancel
#
10.17
WAVEFORMS
Output MUTE cancel
"
A
2 3 4
B
C
D
E
F
28
1
2 3 4
DDJ-T1

5
[5-2] No signal is output from the HP connector
1 — UCOM Assy
Check the audio signal, using Pins 3 and 5
of the CN301 on the UCOM Assy.
If no audio signal is output, loose connection or defective parts in the UCOM Assy may be suspected.
• If an audio signal is output, go to [5].
• If an audio signal is not output, go to [2].
2 — UCOM Assy
Check that the audio signal is output from
DAC (IC304).
• If an audio signal is output, go to [4].
• If an audio signal is not output, go to [3].
3 UCOM Assy
Check the digital input signals to DAC
(IC304).
• DAC_RST (IC304-5 pin)
• HP_DATA (IC304-3 pin)
For DAC_RST, check the soldering status of DAC
(IC304). If the HP_DATA signal is not input, check
the connections of the USB_UCOM (IC202).
If nothing is wrong with the connections, then the
USB_UCOM (IC202) itself may be defective.
4 UCOM Assy
Identify the point where the audio signal is
interrupted on the line from DAC (IC304) to
the CN301.
If the audio signal is interrupted at the periphery of
the OP amp (IC305), soldering of the OP amp or the
OP amp itself may be defective.
5 HPJK Assy
Identify the point where the audio signal is
interrupted on the line from CN4801 to
the JA4801.
If the audio signal is interrupted at the periphery of
the OP amp (IC4801), soldering of the OP amp or the
OP amp itself may be defective.
[6] AUDIO IN
[6-1] The input signal to AUX/MIC is not output.
0
Prior confirmation
of input
TRAKTOR setting
AC adaptor connection
AUX/MIC
Check that the TRAKTOR input setting is properly
made. Check that the AC adaptor is properly
connected. (When USB-bus power is used, the
signal input to AUX/MIC is not available.)
Operating
Instructions
10.3 UCOM
ASSY (2/6)
10.3 UCOM
ASSY (2/6)
10.3 UCOM
ASSY (2/6)
10.3 UCOM
ASSY (2/6)
10.1 JACB
ASSY
10.13 MICB
ASSY
10.3 UCOM
ASSY (2/6)
10.3 UCOM
ASSY (2/6)
10.2 UCOM
ASSY (1/6)
10.4 UCOM
ASSY (3/6)
10.3 UCOM
ASSY (2/6)
10.3 UCOM
ASSY (2/6)
10.3 UCOM
ASSY (2/6)
10.3 UCOM
ASSY (2/6)
10.14 HPJK
ASSY
1 — AUX/MIC
Identify the connector(s) whose input
signal(s) is(are) not output.
Check if the signal can be input neither AUX nor MIC
or either of them.
• If neither of them can receive signals, go to [2].
• If only the AUX connector cannot receive signals, go to [7].
• If only the MIC connector cannot receive signals, go to [8].
2
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
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
Loose connection
/defective parts
UCOM Assy
Check that the audio signal is input to the
ADC (IC303).
• If an audio signal is output, go to [3].
• If an audio signal is not output, go to [5].
3 UCOM Assy
Check the digital input signals to ADC
(IC303).
• ADC_RST (IC303-13 pin)
• MIC_AUX_DATA (IC303-1,2 pins)
If the level of ADC_RST is L, check the connections
of the MAIN_UCOM (IC701). If nothing is wrong with
the connections, then the MAIN_UCOM (IC701)
itself may be defective.
If the MIC_AUX_DATA signal is not input, check the
connections. If nothing is wrong with the connections,
then the ADC (IC303) may be defective.
4 UCOM Assy
Check the connections of the USB_UCOM
(IC202).
If nothing is wrong with the connections, then soldering of the USB_UCOM (IC202) or the USB_UCOM
itself may be defective.
5 UCOM Assy
Check that the AIN_MUTE signal level is L
(muting canceled).
If it is not L (muting canceled,) check Q509. If the
symptom persists, soldering of the MAIN_UCOM
(IC701) or the MAIN_UCOM itself is defective.
6 UCOM Assy
Check the connections between the SW AMP
(IC301/IC302) and ADC (IC303) of the MAIN.
If the connections are properly made, soldering of the
SW AMP (IC301/IC302) or the SW AMP itself is defective.
7 JACB Assy
Check that an audio signal is input to Pins 4
and 6 of the CN4402.
If a signal is input, go to [9].
If a signal is not input, identify the point where the audio
signal is interrupted on the line from the AUX terminal
(JA4401) to the CN4402.
If an audio signal is interrupted at the periphery of the
OP amp (IC4401/IC4402), soldering of the OP amp or
the OP amp itself may be defective.
8 MICB Assy
Check that an audio signal is input to Pin 4
of the CN4601.
If a signal is input, go to [9].
If a signal is not input, identify the point where the audio
signal is interrupted on the line from the MIC terminal
(JA4601) to the CN4601.
If an audio signal is interrupted at the periphery of the
OP amp (IC4601), soldering of the OP amp or the OP
amp itself may be defective.
9 UCOM Assy
Check the connections between CN302
(AUX)/CN303 (MIC) and SW AMP (IC301
/IC302).
If the connection is improperly made, correct it.
10 UCOM Assy
Check AUX_MIC_SEL.
• When AUX is selected: “H”
• When MIC is selected: “L”
If it is not, check Q301. If the symptom persists,
soldering of the MAIN_UCOM (IC701) or the MAIN_
UCOM itself is defective.
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
10.17
WAVEFORMS
ADC reset cncel
Z
ADC I2S(1),(2),(3)
,
10.17 WAVEFORMS
Input MUTE cancel
$
10.17 WAVEFORMS
MIC,AUX No.
)
6 7 8
A
B
5
6 7 8
DDJ-T1
C
D
E
F
29

1
[7] Basic Operation Check of the MAIN_UCOM
Note: First, check if the voltage at each section is OK.
1
GRID Operation
Check
(No operation
with keys, VRs,
sliders, or LEDs)
UCOM Assy
Check the power to and the input/output
waveforms of the GRID IC (IC702)
If the waveform is not proper, check the GRID line
and the parts, such as resistors and capacitors.
If the output waveform is not proper, check item [2].
If nothing is wrong with the parts, the GRID IC
(IC702) or the MAIN_UCOM (IC701) may be
defective.
2
UCOM Assy
Assy
corresponding
to each key
Check the output waveform of the GRID IC
(IC702), with the FFC cable of the UCOM
Assy disconnected.
If the waveform returns to normal, the PCB Assy that
is connected with the UCOM Assy via the FFC cable
may be defective.
If the waveform does not return to normal, the GRID
IC (IC702) may be defective.
3
KEY Buffer
operation (key
input disabled)
UCOM Assy
Check the power supply to the KEY Buffer
ICs (IC1101 and 1102) and the input/output
waveforms when a key is pressed.
If the input waveform appears but the output
waveform does not when a corresponding key is
pressed, the KEY Buffer ICs (IC1101 and 1102) may
be defective.
If the input waveform does not appear when a
corresponding key is pressed, check item [4].
No operation
button is
effective.
4
UCOM Assy
Assy
corresponding
to each key
Check the connection of the FFC cable.
Check also the key input circuit of the PCB
Assy connected.
If the key input circuit of the board connected is
normal, the KEY Buffer ICs (IC1101 and 1102) may
be defective.
10.7 UCOM
ASSY (6/6)
No.
Cause/Symptom
Point to be checked
Item to be checked
How to distinguish a defective point and/or corrective action
Reference
10.17
WAVEFORMS
GRID control 1,
GRID control 2
10.17
WAVEFORMS
GRID control 1,
GRID control 2
10.17
WAVEFORMS
KEY operation 1,2
A
2 3 4
B
C
D
E
F
30
DDJ-T1
1
2 3 4

5
The MAIN_UCOM of this unit always monitors for power failure of the unit and will shut the unit off immediately after
an error is detected.
Content to be monitored
Any power failure generated inside the Power block on the UCOM_ASSY, such as voltage drop and voltage rise.
Power to be monitored: V+5_D, V+5_A, V+6, V-6, V+3R3_D, V+3R3_UCOM
Microcomputer Detection terminal and its terminal voltage
TP103 (F-DET, TP terminal) or IC701 (MAIN_UCOM) 23-pin FAULT_DET terminal
Normal: 3.3 V
Abnormal: 0 V
Timing of monitoring start
400 msec after the unit is turned ON
Timing upon judgment as a failure
50 msec after an error is detected
LED indication when an error is generated
All LEDs are unlit after an error is generated.
With other models, the Standby LED flashes to notify of a power failure. However, this does not apply to this model,
because a Standby LED is not provided with it.
Restoration method
After the unit shuts itself off because of an error, after completing diagnosis, disconnect the AC adapter and USB cable
and wait at least 1 minute before turning the unit back on.
Diagnostic procedure
1 Disconnect the AC adapter and USB cable.
2 Remove R147 from the UCOM Assy. Note: This step will disable power monitoring.
3 Reconnect the AC adapter and USB cable.
4 As the unit is turned on in a normal way, check each voltage in this state.
Note: Because power will be forcibly supplied even if any voltage is abnormal, if abnormal voltage continues, the defective
point may produce heat, which may be dangerous. Therefore, during diagnosis, be sure to disconnect the AC
adapter and USB cable several seconds after they are connected so that forcible powering will not continue.
5 If the voltage of any power IC is abnormal, the circuit that uses that power or the power IC itself may be defective.
6 Repair the defective part then check that the voltage of the repaired part becomes normal.
7 Return R147 to its original position on the UCOM Assy.
Note: This step will enable power monitoring.
6 7 8
5.3 VOLTAGE MONITORING
A
B
C
D
E
F
DDJ-T1
5
6 7 8
31

1
[Preparations]
Make preparations, as indicated below, on the PC before performing an operation check of the DDJ-T1.
1. Installation of TRAKTOR PIONEER DDJ-T1 EDITION (for Windows)
2. Installation of the Driver Software (for Windows)
3. Standard use setting of TRAKTOR
4. Import tracks to TRAKTOR.
Use TRAKTOR in Demo mode ("Run Demo").
A PC with the following specifications is required for operation of TRAKTOR:
Operation check of the volume controls, faders, and rotary encoders must be performed with the TRAKTOR software.
The TRAKTOR software is also required for checking the analog audio input/output.
For operation check using the TRAKTOR software, proceed as follows:
1. Installation of TRAKTOR PIONEER DDJ-T1 EDITION (for Windows)
The compressed installer file for "TRAKTOR PIONEER DDJ-T1 EDITION" will be posted on the Niis Web site:
Folder names: Traktor Installer Win.zip (for Windows) and Traktor Installer Mac.mpkg.zip (for Macintosh)
Download the necessary zip folder from Niis then unzip it.
[Installation Procedures]
Double-click on "Traktor Setup PC.exe" (unzipped file) to display the Setup screen.
Click on [Next] to proceed.
After the Setup screen is started, click on "Next" to proceed.
When the "License Agreement" screen is displayed, check the "I accept . . ." checkbox then click on "Next."
On other screens, basically proceed to the next screen by clicking on "Next" without doing anything.
When installation is finished, click on "Finish."
The three icons are displayed on the desktop.
This completes installation of TRAKTOR PIONEER DDJ-T1 EDITION.
2. Installation of the Driver Software (for Windows)
The driver software for this product is posted on the Pioneer Web site. Download it, as required.
This driver software is an Audio Stream Input Output (ASIO) driver for Windows.
The DDJ-T1 can play audio without this driver installed if you select "PIONEER DDJ-T1(DirectSound)" for "Audio Device" in
Audio Setup (mentioned later) for TRAKTOR. However, this driver provides an advantage in audio-data transmission delay
(latency time) over the standard Windows audio driver. In addition, when this driver is installed, the DDJ-1 Version Display
Utility is installed, as well. With this utility installed, you can confirm the versions of the driver software and DDJ-T1 firmware.
(Without this utility installed, the version of the DDJ-T1 firmware cannot be confirmed.) Therefore, be sure to install this driver
software.
[Installation Procedures]
Double-click on "Pioneer_DDJ_Driver_XXXXX.exe" (downloaded file).
Select “I agree” then click on “Install.”
After installation is finished, click on “Close.”
This completes driver software installation.
*For details on the installation method, refer to the Operating Instructions.
2 3 4
5.4 HOW TO CHECK OPERATIONS USING THE TRAKTOR SOFTWARE
A
B
C
D
E
F
32
DDJ-T1
1
2 3 4

5
[Checking Track Playback]
1. While holding the TREE button pressed, turn the rotary selector to select a folder.
2. Turn the rotary selector without holding the TREE or FAVORITES button pressed to select a track.
3. Press the LOAD button of the deck into which you wish to load the selected track, to load it.
4. Press the PLAY/PAUSE button to start playback of the track.
[Checking Analog Audio Output]
• Via MASTER OUT
1. Adjust the audio input level, by turning the GAIN control of each deck.
2. Adjust the audio output level with the channel fader of each deck.
3. Select the decks whose audio signals are to be output with the crossfader, as indicated below.
Leftmost position: Audio from Deck A or C is to be output.
Center position: Mixed audio of all decks is to be output.
Rightmost position: Audio from Deck B or D is to be output.
4. Turn the MAIN VOL control. Audio will be output from the MASTER 1 and 2 connectors.
• Via the headphone
1. Connect the headphones to the PHONES connector.
2. Press the headphones CUE button of the deck you wish to monitor.
3. Turn the HEADPHONES MIX control, as indicated below.
Turning counterclockwise: The volume from the deck whose headphones CUE button is pressed will be relatively increased.
Center position: The volume from the deck whose headphones CUE button is pressed and that via the MASTER OUT 1
and 2 connectors will become the same.
Turning clockwise: The volume via the MASTER OUT 1 and 2 connectors will be relatively increased.
4. Turn the HEADPHONES VOL control to output audio from the deck whose headphones CUE button is pressed.
[Checking Analog Audio Input]
1. Connect an external device or a microphone to the AUX IN or MIC connector, respectively.
2. With TRAKTOR, assign the audio of the external device to a desired deck.
3. Click on the b symbol beneath the assigned deck to display the pulldown menu then select "Audio Through."
4. On the TRAKTOR screen and via the audio output, check if the connected audio signal is input.
Note:
With the initial setting of TRAKTOR Pioneer DDJ-T1 EDITION, the audio signal from an external device connected via the
AUX IN or MIC connector is input to Deck D.
However, with the initial setting of Demo mode, which is used for servicing, it is assigned to Deck A.
4. Import tracks to TRAKTOR
Drag and drop music files or folders containing music files into “Track Collection” of the “TREE” area of TRAKTOR, using
Explorer or Finder.
[Connection Examples]
6 7 8
A
B
C
D
E
5
6 7 8
DDJ-T1
F
35

5
[1] Check of operator input and a display function.
When it spends a power supply while pushing a FUNCTION button and a IN (IN ADJUST) button of left deck simultaneously,
enters into this mode. (Please continue pushing until an opening display is completed.)
In this mode, the input of each buttons, JOGs, slide switches, needle pads are correct, and it can check that a display can
also be performed correctly.
In addition, display of a button is turned on only while pushing the button.
In addition, neither volume nor an encoder can be checked only by the controller.
Please check the display which connects with TRAKTOR and corresponds in the usual mode.
Part Operator Device LED Display
DECK A DECK A
DECK C DECK C
DECK B DECK B
DECK D DECK D
FX1/FX2 ADVANCED/CHAINED BUTTON ADVANCED→CHAINDE→OFF→ (Cyclic)
DRY/WET ON/OFF BUTTON DRY/WET
DRY/WET CONTROL ROTARY VOLUME *
SELECT/BACK 1 BUTTON EFFECT 1
SELECT/BACK 2 BUTTON EFFECT 2
SELECT/BACK 3 BUTTON EFFECT 3
EFFECT 1 ON/OFF BUTTON EFFECT 1
EFFECT 2 ON/OFF BUTTON EFFECT 2
EFFECT 3 ON/OFF BUTTON EFFECT 3
EFFECT 1 CONTROL ROTARY VOLUME *
EFFECT 2 CONTROL ROTARY VOLUME *
EFFECT 3 CONTROL ROTARY VOLUME *
DECK A/C FUNCTION BUTTON FUNCTION
DECK B/D NEEDLE SEARCH PAD JOG LED ROTATION
FILTER ON/OFF BUTTON FILTER
FILTER CONTROL ROTARY VOLUME *
IN BUTTON IN
OUT B
UTTON OUT
ACTIVEBUTTON ACTIVE
MOVE/CUE BUTTON MOVE→CUE→OFF→ (Cyclic)
MODE/DELETE BUTTON MODE/DELETE
HOT CUE 1/SIZE← BUTTON HOT CUE 1/SIZE←
HOT CUE 2/SIZE→ BUTTON HOT CUE 2/SIZE→
HOT CUE 3/BWD BUTTON HOT CUE 3/BWD
HOT CUE 4/FWD BUTTON HOT CUE 4/FWD
AUTO LOOP CONTROL ENCODER *
AUTO LOOP PUSH ENCODER IN
SHIFT BUTTON OUT
KEY LOCK BUTTON KEY LOCK
TEMPO RANGE BUTTON FILTER
CUE BUTTON CUE
PLAY/PAUSE BUTTON PLAY/PAUSE
TEMPO SLIDE VOLUME *
JOG ROTATION DIAL JOG LED ROTATION
JOG TOUCH DIAL JOG LED ALL ON
MIXER LOAD A BUTTON FX 1 A
LOAD B BUTTON FX 1 B
LOAD C BUTTON FX 1 C
LOAD D BUTTON FX 1 D
TREE BUTTON HEADPHONE CUE A
FAVORITES/REC BUTTON HEADPHONE CUE B
6 7 8
6.2 DETAILS ON SERVICE MODE
A
5
DDJ-T1
6 7 8
B
C
D
E
F
37

1
[3] Error display
When abnormalities are detected during the time of carrying out power supply ON, or operation, it displays by LED.
[4] Firmware update
Refer to the "8.3 UPDATING OF THE FIRMWARE."
Abnormalities LED/Display Note
1
Abnormalities of a power
supply
All LED put out the light.
When abnormalities are detected by the state of DC power supply and
USB bus power supply, it will be in this state. Opening display is not
performed, either, when abnormalities are detected at the time of starting.
2
Abnormalities in FLASH
ROM of MAIN microcomputer
Left deck/IN (IN ADJUST)
Lighting
When update goes wrong and FLASH-ROM is not written correctly,
it will be in this state. Even in this case, update can be performed
succeedingly. However, "3" is displayed while it can be communicating
neither with the case where USB cable is not connected, nor USB
controller, correctly also at this time.
3
Aabnormalities of USB
controller
Left deck/OUT (OUT ADJUST)
Blinks in a cycle of 0.5 seconds.
When the time when it cannot communicate with USB controller
correctly although USB cable is connected at the time of starting, and
controllers are abnormalities, it will be in this state.
4
Abnormalities of the
needle pad controller of
the left deck
Right deck/IN (IN ADJUST)
Blinks in a cycle of 0.5 seconds.
When the time when it cannot communicate with a needle pad
controller correctly, and controllers are abnormalities, it will be in this
state. However, this display is performed at the time of "[1] Check of
operator input and a display function." It will be used in usual use, with
a needle pad not operating.
5
Abnormalities of the
needle pad controller of
the right deck
Right deck/OUT (OUT ADJUST)
Blinks in a cycle of 0.5 seconds.
Device Name Function Part No. Ref No. Assy
MAIN UCOM
Main microcomputer,
All operating elements/LED control
DYW1801
PEG850A8-K
IC701 UCOM Assy
USB UCOM USB control, audio control TUSB3200A IC202 UCOM Assy
CDC Needle search control AD7147ACPZ500RL7
IC2001
IC2101
CDCB 1 Assy
CDCB 2 Assy
A
B
2 3 4
C
D
6.3 ABOUT THE DEVICE
E
F
40
1
DDJ-T1
2 3 4

5
Before repairing, be sure to check the version of the firmware, and if it is not the latest one, update to the latest version.
Perform the each item when the following parts are replaced.
• UCOM ASSY (MAIN UCOM: IC701)
• Confirmation of the version of the firmware
• Updating to the latest version of the firmware
• EEPROM on the UCOM ASSY: IC201
• Copying the program for the USB controller
• Updating to the latest version of the firmware
• Component parts of the JOG dial section • JOG dial rotation load adjustment
Confirmation of the firmware version can be performed on a PC connected with this product.
How to confirm differs depending on the type of OS used.
1. Confirmation of the Versions of the
DDJ-T1 Firmware (for Windows)
To confirm the versions of the driver software and DDJ-T1
firmware, with the DDJ-T1 connected with a PC, click on
“Start” then select “All Programs,” “Pioneer,” “DDJ,” then
“DDJ Version Display Utility.”
2. Confirmation of the Version of the DDJ-T1
Firmware (for Macintosh)
As the standard audio driver for the Macintosh OS is to be
used, neither driver software nor a version display utility for
Macintosh are provided.
For confirmation of the version of the DDJ-T1 firmware,
proceed as follows:
How to Confirm the Version of the DDJ-T1 Firmware on
Mac OS X
1. Select “Application” then “Utility,” then start “System
Profiler.”
2. Click on “USB” then “DDJ-T1.” The version of the DDJ-T1
firmware is displayed in the version field.
6 7 8
8. EACH SETTING AND ADJUSTMENT
8.1 NECESSARY ITEMS TO BE NOTED
8.2 CONFIRMATION OF THE VERSIONS OF THE FIRMWARE
A
B
C
D
E
5
DDJ-T1
6 7 8
F
49

5
6 7 8
(1) PACKING SECTION PARTS LIST
Mark No. Description Par t No.
> 1 AC Adapter DWR1491
> 2Power Plug (EU) See Contrast table (2)
> 3Power Plug (UK) See Contrast table (2)
> 4Power Plug (US) See Contrast table (2)
> 5Power Plug (AUS) See Contrast table (2)
No. Description Par t No.
Mark
15 Operating Instructions See Contrast table (2)
16 Operating Instructions See Contrast table (2)
NSP 17 Warranty Card See Contrast table (2)
e
NSP 1
8 License K
y Label AS DXA2242
19 Caution Card/ADP DRM1345
A
> 6Power Plug (KOR) See Contrast table (2)
> 7Power Plug (CHI) See Contrast table (2)
8 USB Cable DDE1140
9 TRAKTOR Pioneer DDJ-T1 DXX2665
EDITION software CD-ROM
10 Driver software CD-ROM DXX2666
11 Operating Instructions See Contrast table (2)
12 Operating Instructions See Contrast table (2)
13 Operating Instructions See Contrast table (2)
14 Operating Instructions See Contrast table (2)
20 Caution Card/CU See Contrast table (2)
21 Caution Card/PLG See Contrast table (2)
22 • • • • •
23 Recycle Label (M) See Contrast table (2)
NSP 24 Polyethylene Bag AHG7117
25 Vinyl Bag See Contrast table (2)
26 Packing Sheet RHC1023
27 Plastic Handle (PE) VEC2292
28 Spacer (PE) VEC2293
29 Accessory Pad DHA1875
30 Pad A DHA1871
31 Pad B DHA1872
32 Packing Case See Contrast table (2)
(2) CONTRAST TABLE
DDJ-T1/SVYXJ8, UXJCB, FLPXJ, KXJ5 and AXJ5 are constructed the same except for the following:
Mark No. Symbol and Description DDJ-T1/SVYXJ8 DDJ-T1/UXJCB DDJ-T1/FLPXJ DDJ-T1/KXJ5 DDJ-T1/AXJ5
> 2Power Plug (EU) DKX1048 Not used DKX1048 Not used Not used
> 3Power Plug (UK) DKX1049 Not used DKX1049 Not used Not used
> 4Power Plug (US) Not used DKX1047 DKX1047 Not used Not used
> 5Power Plug (AUS) Not used Not used DKX1050 Not used Not used
> 6Power Plug (KOR) Not used Not used DKX1051 DKX1051 Not used
B
C
D
> 7Power Plug (CHI) Not used Not used Not used Not used DKX1052
11 Operating Instructions (En/Fr/De) DRB1537 Not used Not used Not used Not used
N
12 Operating Instructions (It/Nl/Es/Ru) DRB1563 Not used Not used Not used
ot used
13 Operating Instructions (En) Not used DRB1536 Not used Not used Not used
14 Operating Instructions (En/Es/Zhtw)Not used Not used DRB1539 Not used Not used
15 Operating Instructions (Ko) Not used Not used Not used DRB1541 Not used
16 Operating Instructions (Zhcn/En) Not used Not used Not used Not used DRB1540
NSP 17 Warranty Card ARY7107 Not used Not used Not used Not used
20 Caution Card/CU Not used DRM1353 Not used Not used Not used
21 Caution Card/PLG Not used Not used DRM1346 Not used Not used
23 Recycle Label (M) Not used Not used Not used DRW2307 Not used
N
25 Vinyl Bag Not used Not used Z21-013 Not used
ot used
32 Packing Case DHG3055 DHG3056 DHG3057 DHG2987 DHG2985
DDJ-T1
5
6 7 8
E
F
55

5
6 7 8
(1) EXTERIOR SECION SECTION PARTS LIST
Mark No. Description Par t No.
1Dial Knob DAA1259
2 Rotary Knob L (Black) DAA1261
3 Rotary Knob S (Black) DAA1262
4Dial Knob S DAA1264
5 Rotary Knob L (Gray) DAA1267
6 Slider Knob 1DAC2684
7 Slider Knob 2DAC2685
8 Slide Sheet DAH2836
9Rubber Foot (H6) DEB1996
10 CDC Sheet DEC3354
A
11 Chassis See Contrast table (2)
12 Foot DNK5864
13 Slide Knob (Metal) DNK5876
14 Slider Knob Stopper DNK5888
15 Rubber Foot VEB1349
16 • • • • •
17 • • • • •
18 Screw PMB30P080FTB
19 Screw BBZ30P060FTC
20 Screw BPZ30P080FNI
(2) CONTRAST TABLE
DDJ-T1/SVYXJ8, UXJCB, FLPXJ, KXJ5 and AXJ5 are constructed the same except for the following:
Mark No. Symbol and Description DDJ-T1/SVYXJ8 DDJ-T1/UXJCB DDJ-T1/FLPXJ DDJ-T1/KXJ5 DDJ-T1/AXJ5
11 Chassis DNA1419 DNA1414 DNA1415 DNA1416 DNA1416
B
C
D
E
F
DDJ-T1
5
6 7 8
57

5
PCB LAYER SECTION PARTS LIST
Mark No. Description Par t No.
1 UCOM Assy DWX3209
2 CDCB 1 Assy DWX3210
3 CDCB 2 Assy DWX3224
4 CDJ1B Assy DWS1430
5 LEDB Assy DWS1434
6 CDJ2B Assy DWS1431
7 CHFD Assy DWX3212
8 CRFD Assy DWX3213
9 MICB Assy DWX3215
10 HPJK Assy DWX3216
6 7 8
No. Description Par t No.
Mark
46 • • • • •
47 • • • • •
48 Screw PMH20P040FTC
49 Screw IMZ30P040FTC
50 • • • • •
30P060FTC
51 Screw BB
Z
52 Screw BPZ30P080FNI
53 Screw BPZ30P100FTB
54 Screw (M3x5) DBA1340
55 Screw BBZ30P060FTB
A
11 DJMB Assy DWX3211
12 JACB Assy DWX3214
13 USBB Assy DWX3222
14 25P FFC DDD1543
15 19P FFC DDD1545
16 8P FFC DDD1547
17 15P FFC DDD1548
18 FFC/20P DDD1561
19 Crimp Connector DKP3894
20 Crimp Connector DKP3897
21 Crimp Connector DKP3900
22 Crimp Connector DKP3920
23 Crimp Connector DKP3921
24 Crimp Connector DKP3922
25 Crimp Connector DKP3923
26 Connector Assy PF03PP-C06
27 Clamper CNV3477
28 Cap/FDR DAC2771
29 Slide SW Packing (B) DEC2590
30 Phone Spacer DEC2914
56 Screw BPZ30P080FTB
B
C
D
31 FFC Guard 1 DEC3362
32 FFC Guard M DEC3364
33 • • • • •
34 Front Stay L DNH2959
35 Front Stay R DNH2960
36 Rear Stay L DNH2961
37 Rear Stay R DNH2962
38 VR Stay L DNH2963
39 VR Stay S DNH2964
40 CDC Stopper DNK5863
41 Cord Hook DNK5928
42 Cord Clamper (Steel) RNH-184
43 Binder ZCA-SKB90BK
44 Nut M12 DBN1018
45 Nut NKX2FTC
5
6 7 8
DDJ-T1
E
F
59

5
6 7 8
(1) BUTTON LAYER SECTION PARTS LIST
Mark No. Description Par t No.
1Button L (Opal) DAC2657
2Cue Button R DAC2658
3 Load Button A DAC2659
4 Load Button B DAC2660
5 Shift Button DAC2661
6Button S (Opal) DAC2662 *
7Button S (Black) DAC2663 *
8 FX Assign Button DAC2664
9 Deck Select Button A DAC2665
10 Deck Select Button B DAC2666
A
11 FX Select Button 1 DAC2667
12 FX Select Button 2 DAC2668
13 FX Select Button 3 DAC2669
14 Loop Button DAC2671
15 Deck Select Button C DAC2677
16 Deck Select Button D DAC2678
17 Filter Button DAC2680
18 Active Button DAC2681
19 Play Button DAC2682
20 Button S (Gray) DAC2683 *
21 Load Button C DAC2687
22 Load Button D DAC2688
23 Fader Packing DEC3355
24 Lens DNK5862
25 1..Control PNL Assy See Contrast table (2)
26 2..Control Panel DNK5859
27 2..Front Panel DNK5869
2..Rear Panel See Contrast table
28
*: N
ote that there are two types of button S, as some of them have
to be split into two when used.
B
C
(2)
D
(2) CONTRAST TABLE
DDJ-T1/SVYXJ8, UXJCB, FLPXJ, KXJ5 and AXJ5 are constructed the same except for the following:
Mark No. Symbol and Description DDJ-T1/SVYXJ8 DDJ-T1/UXJCB DDJ-T1/FLPXJ DDJ-T1/KXJ5 DDJ-T1/AXJ5
25 Control PNL Assy DXB2096 DXB2106 DXB2107 DXB2110 DXB2108
28 Rear Panel DNK5870 DNK5878 DNK5879 DNK5882DNK5880
DDJ-T1
5
6 7 8
E
F
61

5
1
JA2502 - pin 1 (V+USB5)
V: 5.0 V/div. H: 40 μS/div.
2
CN2501 - pin 13 (V+5_USB)
V: 5.0 V/div. H: 40 μS/div.
3
CN2501 - pin 4 (V+4R7_STB)
V: 5.0 V/div. H: 40 μS/div.
4
1
2
3
4
CN2501 - pin 5 (ADP_DET)
V: 2.0 V/div. H: 40 μS/div.
O
USBB ASSY
B
UCOM ASSY
Measuring equipment: Oscilloscope (Tektronix TDS3054)
Probe (Tektronix P6139A/P5050; Input Capacitance: 8 to 11.1 [pF], Input Impedance: 10 M[Ω])
The display voltage value of the oscilloscope is a reference value. The voltage value changes by the filter of the oscilloscope
and a difference of the measuring function and a probe.
Power bus power
Mode: POWER ON (BUS POWER)
4
JA2501 - pin 1 (V+ADP5)
V: 5.0 V/div. H: 100 μS/div.
2
CN2501 - pin 13 (V+5_USB)
V: 5.0 V/div. H: 100 μS/div.
3
CN2501 - pin 4 (V+4R7_STB)
V: 5.0 V/div. H: 100 μS/div.
5
4
2
3
5
CN2501 - pin 5 (ADP_DET)
V: 2.0 V/div. H: 100 μS/div.
AC adapter
Mode: POWER ON (AC ADAPTER)
3
CN2501 - pin 4 (V+4R7_STB)
V: 5.0 V/div. H: 100 mS/div.
6
CN2501 - pin 6 (P_SW1_ADP)
V: 5.0 V/div. H: 100 mS/div.
7
CN2501 - pin 7 (P_SW2_USB)
V: 2.0 V/div. H: 100 mS/div.
8
3
6
7
8
CN2501 - pin 1 (V+5D)
V: 5.0 V/div. H: 100 mS/div.
Power control
Mode: POWER ON (BUS POWER)
13
IC202 - pin 51 (XTALI)
V: 1.0 V/div. H: 20 mS/div.
13
USB UCOM X’tal
Mode: POWER ON
12
IC202 - pin 10 (USB_RST)
V: 2.0 V/div. H: 1 mS/div.
14
TP210/IC201 - pin 6 (EEP_SCL)
V: 2.0 V/div. H: 1 mS/div.
15
TP211/IC201 - pin 5 (EEP_SDA)
V: 2.0 V/div. H: 1 mS/div.
12
14
15
I2C USB UCOM EEPROM
Mode: POWER ON
3
CN2501 - pin 4 (V+4R7_STB)
V: 5.0 V/div. H: 100 mS/div.
6
CN2501 - pin 6 (P_SW1_ADP)
V: 5.0 V/div. H: 100 mS/div.
7
CN2501 - pin 7 (P_SW2_USB)
V: 2.0 V/div. H: 100 mS/div.
8
3
6
7
8
CN2501 - pin 1 (V+5D)
V: 5.0 V/div. H: 100 mS/div.
Power control
Mode: POWER ON (AC ADAPTER)
9
TP1049/CN1004 - pin 13 (V+5_USB)
V: 5.0 V/div. H: 100 mS/div.
10
TP101/IC104 - pin 5 (V+3R3_USB)
V: 2.0 V/div. H: 100 mS/div.
11
Q201 - pin 3 (USB_DET)
V: 2.0 V/div. H: 100 mS/div.
12
9
10
11
12
IC202 - pin 10 (USB_RST)
V: 2.0 V/div. H: 100 mS/div.
USB UCOM start up
Mode: POWER ON
NOTE: The following waveforms were measured at the point of the corresponding
balloon number in the schematic diagram.
6 7 8
10.17 WAVEFORMS
A
B
C
D
E
F
DDJ-T1
5
6 7 8
95

A
16
TP1043/CN1004 - pin 4 (V+4R7_STB)
V: 5.0 V/div. H: 4 mS/div.
17
TP102/IC105 - pin 5 (V+3R3_UCOM)
V: 5.0 V/div. H: 4 mS/div.
18
IC106 - pin 1 (MAIN_RST)
V: 5.0 V/div. H: 4 mS/div.
19
16
17
18
19
IC701 - pin 20 (XIN)
V: 5.0 V/div. H: 4 mS/div.
B
UCOM ASSY
MAIN UCOM start up
Mode: POWER ON
20
CN1004 - pin 1 (V+5_D)
V: 5.0 V/div. H: 20 mS/div.
21
CN501 - pin 2 (V+6)
V: 5.0 V/div. H: 20 mS/div.
22
CN501 - pin 3 (V-6)
V: 5.0 V/div. H: 20 mS/div.
23
20
21
22
23
TP104/IC103 - pin 5 (V+5_A)
V: 5.0 V/div. H: 20 mS/div.
AUDIO power supply
Mode: POWER ON
20
CN1004 - pin 1 (V+5_D)
V: 2.0 V/div. H: 40 mS/div.
24
TP106/IC102 - pin 5 (V+3R3_D)
V: 2.0 V/div. H: 40 mS/div.
20
24
DIGITAL power supply
Mode: POWER ON
17
TP102/IC105 - pin 5 (V+3R3_UCOM)
V: 5.0 V/div. H: 40 mS/div.
24
TP106/IC102 - pin 5 (V+3R3_D)
V: 5.0 V/div. H: 40 mS/div.
20
CN1004 - pin 1 (V+5_D)
V: 5.0 V/div. H: 40 mS/div.
25
17
24
20
25
TP103/IC701 - pin 23 (FAULT_DET)
V: 2.0 V/div. H: 40 mS/div.
Abnormal voltage detection
Mode: POWER ON
21
CN501 - pin 2 (V+6)
V: 5.0 V/div. H: 40 mS/div.
23
TP104/IC103 - pin 5 (V+5_A)
V: 2.0 V/div. H: 40 mS/div.
25
TP103/IC701 - pin 23 (FAULT_DET)
V: 2.0 V/div. H: 40 mS/div.
21
23
25
Abnormal voltage detection
Mode: POWER ON, TRIGGER: CH1, 2 V
26
IC202 - pin 44 (MCLK)
V: 2.0 V/div. H: 20 μS/div.
27
IC202 - pin 34 (BCLK)
V: 5.0 V/div. H: 20 μS/div.
28
IC202 - pin 35 (LRCK)
V: 5.0 V/div. H: 20 μS/div.
26
27
28
USB UCOM I2S
Mode: IDLING
29
IC202 - pin 7 (USB_DP)
V: 5.0 V/div. H: 400 μS/div.
30
IC202 - pin 8 (USB_DN)
V: 5.0 V/div. H: 400 μS/div.
29
30
USB DP/DN (1)
Mode: IDLING
29
IC202 - pin 7 (USB_DP)
V: 5.0 V/div. H: 400 nS/div.
30
IC202 - pin 8 (USB_DN)
V: 5.0 V/div. H: 400 nS/div.
29
30
USB DP/DN (2)
Mode: IDLING
31
TP1010/CN1001 - pin 16 (GRID0)
V: 5.0 V/div. H: 200 μS/div.
32
TP1008/CN1001 - pin 18 (GRID1)
V: 5.0 V/div. H: 200 μS/div.
33
TP1005/CN1001 - pin 22 (GRID2)
V: 5.0 V/div. H: 200 μS/div.
34
31
32
33
34
TP1003/CN1001 - pin 24 (GRID3)
V: 5.0 V/div. H: 200 μS/div.
GRID control 1
Mode: IDLING
1
2 3 4
B
C
D
E
F
96
DDJ-T1
1
2 3 4

35
TP1009/CN1001 - pin 17 (GRID4)
V: 5.0 V/div. H: 200 μS/div.
36
TP1007/CN1001 - pin 19 (GRID5)
V: 5.0 V/div. H: 200 μS/div.
37
TP1006/CN1001 - pin 21 (GRID6)
V: 5.0 V/div. H: 200 μS/div.
38
35
36
37
38
TP1004/CN1001 - pin 23 (GRID7)
V: 5.0 V/div. H: 200 μS/div.
46
TP954/CN905 - pin 13 (V+3R3_AD)
V: 2.0 V/div. H: 2.0 mS/div.
48
TP1018/CN1001 - pin 2 (AD_SW_A)
V: 2.0 V/div. H: 2.0 mS/div.
49
TP1019/CN1001 - pin 1 (AD_SW_B)
V: 2.0 V/div. H: 2.0 mS/div.
50
46
48
49
50
TP1024/CN1002 - pin 5 (AD_0)
V: 2.0 V/div. H: 2.0 mS/div.
TP954/CN905 - pin 13 (V+3R3_AD)
V: 2.0 V/div. H: 100 mS/div.
48
TP1018/CN1001 - pin 2 (AD_SW_A)
V: 2.0 V/div. H: 100 mS/div.
49
TP1019/CN1001 - pin 1 (AD_SW_B)
V: 2.0 V/div. H: 100 mS/div.
50
46
48
49
50
TP1024/CN1002 - pin 5 (AD_0)
V: 2.0 V/div. H: 100 mS/div.
B
UCOM ASSY
GRID control 2
Mode: IDLING
39
CN902 - pin 1 (CDC_INT1)
V: 2.0 V/div. H: 2.0 mS/div.
40
CN902 - pin 2 (CDC_CS1)
V: 2.0 V/div. H: 2.0 mS/div.
41
CN902 - pin 4 (CDC_SCLK)
V: 2.0 V/div. H: 2.0 mS/div.
39
40
41
41
CN902 - pin 4 (CDC_SCLK)
V: 2.0 V/div. H: 4.0 μS/div.
42
CN902 - pin 6 (CDC_DSI)
V: 2.0 V/div. H: 4.0 μS/div.
43
CN902 - pin 7 (CDC_DSO)
V: 2.0 V/div. H: 4.0 μS/div.
41
42
43
CDC IC control 1
Mode: IDLING
CDC IC control 2
Mode: IDLING
37
TP1006/CN1001 - pin 21 (GRID6)
V: 2.0 V/div. H: 200 μS/div.
44
TP988/CN908 - pin 11 (KEY_IN4)
V: 2.0 V/div. H: 200 μS/div.
45
IC1101 - pin 14 (KEY4)
V: 2.0 V/div. H: 200 μS/div.
37
44
45
KEY operation 1 (PLAYER1 PLAY)
Mode: PLAY KEY
32 46
TP1008/CN1001 - pin 18 (GRID1)
V: 2.0 V/div. H: 400 μS/div.
44
TP988/CN906 - pin 11 (KEY_IN4)
V: 2.0 V/div. H: 400 μS/div.
45
IC1101 - pin 14 (KEY4)
V: 2.0 V/div. H: 400 μS/div.
32
44
45
KEY operation 2 (PLAYER1 SHIFT)
Mode: SHIFT KEY
46
TP954/CN905 - pin 13 (V+3R3_AD)
V: 2.0 V/div. H: 200 mS/div.
47
TP959/CN905 - pin 21 (AD_DRYWET1)
V: 1.0 V/div. H: 200 mS/div.
46
47
Volume operation 1
(PLAYER1 DRY/WET)
Mode: PLAYER1 DRY/WET VOL operation
Volume operation 2 (MIXER GAIN A)(1)
Mode: MIXER GAIN A VOL operation
Volume operation 2 (MIXER GAIN A)(2)
Mode: MIXER GAIN A VOL operation
46
TP954/CN905 - pin 13 (V+3R3_AD)
V: 2.0 V/div. H: 40 mS/div.
51
TP1031/CN1003 - pin 14 (AD_FADER_A)
V: 2.0 V/div. H: 40 mS/div.
46
51
CH FADER operation (CH A)
Mode: MIXER CH A FADER operation
5
6 7 8
A
B
C
D
E
F
DDJ-T1
5
6 7 8
97

A
46
TP954/CN905 - pin 13 (V+3R3_AD)
V: 2.0 V/div. H: 40 mS/div.
52
TP1035/CN1003 - pin 9 (AD_CROSSF)
V: 2.0 V/div. H: 40 mS/div.
46
52
63
IC701 - pin 70 (A_MUTE)
V: 2.0 V/div. H: 2.0 S/div.
3
CN2501 - pin 4 (V+4R7_STB)
V: 2.0 V/div. H: 2.0 S/div.
64
TP505/CN501 - pin 1 (MUTE)
V: 2.0 V/div. H: 2.0 S/div.
63
3
64
IC701 - pin 76 (AIN_MUTE)
V: 2.0 V/div. H: 40 mS/div.
23
TP104/CN103 - pin 5 (V+5_A)
V: 2.0 V/div. H: 40 mS/div.
66
R523/R528 (ADC_MUTE)
V: 2.0 V/div. H: 40 mS/div.
65
23
66
B
UCOM ASSY
CROSS FADER operation
Mode: MIXER CROSS FADER operation
46
TP954/CN905 - pin 13 (V+3R3_AD)
V: 2.0 V/div. H: 40 mS/div.
53
TP964/CN905 - pin 14 (AD_PITCH2_1)
V: 1.0 V/div. H: 40 mS/div.
54
TP965/CN905 - pin 12 (AD_PITCH2_2)
V: 2.0 V/div. H: 40 mS/div.
46
53
54
55
TP957/CN905 - pin 25 (L_ENC1_1)
V: 2.0 V/div. H: 20 mS/div.
56
TP958/CN905 - pin 24 (L_ENC1_2)
V: 2.0 V/div. H: 20 mS/div.
55
56
PITCH FADER operation (PLAYER1)
Mode: PLAYER1 PITCH FADER operation
ROTARY ENCODER(PLAYER) operation
Mode: PLAYER1 AUTO LOOP operation
57
TP106/IC102 - pin 5 (V+3R3_D)
V: 2.0 V/div. H: 40 mS/div.
58
TP973/CN906 - pin 1 (JOG_TCH1)
V: 1.0 V/div. H: 40 mS/div.
57
58
JOG rotation operation
Mode: JOG TOUCH & Release operation
23 65
TP104/IC103 - pin 5 (V+5_A)
V: 5.0 V/div. H: 100 μS/div.
60
IC303 - pin 7 (VD)
V: 5.0 V/div. H: 100 μS/div.
26
IC202 - pin 44 (MCLK)
V: 2.0 V/div. H: 100 μS/div.
61
IC701 - pin 98 (ADC_RST)
V: 5.0 V/div. H: 100 μS/div.
23
60
26
61
ADC reset cancel
Mode: POWER ON
23
TP104/IC103 - pin 5 (V+5_A)
V: 5.0 V/div. H: 40 nS/div.
26
IC202 - pin 44 (MCLK)
V: 5.0 V/div. H: 40 nS/div.
62
IC701 - pin 99 (DAC_RST)
V: 2.0 V/div. H: 40 nS/div.
23
26
62
DAC reset cancel
Mode: POWER ON
Output MUTE cancel
Mode: POWER ON
Input MUTE cancel
Mode: POWER ON
67
TP317/CN303 - pin 4 (MIC_IN)
V: 1.0 V/div. H: 1.0 mS/div.
68
IC303 - pin 2 (AINL)
V: 5.0 V/div. H: 1.0 mS/div.
69
68
69
TP316/CN303 - pin 6 (MIC_AUX_DET)
V: 2.0 V/div. H: 1.0 mS/div.
70
IC701 - pin 71 (AUX_MIC_SEL)
V: 2.0 V/div. H: 1.0 mS/div.
67
70
MIC
Mode:
AUX 1 kHz input, at SW MIC selection
1
2 3 4
B
C
D
E
F
98
DDJ-T1
1
2 3 4

78
TP306/CN301 - pin 3 (HP_L)
V: 2.0 V/div. H: 400 μS/div.
79
TP305/CN301 - pin 5 (HP_R)
V: 2.0 V/div. H: 400 μS/div.
78
79
IC304 - pin 6 (DAC_CS1)
V: 2.0 V/div. H: 10 μS/div.
81
IC304 - pin 7 (DAC_CCLK)
V: 2.0 V/div. H: 10 μS/div.
82
IC304 - pin 8 (DAC_CDTI)
V: 2.0 V/div. H: 10 μS/div.
80
81
82
B
UCOM ASSY
A
JACB ASSY
AUX
Mode:
AUX 1 kHz input, at SW AUX selection
68
IC303 - pin 2 (AINL)
V: 2.0 V/div. H: 1.0 μS/div.
27
IC202 - pin 34 (BCLK)
V: 2.0 V/div. H: 1.0 μS/div.
73
TP302/IC202 - pin 39 (MIC_AUX_DATA)
V: 2.0 V/div. H: 1.0 μS/div.
68
27
73
IC303 - pin 2 (AINL)
V: 2.0 V/div. H: 400 μS/div.
27
IC202 - pin 34 (BCLK)
V: 2.0 V/div. H: 400 μS/div.
73
TP302/IC202 - pin 39 (MIC_AUX_DATA)
V: 2.0 V/div. H: 400 μS/div.
68
27
73
68
ADC I2S (1)
Mode:
AUX 1 kHz input, at SW AUX selection
ADC I2S (2)
Mode:
AUX 1 kHz input, at SW AUX selection
74
IC506 - pin 11 (AOUTL)
V: 2.0 V/div. H: 1.0 μS/div.
27
27
IC202 - pin 34 (BCLK)
V: 2.0 V/div. H: 1.0 μS/div.
75
IC202 - pin 36 (MASTER_DATA)
V: 2.0 V/div. H: 1.0 μS/div.
74
75
74
IC506 - pin 11 (AOUTL)
V: 2.0 V/div. H: 400 μS/div.
27
27
IC202 - pin 34 (BCLK)
V: 2.0 V/div. H: 400 μS/div.
75
IC202 - pin 36 (MASTER_DATA)
V: 2.0 V/div. H: 400 μS/div.
74
75
DAC I2S (1)
Mode: 1 kHz playback, at MASTER output
80
DAC I2S (2)
Mode: 1 kHz playback, at MASTER output
76
TP503/CN501 - pin 5 (MASTER_L)
V: 2.0 V/div. H: 400 μS/div.
77
TP508/CN501 - pin 9 (MASTER_R)
V: 2.0 V/div. H: 400 μS/div.
76
77
MASTER OUT
Mode: 1 kHz playback, at MASTER output
HEADPHONE
Mode: 1 kHz playback, at HEADPHONE output
DAC control
Mode: POWER ON
83
TP503/CN501 - pin 5 (MASTER_L)
V: 5.0 V/div. H: 400 μS/div.
84
JA4402 - pin 3 (MASTER1_L+)
V: 5.0 V/div. H: 400 μS/div.
85
84
85
JA4402 - pin 2 (MASTER1_L-)
V: 5.0 V/div. H: 400 μS/div.
83
71
TP311/CN302 - pin 4 (AUX_R_IN)
V: 500 mV/div. H: 1.0 mS/div.
72
IC303 - pin 1 (AINR)
V: 5.0 V/div. H: 1.0 mS/div.
69
72
69
TP316/CN303 - pin 6 (MIC_AUX_DET)
V: 2.0 V/div. H: 1.0 mS/div.
70
IC701 - pin 71 (AUX_MIC_SEL)
V: 2.0 V/div. H: 1.0 mS/div.
71
70
MASTER OUT1
Mode: 1 kHz playback, at MASTER output
5
6 7 8
A
B
C
D
E
F
DDJ-T1
5
6 7 8
99