Audio Trouble - PIONEER DJ TSP-16 Service Manual

5
Touch strip does not work
Is V+3R3D that is supplied
to the sensor IC normal?
[Observation point CN8003-9pin
or CN7700-1pin]
Yes
Does CDC_INT become
the LOW level when touched?

[Observation point etc.]
Yes
Failure in the sensor IC (IC2000)
Touch panel does not work / misalignment occurs
Is the symptom a positional
misalignment?
Yes
Is there a failure in the FFC?
Yes
Replace the FFC

Audio Trouble

[Prior Confirmation]
(1) Confirmation of the internal wiring materials
Confirm that the wiring materials of the relevant parts are inserted properly. Also, confirm that there is no disconnection in the wiring materials.
Inset the wiring materials properly if they are not. Or, replace the wiring materials if they are disconnected. (See overall wiring diagram)
(2) Confirmation of the power supply
Confirm that the voltage of the power supply that is used in the part to be diagnosed is not abnormal.
If it is abnormal, identify the power generation source based on the power supply map and make the necessary repairs.
(3) Confirmation of the reset signal
Confirm that the reset signal of the IC that is used in the part to be diagnosed is Hi (+3.3V/Reset Released).
If it is abnormal, identify the reset signal generation source based on the circuit diagram and make the necessary repairs.
(4) Confirm that there is no problem in the display/ operation systems
Confirm that there is no problem in the displays/ operations in the test mode.
If a problem is found, make the necessary repairs on the target part. (See Display Trouble and Operation Trouble flow charts)
No sound comes out when an input is supplied to the INPUT terminal
Activate it in the normal mode and supply the audio signal to the INPUT terminal
Adjust the INPUT LEVEL knob to the appropriate position
Set the TRACK TYPE of least one track in the THRU
Adjust the TRACK VOLUME of track that is set in the THRU to the appropriate value
A
5
6
No
Is iMX_CDC_Pcon normal?
[Observation point ]
Yes
Failure in the sensor IC (IC7700)
or failure in the transistor (Q8043)
No
Failure in the operation processing
microcomputer (IC2000) or failure in the
buffer IC (IC7701, IC8001, IC8002)
No Failure in the touch panel circuit(Q8057 periphery)
Failure in the touch panel
No
Failure in the shunt circuit(Q8061,Q8062)
Failure in the touch panel
TSP-16
6
7
No Failure in the operation processing
microcomputer (IC2000)
or failure in the sensor IC (IC7700)
7
8
A
B
C
D
E
F
19
8