AlphaTheta DJM-V10 - Page 34

34
DJM-V10
1
2 3 4
A
B
C
D
E
F
1
2 3 4
1 Output
Confirmation
PHONES A
PHONES B
Confirm PHONES that do not output signals. ! If both connectors do not output, go to step 2.
! If only PHONES A not output, go to step 3.
! If only PHONES B not output, go to step 8.
3 Parts defect MAIN Assy
DAC_xRST
IC2502 5 pin
[Confirmation of the RESET input signal to DAC]
Confirm that DAC_RESET signal is HI.
! If the signal is HI, go to step 4.
! If LOW, the DAC_xRST circuit may have a
soldering defect. Check for the status of
soldering and replace it.
[4-3] No signal is output from the PHONES (PHONES A/PHONES B)
Step Cause Diagnostics Point Item to be Checked Corrective Action Reference
—
—
2 Parts defect MAIN Assy
IC2501
1 pin, 2 pin, 3 pin, 4 pin
IC2502
1 pin, 2 pin, 3 pin, 4 pin
[Confirmation of the digital input to DAC]
Confirm the audio signal and CLK (except
for fixed of High or Low) at the diagnostics
circuit.
! If no audio signal is input, MAIN CPU/DSP
(IC1101) or AUDIO_CLK (IC2002) may be
defective. Replace MAIN Assy.
—
4 Parts defect MAIN Assy
IC2502
9 pin, 10 pin, 11 pin,12 pin
[Confirmation of the analog output from DAC]
Confirm the audio signal (sine wave) at the
diagnostics circuit.
! If no audio signal is input, IC2502 and the
circuit around it may be defective. Check for
the status of soldering and replace it.
! If not, go to step 5.
—
5 Parts defect MAIN Assy
IC2505 1 pin, 7 pin
(HP_A_L/HP_A_R)
[Confirmation of the analog output from
PHONES A]
Confirm the audio signal (sine wave) at the
diagnostics circuit.
! If no audio signal is input, an analog circuit
before this part may be defective.
Check for the status of soldering of the
following places and replace it.
- IC2505
- The circuit around it
! If not, go to step 6.
—
6 Parts defect HPPW Assy
IC6352 1 pin, 7 pin
[Confirmation of the analog output from
PHONES A]
Confirm the audio signal (sine wave) at the
diagnostics circuit.
! If no audio signal is input, an analog circuit
before this part may be defective.
Check for the status of soldering of the
following places and replace it.
- IC6352
- The circuit around it
! If not, go to step 7.
—
7 Parts defect
/
Connection defect
HPPW Assy
CN6353 5 pin
(HP_A_LOUT)
CN6353 7 pin
(HP_A_ROUT)
[Confirmation of the analog output from
PHONES A]
Confirm the audio signal (sine wave) at the
diagnostics circuit.
! If no audio signal is input, RELAY circuit may
be defective. Check for the status of soldering
of the following places and replace it.
- RY6352
- The circuit around it
! If not, the 7 pin wire of HPJK have a
connection defect. Replace it.
—
8 Parts defect MAIN Assy
DAC_xRST
IC2501 5 pin
[Confirmation of the RESET input signal to DAC]
Confirm that DAC_RESET signal is HI.
! If the signal is HI, go to step 4.
! If LOW, the DAC_xRST circuit may have a
short circuit. Check for the status of soldering
and replace it.
—
9 Parts defect MAIN Assy
IC2501
9 pin, 10 pin, 11 pin,12 pin
[Confirmation of the analog output from DAC]
Confirm the audio signal (sine wave) at the
diagnostics circuit.
! If no audio signal is input, IC2501 and the
circuit around it may be defective. Check for
the status of soldering and replace it.
! If not, go to step 10.
—
10 Parts defect MAIN Assy
IC2504 1 pin, 7 pin
(HP_B_L/HP_B_R)
[Confirmation of the analog output from
PHONES B]
Confirm the audio signal (sine wave) at the
diagnostics circuit.
! If no audio signal is input, an analog circuit
before this part may be defective.
Check for the status of soldering of the
following places and replace it.
- IC2504
- The circuit around it
! If not, go to step 11.
—
11 Parts defect HPPW Assy
IC6351 1 pin, 7 pin
[Confirmation of the analog output from
PHONES B]
Confirm the audio signal (sine wave) at the
diagnostics circuit.
! If no audio signal is input, an analog circuit
before this part may be defective.
Check for the status of soldering of the
following places and replace it.
- IC6351
- The circuit around it
! If not, go to step 12.
—
12 Parts defect
/
Connection defect
HPPW Assy
CN6352 1 pin
(HP_B_LOUT)
CN6352 3 pin
(HP_B_ROUT)
[Confirmation of the analog output from
PHONES B]
Confirm the audio signal (sine wave) at the
diagnostics circuit.
! If no audio signal is input, RELAY circuit may
be defective. Check for the status of soldering
of the following places and replace it.
- RY6351
- The circuit around it
! If not, the 3 pin wire of HPJK have a
connection defect. Replace it.
—
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