21
CDJ-3000
5
6
7
8
5
6
7
8
A
B
C
D
E
F
10.45 WAVEFORMS
5
10.45 WAVEFORMS
5
No.
Cause
Diagnostics Point
Item to be Confirmed
Corrective Action
Reference
1
Mute circuit have
defect
AUDB Assy
Confirm that the voltage of the pin 6, 19
(L_MUTE_L, L_MUTE_R) of CN5002 is
normal when the sound is playing.
+
The voltage is -12 V during playing
sound, +11 V during muting.
[5] Sound output
[5-1] There is no sound from the analog output jack
If not normal, confirm Q1351, Q1352, Q1353,
Q1354, Q1355, Q1356, Q1357, Q1359 and the
peripheral circuit of these parts, and repair the
defective soldering and replace parts if found.
—
—
No.
Cause
Diagnostics Point
Item to be Confirmed
Corrective Action
Reference
1
DIT power
supply circuit
have defect
AUDB Assy
Confirm that the voltage of V+3R3DAC_D
and V+5SPDIF is normal.
+
The voltage is designed approximately as
the circuit name. (e.g. V+3R3*
d
3.3 V)
[5-2] There is no sound from the digital output jack
If not confirmed, confirm the associated power
supply ICs and their peripheral circuit, and repair
the defective soldering and replace parts if found.
—
2
Reset circuit
have defect
AUDB Assy
Confirm that pin 5 (DACDIT_xRST) of IC5301
(DIT) is H.
If not confirmed, confirm DACDIT_xRST circuit
from MAIN Assy and repair the defective soldering
and replace parts if found.
—
3
Master CLK has
defect
AUDB Assy
Confirm that the waveform of pin 1
(MCLK_DIT) of IC5301 (DIT) is normal.
+
The waveform is a square wave of 3.3 V
amplitude at 22.5792 MHz or 24.576 MHz.
If not confirmed, confirm the associated peripheral
circuit, and repair the defective soldering and
replace parts if found.
—
4
I2S circuit from
MAIN Assy have
defect
AUDB Assy
Confirm that the waveform of pin 2, 3, 4 of
(DAC_BCK, DAC_DATA, DAC_LRCK) IC5301
(DIT) is normal.
+
The same waveform as in
"10.45 WAVEFORMS
5
" is displayed.
If not confirmed, confirm I2S circuit from MAIN Assy
and repair the defective soldering and replace parts
if found.
2
Audio power
supply circuit
have defect
AUDB Assy
Confirm that the voltage of V+AUDIO and
V-AUDIO are normal.
+
V+AUDIO is designed at 9 V and V-AUDIO
is designed at -9 V.
If not confirmed, confirm IC5001, IC5002, IC5003
and the peripheral circuit of these parts, and
repair the defective soldering and replace parts
if found.
—
3
DAC power
supply circuit
have defect
AUDB Assy
Confirm that the voltage of each power
supply in IC5401 (DAC) is normal.
+
The voltage is designed approximately as
the circuit name. (e.g. V+3R3*
d
3.3 V)
If not confirmed, confirm the associated power
supply ICs and their peripheral circuit, and repair
the defective soldering and replace parts if found.
—
4
Reset circuit
have defect
AUDB Assy
Confirm that pin 2 (DACDIT_xRST) of IC5401
(DAC) is H.
If not confirmed, confirm DACDIT_xRST circuit
from MAIN Assy and repair the defective soldering
and replace parts if found.
—
5
Master CLK has
defect
AUDB Assy
Confirm that the waveform of pin 46
(MCLK_DAC) of IC5401 (DAC) is normal.
+
The waveform is a square wave of 3.3 V
amplitude at 22.5792 MHz or 24.576 MHz.
If not confirmed, confirm the associated peripheral
circuit, and repair the defective soldering and
replace parts if found.
—
6
I2S circuit from
MAIN Assy have
defect
AUDB Assy
Confirm that the waveform of pin 3, 4, 5
(DAC_BCK, DAC_DATA, DAC_LRCK) of
IC5401 (DAC) is normal.
If not confirmed, confirm I2S circuit from MAIN Assy
and repair the defective soldering and replace parts
if found.
1
Jog outer
assembly is
incorrect
Reassemble Damper to the correct position.
[4-11] The switching of the Jog touch from ON to OFF is slow
No.
Cause
Diagnostics Point
Item to be Confirmed
Corrective Action
Reference
Confirm that Damper (DEB2083) is properly
assembled.
JOG section
—
7
DAC has defect
Replace IC5401 (DAC).
The problem has not improved until the above.
AUDB Assy
—
5
DIT has defect
Replace IC5301 (DIT).
The problem has not improved until the above.
AUDB Assy
—
2
Jog outer
assembly have
defect
Replace the Jog dial (DNK6778).
Confirm whether Jog dial (DNK6778) and
Damper (DEB2083) do not touch it.
JOG section
