31
DDJ-RZX
5
6
7
8
5
6
7
8
A
B
C
D
E
F
Audio-Related Problems
[Prior Confirmation]
- Check that the displays and operations are normal.
Check that the displays and operating elements function properly, referring to "6.1 SERVICE MODE."
If there is any problem, repair the defective part. (See the flowcharts “Display-Related Problems” and “Operation-Related Problems.” )
No
Replace the DAC (IC3701) if there is no defect
by confirming the defective area of DAC and
peripheral circuits.
Input an audio signal to any of the input
connectors. Or have an audio signal output by
performing OSC SAMPLER [SINE], etc.
Remove the “LCD Assy and the rest
(DNF1983)” .
Remove the “LCD Assy and the rest
(DNF1983)” .
No
No
Replace the abnormal device by confirming
the defective area of Q4058, Q4059 and
peripheral circuits of the MUTE DRIVE circuit.
The device around the comparator (IC9007)
and peripheral circuits are defective.
Replace the comparator if there is no
defect by confirming the peripheral circuits.
Yes
Is the signal not output both from the
MASTER1 and MASTER2?
No
Yes
Yes
Yes
Replace the MUTE transistor in JACB Assy
if there is no defect by confirming the defective
area of MUTE transistor and peripheral circuits.
Replace the defective device by confirming the
area where the signal is not continuous inside
the JACB Assy.
No
Is the MASTER_MUTE signal
HI (3.3 V)?
Is the MAS_VR_MUTE signal
HI (3.3 V)?
Yes
Is the audio signal input to the
output section of the MAIN Assy?
“ ”
Is the audio signal input to the
output section of the MAIN Assy?
“ ”
7-1
7-2
No audio signals are output from the
MASTER 1/ MASTER 2 connectors.
Confirmation the MASTER1/MASTER2
Ch 1: IC3701_ pin 36 (MDA)
Ch 2: IC3701_ pin 35 (MDAC_OUT_L-)
V: 500 mV/div. H: 500 us/div.
Ch 1
Ch 2
1-6
MASTER OUT
Ch 1: CN3701_ pin 29 (M)
Ch 2: CN3701_ pin 31 (MASTER_L-)
V: 500 mV/div. H: 500 us/div.
Ch 1
Ch 2
MASTER OUT
1-7
Ch 1: R6229 (MASTER1_L_HOT)
Ch 2: R6232 (MASTER1_L_COLD)
V: 500 mV/div. H: 500 us/div.
Ch 1
Ch 2
MASTER OUT1
Ch 1: C6409
V: 500 mV/div. H: 500 us/div.
Ch 1
MASTER OUT2
7-1
7-2
1-6
1-7
