34
DDJ-RZX
1
2
3
4
A
B
C
D
E
F
1
2
3
4
Input an audio signal to the MIC connectors
in question.
No
MAIN Assy is defective.
Confirm the spot where the audio signal is
not continuous.
Replace the OP amplifier if there is no defect
by confirming the peripheral circuits of the OP
amplifier.
MIC1 line is NG : Replace IC4601
MIC2 line is NG : Replace IC4602
No
MCJK Assy is defective.
Confirm the spot where the audio signal is
not continuous.
Replace the OP amplifier if there is no defect
by confirming the peripheral circuits of the OP
amplifier.
MIC1 line is NG : Replace IC8003
MIC2 line is NG : Replace IC8002
Replace the ADC (IC4603) if there is no defect
by confirming the ADC and peripheral circuits.
Yes
Is the signal input to the
ADC (IC4603)?
” ”
Yes
Is the signal input to the
CN4601 10 PIN (MIC1),
6 PIN (MIC2) section of the MAIN Assy?
“ ”
No audio signals from the MIC connectors are
available.
Confirmation the MIC input
Remove the “LCD Assy and the rest
(DNF1983)” .
Replace the ADC if there is no defect by
confirming the ADC and peripheral circuits.
CH1 : IC4103
CH2 : IC4205
CH3 : IC4403
CH4 : IC4405
Yes
No
Replace the OP amplifier if there is no defect
by confirming the OP amplifier and peripheral
circuits.
CH1 : IC4101, IC4102
CH2 : IC4301, IC4302
CH3 : IC4202, IC4203, IC4201
CH4 : IC4402, IC4403, IC4401
No
Replace the transistor if there is no defect by
confirming the peripheral circuits of the
switching transistor.
CH3 : Q4205
CH4 : Q4405
Is the audio signal input to the
input section of the MAIN Assy?
“ ”
1-11
1-10
1-12
No
Yes
Is the signal switched by comforming
the swtching signal of SW OP amplifier.
” ”
Ch 1: IC4202_ pin 1
V: 5 V/div. H: 500 us/div.
Ch 1
SW_AM SW SIGNAL
(at LINE to PHONO)
1-13
Ch 1: IC4201_ pin 1
V: 1 V/div. H: 500 us/div.
Ch 1
CH3_L (PHONO)
Ch 1: IC4202_ pin 5
V: 1 V/div. H: 500 us/div.
Ch 1
CH3_L
1-10
1-11
Ch 1: C4246
V: 1 V/div. H: 500 us/div.
Ch 1
CH3_L
1-12
1-13
1-16
7-4
1-17