Cambridge Audio Azur 840C CD Player
AP19129/5
D
A
C
T
est Signals (Main Signal P
aths Left Channel)
Test Point
Schematic Ref
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P
Approx -0.45V dc
voltmeter
1kHz sine wave 2V p-p
‘scope
0.02% THD+N (22K BW)
THD meter
Voltage/Analogue
Approx -0.45V dc
voltmeter
THD meter
1kHz sine wave 2V p-p
scope
0.02% THD+N (22K BW)
THD meter
Voltage/Analogue
Less than 5mV dc
Voltmeter’scope
THD meter
1kHz sine wave 6.3V p-p 2.2Vrms
scope
approx 0.001% THD+N (22K
BW
)
THD meter
(0.0006% bal THD +N (22K BW)
a/c
p
ins 4 & 5 U39
)
THD meter
Voltage/Analogue
Less than 5mV dc
voltmeter
THD meter
1kHz sine wave 6.3V p-p 2.2Vrms
‘scope
approx 0.001% THD+N (22K
BW
)
THD meter
(0.0006% THD +N (22K BW) bal
a/c
p
ins 4 & 5 U39
)
THD meter
Voltage/Analogue
Less than 5mV dc
voltmeter
THD meter
1kHz sine wave 6.3V p-p 2.2Vrms
scope
approx 0.0006% THD +N (22K
BW
)
THD meter
*THD Measurements: Measurements taken using Audio Precision System 1 with X1 1M scope prob
7
ni
p
0
4
U
4
*
9
3
O/P unbalanced stage dc voltage / ac waveform / THD
measurement (CD selected With disc playing 1kHz 0dB FS
tone)
5
ni
p
9
3
U
4
8
3
measurement (CD selected With disc playing 1kHz 0dB FS
tone)
4
ni
p
9
3
U
4
*
7
3
measurement (CD selected With disc playing 1kHz 0dB FS
tone)
Current to voltage O/P +ve dc voltage / ac waveform /
THD measurement (CD selected With disc playing 1kHz
0dB FS tone)
6
ni
p
7
3
U
4
*
6
3
Current to voltage O/P -ve dc voltage / ac waveform /
THD measurement (CD selected With disc playing 1kHz
0dB FS tone)
35*
4
Voltage/Analogue
U38 pin 6
28
Summary of Contents for Azur 840C
Page 5: ...Cambridge Audio Azur 840C CD Player Exploded Diagram To enhance viewing please print to A3 5 ...
Page 47: ...CS8406CZ DAC PCB U12 ADSP BF532BSTZ400 DAC PCB U13 7815 DAC PCB U14 U22 U49 U51 47 ...
Page 51: ...MPSA14 DAC PCB Q4 Q6 TIP31 DAC PCB Q10 Q11 BC817 25 DAC PCB Q1 Q12 Q13 Q17 Q18 51 ...
