Cambridge Audio Azur 840C, Service Manual

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Cambridge Audio Azur 840C CD Player
AP19129/5
D
A
C
T
est Signals (Main Signal P
aths Right Channel)
Test Point
Schematic Ref
Page
Signal Type
Measurement
Node
e
py
T
r
et
e
M
t
n
e
m
er
us
a
e
M
n
oit
pi
rc
s
e
D
e
p
oc
s‘
ev
a
w
er
a
u
qs
z
H
M
6
7
5.
4
2
3
V
3
kc
ol
c
r
et
sa
m
2
C
A
D
o
T
7
2
ni
p
1
3
1
U
la
ti
gi
D
4
0
4 41
4
Digital
U131 pin 5
To DAC2 Digital audio Data (SPDIF I/P or CD With disc playing)
3V3 Continuous serial data signal
‘scope
42
4
Digital
U131 pin 3
To DAC1 Digital audio Bit CLK (CD selected With disc playing)
3V3 square wave 12.288MHz
‘scope
43
4
Digital
U131 pin 2
To DAC1 Digital audio Word CLK (CD selected With disc playing)
3V3 pulses to 0V repetition rate
384kHz.
‘scope
44
4
Voltage
U33 pin 2
Mid rail DC voltage of +ve current O/P of DAC
2.8V dc
voltmeter
45
4
Voltage
U34 pin 2
Mid rail DC voltage of -ve current O/P of DAC
2.8V dc
voltmeter
r
et
e
mtl
ov
c
d
V
8.
2
f
er
e
ga
tl
ov
C
D
li
ar
di
M
3
ni
p
3
3
U
e
ga
tl
o
V
4
6
4
r
et
e
mtl
ov
c
d
V
0.
4
e
ga
tl
ov
f
er
ec
r
u
os
t
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r
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C
5
ni
p
3
5
U
e
ga
tl
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V
4
7
4
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et
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mtl
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c
d
V
0.
4
e
ga
tl
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f
er
ec
r
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os
t
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C
6
ni
p
3
5
U
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ga
tl
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V
4
8
4
r
et
e
mtl
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c
d
V
3.
3
e
ga
tl
ov
f
er
ec
r
u
os
t
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C
7
ni
p
3
5
U
e
ga
tl
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V
4
9
4
r
et
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mtl
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c
d
V
0.
4
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ga
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f
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C
3
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p
3
5
U
e
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4
0
5
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mtl
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c
d
V
0.
4
e
ga
tl
ov
f
er
ec
r
u
os
t
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C
2
ni
p
3
5
U
e
ga
tl
o
V
4
1
5
r
et
e
mtl
ov
c
d
V
3.
3
e
ga
tl
ov
f
er
ec
r
u
os
t
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C
1
ni
p
3
5
U
e
ga
tl
o
V
4
2
5
29