Cambridge Audio Azur 840C, Service Manual

Page: 25 / 61

Cambridge Audio Azur 840C CD Player
AP19129/5
D
A
C
T
est Signals (Main Signal P
aths General)
Test Point
Schematic Ref
Page
Signal
Type
Measurement
Node
t
n
e
m
er
us
a
e
M
n
oit
pi
rc
s
e
D
Meter
Type
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
X
R
FI
D
P
S
5
2
ni
p
1
1
U
la
ti
gi
D
2
3
1 14
2
Digital
U11 pin 26
From SPDIF RX Digital audio Data (SPDIF I/P or CD With disc playing)
3V3 Continuous serial data signal
‘scope
15
2
Digital
U11 pin 27
From SPDIF RX Digital audio Bit CLK ( CD selected With disc playing)
3V3 square wave 2.8MHz (for 44.1kHz
sample freq from CD)
‘scope
16
2
Digital
U11 pin 28
From SPDIF RX Digital audio Word CLK ( CD selected With disc playing)
3V3 square wave 44.1kHz (for 44.1kHz
sample freq from CD)
‘scope
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
X
T
FI
D
P
S
1
2
ni
p
2
1
U
la
ti
gi
D
2
7
1 18
2
Digital
U12 pin 14
To SPDIF TX Digital audio Data (SPDIF I/P or CD With disc playing)
3V3 Continuous serial data signal
‘scope
19
2
Digital
U12 pin 13
To SPDIF TX Digital audio Bit CLK (CD selected With disc playing & Upsample frequency set to 48kHz)
3V3 square wave 3MHz (for 48kHz
sample freq from DSP)
‘scope
20
2
Digital
U12 pin 12
To SPDIF TX Digital audio Word CLK ( CD selected With disc playing)
3V3 square wave 48kHz (for 48kHz
sample freq from DSP)
‘scope
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
P
S
D
8
3
C/
4
4
R
la
ti
gi
D
2
1
2
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