FRONT ch
LEVEL DIAGRAM
2CH IN 0dB
(200m V)
-10dB
-20dB
10dB
20dB
30dB
40dB
AVRS540BT/X550BT/X250BT LEVEL1 DIAG RAM
FRONT
AUDIO IN
A/D
DSP
D/A
DIR
DIGITAL
A/D IN
REV AMP
A/D IN
REV AMP
D/A O UT
LPF
4.47Vrm s/8ohm
H/P O UT
SPK OUT
NJU72340AFH3
PRE AMP1
ELECTRIC
VOLUME
ATT
FRONT
POWER AMP
A/D
-20dBFS
-30dBFS
0dBFS
-10dBFS
-2.78dB
+1.77dB
-2dB
VO L 00
+29dB
-24dB
SPK OUT
FRONT
H/P O UT
282m Vrm s
CS42528
0dBFS=5.6Vpp
DIFF. INPUT
=1.98Vrms
-40dBFS
CS42528
AD IN=145mV
(A/D IN)
-22.78dBFS
D/A
CS42528
0dBFS=5Vpp
DIFF. OUT
=1.77Vrms
-30dBFS
0dBFS
-10dBFS
-40dBFS
0dB
-10dB
-20dB
10dB
20dB
30dB
40dB
+1dB
+1.77dB
-20dBFS(DIG.IN)
-22.78dBFS
(A/D IN)
/33ohm
FULL SCALE LEVEL=2Vrm s
DO LBY LIM IT LEVEL (ALL ch-3dBFS)
G AIN setting of M ASTER VO L 00dB
-SW:YES(ANALOG)
-SW:YES(DIGITAL)
-SW:NONE(ANALOG)
-SW:NONE(DIGITAL)
+1.77dB
-34.78dBFS
(A/D IN)
+13dB
+10dB
+1.77dB
-32dBFS(DIG.IN)
=+1dB
=-2dB
=+13dB
=+10dB
FRONT ch
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
25
