SURROUND ch
2CH IN 0dB
(200m V)
-10dB
-20dB
10dB
20dB
30dB
40dB
AVRS540BT/X550BT/X250BT LEVEL3 DIAG RAM
SURROUND
D/A O UT
LPF
SPK OUT
PRE AMP1
ELECTRIC
VOLUME
SURROUND
POWER AMP
+1.77dB
D/A
CS42528
0dBFS=5Vpp
DIFF. OUT
=1.77Vrms
-30dBFS
0dBFS
-10dBFS
-40dBFS
+1.77dB
-20dBFS(DIG.IN)
-22.78dBFS
(A/D IN)
FULL SCALE LEVEL=2Vrm s
DO LBY LIM IT LEVEL (ALL ch-3dBFS)
SURROUND ch
DSP OUT
D/A
NJU72340AFH3
G AIN setting of M ASTER VO L 00dB
-DD Config2(DIG .IN)
-A/D IN(ANALO G )
=+1dB
=+1dB
-PCM or DD Config1(DIG .IN) =-2dB
4.47Vrm s/8ohm
-2dB
VO L 00
+29dB
SPK OUT
FRONT
0dB
-10dB
-20dB
10dB
20dB
30dB
40dB
+1dB
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
27