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HA7Z Left hand channel Power amp c Cyrus Electronics Ltd 13-Aug-2001
S:\STUART\SERV1186.SCH
Cyrus III i (HA7Z) Gain = 52.25AV=34.36dB Freq Resp: 4.5Hz to 79KHz
1mA
1mA R103 560R
1mA R111 820R
3mA R113 100R
4.3mA
R124 4R7 NFR
5.5mA
10mA
+VCC
C102 47uF 63V
T101 BC856B
GND_IP
C107 150pF
C112 47uF 63V
GND_PSUL +CCS_L
T102 BC856B T109 BC846B R104 560R T105A IMZ1A R107 24R T105B IMZ1A R109 24R C105 39pF R115 150R R116 820R C104 1nF COG T106A IMZ1A R110 24R R117 16R R139 DNF
T111 2SA1038S
GND_PSUL
T117 2SC2389S T119 2SC3421-Y
LB+
R118 2k
T121 2SD1047
LBC119 DNF R121 100k R123 560R R128 220R C114 100nF R135 0R22 T113 BD235
D104 1N4002
OC+L
Set bias current to 20mA or 8mV across the bias socket, when warm.
SK101 SKTBIAS
C101
FIT WITH LINK R136 0R22 R137 22k C118 R138 3R9 C115 100nF
LIS_L
22uF 16V SMD
R102 2k R101 22k
SK102
HA7Z Left hand channel Power amp
R119 820R C120 DNF
R122 100k
GND_IP
GND_IP
R108 24R
T106B IMZ1A
OC-L
RV101 T114 BC846B R120 2k T118 2SA1038S T112 2SC2389S C108 150pF T120 2SA1358-Y T122 2SB817 D105 1N4002
R105 560R
C109 2200uF 6V3
1nF
SK103
GND_OP_L
GND_IP
T110 BC856B
-CCS_L GND_PSUL
T103 BC846B
R140 DNF
100R
GND_PSUL
C103 47uF 63V
T104 BC846B
R106 560R
R112 820R
R114 100R
GND_IP
R125 4R7 NFR
C113 47uF 63V
-VCC