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HA7Z Right hand channel Power amp c Cyrus Electronics Ltd 13-Aug-2001
S:\STUART\SERV1286.SCH
Cyrus III i (HA7Z) Gain = 52.25AV=34.36dB Freq Resp: 4.5Hz to 79KHz
1mA
1mA R203 560R
1mA R211 820R
3mA R213 100R
4.3mA
R224 4R7 NFR
5.5mA
10mA
+VCC
C202 47uF 63V
T201 BC856B
GND_IP
C207 150pF
C212 47uF 63V
GND_PSUR +CCS_R
T202 BC856B T209 BC846B R204 560R T205A IMZ1A R207 24R T205B IMZ1A R209 24R C205 39pF R215 150R R216 820R C204 1nF COG T206A IMZ1A R210 24R R217 16R R239 DNF
T211 2SA1038S
GND_PSUR
T217 2SC2389S T219 2SC3421-Y
RB+
R218 2k
T221 2SD1047
RBC219 DNF T213 BD235 R221 100k R223 560R R228 220R
D204 1N4002
OC+R
C214 100nF R235 0R22
Set bias current to 20mA or 8mV across the bias socket, when warm.
SK201 SKTBIAS
C201
FIT WITH LINK R236 0R22 R237 22k C218 R238 3R9 C215 100nF
LIS_R
22uF 16V SMD
R202 2k R201 22k
SK202
HA7Z Right hand channel Power amp
R219 820R C220 DNF
R222 100k
GND_IP
GND_IP
R208 24R
T206B IMZ1A
OC-R
RV201 T214 BC846B R220 2k T218 2SA1038S C208 150pF T220 2SA1358-Y T222 2SB817 D205 1N4002
R205 560R
C209 2200uF 6V3
1nF
SK203
GND_OP_R
GND_IP
T210 BC856B
-CCS_R GND_PSUR
T203 BC846B C203 47uF 63V
R240 DNF
100R
T212 2SC2389S
GND_PSUR
T204 BC846B
R206 560R
R212 820R
R214 100R
GND_IP
R225 4R7 NFR
C213 47uF 63V
-VCC