Read Sharp SD-AT50H (serv.man18) Service Manual online
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SD-AT50H
Figure 11 BLOCK DIAGRAM (1/9)
ANALOG SIGNAL
INPUT
OUTPUT OFFSET
ADJUSTMENT
+5V
ADIC INSIDE
(IX2815AF)
IN
NF+
A+5V
D+5V
D+5V
OUT+
OUT-
NF–
B, S
B, S
B, S
B, S
H-IN
L-IN
H-IN
L-IN
VKK
D+5V
VCC
VDD(D+5V)
+POWER
-POWER
+POWER
-POWER
ICA102, ICA107
ICA202, ICA207
ICA302, ICA307
ICA202, ICA207
ICA302, ICA307
SLA5505M
SWITCHING AUDIO
POWER AMP.
LOW PASS FILTER
LOAD
OFFSET
DETECTION CIRCUIT
NF
+B
A+5V
KIA78M05
KIA78M05
KIA78M05
IN
IN
OUT
GND
ICA101, ICA201, ICA301
TC74AC8T
QUAD 2 INPUT AND GATE
OUT
-B
-B
+B
-B
GND
GND
+B
D+5V
IN
OUT
GND
REFERENCE
VOLTAGE + 6.5 V
-POWER
DEADTIME CONTROL
(6 CH AVAILABLE)
+
–
+
–
+
–
ICA100, ICA200, ICA300
IX2815AF
7TH ORDER
∆∑
MODULATION
CONVERSION LSI
ICA401
KIA7805AP VOLTAGE
REGULATOR
ICA402
KIA7805AP VOLTAGE
REGULATOR
ICA400
KIA7806AP VOLTAGE
REGULATOR
OVERCURRENT/
OVERHEAT DETECTION CIRCUIT
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