Technics SX-PX554 Service Manual page 79

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C
CPL
SWITCHES & LEDS
IC2,3
Q2 6
BUFFER LED DRIVE
IC1
SEG0 SEG11 CM0 CM5
8BIT MICROCOMPUTER
DATA,SCK
CN1
CN3
IC21
D-A
CONVERTER
IC22
D-A
CONVERTER
WD0A WD15A
RD0A RD7A
RA0A RA14A
WA0A WA19A
WD0B WD15B
RD0B RD7B
RA0B RA14B
WA0B WA19B
09/08/2012
VR2
CN2
MAIN
VOLUME
SW0 SW7
CN4
CN2
IC26A
IC26B
IC11
D0 D7
256K BIT
PSEUDO
STATIC
RAM
A0 A14
IC17
D0 D7
256K BIT
PSEUDO
STATIC
RAM
A0 A14
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D A
CPR
SWITCHES & LEDS
CN3
LED1
LED DISPLAY
IC12
D0 D15
64M BIT
MASK RAM
A0 A19
IC18
D0 D15
64M BIT
MASK RAM
A0 A19
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MAIN
Q6
+15V
+5A REGULATOR
+5A
D14 D12
+5B
D13
-15V
+VCC
+5D
Q7,8
+5D REGULATOR
+3.3V
Q9
+3.3V REGULATOR
CN1
CN6