Yamaha CRX-E300 Service Manual page 33

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3 7 63 1515 0
IC201: M30217MAAFP (OPERATION P.C.B.)
No. PORT
78 P52
79 P51
80 P50
81 P67
82 P66
83 P65
84 P64
85 P63
86 P62
87 P61
88 P60
89 Vee
90 P107
91 P106
92 P105
93 P104
94 P103
95 P102
96 P101
97 AVSS
98 P100
99 VREF
100 AVCC
TE
L 13942296513
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Name IN/OUT
SEG25 POD O SEGMENT 25 (P25)
SEG26 POD O SEGMENT 26 (P26)
SEG27 POD O SEGMENT 27 (P27)
SEG28 POD O SEGMENT 28 (P28)
SEG29 POD O SEGMENT 29 (P29)
SEG30 POD O SEGMENT 30 (P30)
SEG31 POD O SEGMENT 31 (P31)
SEG32 POD O SEGMENT 32 (P32)
SEG33 POD O SEGMENT 32 (P33)
SEG34 POD O SEGMENT 34 (P34)
SEG35 POD O SEGMENT 35 (P35)
– – P0, P1, P5, P6 Pull-down Resistor Voltage Input
VPRTCT I Power Supply Voltage Detect IN (Protection)
EXTIN I Expansion IN Port 1, 2 (TC74HC4051A) A-D/IN Input
/CMDSEL O [CD] Serial I/O Command Select
LDCTRL O [CD] Laser Diode Control (Normal/RW)
TRAY O [CD] Tray Open / Close (3-value control by switching I/O)
STAT I [CD] Servo Status Signal
/MNRST O [CD] /MNRST
– – Connect to VSS (GND).
/QSEL O [CD] Serial I/O Qcode Read Select
– – A-D, D-A Reference Voltage Input
– – Connect to VCC Terminal (+5V).
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Function
Q Q
3 6 7 1 3
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2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
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CRX-E300
9 9
[ (Vcc-43)V]
[0 VREF]
[ VCC]
2 8 9 9
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