Sharp MD-MT80W(S), Service Manual

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MD-MT80W/90W/90/90C
58 MD1 MD1 Input Operation mode selection input 1
59 P23 DCEXT Input DC-IN detection (level)
60 WDTOVF WDTOVF Output Watch dog timer (not used)
61 MD2 MD2 Input Operation mode selection input 2
62 RES _RESET Input Microcomputer hard reset input
63 NMI NMI Input Nonmaskable interruption input (not used)
64 STBY _STBY Input Microcomputer standby input (not used)
65 Vcc VCC Input Positive power supply
66 XTAL XTAL — Crystal connection terminal
67 EXTAL EXTAL — Crystal connection terminal
68 Vss VSS — Ground potential
69 PF7 _PLAY Input Unit PLAY button operation detection input
70 PF6 _REC Input Unit REC button operation detection input
71 PF5 _STOP Input Unit STOP button operation detection input
72* PF4 PF4 Output Reserve
73 PF3 _DINT Input System LSI interruption
74 PF2 ARQD Input Disk cap opens and closes detection/it is started and required
75 PF1 _RPLAY Input Remote control PLAY key operation detection input
76 IRQ0 _ARQK Input Start request by the key /DC-IN input
77 AVcc AVCC Input A/D and D/A converter positive power supply
78 Vref VREF — A/D and D/A converter reference voltage
79 AN0 PLVBAT Input Battery voltage detection input
80 AN1 ANI1 Input Reserve
81 AN2 TEMP Input Ambient temperature detection input
82 AN3 RKEY Input Remote control key operation detection input
83 AN4 HKEY1 Input Unit key operation detection input 1
84 AN5 HKEY2 Input Unit key operation detection input 2
85 AN6 CHGCNT Output Charging current control output
86 DA1 LDVAR Output P.U. laser power setting output
87 AVss AVSS — A/D and D/A converter ground potential
88 Vss VSS — Ground potential
89 P24 CHGON Output Battery charge ON/OFF control output
90* TIOCB4 MCMON Output Internal operation status monitor
91 P26 PLVON Output Battery power supply line ON/OFF
92 P27 DCNT1 Output Mechanism driver enable output
93 PG0 SENSE Input System LSI servo sense input
94 PG1 _FOK Input Focus OK signal input
95 PG2 _XRST Output System LSI hard reset output
96 PG3 CKSTP Output Microcomputer standby operation monitor output
97 PG4 _EJSW Input Ejection lever operation detection input
98 Vcc VDD Input Positive power supply
99 P10 PCNT2 Output Servo DC-DC converter ON/OFF control
100 P11 PCNT1 Output Main DC-DC converter ON/OFF control
IC401 RH-iX0409AWZZ :System Microcomputer (IX0409AW) (2/2)
Pin No.
Function
Port Name
Terminal Name Input/Output
In this unit, the terminal with asterisk mark (*) is open terminal which is not connected to the outside.