Service manual

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MD-SR50H/50W/60E/60W
58 MD1 MD1 Input Operation mode selection input 1
59 P23 _PLAY Input Unit PLAY button operation detection input
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 (not used)
64 STBY _STBY Input Microcomputer standby input (not used)
65 Vcc VCC — Positive power supply
66 XTAL XTAL — Crystal connection terminal
67 EXTAL EXTAL — Crystal connection terminal
68 Vss VSS — Ground potential
69 PF7 _DCEXT Input DC-IN detection input
70 PF6 PCNT2 Output Vcc supply control output of power IC
71 PF5 PCNT1 Output Vref supply control output of power IC
72 PF4 RCPCNT Input/Output Record cir cuit power control output
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
76 IRQ0 _ARQK Input It is started by the button input, requirement
77 AVcc AVCC — 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 PLCHK Input Power supply circuit abnormal detection input
81 AN2 HKEY2 Input Unit key operation detection input 2
82 AN3 HKEY1 Input Unit key operation detection input 1
83 AN4 RKEY Input Remote control key operation detection
84 AN5 TEMP Input Ambient temperature detection inputinput
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 PLVOW Output Battery voltage measurement
90* TIOCB4 MCMON Output Internal openation status monitor
91* P26 P26 Output Spare
92 P27 PLVGN Output Battery voltage detection gain select output
93 PG0 CHGON Output Ni-MH Battery charge ON output
94 PG1 JPNP Input Kana conversion/Kana input existencel nonexistence discrimination
95 PG2 _KHOLD Input Unit key hold switch input
96 PG3 LDON Output P.U. laser ON/OFF control output
97 PG4 OPICGA Output P.U. detection sensitivity switching output
98 Vcc VDD — Positive power supply
99 P10 DCNT Output Mechanism driver enable output
100 P11 HDON Output Recording head current control output
IC401 RH-iX0341AWZZ: System Microcomputer (IX0341AW) (2/3)
Pin No.
FunctionPort Name Terminal Name
Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.