Specifications

RMU800A SERVICE MANUAL
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Component Description
1. TX-RX Unit
Ref. No. Part Name Type Description
IC102 IC Power module Power module
IC103 IC AT29C02-90T1 Flash ROM
IC104 IC NJM2904V Single-supply dual operational amplifier
IC105 IC AT2408N12.5S EEPROM
IC106 IC AK2346 Audio processor
IC107 IC TA75W558FU Dual operational amplifier
IC108 IC TC75W51FU Dual operational amplifier
IC109 IC NJM4558M Dual operational amplifier
IC110 IC NJM2904V Single-supply dual operational amplifier
IC111 IC XC62FP3302P Positive voltage regulator
IC113 IC TA7805F Positive voltage regulator
IC114 IC TA78L09 Positive voltage regulator
IC115 IC TA7805S Positive voltage regulator
IC116 IC TA75S01F Single operational amplifier
IC117 IC TA75S01F Single operational amplifier
IC118 IC TA75W01FU Dual operational amplifier
IC119 IC TA31136FN IF detector
IC120 IC M16C CPU
IC121 IC BU4066BCFV Quad analog switch
IC122 IC LC73872M DTMF Receiver
IC125 IC M62364FP D/A converter with buffer amplifiers
IC126 IC TDA8561Q Power amplifier
IC127 IC TC4013BF Dual D-type Flip-flop
2. DISPLAY UNIT
Ref. No. Part Name Type Description
IC501 IC TA7805F Voltage supply.
IC 502 IC R3111H421C Voltage detector.
IC 503 IC UPD780112 Display CPU.