All manuals and user guides at all-guides.com DR-M03SX Service Manual DR-M06TH CONTENTS SPECIFICATIONS PARTS LAST 1) General CPU Unit 2) Transmitter MAIN Unit 22~24 3) Receiver VCO Unit CIRCUIT DESCRIPTION SP Unit 1) Receiver System Mechanical Parts 2) Transmitter System Packing..
All manuals and user guides at all-guides.com CIRCUIT DESCRTPTION 1) Receiver System 1. Front End The signal from the antenna is passed through a low-pass filter and input to the voltage step up circuit consisting Of L14. The signal from L14 is led to the gate of Q1.
All manuals and user guides at all-guides.com 2) Transmitter System 1. Modulation Circuit The microphone amplifier IC1 (IDC, LPF) consists of two operational amplifi- ers. The signal from the microphone is led to pre-emphasis circuit consisting of C36 and R47 and then to the limiter circuit. The limiter circuit uses the saturation of the OP amplifier.
All manuals and user guides at all-guides.com 4) Terminal Function of Microprocessor Port No. I/O Logic PinName Description SEG19 LCDSegment19 Output SEG20 LCDSegment20 Output SEG21 LCDSegment21 Output SEG22 LCDSegment22 Output SEG23 LCDSegment23 Output AnalogGround 0V Vref Reference Voltage Input 5V CPU Power Supply hnput 5V 1750_ ToneBurstOutput...
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All manuals and user guides at all-guides.com Port No. I/O Logic PinName Description 40 I/O Clock Data Output for EEPROM 41 O Clock Clock Output 42 O Clock DataOutput 43 O Clock Strobe Output for PLL IC 44 O Clock Strobe Output for CTCSS IC 45 I Active Low SFT Shift Key Input...
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All manuals and user guides at all-guides.com 11) M57735 (XA0271) 50~54MHz RF Power Module Page 14...
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All manuals and user guides at all-guides.com ES0017 KZ0047AZ FF0028 FF0031 KS0041CZ...
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All manuals and user guides at all-guides.com AD0010 (DRM06TH) AB0011 (DRM03SX) KZ0012 (DRM06) KZ0025 (DRM03)
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All manuals and user guides at all-guides.com DR-M03SX AB0011 C504 Q501 L502 QR0112 C501 C502 C503 L501 2SC3133 UP0255A QR0018 Page 20-1...
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All manuals and user guides at all-guides.com PARTS LIST PART PARTS PARTSC UNIT REF SCODE DESCRIPTION SX UNIT REF CODE DESCRIPTION SX UNIT REF DESCRIPTION C201 CU3035 C1608JB1H102KTA 1 CPU PL202 EP0003 Lamp(BQ031-30403A) 1 CPU R271 RK3046 ERJ3GSYJ472V C202 CU3035 C1608JB1H102KTA 1 CPU Q201 XT0095...
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All manuals and user guides at all-guides.com PARTS LIST PART PARTS PARTSC UNIT REF SCODE DESCRIPTION SX UNIT REF CODE DESCRIPTION SX UNIT REF DESCRIPTION MAIN C34 CE0340 16MV 47HC+TS 1 MAIN C101 CU3047 C1608JB1H103KTA 1 MAIN D15 XD0254 1SS355 TE17 MAIN C35 CU3035 C1608JB1H102KTA...
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All manuals and user guides at all-guides.com PARTS LIST PART PARTS PARTSC UNIT REF SCODE DESCRIPTION SX UNIT REF CODE DESCRIPTION SX UNIT REF DESCRIPTION MAIN R3 RK3050 ERJ3GSYJ103V 1 MAIN R82 RK3038 ERJ3GSYJ102V 1 VCO C313 CU3035 C1608JB1H102KTA MAIN R4 RK3071 ERJ3GSYJ564V 1 MAIN R83...
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All manuals and user guides at all-guides.com PARTS LIST PART PARTS PARTSC UNIT REF SCODE DESCRIPTION SX UNIT REF CODE DESCRIPTION SX UNIT REF DESCRIPTION Mechanical ES0017 Speaker(057M9017) 1 SCREW SET AA0013 BH M5+20 FE/ZN 4 PA C501 CU3021 C1608CH1H180JTA Mechanical FF0015 Cloth(BLIND DR110)
All manuals and user guides at all-guides.com ADJUSTMENT 11. Distortion Meter 1) Required Test Equipment 1. Digital Multimeter Measurable frequency: 1kHz Voltage range: FS= 18Vorso Input level: Up to 40dB Input resistance: 1M ohm or more Distortion level: 1% - l00% 2.
All manuals and user guides at all-guides.com 2) Adjustment for DRM03SX SSG Mod:1KHz +/-3.5KHz/DEV SP terminal is connected to 8ohm dummy load. RX speaker output level is 50 to 100mW 1. Power supply voltage is 13.8V. Power switch is off. 2.
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All manuals and user guides at all-guides.com 2) Adjustment for DRM06TH/T SSG Mod:1KHz +/-3.5KHz/DEV SP terminal is connected to 8ohm dummy load. RX speaker output level is 50 to 100mW 1. Power supply voltage is 13.8V. Power switch is off. 2.
All manuals and user guides at all-guides.com PC BOARD VIEW 1-1 Main Unit Side A D15 or R125 C22 C43 C65 C66 C68 C69 C70 C77 C99 C103 C106 C112 C124 C126 C150 M03 SX 181 151 101 101 M06 TH 102 101 820 470 470 Page 35-1...
All manuals and user guides at all-guides.com 1-2 Main Unit Side A C150 L1 L7,8,15 D15 R125 C114 R106 L2 C154 R130 Q20 R59 R101 D4 M06 T 220n 220n 1SS355 220n 2sc3082 183 222 1SS355 10 M03 SX 150 390n 2SC2954 102 2sc3356 183...
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PC BOARD VIEW 1-3 Main Unit Side A All manuals and user guides at all-guides.com Page 35-3...
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2-1) Main Unit Side B All manuals and user guides at all-guides.com C140 0.47/35V R107 C121 R102 C118 C122 C119 Page 36-1...