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PT558

PROFESSIONAL

TWO-WAY RADIO

V060802

SERVICE MANUAL

FM PORTABLE RADIO

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Summary of Contents for PT558

Page 1: ...PT558 PROFESSIONAL TWO WAY RADIO V060802 SERVICE MANUAL FM PORTABLE RADIO ...

Page 2: ...lectronic Shenzhen Co Ltd owns the copyright of the radio outward structure circuit design Kirisun Electronic Shenzhen Co Ltd owns the copyright of this service manual Publication without authorization is prohibited Kirisun Electronic Shenzhen Co Ltd owns the trademarks KIRISUN CONTENTS Chapter 1 Introduction 1 Chapter 2 Radio Overview and Function Keys 1 Chapter 3 Electrocircuit 2 Chapter 4 Funct...

Page 3: ...S1 105 RD07MV 001 1 PT558 3 Triode Q5 2SC5108 Y 104 SC5108 001 1 PT558 3 Belt Clip KBJ 05 1 1 3 Service All the Kirisun products are subject to the service warranty The main unit of the radio is guaranteed for service of 18 months In one of the following situations charge free service will not available No valid service warranty or original invoice Malfunction caused by disassembling repairing or ...

Page 4: ...ocal oscillator IF amplifier limiter phase frequency detector and noise amplifier IC5 inner circuit and X3 49 5MHz compose the 2nd local oscillator The 2nd local oscillation 49 5MHz and the 1st IF signal 49 95MHz are mixed at IC5 to generate the 2nd IF 450MHz After the 2nd IF signal is amplified and its amplitude is limited at IC5 and then filtered at porcelain filter CF1 450kHz IC5 demodulates an...

Page 5: ... processing circuit It supplies power to IC7 only when in transmitting and it is controlled by MCU J2 is the external MIC socket When external MIC is used the inner MIC will cut off automatically but PTT will remain activated 3 4 Frequency Synthesizer Figure 3 8 Frequency Synthesizer The radio adopts PLL Phase Locked Loop frequency synthesizer The frequency synthesizer consists of standard oscilla...

Page 6: ...equency Accesses the current channel status Controls the LED status indication Controls the power supply of each location Checks the action of each function key Generates CTCSS signals Generates DCS signals DCS decoding Squelch check and control Controls the content of voice indication 2 Memorizer E PROM AT24C08 Memorizes the radio channel data CTCSS DCS data and other data of function setting and...

Page 7: ... Connect 10K resistor with VSS 19 RST P19 I Reset input 20 INT0 P20 I Power check input 21 ENC P21 I Encoding switch selection SEL Connect the pull down resistor with VSS 22 XIN P22 I 7 3MHz Oscillator 23 XOUT P23 O 24 VSS P24 I Earthing Clock frequency shift H Open 25 SHIFT P25 O Final power supply H Open 26 PABC P26 O VCO crystal selection 27 OSCSI P27 I Connect the pull down resistor with VSS H...

Page 8: ...of receiver Cut off when in emergency alert state Q36 2SK1824 Receiver audio output switch Table 3 5 Diode Function Description D1 MA77 Transmitter antenna switch diode D2 MA77 Transmitter antenna switch diode D3 HSC277 VCO output switch D4 HSC277 Antenna switch D5 HSC277 Antenna switch D6 HSC277 VCO output switch D7 HSC277 5V regulated output current stretcher D8 HVC376B VCO oscillation variable ...

Page 9: ...ss PTT button when the radio is in scanning state the radio will transmit on the revert channel which has 6 types Selected channel The first channel in the scanning list Selected channel current channel If the radio is in the state of scanning pause it will transmit on the current communication channel Otherwise it will transmit on the first channel in the scanning list Priority channel The radio ...

Page 10: ...convenient Chinese English programming software KSP20 for users to set parameters on the radio The programming steps are as follows a Install the programming software KSP 20 on the computer b Connect the radio to the computer serial port with the specified programming line KSPL02 See Figure 4 1 a Turn on the computer power b Turn on the radio power c Click the KSP20 program to run the programming ...

Page 11: ...ting but the adjustment parameters in 4 3 Computer Test Mode Chapter 5 Service Assemble and Disassemble The radio is a precision communication equipment Please be careful when assemble or disassemble the radio during service 5 1 Removing and Installing the Battery To remove the battery push the latch upwards and remove the battery away from the radio See Figure 5 1 Figure 5 1 To install the batter...

Page 12: ...5 204 000558 R04 204 000558 R02 204 000558 R05 203 000558 005 201 000558 014 301 25050J R01 301 20040G 001 1 1 1 1 2 2 1 2 1 1 1 2 1 1 1 2 1 1 1 1 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 21 20 19 18 17 16 EMERGENCY BUTTON COVER EMERGENCY BUTTON LIGHT PIPE SPEAKER SPEAKER WATERPROOF NET MODEL LABLE PTT BUTTON FRAME PTT BUTTON SPEAKER SPRING LOGO LABLE ANTENNA WASHER SWITCH WATER PROOF WASHER ANTENNA ...

Page 13: ...utton test the PD power with the digital multimeter The power should lower than 3 5V 6 3 2 PLL Frequency Adjustment Under the computer test mode select frequency tune option and click adjustment to enter Adjust the TX frequency among 0 255 to the specified value Frequency error should less than 200Hz 6 3 3 TX Frequency Adjustment Under the computer test mode select high power low frequency and cli...

Page 14: ... Require ment Note Compreh ensive Test Device Before Mixing L9 L10 L7 L6 L5 ModePass Band 25MHz smooth wave Shape Not recom mend theuser toadjust it Audio Level Ch RX center frequency RF OUT 53dBm 501 V MOD 1kHz DEV 1 5 kHz Audio Load 16 RF Audio Signal Generator Oscillator Speak er Conne ctor Turn the volume knob clockwise Audio power 0 3 W Inner speake r power 1 2W High Frequency CH TX Lower tha...

Page 15: ...tingtube is broken and please change it Cannot talk to or hear other group members A Make sure the two communication radios are using the channel of the same frequency B Make sure the CTCSS DCS tone is the same as that of your group members C Out of the effective communication range Cannot receive signals A The antenna is not well connected and please screw the antenna again until secure B The sen...

Page 16: ...alk RX receiver SPK speaker TCXO temperature compensated crystal oscillators TX transmitter UL un lock VCO voltage control oscillator Chapter 9 KBC 58L Charger 9 1 Charger Specifications A Idling Input Current 30mA B Charging Terminal Maximum Idling Voltage 8 8V C Constant current charging 200 270mA D Maximum Charging Time 7 hours E Maximum Charging Voltage Limit 8 45 0 1V 9 2 Charging and Chargin...

Page 17: ...r JTBM455C24 lead free Plug in porcelain filter LTM450HT 450kHz À 3kHz lead free Plug in IF filter 49 95MHz 7 5KHz U 5 2 lead free Chip trimming resistor MVR22HXBRN473 47K 25 B Linear lead free Chip trimming resistor MVR22HXBRN683 68K 25 B Linear lead free Volume switch RD810S JA1 A103 0C61 MIC B6027AP402 65 Chip transistor 13MHz 2 5PPm Chip crystal resonator CSTCR7M30G53 R0 7 3M lead free Plug in...

Page 18: ...rew M2 5 5 0 flat round cross head nickel plating Self tapping screw M1 7 4 0 flat round cross head nickel plating PT558 03 electronic material 446MHz 0 5W 4W narrow band RD07 RD01 M38039FFHFP FLASH Antenna 558 03 fixed antenna 445 447MHz cold resistant material no colored dot 6 0 bottom exposed Potentionmeter washer 2 1 1 2 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 8 2 2 1 1 1 2 Under the FET field effec...

Page 19: ...lead free Chip resistor 0402 10R 5 lead free Chip resistor 0402 100R 5 lead free Chip resistor 0402 1K 5 lead free Chip resistor 0402 10K 5 lead free Chip resistor 0402 100K 5 lead free Chip resistor 0402 1M 5 lead free Chip resistor 0402 1 2K 5 lead free Chip resistor 0402 12K 5 lead free Chip resistor 0402 120K 5 lead free Chip resistor 0402 15K 5 lead free Chip resistor 0402 150K 5 lead free Ch...

Page 20: ...sistor 0603 47R 5 lead free Chip resistor 0603 470R 5 lead free Chip resistor 0603 4 7K 5 lead free Chip resistor 0603 47K 5 lead free Chip resistor 0603 560R 5 lead free Chip resistor 0603 5 6K 5 lead free Chip resistor 0603 56K 5 lead free Chip resistor 0603 560K 5 lead free Chip resistor 0603 68K 5 lead free Chip resistor 0603 8 2K 5 lead free Chip resistor 0603 82K 5 lead free Chip resistor 08...

Page 21: ... 033uF 10 16V X7R lead free Chip capacitor 0603 36P 5 50V C0G lead free Chip capacitor 0603 3P 0 25P 50V C0G lead free Chip capacitor 0603 3 5P 0 25P 50V C0G lead free Chip capacitor 0603 470P 10 50V X7R lead free Chip capacitor 0603 4700P 10 50V X7R lead free Chip capacitor 0603 0 047uF 10 16V X7R lead free Chip capacitor 0603 0 47uF 80 20 16V Y5V lead free Chip capacitor 0603 4P 0 25P 50V C0G le...

Page 22: ...ee Chip air cored coil 0 4 1 5 3TL negative high pin lead free Chip air cored coil 0 4 1 5 4TL negative high pin lead free Chip air cored coil 0 5 1 5 5T positive high pin lead free Chip air cored coil 0 4 1 5 8TL negative high pin lead free Chip bead EMI FILTER SMT BLM11A221S 0603 lead free Chip bead EMI FILTER SMT BLM21P300S 0805 lead free MIC B6027AP402 65 lead free Chip transistor 13MHz 2 5PPm...

Page 23: ...ery Hand Strap Earphone Charger Adapter Antenna Accessory Figure Specification 7 4V 1200mAh Li Ion 7 hour standard charger DC OUT 15V 400mA Model KB 58A 8AJD 20K KME 201 KME 202 KBC 58L KTC 58C1 KA 3U057 KA 2U046 21 PT558 SERVICE MANUAL ...

Page 24: ...22 Figure 1 PT558 Top Board Position Mark Diagram PT558 SERVICE MANUAL ...

Page 25: ...23 Figure 2 PT558 Bottom Board Position Mark Diagram PT558 SERVICE MANUAL ...

Page 26: ...24 Figur3 PT558 Schematic Circuit Pane Diagram ...

Page 27: ...8 25 Figur4 PT558 Schematic Circuit Pane Diagram ...

Page 28: ...KBC 58L Schematic Circuit Diagram Figure 5 KBC 58L Schematic Circuit Diagram 8 26 ...

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