Kirisun PT4208 Service Manual
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Kirisun PT4208 Service Manual

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  • Page 2: Table Of Contents

    Figure 4 PT4208 Main Board Bottom Layer Position Mark Diagram (420-470MHz)..35 Though the radio is waterproof, it's better to Figure 5 PT4208 Main Board Top Layer Position Value Diagram (420-470MHz) ..36 avoid putting it in rain or snow, or any other liquid Figure 6 PT4208 Main Board Bottom Layer Position Value Diagram (420-470MHz) ..37...

  • Page 3: Do Not Connect The Ac Power Or Dc Power Over Chapter 1 Overview

    Mark Specifications This manual applies to the service and maintenance of PT4208-02 RD01MUS1 105-RD01MU-R01 PT4208 series portable radios, and is intended for use by PT4208-02 Triode 2SC5108（Y） 104-SC5108-001 engineers and professional technicians that have been trained by Kirisun. It contains all required service information for 1.3 Service...

  • Page 4: Otherwise It Will Cause Fire, Electric Shock Or Chapter 3 Circuit Description

    PT4208 Service Manual receiving; flashes red while in low battery power. 2. Channel Selector Knob Rotate the knob to select channel 1-16. 3. On/Off/Volume Control Knob Rotate clockwise to turn on the radio, and keep turning to adjust the volume. To turn off the radio, rotate the knob Figure 3.2 Principle of Receiver...
  • Page 5 PT4208 Service Manual operate, and the speaker sounds. Speaker impedance: 16Ω. Q38: RX audio signal switch Q51: Warning tone switch Q25: Alert tone switch CTCSS signal filtering Demodulated audio signal from IC5 may contain CTCSS (Continuous Tone Control Squelch System) or DCS (Digital Code Squelch) signal.
  • Page 6 PT4208 Service Manual input to IC3B. provided by X4 (TCXO, 16.8MHz). The reference frequency from TCXO (Temperature Tx voice signal processing Controlled Crystal Oscillator) divided MIC Amp IC7C,IC7D Pre-Emphasis IC7A IC7B programmable reference divider in IC1 to produce reference frequency of 5kHz or 6.25kHz (determined by the preset channel frequency and is controlled by MCU).
  • Page 7 Communicate with external PC. PT4208 has 39 groups of standard CTCSS frequencies Access the status data of the radio. for your selection. See table 3.1. Control the PLL to generate Rx and Tx local oscillator The CTCSS signal is generated by MCU, and is passed frequencies.
  • Page 8 PT4208 Service Manual DCS (Digital Code Squelch), which is used to control 5V CPU power input SHIFT Clock beat shift. H：On squelch, is a series of continuous digital codes modulated on O (PWM) BPF tuning output carrier together with voice signal. If DCS is set, the speaker...
  • Page 9 PT4208 Service Manual HSC277 Antenna toggle switch SCLK_V Voice alert clock HSC277 Antenna toggle switch HSC277 VCO output switch Table 3.4 Function Description of Semiconductor HSC277 5V voltage regulation output current stretching HVC376B VCO oscillation varactor diode Components HVC376B VCO oscillation varactor diode...

  • Page 10: Chapter 4 Mode Introduction

    (3) Scan functional parameters should be reprogrammed. Therefore, Scan Function option, Priority Channel, Revert Channel, Kirisun has specially designed a set of Chinese/English Tx Dwell Time, Dropout Delay Time, Lookback Time. programming software KSP4208 with friendly interface, (4) Emergency settings...
  • Page 11 PT4208 Service Manual DTMF Encoder Sequences (1~12) (18) Five frequency points for DQT Deviation (Wideband) (19) Center frequency point Deviation Please refer to the “Help” document of KSP4208 for (Narrowband) details. (20) Five frequency points for Rx Sensitivity (21) Center frequency of DTMF Deviation (Wideband and Note: 1.

  • Page 12: Chapter 5 Assembly And Disassembly For Maintenance

    PT4208 Service Manual The other slaves can be continuously cloned. Carry out the operation in step 3. Note: The user can enable or disable the wired clone function through PC programming software. Once the wired clone function is disabled, the radio cannot enter the Wired Clone Mode.

  • Page 13: Chapter 6 Adjustment

    PT4208 Service Manual 203-007200-R07 Nut for Antenna Socket 203-000558-R02 Nut for Knob 201-004208-R09 Light Guide 201-004208-R01 Front Cabinet 201-004208-R08 Earphone Jack Cover 301-25080J-R01 Screw M2.5*8.0 202-004208-R01 Main Waterproof 201-004208-R02 Coping 301-25050J-R01 Screw M2.5*5.0 Figure 5.5 202-007200-R07 Rubber Plug 203-000558-R05 Spring for Battery Latch 5.4 Remove the main board from the Al chassis...
  • Page 14 Equipment and software listed in Table 6.1 are required After changing components during the maintenance, it is for test and adjustment of PT4208. necessary to test the radio and adjust its technical parameters. Table 6.1 Equipment and Software Required for Test and...
  • Page 15 PD by DMM. The resulting voltage should be lower than narrowband, and adjust the five frequency points to make the 4.5V. deviation be 0.4kHz. Table 6.2 High/Center/Low Frequency Point for PT4208 6.3.7 CTCSS deviation Low Freq Point Center Freq Point High Freq Point PT4208(1) 136.125 MHz...
  • Page 16 PT4208 Service Manual “High”, and “Highest” respectively. Firstly, click one of the adjust the five frequency points of the narrowband. The only frequency points, and adjust the RF signal frequency of the difference is that the frequency of the modulation signal test equipment to be the same with the receiving frequency should be 1kHz, and the deviation should be 1.5kHz.

  • Page 17: Chapter 7 Specifications

    PT4208 Service Manual Power meter/ PC Tuning Within Power Power: 7.5V General test set Adjust to 4W Mode ±0.2W Ammeter CH：Tx center freq point Adjust to modulation ±200Hz AG：1kHz/220mV ±4.5kHz deviation Deviation meter/ General test set Deviation Modulation CH：Tx center freq point...

  • Page 18: Chapter 9 Kbc-70C Charger

    PT4208 Service Manual charging turns to rapid charging. Or pre-charge when the E. The FM processing chip IC5 is broken. Please change it. voltage is lower than 8.3V ± 0.1V. When the battery voltage reaches 9.6V ± 0.2V, the battery will be deemed as full and the charging will stop.

  • Page 19: It May Cause Harm To The Radio If Signal Input On Appendix 1 Abbreviations

    PT4208 Service Manual 5. Output short circuit protection function (the current for short circuit is lower than 10mA) Appendix 1 Abbreviations AMP: Amplify, amplifier 9.5 LED Status Table ANT: Antenna Charger Status LED Status Indicator for APC: Automatic Power Control...
  • Page 20 PT4208 Service Manual 102-M2904V-R01 Operational amplifier/ NJM2904V, OP-AMP, ROHS 103-00MA77-R01 Chip switch diode / MA77, 0805, ROHS 103-0MA360-R01 Chip variable capacitor diode/ 0805, MA360(PANASONIC), ROHS 103-0MA742-R01 Chip switch diode / MA742(PANASONIC), ROHS 103-1SR154-R01 Chip diode, / 1SR154-400(ROHM), ROHS 103-1SS372-R01 Chip switch diode / 1SS372(TOSHIBA), ROHS...
  • Page 21 PT4208 Service Manual R297 109-040105-R01 Chip resistor / 0402,1M±5%,ROHS R160, R162 109-040111-R01 Chip resistor / 0402,110R±5%,ROHS 109-040122-R01 Chip resistor / 0402,1.2K±5%,ROHS C276, R188 109-040123-R01 Chip resistor / 0402,12K±5%,ROHS R211, R301 109-040124-R01 Chip resistor / 0402,120K±5%,ROHS R5, R8, R9, R17 109-040151-R01 Chip resistor / 0402,150R±5%,ROHS...
  • Page 22 PT4208 Service Manual (former 429003)，ROHS 116 112-043100-R01 Chip capacitor / 0402, 10P±0.5P,50V,C0G,ROHS C142, C195, C257, C282, C288 117 112-043101-R01 Chip capacitor / 0402,100P±5%,50V,C0G,ROHS C196 118 112-043102-R01 Chip capacitor / 0402,1000P±10%,50V,X7R,ROHS C1, C38, C72, C73, C74, C75, C96, C97, C98, C99, C100, C103, C104, C105,...
  • Page 23 PT4208 Service Manual 163 112-0632R0-R01 Chip capacitor / 0603,2P±0.25P,50V,C0G,ROHS 164 112-0632R5-R01 Chip capacitor / 0603, 2.4P/2.5P±0.1P, 50V, C0G, C2, C120, C121, C62 ROHS 165 112-063334-R01 Chip capacitor / 0603,0.33uF±10%,50V,X7R,ROHS C204 166 112-0633R0-R01 Chip capacitor / 0603,3P±0.25P,50V,C0G,ROHS C137 167 112-0633R5-R01 Chip capacitor / 0603,3.5P±0.25P,50V,C0G,ROHS...
  • Page 24 PT4208 Service Manual ROHS 201 114-08E103-R01 Chip inductor / FSLM2520-100J, 10uH±5%, 1008, ROHS 202 114-08E821-R01 Chip inductor / FSLM2520-R82K, 820nH±10%, L55, L56 1008, ROHS 203 115-1R53R0-R04 Chip air-cored coil/ 0.3*1.5*3TR,negative,high pin， L1, L2, L3, L4, L5, L6, L7, L8, L9, L10...
  • Page 25 PT4208 Service Manual 103-L190YG-R01 Chip LED / 0603, green, H19-213SYGC, ROHS D20, D29 103-MHC190-R02 Chip LED / 0603, red, 19-21SURC/S530-A2/TR8, ROHS 104-A144EE-R01 Chip triode / DTA144EE(ROHM), ROHS Q17, Q34, Q40 104-C144EE-R01 Chip triode / DTC144EE(ROHM), ROHS Q8, Q22, Q23, Q26, Q27, Q35, Q39, Q42, Q44, Q52, Q101...
  • Page 26 PT4208 Service Manual 109-040221-R01 Chip resistor/ 0402,220R±5%, ROHS R71, R189, R214, R215, R216 109-040222-R01 Chip resistor/ 0402,2.2K±5%, ROHS R18, R39, R57, R181, R185, R186, R187 109-040223-R01 Chip resistor/ 0402,22K±5%, ROHS R106, R153, R198 109-040224-R01 Chip resistor/ 0402,220K±5%,ROHS R17, R87, R164, R233, R246, 109-040271-R01 Chip resistor/ 0402,270R±5%,ROHS...
  • Page 27 PT4208 Service Manual C231, C233, C254, C271, C307, C310 127 112-043105-R01 Chip capacitor / 0402, 1uF±10%, 6.3V, X5R, ROHS C25, C30, C138, C170, C183, C192, C225, C235, C248, C251, C300, C303, C400 128 112-043110-R01 Chip capacitor / 0402, 11P±5%, 50V, C0G, ROHS...
  • Page 28 PT4208 Service Manual 169 112-063110-R01 Chip capacitor / 0603, 11P±5%, 50V, C0G, ROHS C2, C62, C63, L35 170 112-063130-R01 Chip capacitor / 0603, 13P±5%, 50V, C0G, ROHS C133 171 112-063150-R01 Chip capacitor / 0603, 15P±5%, 50V, C0G, ROHS C129 172 112-063160-R01 Chip capacitor / 0603, 16P±5%, 50V, C0G, ROHS...
  • Page 29 PT4208 Service Manual 207 114-06G682-R01 Chip inductor / MLF1608E6R8K, 6.8uH±10%, 0603, L27, L28, L29, L36, L50, L52 ROHS 208 114-06GR15-R01 Chip inductor / MLG1608BR15J, 150nH±5%, 0603, ROHS 209 114-07E220-R01 Chip Wire inductor/ C2012C-22NJ,22nH±5%,0805,ROHS 210 114-07E330-R01 Chip Wire inductor/ C2012C-33NJ, 33nH±5%, 0805,...

  • Page 30: Appendix 3 Structural Parts List

    PT4208 Service Manual Appendix 3 Structural Parts List Front Cabinet ASM. Part No. Description Part No. Description 201-004208-R01 Front Cabinet 204-003208-R02 Dust-proof Net for Speaker 201-004208-R09 Light Guide 121-100000-R20 Speaker 201-004208-R08 Earphone Jack Cover 202-004208-R02 Rubber PTT Key 301-25080J-R01 Screw M2.5*8.0...
  • Page 31 PT4208 Service Manual PART NUMBER DESCRIPTION 121-100000-R20 SPEAKER 201-004208-R01A FRONT CABINET 201-004208-R02A COPING 201-004208-R03A BATTERY LATCH 201-004208-R04A PTT KEY 201-004208-R05A POGO PIN SOCKET 201-004208-R06A VOLUME KNOB 201-004208-R07A CHANNEL SELECTOR KNOB 201-004208-R08A EARPHONE JACK COVER 201-004208-R09A LIGHT GUIDE 202-003208-R07 HEAT EXCHANGE SILICONE RUBBER WASHER...

  • Page 32: Do Not Turn On The Power Before The Antenna Or Appendix 4 Accessories

    PT4208 Service Manual Appendix 4 Accessories Name Model Specifications External View Battery KB-70B 7.4V 1700mAh Li Polymer Battery Hand strap KGS-03 Earphone KME-014 KME-015 Charger KBC-70Q Fast Charger DC OUT 12V 800mA Power adaptor KTC-50A1/50C1/50E1/50F1 Antenna KA stubby antenna...

  • Page 33: Figure 1 Pt4208 Block Diagram

    PT4208 Service Manual Figure 1 PT4208 Block Diagram...

  • Page 34: If The Antenna Has Been Damaged, Do Not Use The Figure 2 Pt4208 Schematic Circuit Diagram (420-470Mhz)

    PT4208 Service Manual Figure 2 PT4208 Schematic Circuit Diagram (420-470MHz) C170 100K 2T IN 150K...

  • Page 37: Though The Radio Is Waterproof, It's Better To Figure 5 Pt4208 Main Board Top Layer Position Value Diagram (420-470Mhz)

    PT4208 Service Manual Figure 5 PT4208 Main Board Top Layer Position Value Diagram (420-470MHz)

  • Page 38: Avoid Putting It In Rain Or Snow, Or Any Other Liquid Figure 6 Pt4208 Main Board Bottom Layer Position Value Diagram (420-470Mhz)

    PT4208 Service Manual Figure 6 PT4208 Main Board Bottom Layer Position Value Diagram (420-470MHz)

  • Page 39: Figure 7 Pt4208 Main Board Top Layer Layout (420-470Mhz)

    PT4208 Service Manual Figure 7 PT4208 Main Board Top Layer Layout (420-470MHz)

  • Page 40: Figure 8 Pt4208 Main Board Bottom Layer Layout (420-470Mhz)

    PT4208 Service Manual Figure 8 PT4208 Main Board Bottom Layer Layout (420-470MHz)

  • Page 41: Figure 9 Pt4208 Schematic Circuit Diagram (136-174Mhz)

    PT4208 Service Manual Figure 9 PT4208 Schematic Circuit Diagram (136-174MHz) 2T IN 33nH BLM11A221S...

  • Page 42: Figure 10 Pt4208 Main Board Top Layer Position Mark Diagram (136-174Mhz)

    PT4208 Service Manual Figure 10 PT4208 Main Board Top Layer Position Mark Diagram (136-174MHz)

  • Page 43: Figure 11 Pt4208 Main Board Bottom Layer Position Mark Diagram (136-174Mhz)

    PT4208 Service Manual Figure 11 PT4208 Main Board Bottom Layer Position Mark Diagram (136-174MHz)

  • Page 44: Kirisun Electronics (Shenzhen) Co., Ltd Owns Figure 12 Pt4208 Main Board Top Layer Position Value Diagram (136-174Mhz)

    PT4208 Service Manual Figure 12 PT4208 Main Board Top Layer Position Value Diagram (136-174MHz)

  • Page 45: Figure 13 Pt4208 Main Board Bottom Layer Position Value Diagram (136-174Mhz)

    PT4208 Service Manual Figure 13 PT4208 Main Board Bottom Layer Position Value Diagram (136-174MHz)

  • Page 46: Unauthorized Duplication Of Ksp4208 Software Figure 14 Pt4208 Main Board Top Layer Layout (136-174Mhz)

    PT4208 Service Manual Figure 14 PT4208 Main Board Top Layer Layout (136-174MHz)

  • Page 47: Figure 15 Pt4208 Main Board Bottom Layer Layout (136-174Mhz)

    PT4208 Service Manual Figure 15 PT4208 Main Board Bottom Layer Layout (136-174MHz)

  • Page 48: Kirisun Electronics (Shenzhen) Co., Ltd Owns Figure 16 Kbc-70C Schematic Circuit Diagram

    PT4208 Service Manual Figure 16 KBC-70C Schematic Circuit Diagram...

  • Page 49: Figure 17 Kbc-70C Top Layer Position Value Diagram

    PT4208 Service Manual Figure 17 KBC-70C Top Layer Position Value Diagram...

  • Page 50: Kirisun Electronics (Shenzhen) Co., Ltd Owns Figure 18 Kbc-70C Top Layer Position Mark Diagram

    PT4208 Service Manual Figure 18 KBC-70C Top Layer Position Mark Diagram...

  • Page 51: The Copyright Of The Radio Outward Appearance Figure 19 Kbc-70C Bottom Layer Position Value Diagram

    PT4208 Service Manual Figure 19 KBC-70C Bottom Layer Position Value Diagram...

  • Page 52: Figure 20 Kbc-70C Bottom Layer Position Mark Diagram

    PT4208 Service Manual Figure 20 KBC-70C Bottom Layer Position Mark Diagram...

  • Page 53: Kirisun Electronics (Shenzhen) Co., Ltd Owns Figure 21 Kbc-70C Layout

    PT4208 Service Manual Figure 21 KBC-70C Layout...

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