QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Introduction Introduction Introduction Scope Scope of of of this this manual Scope this manual manual This manual is intended for use by experienced technicians familiar with similar types of commercial grade communications equipment. It contains all required service information the equipment and is current as of the publication date.
QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Disassembly repair Disassembly Disassembly for for repair repair Removing Removing Removing the the case case case assembly assembly assembly from from from the the chassis. chassis. chassis. 1. Remove the volume knob ① and channel knob ②.
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Disassembly repair Disassembly Disassembly for for repair repair Removing Removing Removing the the battery battery battery release release release lever lever lever from from from the the case case case assembly.
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Disassembly repair Disassembly Disassembly for for repair repair Assembling Assembling Assembling the the battery battery battery release release release lever lever lever 1. Place the lever ② onto the stopper ①.
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Disassembly repair Disassembly Disassembly for for repair repair ⑵. Twist the speaker wires twice, then attach the speaker to the speaker recess of the case assembly ②. Make sure the speaker is securely inserted.
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Disassembly repair Disassembly Disassembly for for repair repair nuts volume knob channel knob 4. The The nuts nuts of of the the volume volume knob knob and and channel channel knob knob Note that the shapes, colors and heights of nuts of the volume knob and channel knob are different from one another.
QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Circuit Description Circuit Circuit Description Description 1 1 1 、 、 、 Schematic Schematic Schematic b b b lock lock lock d d d iagram iagram iagram (1) General General General c c c ircuit...
QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Circuit Description Circuit Circuit Description Description known as transmitting EPC(Electronic power control). The change of high/low power is achieved through reference voltage. (3) Receive Receive Receive p p p rocess rocess rocess The signal received from antenna, after through the receive/transmit switch and BFP(L413,L414) will be amplified by RF amplifier Q409(3SK318).
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Circuit Description Circuit Circuit Description Description ② ② ② O O O rdinarily rdinarily rdinarily set set board( board( board( Without Without Without s s s crambler crambler crambler s s s et...
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Circuit Description Circuit Circuit Description Description The frequency that using by this transceiver is generated by Q306 when in transmitting mode, and generated by Q307 when in receiving mode. To control the oscillating frequency via transmitting the VCO control voltage to variable Diode(it is D302 and D303 when in transmitting mode, and it is D304 and D305 when in receiving mode) which getted from phase comparators.
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Circuit Description Circuit Circuit Description Description (7) Power Power Power supply supply supply This transceiver provides 4 of the 5V power supply to each segment: 5V, 5C, 5R and 5T. 5V(IC402) will always keep output when switch on the power supply. Although 5C is power- saving power supply output, 5R is 5 V , used for receiving and will keep output during receiving.
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Circuit Description Circuit Circuit Description Description ③The maximum modulation speaker The maximum maximum modulation modulation of of the the speaker speaker The maximum modulation of the speaker: Wide bandwidth: ≤ 5KHz, Factory default:≥...
QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 PARTS LIST PCB TOP TOP PARTS PARTS LIST LIST Designators Name and Specification Footprint C507 Capacitance C0402 C514 C513 Capacitance C0402 C346 C345 C344 C343 C517 C569 Capacitance 100P C0402 C527 C500 C426 C425 C424 C421...
QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 BOTTOM PARTS LIST BOTTOM BOTTOM PARTS PARTS LIST LIST Designators Name and Specification Footprint C320 C318 Capacitance 0.5P C0402 C319 Capacitance C0402 C539 C337 C538 Capacitance C0402 C317 C308 C226 C459 C458 C457...
QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Adjustment Description Adjustment Adjustment Description Description The radio can be adjusted by PC programming software. Adjustment procedure as follows, Instrument: Instrument: Instrument: Radio Communication Test Set 1 set Scanner 1 set 3A/12V Power Supply...
QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619 Schematic Schematic Schematic 5R 5R 5R 5R 5R 5R 5 T 5 T 5 T 5 T 5 T 5 T 5 T 5 T 5 T B ATT+ B ATT+ B ATT+...