JETStream JT220M Service Manual Download | Manualshive

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JT220M

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Summary of Contents for JT220M

Page 1: ...Stability 2 5ppm Dimensions W x H x D 145 x 47 x 190 mm Weight Approx 1 2kg 2 6lb RECEIVER Circuitry Double conversion superheterodyne Intermediate Frequency 1st 2nd 38 85MHz 450kHz Sensitivity 12dB S...

Page 2: ...15 AF SQ P24 MULTIPLY X2 PLL IC TCXO 8C 5C X200 P53 P51 P50 P07 5C D A U505 M62364F 3 8 CONV CTCSS D A CONV U505 M62364F 1 8 U205 LMX1511 CHARGE PUMP CHARGE PUMP Q223 2SA1832 GR Q224 2SC4738 GR 19 200...

Page 3: ...and a band pass filter L206 L207 and varactor diodes D207 D208 After the signal is amplified Q206 the signal is filtered through a band pass filter L205 L206 and varactor diodes D205 D206 to eliminat...

Page 4: ...s high the ceramic filter SW diodes D200 D201 cause CF201 to turn on to receive a Wide signal When the Narrow port is low the ceramic filter SW diodes D200 D201 cause CF200 to turn on to receive a Nar...

Page 5: ...l in the phase comparator in U205 The output signal from the phase comparator is filtered through a low pass filter and passed to the VCO to control the oscillator frequency See Fig 6 VCO The operatin...

Page 6: ...high frequency harmonic components and the resulting signal is transmitted through the antenna terminal See Fig 8 Fig 8 Transmitter system APC Circuit The automatic transmission power control APC cir...

Page 7: ...as an 64k bit EEPROM U6 The EEPROM contains adjustment data The CPU U2 controls the EEPROM through two serial data lines See Fig 11 Fig 11 APC Circuit Display Circuit The CPU U2 controls the display L...

Page 8: ...with MOD and the resulting signal goes to the VCO This signal is applied to a varicap diode in the VCO for direct FM modulation See Fig 13 Fig 13 Encode circuit Decode CTCSS DCS DTMF The signal from A...

Page 9: ...lied to the radio the voltage regulator IC U1 supply into the CPU VDD and reset voltage detect IC U5 U5 will generate signal RESET in to the reset terminal on the CPU U2 to carry out a power ON reset...

Page 10: ...ithin 200Hz 2 Maximum power alignment 1 CH TX high 2 Adjustment HEX value FF 3 Transmit Power meter VR200 55W 3 High power 1 CH TX low CH TX low CH TX center CH TX high CH TX high 2 Transmit Encoder k...

Page 11: ...11 DTMF deviation 1 CH TX center Wide Narrow 2 Transmit 3 0 kHz Wide 1 5kHz Narrow 100Hz Receiver Section Item Condition Measurement Adjustment Specifications Remarks Test equipment Terminal Parts Me...

Page 12: ...0 SMT CAPACITOR 0603 2 22P 5 50V C41 SMT CAPACITOR 0603 1 120P 5 50V C42 C43 SMT CAPACITOR 0603 2 20P 5 50V C44 SMT CAPACITOR 0603 1 473 10 50V C46 SMT CAPACITOR 0603 1 182P 10 50V C47 C48 SMT CAPACIT...

Page 13: ...55 SMT RESISTOR 0603 1 470R 5 R56 SMT RESISTOR 0603 1 4 7K 5 R57 SMT RESISTOR 0603 1 2 2K 5 R58 SMT RESISTOR 0603 1 4 7K 5 R59 SMT RESISTOR 0603 1 470K 5 R60 SMT RESISTOR 0603 1 22K 5 R61 SMT RESISTOR...

Page 14: ...SMT IC SOP 8 1 AT24C64RM 8 U7 SMT IC SSOP8 P 1 TC4W53FU U8 SMT IC SSOP8 1 LM2904V L1 L3 SMT FERRITE BEAD BLACK 0805 3 271T L4 L6 SMT FERRITE BEAD BLACK 0603 3 271T J1 FLAT CABLE CONNECTOR SSOI32F 1 0...

Page 15: ...603 8 103 10 50V C226 SMT CAPACITOR 0603 1 NOUSE C227 C230 SMT CAPACITOR 0603 4 104 10 50V C231 SMT CAPACITOR 0603 1 NOUSE C232 C237 SMT CAPACITOR 0603 6 104 10 50V C238 SMT CAPACITOR 0805 1 104 10 50...

Page 16: ...91 C292 SMT CAPACITOR 0603 2 NOUSE C293 SMT CAPACITOR 0603 1 18P 5 50V C294 C295 SMT CAPACITOR 0603 2 NOUSE C296 SMT CAPACITOR 0603 1 18P 5 50V C297 C298 SMT CAPACITOR 0603 2 2P 0 1P 50V C299 SMT CAPA...

Page 17: ...R 0603 1 470P 10 50V C327 SMT RESISTOR 0603 1 0R 5 C328 C340 SMT CAPACITOR 0603 13 470P10 50V C341 SMT CAPACITOR 0603 1 5P 0 1P 50V C342 C344 SMT CAPACITOR 0603 3 16P 5 50V C345 C346 SMT CAPACITOR 121...

Page 18: ...75 C377 SMT CAPACITOR 0603 3 100P 5 50V C378 SMT CAPACITOR 0603 1 33P 5 50V C379 SMT CAPACITOR 0603 1 68P 5 50V C380 SMT CAPACITOR 0603 1 680P 10 50V C381 SMT CAPACITOR 0805 1 474 10 50V C382 C383 SMT...

Page 19: ...C521 SMT CAPACITOR 0603 6 104 10 50V C522 SMT CAPACITOR 0603 1 104P 5 50V C523 C526 SMT CAPACITOR 0603 4 104P 5 50V C527 SMT CAPACITOR 0603 1 82P 10 50V C528 C530 SMT CAPACITOR 0603 3 NOUSE C531 SMT...

Page 20: ...5 2 470uF25V E102 E105 ELECTRO 4 8 4 47uF25V E200 ELECTRO 4 8 1 47uF25V E202 SMT TANTALUM CAPACITOR A type 1 0 22uF 20 35V E203 ELECTRO 5 8 1 100uF16V E204 ELECTRO 5 8 1 47uF25V E205 SMT TANTALUM CAPA...

Page 21: ...ISTOR 0603 2 47K 5 R106 SMT RESISTOR 0805 1 1K 5 R200 R201 SMT RESISTOR 0603 2 15K 5 R202 SMT RESISTOR 0603 1 3 9K 5 R203 SMT RESISTOR 0603 1 3 3K 5 R204 R210 SMT RESISTOR 0603 7 10K 5 R211 SMT RESIST...

Page 22: ...242 R244 SMT RESISTOR 0603 3 100R 5 R245 SMT RESISTOR 2010 1 100R 5 R246 SMT RESISTOR 0603 1 100R 5 R247 R249 SMT RESISTOR 0603 3 100K 5 R250 SMT RESISTOR 0603 1 39K 5 R251 R256 SMT RESISTOR 0603 6 10...

Page 23: ...30K 5 R292 SMT RESISTOR 0603 1 4 7K 5 R293 R294 SMT RESISTOR 0603 2 NOUSE R295 SMT RESISTOR 0603 1 2 2K 5 R296 SMT RESISTOR 0603 1 180K 5 R297 R299 SMT RESISTOR 0603 3 NOUSE R300 SMT RESISTOR 0603 1 2...

Page 24: ...0603 1 10R 5 R333 SMT RESISTOR 0603 1 47R 5 R334 SMT RESISTOR 0603 1 51K 5 R335 SMT RESISTOR 0603 1 4 7K 5 R336 SMT RESISTOR 0603 1 1 5K 5 R337 SMT RESISTOR 1206 1 33R 5 R338 SMT RESISTOR 0603 1 270R...

Page 25: ...R 0603 1 NOUSE R541 SMT RESISTOR 0603 1 1K 5 R542 R544 SMT RESISTOR 0603 3 NOUSE R545 SMT RESISTOR 0603 1 30K 5 R546 SMT RESISTOR 0603 1 22K 5 R547 SMT RESISTOR 0603 1 0R 5 R548 R549 SMT RESISTOR 0603...

Page 26: ...1 150K 1 R578 SMT RESISTOR 0603 1 4 22K 1 R579 SMT RESISTOR 0603 1 715K 1 R580 SMT RESISTOR 0603 1 22K 5 R581 SMT RESISTOR 0603 1 39K 5 R582 SMT RESISTOR 0603 1 680K 5 R583 SMT RESISTOR 0603 1 100K 5...

Page 27: ...TANCE DIODE 0805 2 NOUSE D223 SMT VARIABLE CAPACITANCE DIODE 0805 1 JDV2S14E FH D224 D225 SMT DIODE 0805 2 1SS355 D226 D227 SMT DIODE SC 79 2 MA2S111 D228 SMT ZENER DIODE 0805 1 5 1V D229 SMT ZENER DI...

Page 28: ...4215 Q212 SMT FET SOT 89 1 2SK3078A Q213 SMT DIGITAL TRANSISTOR EMT3 1 DTA114EE Q214 SMT FET PLD 1 RD07 Q216 SMT FET TO500 1 MRF7042 Q217 Q218 SMT FET SOT 323 2 2SK1875 Q219 SMT FET SOT 523 1 2SJ243 Q...

Page 29: ...R CORE COIL 4 0 35 1 4 6T L208 SMT CAPACITOR 0805 1 2P 0 1P 50V L209 SMT RESISTOR 0805 1 0R 5 L210 L211 SMT SMALL FIXED INDUCTOR 0603 1 47NH L212 SMT WIRE WOUND INDUCTOR 0805 1 39NH L213 L214 SMT WIRE...

Page 30: ...246 AIR CORE COIL 2 0 5 3 9 5T L247 SMT WIRE WOUND INDUCTOR 0805 1 22NH L248 SMT SMALL FIXED INDUCTOR 0603 1 27NH L249 L250 SMT FERRITE BEAD BLACK 0603 2 271T L251 L252 SMT SMALL FIXED INDUCTOR 0603 2...

Page 31: ...JT220M PC board views...

Page 32: ...PC board views JT220M...

Page 33: ...PC board views JT220M...

Page 34: ...PC board views JT220M...

Page 35: ...PC board views JT220M...

Page 36: ...PC board views JT220M...

Page 37: ...PC board views JT220M...

Page 38: ...PC board views JT220M...

Page 39: ...K 11 OSC IN 1 FIN 10 DATA 13 LE 14 FC 15 PWDN 19 DO 6 LD 8 OSC OUT 3 BISW 16 FOUT 17 PMPp 18 PMPr 20 NC 2 NC 9 NC 12 VP 4 VCC 5 GND 7 U205 LMX1511TM 20 L209 R0 C362 7P C C256 102P 8C C352 12P D 3 G 2...

Page 40: ...A 1 B 2 C 3 J502 PHONEJACK VLO C508 103P 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 J500 MAI N I NTERFA CE 0 5S 1 32PB W N RSSI AIR RX TX CLK DAT STB PLD MI...

Page 41: ...DATA LINE PLL STB ENABLE PLL LD LINE DET SQUELCH DET MOD AUDIO AM SW PC TV MOD SUB WIDE NARROW RSSI RX TX FREQ CONT AF SQ TEMP QX5188VHF RF QX5188VHF RF Sch PLL CLOCK LINE PLL DATA LINE PLL STB ENABLE...

Page 42: ...41 SEG6 42 SEG5 43 SEG4 44 SEG3 45 SEG2 46 SEG1 47 SEG0 48 U3 HT1621M C31 105P R42 47K R43 47K R44 47K R41 47K L6 271T Q4 DTC144EE C39 22P R6 1K 5M 5M VLC0 VLC1 VLC2 VLC0 VLC1 VLC2 URX R68 100K COM0 C...

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