Page 2: Table Of Contents
Radio Overview ……………………………………………………………………………… 3 Software Specifications …………………………………………………………………… 6 Circuit Description ………………………………………………………………………… 16 Semiconductor Data ……………………………………………………………………… 21 TM-800K Parts List 1 ……………………………………………………………………… 28 Tuning Description ………………………………………………………………………… 77 Terminal Function ………………………………………………………………………… 89 Troubleshooting Flow Chart ……………………………………………………………… 92 Disassembly and Assembly for Repair ………………………………………………… 96 Exploded View ………………………………………………………………………………...
Page 3: Introduction
Transmit only when people inside and outside the vehicle are at least the minimum distance away from a properly installed, externally mounted antenna. Mobile antenna substitution: Don’t substitute HYT supplied or approved antenna, or excessive radio frequency radiation will result. Please contact your dealer or the manufacturer for further instructions.
Page 4: Installation Guidelines
TM-800K Service Manual ▇ Operation Guidelines For vehicles equipped with electronic anti-skid braking systems, electronic ignition systems or electronic fuel injection systems, interferences may occur during radio transmission. If the foregoing electronic equipments are installed on your vehicle, please contact your dealer for further assistance to make sure that radio transmission will not interfere with these equipments.
Page 5: Radio Overview
TM-800K Service Manual Radio Overview Front Panel View 1. Programmable Function Keys ( [ PF1 ] through [ PF6 ] ) Your dealer can program these keys as shortcuts to various radio features. 2. Microphone Jack Plug a 6-pin connector into the jack.
Page 6: Lcd Display
TM-800K Service Manual Used when you select channel or transmit selective call etc. 8. Speaker Used to output audio. Microphone LCD Display Indicator Description 1. Display zone / channel number. 2. Display zone / channel alias ( up to 12 alphanumeric characters ).
Page 7: Rear Panel View
TM-800K Service Manual Rear Panel View 1. DB15 Further development interface. 2. DC power jack Used to connect 13.6V DC power. 3. Fuse of DC power 4. Grounding terminal 5. Switch of AC power 6. Fuse of AC power 7. AC power jack...
Page 8: Software Specifications
TM-800K Service Manual Software Specifications Radio Modes Frame of Radio Modes Conventional Mode User Mode Firmware Programming Mode PC Programming Mode Clone Mode Wired Clone Mode Test & Adjust Mode Model Set Mode Keypad Entry for Mode Startup MODE Main Menu...
Page 9 TM-800K Service Manual Error information and measures: Error Information LCD Display Measures Stun status Stun Re-program. Data and Firmware Version Re-program with programming software of right No Data mismatch version. Firmware Programming Mode The built-in FLASH ROM enables user to add new functions simply by upgrading.
Page 10: Test Mode
TM-800K Service Manual Press [ PF2 ] to toggle between Dealer Clone and Factory Clone Mode. “Dealer Clone” or “Factory Clone” appears on the display when the corresponding mode is selected. The radio restores the original display after 5 seconds.
Page 11 TM-800K Service Manual In this mode, the channel frequency ( center, low, high ) can be modified through the programming software. Test frequency channels are shown in the following table: Model RX / TX CH1 ( C ) CH 2 ( L )
Page 12 TM-800K Service Manual Function Description Volume Up Down Volume down Wide/Medium/Narrow band Squelch Open / Close “ ” icon appears when squelch is open. Test Mode / Adjust Mode PF1: enable / disable compandor Activate compandor function PF2: enable / disable clock shift...
Page 13 TM-800K Service Manual In Test Mode, user can press the following key to switch menu modes. Press [ PF3 ] to toggle between Test Mode and Adjust Mode. Press [ PF4 ] to toggle between Adjust Mode and Model Set Mode ( [ PF4 ] is invalid if Model Set Mode is disabled by your dealer.
Page 14 TM-800K Service Manual CDCSS: 023N CDCSS BAL*** CDCSS: 023N High CDCSS BAL*** CDCSS: 023N Medium Center CDCSS BAL*** CDCSS: 023N Center CDCSS BAL*** CDCSS: 023N Narrow CDCSS BAL*** CDCSS: 023N High CDCSS BAL*** Center 67.0 DEV*** CTCSS: 67.0Hz Wide 67.0 DEV*** CTCSS: 67.0Hz...
Page 15 TM-800K Service Manual DTMF DEV *** DTMF: 9 High DTMF DEV *** DTMF: 9 Center MSK DEV *** No signalling Wide MSK DEV *** No signalling High MSK DEV *** No signalling MSK deviation Medium Center MSK DEV *** No signalling...
Page 16 TM-800K Service Manual High CloseSQL9*** No signalling SQL 9 Medium Center CloseSQL9*** No signalling Center CloseSQL9*** No signalling SQL 9 Narrow CloseSQL9*** No signalling High CloseSQL9*** No signalling Center CloseSQL3*** No signalling SQL 3 Wide CloseSQL3*** No signalling High CloseSQL3***...
Page 17 TM-800K Service Manual Turn the Selector Knob to choose model. Press [ PF6 ] to confirm. ”Wait a second…” is displayed. Press [ PF3 ] to return to Test Mode. Notes: Once the new model is set, previous channel settings ( frequency, CTCSS / CDCSS, channel function settings ) will be deleted, and part of functions are also changed.
Page 18: Circuit Description
TM-800K Service Manual Circuit Description Frequency Configuration The receiver utilizes double conversion superheterodyne. The first IF is 49.95MHz (VHF) / 73.05MHz (UHF) and the second is 450 KHz. The first local oscillator signal is supplied by PLL circuit. The second local oscillator signal (73.5MHz) of UHF model is generated from TCXO (73.5MHz);...
Page 19 TM-800K Service Manual RF AMP BPF It consists of BPF (D603, D602, and D601) and RF amplifier (Q601). The range of bandpass frequency (V: 136 MHz - 174MHz, U1: 400 MHz - 470 MHz; U2: 450 MHz - 512MHz; U3: 480 MHz - 526MHz; U4: 440 MHz - 490MHz;...
Page 20 TM-800K Service Manual Transmitter Circuit Figure 2 Transmitter Section Configuration MIC Circuit and Modulation Circuit The AF signal from MIC is amplified by IC104 after passing through the MIC control switch (Q507). The resulting signal is then amplified by IC106 and pre-emphasized, encoded. It is passed to IC121 (electronic switch) before reaching IC125.
Page 21 TM-800K Service Manual The outputted signal is amplified by Q703, Q124, and then divided by PLL IC into 2.5KHz, 5KHz or 6.25KHz signal. The divided signal is compared with 2.5KHz, 5KHz or 6.25KHz reference signal from 16.8MHz crystal oscillator (2.5 PPM frequency stability) in the phase comparator. The frequency control voltage outputted from the phase comparator is sent to TX VCO after passing through LPF (Q804, Q805).
Page 22: Power Supply
TM-800K Service Manual Power Supply Power supply of the radio is derived from the battery which supplies battery B+. D135 and D137 are over-voltage protection Diodes. Power-on/off can be controlled by software. Figure 5 Power Switch Circuit Vout provides power supply to IC115, IC114, IC113, and IC111, which produces 8V, 9V, 5V, and 3.3V voltage to the circuit.
Page 23: Semiconductor Data
TM-800K Service Manual Semiconductor Data 1. Voltage Supply: TA7805F (Display Unit IC501): Providing supply voltage. 2. Voltage Detector: R3111H421C (Display Unit IC502) 2-1. Pin Function Pin No. Name Function Vout Reset. GND. Supply voltage. 3. Display CPU: UPD78F0511GB (Display Unit IC503) 3-1.Pin Function...
Page 24 TM-800K Service Manual OUT1/LED5 RXD1 TXD1 HMBL HOOK/RXD0 TXD0 RLED GLED P120 MicMute 4. Flash ROM: AT29C040-90T1 (TX-RX Unit IC103) 4-1 Pin Function Pin No. Name Function 1-6, 9-20, 31 A18-A0 Flash ROM address bus. Flash ROM write enable. +5V.
Page 25 TM-800K Service Manual 6-1 Pin Function Pin No. Name Function AGNDIN Analog ground input pin. AGND Analog ground output pin. TXIN Transmit audio signal input pin. TXINO TXA1 feedback output pin. LIMLV Limit level adjuster pin. EXTLIMIN External signal input pin pre-limiter pin.
Page 26 TM-800K Service Manual 8. Power amplifier: TDA1554Q (TX-RX Unit IC126) 8-1 Pin Function Pin No. Name Description -INV1 Non-inverting input 1. INV2 Inverting input 2. GND(S) Signal ground. Supply voltage ripple rejection. Supply voltage. OUT1 Output 1. GND1 Power ground 1.
Page 27 TM-800K Service Manual AFSCLK AK2346 serial clock (SCLK) BYTE BYTE +5V(5C) CNVSS CNVSS MIC PA switch control PA: H DACSTB DA conversion strobe output RESET RESET Reset XOUT XOUT Clock output Clock input P85/NMI NMI, usually not use P84/INT2 AFRDF...
Page 28 TM-800K Service Manual Signal select (expansion chip) 50-59 A18-A9 A18-A9 FLASH ROM address bus FLASH ROM address bus 63-70 A7-A0 A7-A0 FLASH ROM address bus 8R power supply control RX: H 8T power supply control TX: H TX/RX VCO switch...
Page 29 TM-800K Service Manual IC107 TA75W558FU Dual operational amplifier IC108 TC75W51FU Dual operational amplifier IC109 NJM4558M Dual operational amplifier IC110 NJM2904V Single-supply dual operational amplifier IC111 XC62FP3302P Positive voltage regulator IC113 TA7805F Positive voltage regulator IC114 TA78L09 Positive voltage regulator IC115...
Page 30: Tm-800K Parts List 1
TM-800K Service Manual TM-800K Parts List 1 TM-800K UHF Parts List 1 Ref. Print Material No. Description Qty. 3001050000000 Chip resistor 0402 0Ω J 1/16W(R R252 R260 3001060000000 Chip resistor 0603 0Ω J 1/10W(R R116 R172 R182 R184 R193 R210...
Page 31 TM-800K Service Manual R443 R446 R447 R451 R470 R471 R473 R474 R475 R476 R477 R478 R479 R480 R481 R482 R483 R484 R485 R486 R496 R497 R501 T10G R502 T10G R504 R506 R508 R603 R609 R817 R821 R823 3001061000000 Chip resistor 0603 10Ω J 1/10W(...
Page 32 TM-800K Service Manual R904 3001061010000 Chip resistor 0603 100Ω J 1/10W R140 R168 R229 R236 R262 R264 R509 3001061020010 Chip resistor 0603 1KΩ J 1/10W( R133 R144 R146 R166 R171 R177 R178 R181 R212 T10M R232 R233 R234 R256 R273...
Page 33 TM-800K Service Manual R205 R213 R214 R240 R261 R285 R286 R287 R291 R326 R356 R371 R380 R392 R605 R806 R807 R808 R902 R903 3001061040010 Chip resistor 0603 100KΩ J 1/10 R104 R108 R127 R129 R179 R188 R203 R215 R277 R304...
Page 34 TM-800K Service Manual R601 R607 R608 R905 3001061220000 Chip resistor 0603 1.2KΩ J 1/10 R343 R810 3001061230000 Chip resistor 0603 12KΩ J 1/10W R298 3001061510000 Chip resistor 0603 150Ω J 1/10W R130 3001061520000 Chip resistor 0603 1.5KΩ J 1/10 R123...
Page 35 TM-800K Service Manual R153 R238 R239 R242 R248 R249 R250 R258 3001062230000 Chip resistor 0603 22KΩ J 1/10W R174 R175 R204 R209 R220 R226 R231 R259 R278 R283 R302 R339 R353 R378 3001062240010 Chip resistor 0603 220KΩ J 1/10 R110...
Page 36 TM-800K Service Manual 3001063330010 Chip resistor 0603 33KΩ J 1/10W R138 R164 R183 R186 R357 R367 R452 3001063340000 Chip resistor 0603 330KΩ J 1/10 R173 R197 R327 3001063920000 Chip resistor 0603 3.9KΩ J 1/10 R225 R602 3001063930010 Chip resistor 0603 39KΩ J 1/10W...
Page 37 TM-800K Service Manual R198 R221 R235 R237 R251 R271 R272 R274 R279 R280 R300 R320 R332 R345 R348 R360 R362 R363 R377 R387 R409 B10J R410 B10K R411 B10K R491 R500 R611 T10C R816 3001064740010 Chip resistor 0603 470KΩ J 1/10...
Page 38 TM-800K Service Manual 3001066820000 Chip resistor 0603 6.8KΩ J 1/10 R222 R224 R255 3001066830000 Chip resistor 0603 68KΩ J 1/10W R101 R295 R322 3001068210010 Chip resistor 0603 820Ω J 1/10W R307 R308 3001068220000 Chip resistor 0603 8.2KΩ J 1/10 R289...
Page 39 TM-800K Service Manual CP126 CP127 CP128 CP129 CP130 CP131 3008162720000 Thin Film Chip Resistor 2010 2.7K 1/2W R814 3101060100010 Chip capacitor 0603 1PF B 50V MU C136 C137 C607 C611 C615 C618 C621 C625 C626 C627 3101060200010 Chip capacitor 0603 2PF B 50V MU...
Page 40 TM-800K Service Manual C124 C135 C224 C239 R132 3101061010010 Chip capacitor 0603 100PF J 50V C106 C109 C147 C203 C205 B10F C206 B10F C207 C208 C303 C388 C446 C448 C628 3101061020000 Chip capacitor 0603 1000PF K 50V C102 C107 C111...
Page 41 TM-800K Service Manual C293 C294 C295 C296 C300 B10G C302 B10G C314 C317 C323 C324 C325 C327 C331 C342 C346 C360 C365 C367 C368 C411 C426 C427 C428 B10J C429 B10J C430 B10J C431 T10E C432 B10J C440 C441 C442...
Page 42 TM-800K Service Manual C459 C801 C812 3101061030010 Chip capacitor 0603 0.01UF K 25V C112 C114 C115 C166 C167 C187 C193 C220 C222 C236 C241 C242 C243 C250 C252 C257 C258 C260 C261 C269 C297 C309 C310 C318 C322 C326 C330...
Page 43 TM-800K Service Manual C215 C216 C233 C234 C235 C262 C267 C277 C279 C280 C329 C333 C339 C340 C343 C345 C363 C394 C417 C425 C466 C469 C471 C472 C474 C624 C903 3101061050000 Chip capacitor 0603 1UF Z 25V MU C101 B10N...
Page 44 TM-800K Service Manual 3101061230000 Chip capacitor 0603 0.012UF K 25 C199 3101061500010 Chip capacitor 0603 15PF J 50V M C132 C134 3101061510000 Chip capacitor 0603 150PF J 50V( C198 3101061530000 Chip capacitor 0603 0.015UF K 50 C276 3101061540000 Chip capacitor 0603 0.15UF K 25V...
Page 45 TM-800K Service Manual C143 C144 C146 C148 C149 C150 C152 C153 C155 C157 C158 C159 C160 C162 C173 C176 C180 C217 T10M C221 C228 C229 C256 C266 C304 C306 C308 C334 C335 C336 C371 C374 C601 C604 C608 C610 C617...
Page 46 TM-800K Service Manual C319 3101064740000 Chip capacitor 0603 0.47UF K 25V C200 C227 T10J C328 C907 3101065610000 Chip capacitor 0603 560PF K 50V( C194 C900 3101066800000 Chip capacitor 0603 68PF J 50V(R C218 C273 C312 C412 C413 3101066830000 Chip capacitor 0603 0.068UF K 16...
Page 47 TM-800K Service Manual L123 L124 3212106220000 Multi-layer chip inductor 0603 22nH HK16082 L120 3212106470000 Multi-layer chip inductor 0603 47nH HK16084 L129 3213212100000 Multi-layer chip inductor 1008 10nH NLV25T- L112 L127 3213212103000 Multi-layer chip inductor 1008 10uH NLV25T- L109 L114 L601...
Page 48 TM-800K Service Manual L126 T10L 3302030500000 Zener diode UDZSTE(1710B)10V D112 3302030500010 Zener diode UDZSTE(1715B)15V D121 3302030500020 Zener diode UDZSTE(1718B)18V D136 3302030500030 Zener diode UDZSTE(175.1B) 5 D107 B10F D108 B10F D113 3303010500040 Switching diode 1SS355(TE17) SOD D109 D117 D118 D130 D131...
Page 49 TM-800K Service Manual 3401002000290 Transistor 2SC4116-GR(T5L.F.H Q116 T10J Q123 Q803 Q804 Q805 Q807 3401002000990 Transistor 2SC5108-Y(TE85L.F) Q124 Q126 3403002000000 Transistor 2SB1132FD5T100R PN Q131 Q132 3403003000000 Transistor 2SC2412K NPN Rohm( Q119 Q121 3403007000000 Transistor DTA114EE(TL) PNP R Q133 3403007000140 Transistor DTA114EKA PNP Rohm...
Page 50 TM-800K Service Manual Q146 3411002000020 Transistor 2SC5343EG NPN AUK Q150 3501030000000 FET 2SJ506STR-E P-cha Q142 3503010000010 FET 2SJ243-T1-A P-cha Q143 3503020000030 FET 2SK1824-T1-A N--c Q102 Q117 Q140 3603002005440 IF processor IC TA31136FNG(EL.H IC119 3604025004350 PLL ADF4111BRUZ 1.2GHz IC801 3605002054590 Operational amplifier TA75W01FU(TE12L.
Page 51 TM-800K Service Manual TC102 3101063000010 Chip capacitor 0603 30PF J 50V M C603 C605 C612 C613 C619 C630 C631 C632 3101073930000 Chip capacitor 0805 0.039UF K 25 C186 3212106569000 Multi-layer chip inductor 0603 5.6nH HK1608 C265 T10M 3001065620000 Chip resistor 0603 5.6KΩ D 1/10...
Page 52 Chip capacitor 1206 3pF C 500V N C421 3101080400010 Chip capacitor 1206 4pF C 500V N C181 3301060400000 Rectifier diode DSM3MA1TRF-E HIT D135 TM-800K VHF Parts List 1 Ref. Print Material No. Description Qty. 3001050000000 Chip resistor 0402 0Ω J 1/16W(R...
Page 53 TM-800K Service Manual R389 B10H R390 R401 R402 R403 R404 R407 R408 R423 R424 R434 R443 R446 R447 R470 R471 R473 R474 R475 R476 R477 R478 R479 R480 R481 R482 R483 R484 R486 R492 T10B R497 R501 T10G R504 R506...
Page 54 TM-800K Service Manual R266 R267 R268 R440 R811 R812 R813 R904 3001061010000 Chip resistor 0603 100Ω J 1/10W R130 R140 R221 R228 R229 R236 R251 R520 3001061020010 Chip resistor 0603 1KΩ J 1/10W( R127 R144 R166 R177 R178 R232 R234...
Page 55 TM-800K Service Manual R238 R239 R240 R242 R248 R249 R250 R259 R260 R261 R285 R286 R287 R311 R326 R356 R371 R372 R380 R392 R806 R807 R808 R902 R903 3001061040010 Chip resistor 0603 100KΩ J 1/10 R108 R171 R179 R203 R215...
Page 56 TM-800K Service Manual R601 R607 R608 R801 R802 R803 3001061050010 Chip resistor 0603 1MΩ J 1/10W( R294 R301 T10B R905 3001061210000 Chip resistor 0603 120Ω J 1/10W R213 3001061220000 Chip resistor 0603 1.2KΩ J 1/10 R343 R810 3001061230000 Chip resistor 0603 12KΩ J 1/10W...
Page 57 TM-800K Service Manual 3001062210000 Chip resistor 0603 220Ω J 1/10W R132 R355 R388 3001062220000 Chip resistor 0603 2.2KΩ J 1/10 R143 R149 R153 R342 3001062230000 Chip resistor 0603 22KΩ J 1/10W R126 R204 R209 R220 R226 R231 R278 R283 R302...
Page 58 TM-800K Service Manual R197 R327 3001063920000 Chip resistor 0603 3.9KΩ J 1/10 R225 3001063930010 Chip resistor 0603 39KΩ J 1/10W R186 R449 R450 R453 3001063940010 Chip resistor 0603 390KΩ J 1/10 R103 3001064700000 Chip resistor 0603 47Ω J 1/10W( R136...
Page 59 TM-800K Service Manual R235 R237 R271 R272 R274 R279 R280 R300 R320 R332 R345 R348 R360 R362 R363 R377 R387 R409 B10K R410 B10K R411 B10K R491 R500 R611 T10C R816 3001064740010 Chip resistor 0603 470KΩ J 1/10 R106 R111...
Page 60 TM-800K Service Manual 3001066820000 Chip resistor 0603 6.8KΩ J 1/10 R222 R224 R255 3001066830000 Chip resistor 0603 68KΩ J 1/10W R101 R295 R322 3001068210010 Chip resistor 0603 820Ω J 1/10W R241 R243 R809 3001068220000 Chip resistor 0603 8.2KΩ J 1/10...
Page 61 TM-800K Service Manual 3101060300010 Chip capacitor 0603 3PF B 50V MU C119 C120 3101060400010 Chip capacitor 0603 4PF B 50V MU C371 3101060500010 Chip capacitor 0603 5PF B 50V MU C301 T10L 3101060590010 Chip capacitor 0603 0.5PF B 50V C171...
Page 62 TM-800K Service Manual C116 C118 C122 C125 C126 C127 C128 C129 C131 C133 C139 C141 C142 C146 C149 C152 C153 C154 C155 T10M C159 C160 C162 C173 C176 C180 C182 C184 C211 C212 C213 C214 C220 C221 C228 C229 C231...
Page 63 TM-800K Service Manual C284 C287 C288 C291 C292 C293 C294 C295 C296 C300 B10G C302 B10G C304 C306 C308 C310 C314 C317 C323 C325 C327 C330 C331 C332 C334 C335 C336 C337 C338 C342 C346 C360 C365 C367 C368 C411...
Page 64 TM-800K Service Manual C447 C449 C450 C451 C452 C453 C455 C456 C458 C459 C601 C608 C622 C725 C801 C802 C803 C804 C812 3101061030010 Chip capacitor 0603 0.01UF K 25V C112 C115 C166 C167 C187 C193 C217 C219 C227 T10J C230...
Page 65 TM-800K Service Manual C341 C344 C347 C361 C377 C604 C610 C617 C623 C909 3101061040010 Chip capacitor 0603 0.1UF K 16V C156 C158 C161 C164 C185 C188 C197 C202 C215 C216 C233 C234 C235 C262 C267 C276 C277 C279 C280 C329...
Page 66 TM-800K Service Manual C624 C815 C903 3101061050060 Chip capacitor 0603 1UF K 10V MU C101 B10N C102 C281 C362 C434 C464 C465 C473 C475 3101061200000 Chip capacitor 0603 12PF J 50V M C151 3101061230000 Chip capacitor 0603 0.012UF K 25...
Page 67 TM-800K Service Manual C612 C613 C619 3101062220010 Chip capacitor 0603 2200PF K 50V C201 3101062230020 Chip capacitor 0603 0.022UF K 25 C283 C313 C316 3101062240000 Chip capacitor 0603 0.22UF K 10V C163 C299 3101062700010 Chip capacitor 0603 27PF J 50V M...
Page 68 TM-800K Service Manual 3101072240000 Chip capacitor 0805 0.22UF K 25V C807 C814 3101073340000 Chip capacitor 0805 0.33UF K 16V C311 3101080400010 Chip capacitor 1206 4pF C 500V N C111 3101080800010 Chip capacitor 1206 8pF D 500V N C117 3101081000010 Chip capacitor 1206 10pF J 500V...
Page 69 TM-800K Service Manual 3303210100000 Switching diode MA4P1250 3*2mm M D124 D127 3304010100390 Varactor 1SV228(TPH6.F)1. D601 D602 D603 3401002000990 Transistor 2SC5108-Y(TE85L.F) Q120 Q124 Q126 3403002000000 Transistor 2SB1132FD5T100R PN Q131 Q132 3604025004350 PLL ADF4111BRUZ 1.2GHz IC801 3605002057290 Operational amplifier TC75W51FU(TE12.F IC108 3605008005120...
Page 70 TM-800K Service Manual L145 L146 L801 3303020100020 Switching diode MA2S11100L SS-Mi D129 D801 3401002000140 Transistor 2SC4215-Y(TE85L,F) Q118 3403003000000 Transistor 2SC2412K NPN Rohm( Q119 Q121 3403007000140 Transistor DTA114EKA PNP Rohm Q135 Q136 Q137 Q141 3403008000010 Transistor DTC114EE(TL) NPN R Q101 Q104...
Page 71 TM-800K Service Manual C373 C396 3103994760080 Electrolytic Capacitor 2512 47UF±20% 25V C376 C401 C408 C409 3503020000030 FET 2SK1824-T1-A N--c Q102 Q117 Q140 3302030500000 Zener diode UDZSTE(1710B)10V D112 3302030500010 Zener diode UDZSTE(1715B)15V D121 3302030500020 Zener diode UDZSTE(1718B)18V D136 3302030500030 Zener diode UDZSTE(175.1B) 5...
Page 72 TM-800K Service Manual 3403007000000 Transistor DTA114EE(TL) PNP R Q133 4001000000130 【wetproof】fuse MINISMDC110F／1 F101 4001000000120 【wetproof】fuse MINISMDC075F／2 F103 B10G 3608002020890 Power managementIC TA7805F(TE16L.F IC113 3607002000180 FLIP-FLOP TC4013BF(EL,N,F IC127 3605008001690 Operational amplifier NJM2904M dual-operation IC110 3605002057090 Operational amplifier TA75S01F(TE85L.F IC116 IC117 3605008005070...
Page 73 TM-800K Service Manual 3104081040020 Tantalum capacitor 1206 0.1UF M 35VTE C808 3002994730080 Trimmer resistor (3.65*3.0*1.5) 47 VR101 3104081050090 Tantalum capacitor 1206 1UF M 16V TEE C393 C901 C902 3104082250040 Tantalum capacitor 1206 2.2UF K 16V T C809 9900000001340 Lead-free solder paste (general) FLY905-T1...
Page 74 TM-800K Service Manual Parts List for TM-800K Front Panel Ref. Print Material No. Description Qty. 3001060000000 Chip resistor 0603 0Ω J 1/10W (RoHS) R505 R506 R511 R522 R548 R555 3001061020010 Chip resistor 0603 1KΩ J 1/10W (RoHS) R532 R533 R534...
Page 75 TM-800K Service Manual 3001061010000 Chip resistor 0603 100Ω J 1/8W (RoHS) 3001061040010 Chip resistor 0603 100KΩ J 1/10W (RoHS) R502 R503 R501 3001061810000 Chip resistor 0603 180Ω J 1/10W (RoHS) R512 R513 3001062230000 Chip resistor 0603 22KΩ J 1/10W (RoHS) 3001062240010 Chip resistor 0603 220KΩ...
Page 76 TM-800K Service Manual 3001065620010 Chip resistor 0603 5.6KΩ J 1/10W (RoHS) R504 3001066820000 Chip resistor 0603 6.8KΩ J 1/10W (RoHS) R558 3001071030000 Chip resistor 0805 10KΩ J 1/8W (RoHS) 3001080000000 Chip resistor 1206 0Ω J 1/4W (RoHS) 3001161010000 Chip resistor 2010 100Ω 1/2W (RoHS)
Page 77 TM-800K Service Manual 3101061050060 Chip capacitor 0603 1uF K 10V (RoHS) C503 C550 3101062200010 Chip capacitor 0603 22pF J 50V (RoHS) C505 C517 3101064710000 Chip capacitor 0603 470PF K 50V (RoHS) C507 C508 3101066800000 Chip capacitor 0603 68P J 50V (RoHS) C518 Tantalum capacitor 1206 4.7UF K 16V...
Page 78 TM-800K Service Manual D502 D503 D504 D514 D516 3409006000000 Transistor KTA1298(Y)/P PNP (RoHS) 3403002000000 Transistor 2SB1132FD5T100R PNP (RoHS) Q501 3403003000060 Transistor 2SC4617TLS NPN (RoHS) Q503 Q504 3403008000010 Transistor DTC114EE (TL) NPN (RoHS) Q502 Q508 3403008000070 Transistor DTC144EE (TL) NPN (RoHS)
Page 79: Tuning Description
TM-800K Service Manual Tuning Description Key Functions Front Panel 1. Programmable Function Keys ( [ PF1 ] through [ PF6 ] ) 2. Microphone Jack 3. Power Switch/Selector Knob 4. LCD Display 5. [ ▲ ] ( Up ) / [ ▼ ] ( Down ) Key 6.
Page 80 TM-800K Service Manual active the following functions (See the table below). Signalling up Signalling down Selector Knob Test channel up/down. When the Function is On (press PF4, ▽ icon appears) Controls Function Description Enable / disable Compandor When Compandor is enabled, ▼ icon appears.
Page 81 TM-800K Service Manual Test Frequency Channel ( MHz ) In this mode, the test channel frequency ( center (C), low (L), high (H) frequency ) can be modified through the programming software. Model RX/TX 1 ( C ) 2 ( L )
Page 82 TM-800K Service Manual Adjust Item LCD Display Frequency stability Frequency TX power Tx Power Max. frequency deviation Max.Deviate CDCSS balance CDCSSBalance CTCSS frequency deviation CTCSSDeviate CDCSS frequency deviation CDCSSDeviate DTMF frequency deviation DTMFDeviate MSK frequency deviation MSK Deviate Single tone frequency deviation...
Page 83 TM-800K Service Manual...
Page 84 TM-800K Service Manual Test Equipment Required for Alignment Test Equipment Method Major Specifications Standard Signal Frequency 136 to 526 MHz Generator (SSG) Modulation Frequency modulation and external modulation Output 0.1uV to greater than 1mV Power Meter Input Impedance 50Ω Operation Frequency...
Page 85 TM-800K Service Manual Warnings When Removing or Installing the Shielding Cover 1. When handling with the shielding cover, do not damage the components on the TX-RX unit. 2. When installing the shielding cover, insert the cover from the rear side.
Page 86 TM-800K Service Manual Adjustment Some items can be adjusted in conventional mode and the others in manual adjust mode. Turn the radio on to enter conventional mode. ● Switch the power off and back on while holding down [ PF6 ], the radio enters manual adjust mode.
Page 87 TM-800K Service Manual Transmitter Measurement Adjustment Specification Item Condition /Remarks Test Instrument Terminal Part Method Enter adjustment Radio Adjust 4. TX item “1”, each Ch Adjust to CH Error Communication software Frequency corresponds to a frequency <50Hz Test Set settings...
Page 88 TM-800K Service Manual Adjust deviation to Each Ch Radio Change 0.75KHz±0.10KHz corresponds to a Communication CDCSS 11. CDCSS specific TX Freq, Test Set settings with 0.60KHz±0.05KHz Deviation enter adjustment FILTER Selector item “6” LPF: 300Hz Knob 0.37KHz±0.05KHz Each Ch Radio...
Page 89 TM-800K Service Manual Adjust L107, Adjust 16. IF TC101, Center Freq is L107.TC101.L151 bandpass filter Scanner L151, 73.05MHz (narrow); L108, (UHF only) L108, TC102, L150 (wide) TC102, and L150. Radio Communication Test Set SSG output: CH: RX Center, turn -47dBm to CH1(C);...
Page 90 TM-800K Service Manual Radio Communication Test Set Enter adjustment SSG output: Press [ PF2 ] to adjust item “13”, turn to CH -70dBm Adjust software settings, 21. RSSI High (C), CH(L), CH (H), MOD:1KHz software once the value is Levle...
Page 91: Terminal Function
TM-800K Service Manual Terminal Function Display Unit Pin No. Name Description J501 (To MIC Jack) MIC backlight control signal output. “H”: On, “L”: Off. Power outputs after power switch (13.6V+15%). Ground. PTT/TXD PTT signal input/ Serial data output. MIC ground.
Page 92 TM-800K Service Manual MIC signal output. Ground. REST Reset signal input. TXD2 Serial data output. RXD2 Serial data input. Ground. Power switch control signal output. Power input after power switch (13.6V+15%). BTL input for remote speaker output. BTL input for remote speaker output.
Page 93 TM-800K Service Manual Ignition sense input. J106 (To Data Encryption and Decryption) RX /TX state indicate “H”: RX ; “L”:TX TXAF_IN TX audio input before audio process (from Option Board to Radio) RXAF_IN RX audio output before audio process (from Option Board to Radio) Ground.
Page 94: Troubleshooting Flow Chart
TM-800K Service Manual Troubleshooting Flow Chart Check Normal Power-on RF circuit can’t Check the alert tone? be driven control circuit Replace Speaker works the speaker well? Read available Check read 9.8304MHz works or not? circuit normally? Reset Q117 works Replace Q117...
Page 95 TM-800K Service Manual Check Normal power Replace Q116 supply? Rx oscillates? And Q706 works Replace Q705 works CV voltage is normal? normal? Q705 normal? Replace Q706 Check Q703 Check Q703 outputs normally? Normal Check Q124 feedback? 16.8MHz Check power oscillates? supply circuit.
Page 96 TM-800K Service Manual No receive Power supply of AF Check power supply IC126 is normal? circuit. Output of electronics Output of Check IC126 volume IC125 is IC126 is normal? normal? FPC & Speaker Output of IC104 is Check IC125 work normally?
Page 97 TM-800K Service Manual No output Power supply Check power works normally? supply circuit Current is Check Q131 & Control voltage is normal? Q110 normal? High Check transistor Bias voltage and low pass network Check driver stage. Repair Driver stage is...
Page 98: Disassembly And Assembly For Repair
TM-800K Service Manual Disassembly and Assembly for Repair Disassembly and assembly of upper cover 1. Remove the 8 countersunk screws ( M3 X6 ) with screwdriver as shown in step ①. See Figure 1. 2. Remove the upper cover in the directon as the arrow shows ( step ② ). See Figure 1.
Page 99 TM-800K Service Manual Disassembly and assembly of power supply 1. Remove the 4 countersunk screws ( M3 X6 ) with screwdriver as shown in step ①. See Figure 3. 2. Remove the power supply in the directon as the arrow shows ( step ② ). Be sure to disconnect all power cables before performing this operation.
Page 100: Exploded View
TM-800K Service Manual Exploded View...
Page 101: Tm-800K Parts List 2
TM-800K Service Manual TM-800K Parts List 2 Material No. Description Qty. 6201668000000 13.8V power supply box 00 (RoHS) selectable TM-800 main unit (for mobile) 3003991040010 Surface temperature sensor 100KΩ ±1% NTC (RoHS) 4210080000700 Speaker cable (with 2Pin connector) (RoHS) 7104006001000 Machine screw M4.0*6.0mm 00(RoHS)
Page 102: Packing
TM-800K Service Manual Packing...
Page 103 TM-800K UHF PCB View Top Layer...
Page 104 TM-800K UHF PCB View Bottom Layer...
Page 105 TM-800K VHF PCB View Top Layer...
Page 106 TM-800K VHF PCB View Bottom Layer...
Page 107 Front Panel PCB View Top Layer...
Page 108 Front Panel PCB View Bottom Layer...
Page 109 VOL level 3.579545MHz MUTE 2T/5T,DTMF AUX8 Reset IC129 AUX8(WDI) Reset IC Reset Q150 HYT Science & Technology Co. Ltd. Error : hyt.jpg file not found. Model Name: Page: Part Name: Date: TM-800K UHF Block Diagram File No.: Rev: Prepare: Check:...
Page 110 VOL level 3.579545MHz MUTE 2T/5T,DTMF AUX8 Reset IC129 AUX8(WDI) Reset IC Q150 Reset HYT Science & Technology Co. Ltd. Error : hyt.jpg file not found. Model Name: Page: Part Name: Date: TM-800K VHF Block Diagram File No.: Rev: Prepare: Check:...
Page 111 TM-800K UHF Schematic Diagram (Tx-Rx Unit) R500 RESET J102 Q150 R455 2SC5343E C474 180K 0.1uF C469 R448 C464 0.1uF 180K to M62364 Audio_out R509 C460 IC130 R446 TXAF_DI C465 to M62364 VI1 DI_MOD_out 4.7u C462 C463 J101 IC129 MAIN JP...
Page 112 TM-800K UHF Schematic Diagram (Frequency Synthesizer Unit) C801 R806 R802 1000P 100K Q801 R824 DTC144EE L801 R801 R803 601S R804 100K Q803 220K 2SC4116 Q806 D802 2.7K D801 R805 2SA1832(GR) R807 R822 C813 2.7K 0.068U C817 MA2S111 R823 C812 C805...
Page 113 TM-800K UHF Schematic Diagram (VCO Unit) L711 R701 R703 D701 C703 C704 C716 470P 470P L704 R704 1SV282 C701 C719 L705 R713 D704 C706 18.5N D702 0.5P R715 C717 C702 220K C711 6P 470P L701 Q703 R712 2SC5108(Y) Q701 R706...
Page 114 TM-800K UHF Schematic Diagram (LNA & BPF Unit) 7.72V R606 L601 10U ： L602 LNA Gain 5dB R605 470N C628 1.53V Text C625 C620 C626 C614 Q601 100P R604 C627 C606 2SC3357 2.7K C609 C608 C601 C607 0.5P 0.5P 0.5P...
Page 115 TM-800K UHF Schematic Diagram (5-Tone Decode Unit) C900 560P R903 10K R901 9.1K C907 C904 AK2346 0.47U R902 AGNDIN TEST AGND RXIN TXIN RXINO C902 C901 TXINO RXLPFO LIMLV RXAF C903 EXTLIMIN RXAFIN 0.1U EXPOUT TCLK TDATA XOUT R905 DI/O...
Page 116 TM-800K UHF Schematic Diagram (Display Unit) K501 K502 K503 K504 K505 K506 K507 K508 IC502 D511 D507 D506 D505 2SB1132(Q.R) R545 R3111H421C-T1 R555 R501 RESET 100 0.5W Vout 100k D512 D510 D509 D508 C501 Q501 0.022uF IC501 L504 TA7805F Vout...
Page 117 TM-800K UHF Schematic Diagram (Display Unit) 2SB1132 R30 470 0.5W R29 470 0.5W R28 470 0.5W R27 470 0.5W 2.7K R7 100 R8 47k 22uF 6.3V 9.1K 220K TL431/A 2.7k 0.01u 1.5K TC4017BF 100P 1.5K 100P /CLK 1.5K 1.5K 1000p...
Page 118 TM-800K VHF Schematic Diagram (Tx-Rx Unit) R500 RESET J102 Q150 R455 2SC5343E C474 180K 0.1uF C469 R448 C464 0.1uF 180K to M62364 Audio_out R509 C460 IC130 R446 TXAF_DI C465 to M62364 VI1 DI_MOD_out 4.7u C462 C463 J101 IC129 MAIN JP...
Page 119 TM-800K VHF Schematic Diagram (Frequency Synthesizer Unit) Frequency Synthesizer Unit C801 R806 R802 1000P 100K Q801 DTC144EE L801 R801 R824 R803 601S R804 100K Q803 100K 2SC4116 Q806 2.7K C813 D801 R805 2SA1832(GR) D802 R807 R822 0.068U 2.7K C812 MA2S111...
Page 120 TM-800K VHF Schematic Diagram (VCO Unit) VCO Unit 1SV282 R701 R703 D701 Q701 C703 C704 2SK508NV(K52) L704 R704 1SV282 1000P 1000P C701 C702 100N L701 D704 C706 3.3U C716 C719 R715 R713 220K C711 15P 1000P TC701 C717 Q703 2SC5108(Y)
Page 121 TM-800K VHF Schematic Diagram (LNA and BPF Unit) LNA and BPF Unit L601 R606 L602 R604 4.7K C620 C616 C614 Q601 C606 2SC3357 C609 C608 C601 L603 150P C607 RFOUT RFIN C615 C602 1000P 1000P D603 R602 1SV228 D601 R603...
Page 122 TM-800K VHF Schematic Diagram (Decode Unit) 5Tone Decode Unit C900 560P R903 10K R901 9.1K C907 C904 AK2346 0.47U R902 AGNDIN TEST AGND RXIN TXIN RXINO C902 C901 TXINO RXLPFO LIMLV RXAF C903 EXTLIMIN RXAFIN 0.1U EXPOUT TCLK TDATA XOUT...
Page 123 TM-800K VHF Schematic Diagram (Display Unit) K501 K502 K503 K504 K505 K506 K507 K508 IC502 D511 D507 D506 D505 2SB1132(Q.R) R545 R3111H421C-T1 R555 R501 RESET 100 0.5W Vout 100k D512 D510 D509 D508 C501 Q501 0.022uF IC501 L504 TA7805F Vout...
Page 124 TM-800K VHF Schematic Diagram (Display Unit) 2SB1132 R30 470 0.5W R29 470 0.5W R28 470 0.5W R27 470 0.5W 2.7K R7 100 R8 47k 22uF 6.3V 9.1K 220K TL431/A 2.7k 0.01u 1.5K TC4017BF 100P 1.5K 100P /CLK 1.5K 1.5K 1000p...
Page 125: Specifications
TM-800K Service Manual Specifications General VHF: 136-174 MHz UHF: 350-400 MHz 400-470 MHz Frequency Range 440-490 MHz 450-512 MHz 450-520 MHz 480-526 MHz Channel Capacity Channel Spacing 25/20/12.5 KHz Operating Voltage 10.8-15.6V Standby <0.6A Current Receive <2.0A Drain Transmit <8.0A...
Page 126: Appendix 1 Entering Characters
TM-800K Service Manual Appendix 1 Entering Characters Entering characters with an optional microphone keypad CHARACTER Number of times key is pressed NUMBER REMARKS Space Each key can generate numeric and character information. Pressing a key will cause the first character of the key’s character cycle to appear on the LCD;...
Page 127 HYT endeavors to achieve the accuracy and completeness of this manual, but no warranty of accuracy or reliability is given. All the specifications and design are subject to change without prior notice due to continuous technology development. Changes which may occur after publication are highlighted by Revision History contained in Service Manual.