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TC-265/365 SERVICE MANUAL
Contents
R e v i s i o n H i s t o r y ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1
G e n e r a l ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 3
R a d i o O v e r v i e w . . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 3
R a d i o M o d e s ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 5
C i r c u i t D e s c r i p t i o n ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1 3
C P U P i n s ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1 9
T C - 2 6 5 P a r ts L i s t 1 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 2 1
T C - 3 6 5 P a r ts L i s t 1 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 3 6
A d j u s t m e n t D e s c r i p t i o n ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 5 5
D i s a s s e m b l y f o r R e pa i r ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 5 8
E x p l o d e d V i e w ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 5 9
T C - 2 6 5 / 3 6 5 P a r ts L i s t 2 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 6 0
P a c k i n g ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 6 2
T C - 2 6 5 P C B o a r d V i e w ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 6 3
T C - 3 6 5 P C B o a r d V i e w ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 6 5
T C - 2 6 5 S c h e m a t i c D i a g r a m ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 6 7
T C - 3 6 5 S c h e m a t i c D i a g r a m ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 6 8
S p e c i f i c a t i o n s ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 6 9
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Summary of Contents for HYT TC-265

  • Page 1: Table Of Contents

    TC-265/365 SERVICE MANUAL Contents R e v i s i o n H i s t o r y … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … 1 G e n e r a l …...
  • Page 2: Revision History

    TC-265/365 SERVICE MANUAL Revision History Date Revision 2004.6 8130026500010 2006.10 IC302 is changed from TA7368F to KIA6278F; Q203/Q203 is changed from 3SK320 to 3SK318; Q102 is changed from 2SK2596 to RD01; Q105 is changed from 2SK2595 to RD07. Changes also be made on the corresponding peripheral circuits.
  • Page 3: General

    Do not modify the radio for any reason. Use only HYT original batteries and chargers. Use only the supplied or an approved antenna. Do not use any portable radio that has a damaged antenna. If a damaged antenna comes into contact with your skin, a minor burn can result.
  • Page 4: Radio Overview

    TC-265/365 SERVICE MANUAL Radio Overview 1. Mode User mode: Turn on the radio to enter the mode. PC mode:Set and adjust radio data with PC software or programmer in this mode. 2. Parts description: (1) Antenna (2) Channel Selector Knob Turn the selector knob to select channels 1-S (channel S can be programmed by dealer as scan function).
  • Page 5 TC-265/365 SERVICE MANUAL Indicates: Red LED glows Transmitting Red LED flashes Low battery Green LED glows Monitoring or receiving Orange LED glows Transmitting 2-Tone/5-Tone signaling Orange LED flashes 2-Tone/5-Tone standby (4) Radio On-Off/Volume Control Knob Rotate the knob clockwise to turn the radio on, rotate the knob fully counter-clockwise until a “click” is heard to turn the radio off.
  • Page 6: Radio Modes

    TC-265/365 SERVICE MANUAL Radio Modes 1. Frame of Radio Modes Select the function from the modes and make settings according to your needs. User Mode Conventional Mode PC Mode Dealer Mode All Reset Mode Manual Adjust Mode Wired Clone Mode 2.
  • Page 7 TC-265/365 SERVICE MANUAL 3. Keyboard Entry for Mode Startup Mode Remarks User Mode Conventional Turn the radio on to enter Power on Mode conventional mode. Connect the radio with PC You can program the radio via PC Mode through interface cable.
  • Page 8 TC-265/365 SERVICE MANUAL 5.2 Manual Adjust Mode In this mode, the factory or the dealer can adjust the radio parameters in menu mode. Operation: Turn the radio on while holding down the [PTT], three beeps sound after 2 seconds and green LED flashes.
  • Page 9 5.8V. Press [PTT]/[MONI] so that red LED flashes. Note: 1. TC-265/365 radio has 16 channels. Every four adjacent channels is a group. There are four groups and they are marked as group 0, group 1, group 2 and group 3 respectively. The channel frequency of each group is arranged as center, low, high and center frequency.
  • Page 10 TC-265/365 SERVICE MANUAL Function Setting: Function Function Setting (Defaults are Display Remarks Name underlined) Monitor Disable Monitor Momentary AF channel opens when [MONI] is held down. Monitor Lock Squelch opens when [MONI] is held down. Switches each time [MONI] is held down.
  • Page 11 TC-265/365 SERVICE MANUAL Priority + It’s priority channel during scan; It’s the Last Stopped channel where scan is stopped during scan. Assignment + It’s the assignment channel during scan; It’s Last Stopped the channel where scan is stopped during scan.
  • Page 12 TC-265/365 SERVICE MANUAL 5.4 PC Adjust Mode The following parameters can be adjusted through PC (only for factory adjustment): Adjustment data; Maintenance record. 5.5 Wired Clone Mode Turn the radio on while holding down the [MONI], after two seconds, a beep sounds and red LED flashes indicating that the radio enters wired clone mode.
  • Page 13 TC-265/365 SERVICE MANUAL 6. Appendix: Initial data table Model Frequency Center IF (MHz) 1CH (C) 2CH (L) 3CH (H) 4CH (C) Range (MHz) Frequency (MHz) Rx (MHz) Tx (MHz) Rx (MHz) Tx (MHz) Rx (MHz) Tx (MHz) Rx (MHz) Tx (MHz) TC-265 (1) 136.000-150.000...
  • Page 14: C I R C U I T D E S C R I P T I O

    2. Receiver The receiver employs double conversion superheterodyne. 1-a) Front end RF amplifier (TC-265) The input signal of antenna is applied to an RF amplifier (Q203) after passing through a transmit/receive switch circuit and a 3-stage low pass filter. The amplified signal is filtered through a band pass filter (a 3-stage LC filter) to eliminate unwanted signal before it is applied to the first mixer.
  • Page 15 3) IF amplifier The first IF signal is amplified by Q201(TC-265) /Q124 (TC-365) , and then enters IF processing IC. The signal is heterodyned again with a second local oscillator signal within IF processing IC to create a 450KHz second IF signal. The second IF signal is then fed through a 450KHz ceramic filter to further eliminate unwanted signals before it is amplified and FM detected in IC200(TC-265)/IC10...
  • Page 16 MUTE and AFCO and the speaker sounds output according to the squelch results. 2-Tone/5-Tone IF processing IC output signal is filtered by IC9(TC-265)/IC14(TC-365)and then applied to the microprocessor. MCU compares TTS with the preset value and controls MUTE and AFCO and speaker output according to squelch results.
  • Page 17 VCO control voltage, which is obtained from the phase comparator to the varactor diodes. The T/R pin is set high in receive mode causing Q5 and Q7 to turn Q4 off, and turn Q3 on(TC-265)/Q140 and Q138 to turn Q141 off, and turn Q142 on(TC-365). The T/R pin is set low in transmit mode. The outputs are amplified by Q6(TC-265)/Q139(TC-365)...
  • Page 18 3) 2-Tone/5-Tone encoder The necessary signal for 2-Tone/5-Tone encoding is generated by MCU. The signal is sent to IC500(TC-265)/IC1(TC-365)(2/2), and then applied to 3KHz low-pass filter. The resulting signal is applied to VCO for direct modulation (See fig. 6). PRE EMPHASIS...
  • Page 19 The transmit/receive switching circuit is comprised of D100, D200 and D101. D102 and D103 (TC-265) / D108, D112 and D111. D109 and D110 (TC-365) is turned on (conductive) in transmit mode and off (isolated) in receive mode.
  • Page 20: C P U P I N

    TC-265/365 SERVICE MANUAL CPU Pins CPU control M38034M4 Pin No. Port name Function CTCSS/CDCSS input BUSY Input busy signal BATT Detect battery voltage Output CTCSS/CDCSS BEEP Beep output ENC0 Input encode ENC1 Input encode ENC2 Input encode ENC3 Input encode...
  • Page 21 TC-265/365 SERVICE MANUAL AF signaling encode output TX: APC output RX: BPF tune output CPU power supply 5V VREF Connect with VCC AVSS Connect with VSS FCPY Factory clone L: model set MODE Additional mode L: enable TIBI CTCSS/CDCSS exterior circuit central input -...
  • Page 22: Part List

    TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3001050000000 Chip resistor 0402 0Ω J 1/16W R291 3001050000000 Chip resistor 0402 0Ω J 1/16W R327 3001050000000 Chip resistor 0402 0Ω J 1/16W R404 3001050000000 Chip resistor 0402 0Ω J 1/16W R431 3001050000000 Chip resistor 0402 0Ω...
  • Page 23 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3001051040010 Chip resistor 0402 100KΩ J 1/ R401 3001051040010 Chip resistor 0402 100KΩ J 1/ R408 3001051040010 Chip resistor 0402 100KΩ J 1/ R533 3001051050020 Chip resistor 0402 1MΩ J 1/16 R142 3001051050020 Chip resistor 0402 1MΩ...
  • Page 24 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3001053930000 Chip resistor 0402 39KΩ J 1/1 R607 3001054710000 Chip resistor 0402 470Ω J 1/1 R535 3001054720000 Chip resistor 0402 4.7KΩ J 1/ R119 3001054720000 Chip resistor 0402 4.7KΩ J 1/ R416 3001054720000 Chip resistor 0402 4.7KΩ...
  • Page 25 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3001060000000 Chip resistor 0603 0Ω J 1/10W R232 3001060000000 Chip resistor 0603 0Ω J 1/10W R240 3001060000000 Chip resistor 0603 0Ω J 1/10W 3001060000000 Chip resistor 0603 0Ω J 1/10W 3001060000000 Chip resistor 0603 0Ω...
  • Page 26 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3001061040010 Chip resistor 0603 100KΩ J 1/ R207 3001061040010 Chip resistor 0603 100KΩ J 1/ 3001061040010 Chip resistor 0603 100KΩ J 1/ R226 3001061040010 Chip resistor 0603 100KΩ J 1/ R230 3001061040010 Chip resistor 0603 100KΩ...
  • Page 27 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3001062710000 Chip resistor 0603 270Ω J 1/1 R127 3001062710000 Chip resistor 0603 270Ω J 1/1 R128 3001062710000 Chip resistor 0603 270Ω J 1/1 3001062710000 Chip resistor 0603 270Ω J 1/1 3001062720000 Chip resistor 0603 2.7KΩ...
  • Page 28 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3001065620010 Chip resistor 0603 5.6KΩ J 1/ R301 3001065620010 Chip resistor 0603 5.6KΩ J 1/ R302 3001065620010 Chip resistor 0603 5.6KΩ J 1/ R324 3001065620010 Chip resistor 0603 5.6KΩ J 1/ R326 3001065630000 Chip resistor 0603 56KΩ...
  • Page 29 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3101051020010 Chip capacitor 0402 1000PF K 5 C404 3101051020010 Chip capacitor 0402 1000PF K 5 C407 3101051020010 Chip capacitor 0402 1000PF K 5 C410 3101051020010 Chip capacitor 0402 1000PF K 5...
  • Page 30 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3101053920000 Chip capacitor 0402 3900PF K 2 C502 3101053920000 Chip capacitor 0402 3900PF K 2 C701 3101054710010 Chip capacitor 0402 470PF K 50 C132 3101054710010 Chip capacitor 0402 470PF K 50...
  • Page 31 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3101061000000 Chip capacitor 0603 10PF J 50V C202 3101061000000 Chip capacitor 0603 10PF J 50V C215 3101061000000 Chip capacitor 0603 10PF J 50V 3101061000000 Chip capacitor 0603 10PF J 50V...
  • Page 32 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3101061020000 Chip capacitor 0603 1000PF K 5 3101061020000 Chip capacitor 0603 1000PF K 5 3101061020000 Chip capacitor 0603 1000PF K 5 3101061020000 Chip capacitor 0603 1000PF K 5...
  • Page 33 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3101061040010 Chip capacitor 0603 0.1UF K 16 C322 3101061040010 Chip capacitor 0603 0.1UF K 16 3101061040010 Chip capacitor 0603 0.1UF K 16 C522 3101061040010 Chip capacitor 0603 0.1UF K 16...
  • Page 34 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3101063000010 Chip capacitor 0603 30PF J 50V C234 3101063300000 Chip capacitor 0603 33PF J 50V 3101063300000 Chip capacitor 0603 33PF J 50V 3101063310000 Chip capacitor 0603 330PF J 50...
  • Page 35 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3213212561000 Multi-layer inductor 1008 0.56uH NLV L200 3213212561000 Multi-layer inductor 1008 0.56uH NLV L215 3214412751000 Inductor 1008 0.75uH C2520 L204 3213212821000 Multi-layer inductor 1008 0.82uH NLV L201 3221506601000 Chip ferriter bead 0603 600Ω±25...
  • Page 36 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3303020100020 Switching diode MA2S11100L SS- 3303020100070 Switching diode MA2Z07700L SOD D101 3303020100080 Switching diode MA2S07700L 1.7 D100 3303020100080 Switching diode MA2S07700L 1.7 D102 3303020100080 Switching diode MA2S07700L 1.7 D103 3303020100080 Switching diode MA2S07700L 1.7...
  • Page 37 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3403009000010 Transistor UMG3N(N-TR) NPN Q407 3503040000010 FET UPA672T-T1-A N- Q405 3499000000170 Transistor UFMMT591 PNP SOT Q406 3499000000170 Transistor UFMMT591 PNP SOT Q409 3499000000180 Transistor UFMMT717 PNP SOT...
  • Page 38 TC-265/365 SERVICE MANUAL Part List 1 TC-265 Part List 1 Material No. Description Ref.No. Address 3104071060010 Ta-capacitor 0805 10UF M 6.3V C200 3104071060010 Ta-capacitor 0805 10UF M 6.3V 3104071060010 Ta-capacitor 0805 10UF M 6.3V C304 3104071060010 Ta-capacitor 0805 10UF M 6.3V C307 3104071060010 Ta-capacitor 0805 10UF M 6.3V...
  • Page 39 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address R105 3001050000000 Chip resistor 0402 0Ω J 1/16W R141 3001050000000 Chip resistor 0402 0Ω J 1/16W R149 3001050000000 Chip resistor 0402 0Ω J 1/16W R150 3001050000000 Chip resistor 0402 0Ω...
  • Page 40 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address R401 3001051030000 Chip resistor 0402 10KΩ J 1/1 R402 3001051030000 Chip resistor 0402 10KΩ J 1/1 R611 3001051030000 Chip resistor 0402 10KΩ J 1/1 R143 3001051040010 Chip resistor 0402 100KΩ...
  • Page 41 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address R114 3001053330010 Chip resistor 0402 33KΩ J 1/1 R123 3001053330010 Chip resistor 0402 33KΩ J 1/1 R124 3001053330010 Chip resistor 0402 33KΩ J 1/1 R125 3001053330010 Chip resistor 0402 33KΩ...
  • Page 42 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address R112 3001058230000 Chip resistor 0402 82KΩ J 1/1 3001060000000 Chip resistor 0603 0Ω J 1/10W R203 3001060000000 Chip resistor 0603 0Ω J 1/10W R229 3001060000000 Chip resistor 0603 0Ω J 1/10W 3001060000000 Chip resistor 0603 0Ω...
  • Page 43 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address R517 3001061040010 Chip resistor 0603 100KΩ J 1/ R520 3001061040010 Chip resistor 0603 100KΩ J 1/ R533 3001061040010 Chip resistor 0603 100KΩ J 1/ 3001061040010 Chip resistor 0603 100KΩ J 1/ 3001061040010 Chip resistor 0603 100KΩ...
  • Page 44 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address 3001062720000 Chip resistor 0603 2.7KΩ J 1/ R102 3001062720000 Chip resistor 0603 2.7KΩ J 1/ R508 3001062720000 Chip resistor 0603 2.7KΩ J 1/ 3001062720000 Chip resistor 0603 2.7KΩ J 1/ 3001062740000 Chip resistor 0603 270KΩ...
  • Page 45 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address R506 3001065610000 Chip resistor 0603 560Ω J 1/1 R246 3001065620000 Chip resistor 0603 5.6KΩ D 1/ 3001065620000 Chip resistor 0603 5.6KΩ D 1/ 3001065620000 Chip resistor 0603 5.6KΩ D 1/ 3001065620000 Chip resistor 0603 5.6KΩ...
  • Page 46 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address C118 3101051030020 Chip capacitor 0402 0.01UF K 2 C403 3101051030020 Chip capacitor 0402 0.01UF K 2 3101051030020 Chip capacitor 0402 0.01UF K 2 3101051030020 Chip capacitor 0402 0.01UF K 2 3101051030020 Chip capacitor 0402 0.01UF K 2...
  • Page 47 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address C216 3101054710010 Chip capacitor 0402 470PF K 50 C221 3101054710010 Chip capacitor 0402 470PF K 50 C235 3101054710010 Chip capacitor 0402 470PF K 50 C238...
  • Page 48 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address 3101060590010 Chip capacitor 0603 0.5PF B 50 3101060590010 Chip capacitor 0603 0.5PF B 50 C533 3101060590010 Chip capacitor 0603 0.5PF B 50 C542 3101060590010 Chip capacitor 0603 0.5PF B 50...
  • Page 49 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address 3101061030010 Chip capacitor 0603 0.01UF K 2 3101061030010 Chip capacitor 0603 0.01UF K 2 3101061030010 Chip capacitor 0603 0.01UF K 2 3101061040010 Chip capacitor 0603 0.1UF K 16 3101061040010 Chip capacitor 0603 0.1UF K 16...
  • Page 50 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address C523 3101063300000 Chip capacitor 0603 33PF J 50V C530 3101063300000 Chip capacitor 0603 33PF J 50V C514 3101063310010 Chip capacitor 0603 330PF K 50 3101063330030 Chip capacitor 0603 0.033UF K 3101063330030 Chip capacitor 0603 0.033UF K...
  • Page 51 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address C507 3101064710000 Chip capacitor 0603 470PF K 50 C520 3101064710000 Chip capacitor 0603 470PF K 50 C522 3101064710000 Chip capacitor 0603 470PF K 50 C539...
  • Page 52 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address 3213212331000 Multi-layer inductor 1008 330nH NLV2 3213212561000 Multi-layer inductor 1008 0.56uH NLV 3213306332000 Multi-layer inductor 0603 3.3uH MLF1 3213306332000 Multi-layer inductor 0603 3.3uH MLF1 3213306332000 Multi-layer inductor 0603 3.3uH MLF1...
  • Page 53 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address 3102992000000 Trimmer capacitor 3.2*2.5*1.25mm 3005061020010 Resistor array 0603 1KΩ*4 J 1/1 3102992000040 Trimmer capacitor 3.2*2.5*1.25mm 1 VR100 3002994730020 Trimmer resistor 3*3mm 47KΩJ 0.1 3210306101000 Multi-layer inductor 0603 100nH LQG1...
  • Page 54 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address D115 3303020100020 Switching diode MA2S11100L SS- Q141 3404002000000 Transistor PRF957 NPN PHILI Q134 3406001000090 Transistor 2SC4988FRTR-E NP Q101 3411002000020 Transistor 2SC5343EG NPN AU Q102 3411002000020 Transistor 2SC5343EG NPN AU...
  • Page 55 TC-265/365 SERVICE MANUAL Part List 1 TC-365 Part List 1 Material No. Description Ref.No. Address Q111 3403008000070 Transistor DTC144EE(TL) NPN Q116 3403008000070 Transistor DTC144EE(TL) NPN Q118 3403008000070 Transistor DTC144EE(TL) NPN Q106 3403009000010 Transistor UMG3N(N-TR) NPN Q110 3403009000010 Transistor UMG3N(N-TR) NPN...
  • Page 56: A D J U S T M E N T D E S C R I P T I O

    Please refer to “5.1 All Reset Mode” in “Radio Modes” for more details. 2. Adjustment: TC-265/365 can be adjusted by manual adjust mode or through PC programming software. The following table describes the adjustment details of manual adjust mode. 3. Manual Adjust Mode...
  • Page 57 TC-265/365 SERVICE MANUAL output: Adjust TC-201, Wideband: TC-202 and Adjust undee at the -119dBm TC-201 TC-203 at scanner to the top MOD: TC-202 center, low and Frequency with proper Wideband/ 1.0KHz TC-203 high frequency. scanner bandwidth. The narrowband at DEV:...
  • Page 58 TC-265/365 SERVICE MANUAL Adjust at center, high frequency. Adjust wideband (upward) group MONI narrowband Difference (down- group Wideband: CDCSS ward) 7.CDCSS CDCSS is +023. Communication 0.75KHz±50Hz deviation deviation Save the value. analyzer center, low and (Adjust LPF: 300Hz Narrowband: high...
  • Page 59: D I S A S S E M B L Y F O R R E Pa I

    TC-265/365 SERVICE MANUAL Disassembly for Repair Remove the case assembly from the chassis 1. Remove the two knobs ① and three ring nuts ②. 2. Remove the two screws ③. 3. Expand the right and left sides of the bottom of the case assembly, lift the chassis, and remove it from the case assembly.
  • Page 60 TC-265/365 SERVICE MANUAL Exploded View - -...
  • Page 61 TC-265/365 SERVICE MANUAL TC-265/365 Parts List 2 Material No. Description Antenna 6000158000040 Volume knob 04(RoHS) 6000160000040 Volume knob 04(RoHS) 7207001200000 Nut 00 (RoHS) 6201006000000 Knob inner liner 0.25mm 00 (RoHS) 7206002000000 Nut M6.0*2.0mm 00 (RoHS) 6000163000000 Light-guide pip 00 (RoHS)
  • Page 62: E X P L O D E D V I E

    TC265/365 SERVICE MANUAL 5001010000020 Speaker 426539(036S23) 4Ω 0.5W D:36mm (RoHS) 6100078000000 Speaker gasket 00 (RoHS) 7400065000010 Grill cloth 01(RoHS) 6000112100010 Battery latch PC+ABS1200HF 01(RoHS) 6201060000000 Battery latch metal sheet 00 (RoHS) 7000030000010 Battery latch spring 01(RoHS) 6000147000060 Radio unit front case 06(RoHS) 6100085000010 PTT key 01(RoHS) 6000157000000...
  • Page 63: P A C K I N

    TC265/365 SERVICE MANUAL Packing Owner's Manual Wrist Strap Belt Clip Main Unit Charger Antenna Battery Adapter Package Lining Package Box - -...
  • Page 68: T C - 2 6 5 S C H E M A T I C D I A G R A

    TC-265 Schematic Diagram TC-265 Schematic Diagram C140 C144 C147 7.2V R715 2SC5108(Y) L111 MA2Z077 C137 Q105 C131 L114 L115 L117 AT24C16 470p C705 7.5V RD07 L110 R716 Q102 R118 C116 L107 470p D101 1000p T:1V 100p R:1.3V RD01 POUT 3.8V C706 4.9V...
  • Page 69: T C - 3 6 5 S C H E M A T I C D I A G R A

    TC-365 Schematic Diagram TC-365 Schematic Diagram 1.5P C208 C206 C204 C520 Q143 7.2V 100P D111 ANTENNA SW 2SC5108(Y) Q129 R226 C217 MA77 C211 R311 470p C546 7.5V 1000p L120 RD07 1.5P Q131 C232 470p 3p(B) T:1V *L20 C309 IC14 470p 4.8V R534 RD01...
  • Page 70: S P E C I F I C A T I O N

    TC265/365 SERVICE MANUAL Specifications General TC-265 : 146~174 Frequency Range (MHz) TC-365 : 440~470 Channel Capacity Channel Spacing (KHz) 25(W)/ 12.5(N) Antenna Impedance (Ω) Microphone Impedance (KΩ) Operating Voltage (V) Frequency Stability (ppm) ≤±2.5 Transmitter RF Power Output 5 (UHF)/4 (VHF) Modulation Sensitivity (mV) 12±3...

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