Kenwood TK 980 Service Manual

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2 TK-980/ 981 GENERAL INTRODUCTION SCOPE OF THIS MANUAL This manual is intended for use by experienced techni- cians familiar with similar types of commercial grade com- munications equipment. It contains all required service in- formation for the equipment and is current as of the publica- tion date. Changes which may occur after publication are covered by either Service Bulletins or Manual Revisions, which are issued as required. ORDERING REPLACEMENT PARTS When ordering replacement parts or equipment informa- tion, the full part identification number should be included. This applies to all parts : components, kits, and chassis. If the part number is not known, include the chassis or kit number of which it is a part, and a sufficient description of the required component for proper identification. PERSONNEL SAFETY The following precautions are recommended for person- nel safety : - DO NOT transmit if someone is within two feet (0.6 meter) of the antenna. - DO NOT transmit until all RF connectors are secure and any open connectors are properly terminated. - SHUT OFF and DO NOT operate this equipment near electrical blasting caps or in an explosive atmosphere. - All equipment should be properly grounded before power-up for safe operation. - This equipment should be serviced by only qualified technicians. PRE-INSTALLATION CONSIDERNATIONS 1. UNPACKING Unpack the radio from its shipping container and check for accessory items. If any item is missing, please contact KENWOOD immediately. 2. LICENSING REQUIREMENTS Federal regulations require a station license for each ra- dio installation (mobile or base) be obtained by the equip- ment owner. The licensee is responsible for ensuring trans- mitter power, frequency, and deviation are within the limits permitted by the station license. Transmitter adjustments may be performed only by a li- censed technician holding an FCC first, second or general class commercial radiotelephone operators license. There is no license required to install or operate the radio. 3. PRE-INSTALLATION CHECKOUT 3-1. Introduction Each radio is adjusted and tested before shipment. How- ever, it is recommended that receiver and transmitter op- eration be checked for proper operation before installation. 3-2. Testing The radio should be tested complete with all cabling and accessories as they will be connected in the final installa- tion. Transmitter frequency, deviation, and power output should be checked, as should receiver sensitivity, squelch operation, and audio output. QT equipment operation should be verified. 4. PLANNING THE INSTALLATION 4-1. General Inspect the vehicle and determine how and where the radio antenna and accessories will be mounted. Plan cable runs for protection against pinching or crush- ing wiring, and radio installation to prevent overheating. 4-2. Antenna The favored location for an antenna is in the center of a large, flat conductive area, usually at the roof center. The trunk lid is preferred, bond the trunk lid and vehicle chassis using ground straps to ensure the lid is at chassis ground. 4-3. Radio The universal mount bracket allows the radio to be mounted in a variety of ways. Be sure the mounting surface is adequate to support the radios weight. Allow sufficient space around the radio for air cooling. Position the radio close enough to the vehicle operator to permit easy access to the controls when driving. 4-4. DC Power and wiring 1. This radio may be installed in negative ground electrical systems only. Reverse polarity will cause the cable fuse to blow. Check the vehicle ground polarity before installa- tion to prevent wasted time and effort. 2. Connect the positive power lead directly to the vehicle battery positive terminal. Connecting the Positive lead to any other positive voltage source in the vehicle is not rec- ommended. CAUTION If DC power is to be controlled by the vehicle ignition switch, a switching relay should be used to switch the posi- tive power lead. The vehicle ignition switch then controls DC to the relay coil. 3. Connect the ground lead directly to the battery negative terminal. 4. The cable provided with the radio is sufficient to handle the maximum radio current demand. If the cable must be extended, be sure the additional wire is sufficient for the current to be carried and length of the added lead.

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3 TK-980/981 1 3 + -� 7 6 13 15 5. INSTALLATION PLANNING -� CONTROL STATIONS 5-1. Antenna system Control station. The antenna system selection depends on many factors and is beyond the scope of this manual. Your KENWOOD dealer can help you select an antenna sys- tem that will best serve your particular needs. 5-2. Radio location Select a convenient location for your control station radio which is as close as practical to the antenna cable entry point. Secondly, use your systems power supply (which supplies the voltage and current required for your system). Make sure sufficient air can flow around the radio and power supply to allow adequate cooling. SERVICE This radio is designed for easy servicing. Refer to the schematic diagrams, printed circuit board views, and align- ment procedures contained in this manual. Note When you modify your radio as described in system set- up, take the following precaution. The rating of pin 7 (SB) of the accessory connector cable (KCT-19) on the rear of the radio is 13.6V (1A). Insert a 1A fuse if you use the SB pin for external equipment. Accessory connector cable (KCT-19) If you do not intend to use the 3.5-mm jack for the exter- nal speaker, fit the supplied speaker-jack cap (B09-0235-05) to stop dust and sand getting in. GENERAL / OPERATING FEATURES Speaker-jack cap (B09-0235-05) 1. Operation Features The TK-980/981 is an 800MHz/900MHz band EFJ LTR-�� - compatible trunked radio designed to operate in both trunking and conventional modes. The programmable fea- tures are summarized. This model can handle up to 32 systems with up to 250 groups in each system. The transceiver can be used in both trunked mode and conventional mode. Systems, groups, and their functions are programmed. 2. Transceiver Controls and Indicators (Fig. 1) 2-1. Front Panel Controls All the keys on the front panel are momentary-type push buttons. The functions of these keys are explained below. -POWER key Transceiver POWER key. When the power is switched off, all the parameters, such as the system and group are stored in memory. When the power is switched on again, the transceiver returns to the previous conditions. -SYSTEM UP/DOWN key (Programmable) -SCAN key (Programmable) -MONITOR key (Programmable) -A, B, C and D key (Programmable) -VOLUME UP/DOWN key (Programmable) -BUSY/TX LED The BUSY indicator (Green LED) shows that the group is in use. The TX indicator (Red LED) shows that you are trans- mitting. 2-2. Programmable Keys The FPU (KPG-49D) enables programmable keys to se- lect the following functions. Auto tel, AUX-A, AUX-B (Only when voice scrambler is not selected), DTMF ID (BOT), DTMF ID (EOT), Display char- acter, Emergency (Only foot key), Function, Group down, Group up, Home group, Horn alert, Key lock, Memory (RCL/ STO), Memory (RCL), Memory (STO), Message mode (Only A key), Monitor A, Monitor B, Monitor C, Monitor D, Public address, Redial, Scan, Scan del/add, Scan temporary delete, Scrambler (Only when voice scrambler is selected), Send GPS, System down, System up, TEL disconnect, Volume down, Volume up and None. These functions the FPU programs to the function keys and described in the following sections. -Auto TEL Automatically connects available repeaters that are con- nected to telephone circuits when operating as LTR system. The time allocated to search for available repeaters is 60 seconds, after which connection failure occurs, a DTMF tone is output and the function terminates. If connection to an available circuit is made, only ID 253, EOT or hang-up time-out can terminate the function.

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24 TK-980/ 981 9. External Speaker 9-1. KES-3 : Option The KES-3 is an external speaker for the 3.5-mm-diam- eter speaker jack. -Connection procedure 1. Connect the KES-3 to the 3.5-mm-diameter speaker jack on the rear of the transceiver. 9-2. KES-4 : Option The KES-4 is an external speaker used with the acces- sory connection cable. -Connection procedure 1. Install the KCT-19 in the transceiver. (See the KCT-19 section.) 2. Insert the crimp terminal into the square plug supplied with the KCT-19. 3. Connect CN5 of the transceiver to connector C of the KCT-19 instead of to the internal speaker connector. KES-3 KES-4 1 3 6 13 15 12 Crimp terminal (E23-0613-05)Black lead Black/White lead Fig. 17Fig. 18 6. Rotate the control panel 180 degrees and mount it on the transceiver. Refit the two halves of the case to complete installation. (Fig. 16) Fig. 16 INSTALLATION

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TK-980/981 PARTS LIST 35 Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description New Desti- parts nation New Desti- parts nation C271 C93-0550-05 CHIP C 1.0PF C C272 CC73GCH1H010C CHIP C 1.0PF C C273 C93-0552-05 CHIP C 2.0PF C TK-981 C273 C93-0553-05 CHIP C 3.0PF C TK-980 C274 CC73GCH1H221J CHIP C 220PF J C275 C92-0002-05 CHIP-TAN 0.22UF 35WV C276 C92-0657-05 CHIP-TAN 2.2UF 20WV TK-981 C276 C92-0754-05 CHIP-TAN 4.7UF 20WV TK-980 C284-286 CC73GCH1H470J CHIP C 47PF J C289 CK73GB1E103K CHIP C 0.010UF K C303 C92-0565-05 CHIP-TAN 6.8UF 10WV C304 CC73GCH1H101J CHIP C 100PF J C306 CC73GCH1H101J CHIP C 100PF J C307 CK73GB1H103K CHIP C 0.010UF K C308 CC73GCH1H2R5B CHIP C 2.5PF B C309 CC73GCH1H010B CHIP C 1.0PF B C310 CC73GCH1H1R5B CHIP C 1.5PF B TK-981 C310 CC73GCH1H2R5B CHIP C 2.5PF B TK-980 C313 CC73GCH1H101J CHIP C 100PF J C314 C92-0001-05 CHIP C 0.1UF 35WV TK-980 C314 C92-0503-05 CHIP C 0.068UF 35WV TK-981 C315 CK73GB1C104K CHIP C 0.10UF K C317 CC73GCH1H101J CHIP C 100PF J C318,319 CK73GB1C104K CHIP C 0.10UF K C320 C92-0003-05 CHIP-TAN 0.47UF 25WV TK-981 C320 C92-0519-05 CHIP-TAN 1.0UF 25WV TK-980 C321 CC73GCH1H040C CHIP C 4.0PF C C322 C92-0003-05 CHIP-TAN 0.47UF 25WV TK-981 C322 C92-0519-05 CHIP-TAN 1.0UF 25WV TK-980 C325 C92-0003-05 CHIP-TAN 0.47UF 25WV TK-981 C325 C92-0519-05 CHIP-TAN 1.0UF 25WV TK-980 C326 CK73FB1C154K CHIP C 0.15UF K C327 CC73GCH1H101J CHIP C 100PF J C328 CK73GB1H471K CHIP C 470PF K C330 CC73FCH1H101J CHIP C 100PF J C437 CK73GB1H102K CHIP C 1000PF K C438 CC73GCH1H220J CHIP C 22PF J C501 CK73GB1H471K CHIP C 470PF K C503,504 CK73GB1H471K CHIP C 470PF K C505 CK73GB1C683K CHIP C 0.068UF K C506 CK73GB1E123K CHIP C 0.012UF K C509 CK73GB1H222K CHIP C 2200PF K C510 C92-0507-05 CHIP-TAN 4.7UF 6.3WV C511 CK73GB1H103K CHIP C 0.010UF K C512 CK73GB1H471K CHIP C 470PF K C513 CK73GB1H102K CHIP C 1000PF K C514 CK73GB1H152K CHIP C 1500PF K C515 CK73GB1C104K CHIP C 0.10UF K C516,517 CK73GB1H103K CHIP C 0.010UF K C518 CK73GB1H102K CHIP C 1000PF K C519 C92-0507-05 CHIP-TAN 4.7UF 6.3WV C520 CC73GCH1H121J CHIP C 120PF J C521,522 CK73GB1C104K CHIP C 0.10UF K C523 CK73GB1H103K CHIP C 0.010UF K C524 CK73GB1C104K CHIP C 0.10UF K C525 CK73GB1H103K CHIP C 0.010UF K C526 CK73GB1C104K CHIP C 0.10UF K C527 CK73GB1C333K CHIP C 0.033UF K C528 CK73GB1H102K CHIP C 1000PF K C529 CK73GB1H562K CHIP C 5600PF KC531 CK73GB1H562K CHIP C 5600PF K C533 CK73GB1H562K CHIP C 5600PF K C535 CK73GB1H102K CHIP C 1000PF K C536 CC73GCH1H030C CHIP C 3.0PF C C537 CK73GB1H272K CHIP C 2700PF K C539 CK73GB1H272K CHIP C 2700PF K C540 CC73GCH1H271J CHIP C 270PF J C541 CC73GCH1H151J CHIP C 150PF J C542 CC73GCH1H271J CHIP C 270PF J C543 CK73GB1H272K CHIP C 2700PF K C544 CC73GCH1H030C CHIP C 3.0PF C C545 CK73GB1H102K CHIP C 1000PF K C546 CK73GB1H122K CHIP C 1200PF K C547 CK73GB1H102K CHIP C 1000PF K C548 C92-0712-05 CHIP-TAN 22UF 6.3WV C549 CK73GB1C104K CHIP C 0.10UF K C550 CC73GCH1H101J CHIP C 100PF J C552 CK73GB1C333K CHIP C 0.033UF K C553 CK73GB1H472K CHIP C 4700PF K C554-558 CK73GB1C104K CHIP C 0.10UF K C559 CK73GB1H102K CHIP C 1000PF K C560 C92-0507-05 CHIP-TAN 4.7UF 6.3WV C561 CK73GB1H102K CHIP C 1000PF K C562,563 CK73GB1H472K CHIP C 4700PF K C564 CK73GB1E223K CHIP C 0.022UF K C565 CK73GB1H102K CHIP C 1000PF K C566 CC73GCH1H101J CHIP C 100PF J C567 CK73GB1E223K CHIP C 0.022UF K C568 C92-0712-05 CHIP-TAN 22UF 6.3WV C569 CC73GCH1H470J CHIP C 47PF J C570 CK73GB1C104K CHIP C 0.10UF K C571 CK73GB1H102K CHIP C 1000PF K C572 CK73FB1H563K CHIP C 0.056UF K C574 CK73GB1C104K CHIP C 0.10UF K C575 CK73FB1C334K CHIP C 0.33UF K C576 CK73GB1C473K CHIP C 0.047UF K C577 CK73GB1C104K CHIP C 0.10UF K C578 CK73GB1H103K CHIP C 0.010UF K C579 CK73GB1H472K CHIP C 4700PF K C580 CK73GB1H102K CHIP C 1000PF K C581,582 CK73GB1H103K CHIP C 0.010UF K C583 CK73GB1H102K CHIP C 1000PF K C584 CK73GB1H471K CHIP C 470PF K C592 CK73GB1H102K CHIP C 1000PF K C593 CK73GB1H103K CHIP C 0.010UF K C594,595 CC73GCH1H270J CHIP C 27PF J C596 CC73GCH1H680J CHIP C 68PF J C597 CK73GB1H103K CHIP C 0.010UF K C598,599 CC73GCH1H101J CHIP C 100PF J C600,601 CK73GB1H102K CHIP C 1000PF K C602 CK73GB1H103K CHIP C 0.010UF K C603 CK73GB1C104K CHIP C 0.10UF K C604 C92-0560-05 CHIP-TAN 10UF 6.3WV C605 CK73GB1H102K CHIP C 1000PF K C606 CK73GB1H472K CHIP C 4700PF K C607 CK73GB1C104K CHIP C 0.10UF K C608 CK73GB1H392K CHIP C 3900PF K C609,610 CK73GB1H103K CHIP C 0.010UF K C612 CK73GB1H103K CHIP C 0.010UF K C613 C92-0606-05 CHIP-TAN 4.7UF 10WVTX-RX UNIT (X57-6520-XX)

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44 TK-980/981 FREQ 256 Frequency adj. Display Function name POW 256 Power L POW 256 Power (Low) [A][A] [A] [A] [C] [C] [C] [C] [C] [C] [C] [C] [C] [C][C] [C] C POW 256 Power (Cen)H POW 256 Power (Hi) TPOW 256 TA power L TPOW 256 TA power (Low) [A][A] [A] [A] [C] [C] [C][C] C TPOW 256 TA power (Cen)H TPOW 256 TA power (Hi) MAX 256 Max deviation L MAX 256 Max deviation (L) [A][A] [A] [A] [C] [C] [C] C MAX 256 Max deviation (C) [C] H MAX 256 Max deviation (H) [C] NMAX 256 Max deviation (NPSPAC TK-980) L NMAX 256 Max deviation (NPSPAC) (L) [A][A] [A] [A] [C] [C] [C] C NMAX 256 Max deviation (NPSPAC) (C) [C] H NMAX 256 Max deviation (NPSPAC) (H) BAL 256 DQT balance L BAL 256 DQT balance (L) [A][A] [A] [A] [C] [C] [C] C BAL 256 DQT balance (C) [C] H BAL 256 DQT balance (H) FQT 256 Fine QT L FQT 256 Fine QT (L) [A][A] [A] [A] [C] [C] [C] C FQT 256 Fine QT (C) [C] H FQT 256 Fine QT (H) FDQT 256 Fine DQT L FDQT 256 Fine DQT (L) [A][A] [A] [A] [C] [C] [C] C FDQT 256 Fine DQT (C) [C] H FDQT 256 Fine DQT (H) FLTR 256 Fine LTR L FLTR 256 Fine LTR (L) [A][A] [A] [A] [C] [C] [C] C FLTR 256 Fine LTR (C) [C] H FLTR 256 Fine LTR (H) [C] DTMF 256 DTMF deviation [C] FMSK 256 MSK deviation [C] [C] TONE 256 Tone deviation SQL 256 Squelch (Wide) FREQ 1 Adjustment item Adjustment (1~256) Press [SCN], now in tuning mode. Use [B] button to write tuning data through tuning modes, and [System Up/ Down] : to adjust tuning requirements (1 to 256 appears on LCD). Use [C] button to select the adjustment item through tun- ing modes. Use [A] button to adjust 3-point tuning.
Tuning Mode ADJUSTMENT LCD display (Tuning mode)

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74 TK-980/ 981 TERMINAL FUNCTION CN7 (TX-RX Unit A/2) -��-�� CN502 (TX-RX Unit B/2) Pin No. Name Function 1 W/N Wide/Narrow switch input. H : Wide 2 T/R TX/RX switch input. H : Receive 3 MO Modulation signal input. 4 TO Low speed data signal input. 5 BEEP Beep input. 6 8R NC (8V) 7 PSW Power switch. 8 DEO Recovery signal output. 9 MM MIC mute. H : MIC mute 10 AFO Recovery signal input. 11 ME MIC ground. 12 MI Internal MIC output. 13 AHK Hook signal output. H : Off hook 14 IGN Ignition output. 15 SB 13.6V output. 16 SB 13.6V output. 17 8C 8V output. 18 KEY TX/Lock detection input. 19 CK Shift register clock input. 20 DT PLL/Shift register/DA converter input. 21 RSSI RSSI signal output. 22 LD PLL unlock detection output. 23 ES Shift register enable input. 24 EP PLL enable signal input. 25 EN DA converter enable signal input. 26 APTT PTT signal output. 27 CP PLL clock. 28 DTC Data control signal output. 29 TXD Serial data 30 RXD Serial data. 31 OE Serial data. 32 FSW Foot switch output. 33 E Ground. CN101 (VCO) -��-�� TX-RX Unit (A/2) Pin No. Name Function 1 E Ground. 2 HT Signal output. 3 E Ground. 4 NC Unused terminal. 5 8CL 8V input. 6 MD Modulation output. 7 CV Control voltage input. CN501 (TX-RX Unit B/2) Pin No. Name Function 1 E Ground (0V). 2 5C Logic power. 3 CS Chip selector signal. L : Option 4 CK Serial clock signal. 5 SID Serial data input. 6 (NC) Unused terminal. 7 (NC) Unused terminal. 8 LED(A) LED anode terminal. 9 LED(K) LED cathode terminal. 10 NC Unused terminal. J501 (TX-RX Unit B/2) Pin No. Name Function 1 BLC MIC backlight control. 2 PSB 13.6V. 3 E Ground. 4 PTT/TXD PTT. 5 ME MIC ground. 6 MIC MIC signal input. 7 HOOK/RXD Hook detection 8 CM MIC data detection.