Kenwood TK-880 series Service Manual Download Page 50

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TK-880

ADJUSTMENT

Adjustment Location

■

Switch

MODULAR

MIC JACK

CALL

DC
SOURCE

BUSY/

TX LED

VOLUME

DOWN

CHANNEL UP

CHANNWL DOWN

SUB

DISPLAY

MONITOR

PRIORITY

SERVICE

AUXILIAY

HANDSET

SCAN

MAIL

PROGRAMMABLE

FUNCTION KEYS

ALPHANUMERIC

DISPLAY

■

Adjustment Point

Note : Variants L203 and L207 are omitted for E3 type.

■

Note

• Flash memory

The firmware program (User mode, Test mode, Tuning

mode, etc.) and the data programmed by the FPU (KPG-60D)
for the flash memory, is stored in memory. When parts are
changed, program the data again.

• EEPROM

The tuning data (Deviation, Squelch, etc.) for the

EEPROM, is stored in memory. When parts are changed,
readjust the transceiver.

Measurement

Test-

equipment

Unit

Terminal

Adjustment

Unit

Parts

Method

Specifications/Remarks

Condition

Item

1. PLL lock

1) Set test mode

DVM

TX-RX

TP1

PLL

TC106 1.5V (Receive)

0.1V

voltage

CH : CH3 - Sig1

Power meter (A/2)

PTT : OFF (Receive)

TC109 1.5V (Transmit)

PTT : ON (Transmit)

2) CH : CH2 - Sig1

Check

8.0V or less

PTT : OFF (Receive)
PTT : ON (Transmit)

Common Section

VR1

TX-RX UNIT (A/2)

PLL/VCO

TC106

TP1

TC109

L207

L203

■

Repair Jig (Chassis)

Use jig (Part No. : A10-4010-02) for repairing the TK-880.

The jig facilitates the voltage check when the voltage on the
component side TX-RX unit (A/2) is checked during repairs.

Summary of Contents for TK-880 series

Page 1: ...50 10 56 TX RX UNIT X57 6152 XX A 2 E E4 57 TX RX UNIT X57 6152 XX B 2 E E4 63 TX RX UNIT X57 6372 70 A 2 E3 67 TX RX UNIT X57 6372 70 B 2 E3 73 SCHEMATIC DIAGRAM E E4 77 SCHEMATIC DIAGRAM E3 85 BLOCK DIAGRAM 93 LEVEL DIAGRAM 96 TERMINAL FUNCTION 98 SPECIFICATIONS 99 CONTENTS Cabinet Upper A01 2165 23 Panel assy A62 0642 03 Key top K29 9105 02 REVISED E E3 E4 versions This Service Manual was revis...

Page 2: ...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 3 PLANNING THE INSTALLATION 3 1 General Inspect the vehicle and determine how and where the radio antenna and accessories will be mounted Plan cable runs for protection aga...

Page 3: ...jack cap B09 0235 05 1 Operation Features The TK 880 is a UHF FM radio designed in both 5 tone model and DTMF 2 tone DMS model The programmable features are summarized This transceiver can handle up to 250 groups with 250 channels in each group Model 5 tone Basic DTMF 2 tone DMS Full Full Special setting 1 1 5 tone Model In this model you can program Basic or Full level fea tures When you select B...

Page 4: ... the underscore disappears and the OPT ports turns to the deactive level high OPERATING FEATURES Channel Name Press this key to switch between the Channel name and Grp Ch for the display If no channel name is pro grammed the transceiver automatically displays the group channel Channel Up Down When this key is pressed each time the channel number to be selected is increased decreased and repeats if...

Page 5: ...ransceivers preset When this key is held down for one second the trans ceiver enters OST select mode In this mode the display shows OST No or OST name which is set to the channel and operator can select one of OST tone pair using Channel up Channel down key If pressed this key again the displayed OST code is memorized to the channel the transceiver exits from the OST select mode returns to normal ...

Page 6: ...hannel down keys to select a number Then press C key to enter the selected number The selected digit will shift left to enter the next digit Press D key to move the cursor 1 position right Hold down D key 6 key on a keypad to clear the entered num ber Selcall List Press Selcall list key to enter Selcall list mode 5 tone Select the check box of Selectable selcall digit The number of digit you selec...

Page 7: ...the LCD When the target 5 tone code is received you can select to transfer the code to another transceiver When a mobile transceiver receivers the target 5 tone code a mobile trans ceiver transfers the received 5 tone code to a portable When Special setting is selected enabled and using decode format this parameter is not valid None When you press this key the transceiver emits the Key input error...

Page 8: ... the channels unlocked out of the scanning sequence Selective call and scrambler are optional functions that can be programmed Dispalys received messages when using 5 tone or DMS 10 A B C D key These keys are programmable function PF keys MODULAR MIC JACK CALL CALL DC SOURCE BUSY TX LED VOLUME UP VOLUME DOWN CHANNEL UP CHANNEL DOWN 1 2 3 10 9 4 5 6 7 8 Fig 1 3 Scan Operating Scan types Single grou...

Page 9: ... used revert channel in cludes talkback function 6 Selected with talkback The transceiver reverts to the channel before scanning or the channel that you changed during scan OPERATING FEATURES Scan end When you reactivate the key programmed to the scan function during scan mode the scan ends The scan icon SCN and scan text or revert channel programmable display goes off Temporarily delete add It is...

Page 10: ...s sent on end of transmis sion Both DTMF ID BOT FFSK ID is sent on beginning of transmission and DTMF ID EOT FFSK ID is sent on end of transmission Radio password When the password is set in the transceiver user can not use the transceiver unless enter the correct password This code can be up to 6 digits from 0 to 9 and input with the key and CALL key Off hook decode If the Off hook decode functio...

Page 11: ...e will sound If the selective call alert LED is set up the orange LED will flash While option signalling matches or if option signalling is deactivated when you are transmitting you can mute or unmute ID QT DQT Carrier OPERATING FEATURES AND OR Option signalling match conditions can be selected with AND OR logic Alert Transpond AND Triggers at match with QT DQT ID DTMF 2 tone Both OR Triggers only...

Page 12: ...he request function is initiated by serial control on the base station Optional Short Message A maximum of 48 characters can be sent External equip ment is required Received Short Messages will be dis played in the same manner as a Status Message A maxi mum of 15 received messages can be stored in the stack memory In the Stack Mode 3 digit LCD indicates the re ceived Short Message as Q1 Q15 Long M...

Page 13: ...ckout setting As soon as a channel is cleared some transmissions may crash Random access is used to avoid this by employing a random trans mission sequence Number of Retries Number of Retries is the maximum number of retry transmission when no acknowledgement is received in the Maximum ACK Wait Time Increase this item to improve data communication reliability TX Busy Wait Time TX Busy Wait Time is...

Page 14: ... key to enter receive entry mode When you enter receive entry mode you can change the receive code 01 You can receive the receive code after the modification Selectable Selcall Digit Select the check box to change selcall code maximum 8 digits manually when transmitting encode code You can not select selectable selcall digit and selectable status digit at the same time For example the transceiver ...

Page 15: ... you can do with Feature level Basic and Full and Special setting Disabled Menu driven method In addition you can write the original script to control various functions and signalling timing Refer to each func tion of encode decode format code for details Sample scripts are also available in the KPG 60D You can create 32 different types of encode decode for mats You can assign a name up to 12 char...

Page 16: ...y using a per sonal computer programming interface KPG 46 and pro gramming software KPG 60D The programming software can be used with an IBM PC or compatible Figure 1 shows the setup of an IBM PC for programming 5 2 Connection Procedure 1 Connect the TK 880 to the personal computer with the interface cable 2 When the Power switch on user mode can be entered immediately When PC sends command the ra...

Page 17: ...g 7 If writing ends successfully the LED on the TK 880 lights and the checksum is displayed 8 If you want to continue programming other TK 880 re peat steps 4 to 7 Notes This mode cannot be entered if the Firmware program ming mode is set to Disable in the Programming soft ware KPG 60D When programming the firmware it is recommend to copy the data from the floppy disk to your hard disk be fore upd...

Page 18: ...ame as RX signalling Scan del add SCN DEL ADD RF power PWR HIGH LOW Beat shift SFT YES NO Wide Narrow W N WIDE 5k WIDE 4k NARROW Compander CMP ON OFF Note Wide 4k cannot be selected for E3 type when choosing wide or narrow REALIGNMENT 7 3 Flow Chart Self programming mode Channel setting mode Channel selection Group selection C CALL CALL CALL OFF QT OFF CALL A CALL DQT N DQT I D RX frequency C D C ...

Page 19: ... Ground 7 B 3 SB Switched B DC 13 2V output Maximum 0 75A 8 D 7 PTT External PTT input active low During DTC is low it works as DATA PTT 9 D 4 DI Data modulation input 10 B 1 HOR Horn alert call output 11 D 8 SQ Squelch detect output active low 12 C 1 SP Speaker audio output 13 E 1 CN2 LOK TX logic signal output active low 1 and 2 CN4 CN2 AM Speaker mute input 14 E 2 CN4 RXD Serial control data in...

Page 20: ...Active type can be selectable in the KPG 60D 2 MM I MIC mute input 3 DTC I Data control channel signal input Data channel L Normal channel H TXS O Signal indicating whether the trans ceiver is transmitting or not TX H FSW I Foot switch signal input Foot sw on L Foot sw off H LOK O TX logic signal output Active logic level is low Active type can be selectable in the KPG 60D CN3 1 HOR O Horn alert s...

Page 21: ... Please OP TX RX A 2 EMG select option board type in the KPG 60D CODE1 O Option code 1 for voice C1 TX RX A 2 scrambler code 1 CODE2 O Option code 1 for voice C2 TX RX A 2 scrambler code 2 Connector Pin Pin I O Function No No name 2 RXD I Serial data input 1 Com1 port must be select DATA GPS function in the KPG 60D 3 TXD O Serial data output 1 Com1 port must be select DATA GPS function in the KPG ...

Page 22: ...ver See the KCT 19 section 2 Insert the KCT 18 lead terminal 2 into pin 3 of the square plug 1 supplied with the KCT 19 then insert the square plug into the KCT 19 connector 3 1 3 6 13 15 KCT 18 KCT 19 Contact 1 2 3 Fig 3 5 Optional Voice Scrambler Function The optional voice scrambler function can be used by two methods 1 Assign this function to the Scrambler key by using the programming software...

Page 23: ...ig 6 2 3 4 1 3 W1 W2 CN1 CN2 KCT 19 Cushion G13 1710 04 CN3 CN5 1 CN3 MPTT GND SB TXAO TXAI RXAO RXAI R571 R529 C4 C3 OP C2 C1 TX RX unit A 2 Component side view TX RX unit B 2 Control section Foil side view Code 4 C4 Code 3 C3 Code 2 C2 Code 1 C1 TX RX A 2 PCB TX RX A 2 PCB TX RX A 2 PCB TX RX A 2 PCB TX RX A 2 PCB TX RX B 2 PCB TX RX B 2 PCB TX RX B 2 PCB TXAI TXAI RXAI RXAI OPT OP MPTT MPTT SB ...

Page 24: ...3 180 degrees 4 4 Insert the flat cable into the control section connector CN502 5 5 Mount the control section on the transceiver 6 Fig 9 Fig 10 CN502 1 2 3 4 5 6 R1 TX RX UNIT A 2 ANT KCT 19 CN7 PA R109 Fig 7 KAP 1 foil side view Public address The signal from pin 13 of IC7 on the TX RX unit A 2 drives PA relay in the KAP 1 and switches the audio power amplifier output between the external PA sys...

Page 25: ...ansceiver 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 Fig 12 Fig 13 KES 3 KES 4 1 3 6 13 15 12 Crimp terminal E23 0613 05 Black lead Black White lead Note When installing KES 4 you must use an optional cable KCT 19 Do not connect the KES 4 ...

Page 26: ...nd implement the optimum input level to the mixer then enters IC200 A DBM is used as a mixer to achieve a high potential The signal output from the mixer is amplified by an inter mediate frequency amplifier and input to two MCFs XF1 The signal is amplified by another intermediate amplifier and goes to the FM IF IC IC11 The first intermediate fre quency signal is mixed with the second local signal ...

Page 27: ...s The VCO for the transmitter is described below It is de signed so that Q103 turns on with a prescribed frequency when a reverse bias is applied to D102 and D104 by using the control voltage CV through CN101 The control voltage is changed by turning the trimmer capacitor IC109 The output from Q103 is applied to the buffer amplifier Q106 to generate a VCO output signal This signal is used as a dri...

Page 28: ...he transmit output signal from the VCO is amplified to a specified level of the power module IC400 by the drive block Q203 Q204 Q205 The amplified signal passes through the transmission reception selection diode D209 and goes to a low pass filter The low pass filter removes unwanted high frequency harmonic components and the resulting signal is goes the antenna terminal APC Circuit The automatic t...

Page 29: ... Q511 Fig 12 Key matrix circuit Encode The QT DQT signals are output from LSDO of the CPU IC511 and go to the D A converter IC5 of the TX RX unit A 2 The DTMF and single 5 tone signals are output from HSDO of the CPU and goes to the audio processor IC504 An MSK signal is output from the audio processor according to the data AFDAT from the CPU The signal is summed with a MIC MSK signal by the audio...

Page 30: ... L L H H OFF H H H L L ON Power Supply Circuit When the POWER switch on the control unit is pressed the PSW signal goes low This signal is inverted by Q26 and sent to a flip flop IC IC15 This IC outputs a control signal when the PSW goes low When the power turns on pin 1 of IC15 outputs a low signal and Q30 turns on The base of Q28 goes high Q28 turns on SB SW Q27 turns on and power SB is supplied...

Page 31: ... unlock detect input 32 AFMSKE O FFSK modulation enable Enable active H 33 TXD O Serial interface output 34 HOOK I Hook input Serial interface input 35 AFDAT O FFSK data output Microprocessor 30620M8A 2K9GP TX RX Unit B 2 Control Section IC511 Pin No Name I O Function 36 RFCLK O Common clock output TX RX unit A 2 37 RDY Not used 38 ALE Not used 39 HOLD Not used 40 HLDA Not used 41 BLCK Not used 42...

Page 32: ...d LED H ON L OFF 5 Q2 LEDG Green LED H ON L OFF 6 Q3 KEYBLT Key back light H ON L OFF 7 Q4 MMUTE MIC mute H Mute L Unmute 8 VSS GND 9 NC 10 NC 11 Q8 PA2 Public address control 2 H ON L OFF 12 Q7 BSHIFT Beat shift H ON L OFF 13 Q6 KEY TX power switching H TX L RX 14 Q5 T R TX RX switching H RX L TX 15 OE Output enable 16 VDC 5V Terminal function TX RX unit A 2 IC8 Pin No Port Name Function 1 STB ES...

Page 33: ...on Q12 8T switch Q13 on time on Q13 8T SW control KEY H time on Q15 IF amp 44 85MHz Q16 AF switch Wide time on Ref No Use Function Operation Condition Q17 PC switch TX 8T time on Q18 DET mute KEY H time on Q19 APC APC driver Q20 APC APC pre driver Q21 APC control Q22 TOF switch TOF H time on Q23 W N switch Wide time off Q24 W N switch Wide time on Q25 TOF switch Q22 on time on Q26 Inverter Power s...

Page 34: ... MIC mute MM H and MM1 H time mute on Q502 AF mute KEY H time mute on Q503 Noise amp Ref No Use Function Operation Condition Q507 Inverter PA2 H L switch Q508 LED switch LG H time on Busy time green on Q509 LED switch LR H time on TX time red on Q510 Clock switch shift BSFT H time clock shift on Q511 FSW swtich FSW L time foot switch on Q512 Key backlight switch KBLC H time on Q513 Key backlight s...

Page 35: ...N67 3008 46 PAN HEAD SEMS SCREW W C 1A 2B 1C N87 2606 46 BRAZIER HEAD TAPTITE SCREW D 2B N87 2612 46 BRAZIER HEAD TAPTITE SCREW 44 1D N99 0395 05 SCREW SET 46 1B T07 0246 05 SPEAKER D511 B30 2151 05 LED RED GREEN D512 517 B30 2171 05 LED D C1 15 CK73GB1H102K CHIP C 1000PF K C16 C92 0507 05 CHIP TAN 4 7UF 6 3WV C17 C92 0628 05 CHIP TAN 10UF 10WV C18 C92 0507 05 CHIP TAN 4 7UF 6 3WV C19 CC73GCH1H100...

Page 36: ...143 CK73GB1H471K CHIP C 470PF K C144 CK73GB1H102K CHIP C 1000PF K C145 146 CK73GB1H471K CHIP C 470PF K C147 CC73FCH1H0R5B CHIP C 0 5PF B C148 CK73GB1H102K CHIP C 1000PF K C149 CC73FCH1H010B CHIP C 1 0PF B E4 C149 CC73FCH1H1R5B CHIP C 1 5PF B E E3 C150 CC73GCH1H220J CHIP C 22PF J C151 CK73GB1H102K CHIP C 1000PF K C153 154 CK73GB1E103K CHIP C 0 010UF K C155 CK73GB1H102K CHIP C 1000PF K C156 157 CK73...

Page 37: ...F 20WV E3 C325 C92 0002 05 CHIP TAN 0 22UF 35WV C326 CK73FB1C154K CHIP C 0 15UF K C330 331 CC73GCH1H1R5C CHIP C 1 5PF C E E4 C330 331 CC73GCH1H220J CHIP C 22PF J E3 C400 401 CC73GCH1H100D CHIP C 10PF D E4 C405 407 CC73GCH1H220J CHIP C 22PF J C409 CC73GCH1H220J CHIP C 22PF J C414 CK73GB1H471K CHIP C 470PF K C419 CC73GCH1H220J CHIP C 22PF J C422 CK73GB1H102K CHIP C 1000PF K C423 C92 0628 05 CHIP TAN...

Page 38: ...22UF 6 3WV C720 CC73GCH1H470J CHIP C 47PF J C721 723 CC73GCH1H221J CHIP C 220PF J C724 CK73GB1E123K CHIP C 0 012UF K C726 CK73GB1C104K CHIP C 0 10UF K C728 C92 0772 05 CHIP TAN 10UF 6 3WV E3 C901 CK73GB1H471K CHIP C 470PF K E3 C902 CC73GCH1H360J CHIP C 36PF J E3 C903 CC73GCH1H2R5B CHIP C 2 5PF B E3 C904 CC73GCH1H360J CHIP C 36PF J E3 C905 CC73GCH1H101J CHIP C 100PF J E3 C907 CC73GCH1H100D CHIP C 1...

Page 39: ...CHIP R 180K J 1 16W R17 18 R92 1252 05 CHIP R 0 OHM J 1 16W R19 RK73GB1J153J CHIP R 15K J 1 16W R20 RK73GB1J104J CHIP R 100K J 1 16W R21 RK73GB1J563J CHIP R 56K J 1 16W R22 RK73GB1J104J CHIP R 100K J 1 16W R23 RK73GB1J184J CHIP R 180K J 1 16W R25 RK73GB1J394J CHIP R 390K J 1 16W R26 RK73GB1J104J CHIP R 100K J 1 16W R27 RK73GB1J473J CHIP R 47K J 1 16W R28 R92 1252 05 CHIP R 0 OHM J 1 16W R29 RK73GB...

Page 40: ... J 1 10W E3 R204 205 RK73FB2A100J CHIP R 10 J 1 10W E R204 205 RK73FB2A220J CHIP R 22 J 1 10W E3 R204 205 RK73FB2A680J CHIP R 68 J 1 10W E4 R206 RK73FB2A102J CHIP R 1 0K J 1 10W E R206 RK73FB2A471J CHIP R 470 J 1 10W E3 R206 RK73FB2A151J CHIP R 150 J 1 10W E4 R209 210 RK73GB1J104J CHIP R 100K J 1 16W E E4 R211 RK73GB1J332J CHIP R 3 3K J 1 16W R212 213 RK73GB1J102J CHIP R 1 0K J 1 16W R214 RK73GB1J...

Page 41: ...J 1 16W R542 RN73GH1J683D CHIP R 68K D 1 16W R544 RK73GB1J101J CHIP R 100 J 1 16W R545 RK73GB1J182J CHIP R 1 8K J 1 16W R546 RK73GB1J224J CHIP R 220K J 1 16W R547 RK73GB1J103J CHIP R 10K J 1 16W R548 RK73GB1J183J CHIP R 18K J 1 16W R550 RN73GH1J682D CHIP R 6 8K D 1 16W R551 RK73GB1J223J CHIP R 22K J 1 16W R552 RK73GB1J334J CHIP R 330K J 1 16W R553 RK73GB1J102J CHIP R 1 0K J 1 16W R554 RK73GB1J332J...

Page 42: ...73GB1J223J CHIP R 22K J 1 16W E3 R904 R92 1252 05 CHIP R 0 OHM J 1 16W E3 R908 R92 1252 05 CHIP R 0 OHM J 1 16W E3 VR1 R32 0668 05 SEMI FIXED VARIABLE RESISTOR D1 6 DA204U DIODE D1 6 HSB123 DIODE D7 02DZ20 Y Z ZENER DIODE D8 9 DA204U DIODE D8 9 HSB123 DIODE D11 DAN202U DIODE D12 14 DA204U DIODE D12 14 HSB123 DIODE D15 DAN235E DIODE D16 1SS355 DIODE D17 DA204U DIODE D17 HSB123 DIODE D20 1SS355 DIOD...

Page 43: ...GCH1H040B CHIP C 4 0PF B E E4 C115 CC73GCH1H030B CHIP C 3 0PF B E3 C116 CC73GCH1H060B CHIP C 6 0PF B E E4 C116 CC73GCH1H080B CHIP C 8 0PF B E3 C117 CK73GB1H471K CHIP C 470PF K C118 CC73GCH1H020B CHIP C 2 0PF B E3 C118 CC73GCH1H090B CHIP C 9 0PF B E E4 C119 120 CK73GB1H471K CHIP C 470PF K C121 CC73GCH1H050B CHIP C 5 0PF B E3 C121 CC73GCH1H070B CHIP C 7 0PF B E E4 C122 CC73GCH1H0R5B CHIP C 0 5PF B C...

Page 44: ...IP TAN 10UF 16WV R1 RK73GB1J103J CHIP R 10K J 1 16W R3 R92 1252 05 CHIP R 0 OHM J 1 16W Q1 2SC2412K S TRANSISTOR Ref No Address Parts No Description Ref No Address Parts No Description New Desti parts nation New Desti parts nation SUB UNIT X58 4850 10 SUB UNIT X58 4850 10 ...

Page 45: ...24x2 46 14 30 23x2 12 11 8 29 17 18 IC400 26 27x2 J501 20 6 42 13 19 28 15 2 28 3 16x2 31 J1 TX RX unit A 2 Sub unit TX RX unit B 2 Cx2 704 701 702 B 705 706 B Cx2 Dx11 Ax2 C C 703 703 A A 39 22 32 A M2 6 x 6 OC BLK N32 2606 45 B M3 x 8 N67 3008 46 C M2 6 X 6 Br Tap N87 2606 46 D M2 6 x 12 Br Tap N87 2612 46 ...

Page 46: ...ord E30 3438 05 21 Fuse F52 0006 05 40 Bracket J29 0627 23 9 Rating label B42 5999 14 E3 35 Inner packing case H12 1391 03 44 Screw set N99 0395 05 707 Pamphlet 34 Polystyrene foamed fixture B H10 6619 12 37 Protection bag H25 0720 04 7 Instruction manual B62 1438 00 33 Polystyrene foamed fixture F H10 6618 12 38 Item carton case H52 1570 02 E E3 H52 1932 02 E4 PACKING ...

Page 47: ...djusted for the frequencies shown in the following table When required re adjust them follow ing the adjustment procedure to obtain the frequencies you want in actual operation Frequency MHz Channel E E4 E3 No RX TX RX TX 1 455 05000 455 10000 428 05000 419 10000 2 440 05000 440 10000 406 05000 406 10000 3 469 95000 469 90000 449 95000 431 90000 4 455 00000 455 00000 428 00000 428 00000 5 455 2000...

Page 48: ...low level RSSI high level Squelch tight level n SQL xxx s SQL xxx CALL 3 point tuning 3 point tuning 3 point tuning B B w LRSI xxx n LRSI xxx s LRSI xxx CALL 3 point tuning 3 point tuning 3 point tuning B B w SQLT xxx n SQLT xxx s SQLT xxx CALL 3 point tuning 3 point tuning 3 point tuning B B w HRSI xxx n HRSI xxx s HRSI xxx CALL 3 point tuning 3 point tuning 3 point tuning SENS xxx 3 point tuning...

Page 49: ...Sensitivity Frequency Range 10Hz to 1000MHz Frequency Counter Frequency Stability 0 2ppm or less 7 Ammeter 20A 8 AF Volt Meter Frequency Range 50Hz to 10kHz AF VTVM Voltage Range 1mV to 3V 9 Audio Generator AG Frequency Range 20Hz to 20kHz or more Output 0 to 1V 10 Distortion Meter Capability 3 or less at 1kHz Input Level 50mV to 10Vrms 11 4Ω Dummy Load Approx 4Ω 10W 12 Regulated Power Supply 13 2...

Page 50: ...again EEPROM The tuning data Deviation Squelch etc for the EEPROM is stored in memory When parts are changed readjust the transceiver Measurement Test equipment Unit Terminal Adjustment Unit Parts Method Specifications Remarks Condition Item 1 PLL lock 1 Set test mode DVM TX RX TP1 PLL TC106 1 5V Receive 0 1V voltage CH CH3 Sig1 Power meter A 2 PTT OFF Receive TC109 1 5V Transmit PTT ON Transmit 2...

Page 51: ...sed once SSG freq See freq table Then adjust for SSG output Sensitivity squelch open point value of 12dB SINAD SSG MOD 1 5kHz Narrow 2 nC SQL SSG freq See freq table 3 nH SQL SSG freq See freq table 4 sL SQL sC SQL sH SQL SSG freq Same as narrow adjustment SSG output Sensitivity value of 12dB SINAD SSG MOD 2 4kHz Wide 4k 5 wL SQL wC SQL wH SQL SSG freq Same as narrow adjustment SSG output Sensitiv...

Page 52: ...Bm SSG MOD 1 5kHz Narrow 2 nC HRSI SSG freq See freq table 3 nH HRSI SSG freq See freq table 4 sL HRSI sC HRSI sH HRSI SSG freq 70dBm SSG output Sensitivity value of 12dB SINAD SSG MOD 2 4kHz Wide 4k 5 wL HRSI wC HRSI wH HRSI SSG freq 70dBm SSG output Sensitivity value of 12dB SINAD SSG MOD 3 0kHz Wide 5k 7 Squelch 1 Set test mode Check Squelch must be opened check CH CH1 Sig1 Wide 5k Wide 4k Narr...

Page 53: ...TT ON 5 H HPOW Set H HPOW 250 1 0W E PTT ON if you cannot adjust 1 0W 5 0W E3 the output power to 0 2W E4 25W for E3 type 4 Low power 1 Set test mode Power meter 6 0W E E3 0 5W E E3 Select LPOW in tuning mode 1 0W E4 0 1W E4 L LPOW PTT ON 2 L2 LPOW PTT ON 3 C LPOW PTT ON 4 H2 LPOW PTT ON 5 H LPOW PTT ON 5 Power check 1 Set test mode Power meter ANT Check 25W 1W 8A or less E E3 CH CH1 Sig1 25W 1W 5...

Page 54: ... nC MAX PTT ON 3 nH MAX PTT ON 4 s MAX PTT ON 5 w MAX PTT ON 8 MIC 1 Set test mode Check 3kHz 0 2kHz Wide 5k seisitivity CH CH1 Sig1 2 4kHz 0 1kHz Wide 4k check AG 1kHz 4mV 1 5kHz 0 05kHz Narrow PTT ON 9 QT deviation 1 Set test mode 0 75kHz Wide 5k 50Hz Select QT in tuning mode 0 60kHz Wide 4k Wide 5k Wide 4k Narrow nL QT 0 35kHz Narrow Deviation meter filter LPF 3kHz HPF OFF PTT ON 2 nC QT PTT ON...

Page 55: ...rrow LPF 15kHz Oscilloscope HPF OFF PTT ON AF VTVM Front MIC AG panel 2 s DTMF PTT ON 3 w DTMF PTT ON 12 FFSK 1 Set test mode 3 0kHz Wide 5k 0 1kHz deviation Select n FFSK in tuning mode 2 4kHz Wide 4k Wide 5k Wide 4k Narrow Deviation meter filter 1 5kHz Narrow LPF 15kHz HPF OFF PTT ON 2 s FFSK PTT ON 3 w FFSK PTT ON 13 TONE 1 Set test mode 3 0kHz Wide 5k 0 1kHz deviation Select n TONE in tuning m...

Page 56: ...120 CN101 CV MD 8CL 9CL E HT ST J72 0733 02 G S D G S D C107 C114 C121 C118 C111 C123 D105 C120 R116 C110 C108 R101 R102 TC106 L101 TC109 R117 R106 R105 C113 C124 L111 R112 R113 L102 C127 D101 D102 D103 D104 L108 C128 Q101 Q103 L103 L104 C102 C126 C117 C119 R110 C125 R107 C115 C104 C105 R103 R108 R104 C116 L110 L109 C122 R115 R109 R114 R111 C129 R118 L107 Q102 Q104 Q105 Q106 L105 L106 R119 R120 PL...

Page 57: ...7 C131 C272 C269 CN4 C230 R234 L228 R221 D206 D205 D204 D203 D214 D12 D13 D8 C70 C319 R314 R313 C318 C314 R310 C37 C306 IC14 C4 C8 C13 C5 C2 C3 C6 C9 C7 C90 C295 C444 C294 C97 C423 C125 C293 C312 R309 R121 C100 R224 C239 R129 R98 R58 Q302 Q301 R300 C36 C16 C176 R302 R305 R303 R301 R2 R50 C204 R420 C207 R68 L5 R312 R311 C48 R414 C28 R30 R44 R201 R202 R111 Q21 C321 B C E Q203 Q17 R80 C68 R76 R85 R16...

Page 58: ...9 C65 C135 C253 C42 R90 IC6 C121 Q202 1 2 3 4 C250 C247 R239 C248 C430 C409 C431 C252 C249 Q205 R203 C148 C78 C144 R69 D20 D26 R39 8C 5C 8T TR SB 8R DT ES 9C Q12 R62 R106 PA C197 C198 C195 C196 C80 R130 R36 R411 R406 C24 R52 R28 R29 L212 TP4 R131 R104 R238 L3 C55 Q204 C251 L219 D23 R107 R31 R22 R140 C134 R26 R27 R147 C138 C145 TV C67 R79 D15 C30 R34 L214 R231 SP R181 R182 Q22 Q25 Q29 Q9 L205 X1 LD...

Page 59: ... R154 D31 R155 R244 R243 R240 L217 C254 R142 C104 C118 C92 C108 D22 R45 R42 C73 C76 D16 R144 R145 R153 R17 C29 R9 R151 R138 R146 C141 C147 C292 L4 C69 IC200 1 3 4 6 R53 C234 L1 R235 C475 L216 C245 C139 C149 Q23 Q24 Q26 Q28 Q30 Q31 R157 R242 C136 C153 C154 C155 C156 C275 C206 C205 C284 C285 C286 C407 C406 L7 R158 R421 R162 R251 R168 C279 C157 L206 L9 C158 C159 C164 C165 C166 C167 R256 R255 L225 CN7...

Page 60: ...R725 CN501 1 10 Q501 CN502 33 1 L501 L502 L504 L505 L508 C629 Q515 E 5C CS CK SID NC NC LEDA LEDK NC E FSW OE RXD TXD DTC CP APTT EN EP ES LD RSSI DT CK KEY 8C SB SB IGN AHK MI ME AFO MM DEO PSW 8R BEEP TO MO T R W N IC508 CM MIC PTT TXD PSB BLC D513 E ME HOOK RXD R682 C592 C583 IC501 1 1 4 4 5 5 8 8 C513 C535 IC503 R507 C518 IC502 D517 R517 C593 C511 R508 C527 C575 R545 R551 D512 D515 D516 R514 R...

Page 61: ... N E 5C CS CK SID NC NC LEDA LEDK NC Q515 IC508 CM MIC PTT TXD PSB BLC D513 E ME HOOK RXD R682 C592 C583 IC501 1 1 4 4 5 5 8 8 C513 C535 IC503 R507 C518 IC502 D517 R517 C593 C511 R508 C527 C575 R545 R551 D512 D515 D516 R514 R510 R612 R572 1 8 9 16 C524 R525 R526 C506 R502 C574 D510 D520 R548 C540 C547 R552 R523 R531 Q511 C510 C710 C712 1 1 8 4 5 3 4 5 C714 IC710 R710 R713 R714 R726 L507 D511 C D C...

Page 62: ...45 C446 R422 C140 R115 C422 R417 C131 C272 C269 CN4 C230 R234 L228 R221 D12 D13 D8 C70 C319 R314 R313 C318 C314 R310 C37 C306 IC14 C4 C8 C13 C5 C2 C3 C6 C9 C7 C295 C444 C294 C97 C423 C125 C293 C312 R309 R121 C100 R224 C239 R129 R98 R58 Q302 Q301 R300 C36 C16 C176 R302 R305 R303 R301 R2 R50 C905 C907 C909 C912 C923 C930 C928 C59 R68 C926 C916 C919 L914 L915 L919 L918 R903 R904 R908 L906 R902 C918 D...

Page 63: ...IC1 IC9 C65 C135 C253 C42 R90 IC6 C121 Q202 1 2 3 4 C250 C247 R239 C248 C430 C409 C431 C252 C249 Q205 R203 C148 C78 C144 R69 D20 D26 R39 8C 5C 8T TR SB 8R DT ES 9C Q12 R62 R106 C197 C198 C195 C196 C80 R130 R36 R411 R406 C24 R52 R28 R29 L212 R131 R104 R238 L3 C55 Q204 C251 D23 R107 R31 R22 R18 R140 C134 R26 R27 R147 C138 C145 C67 R79 D15 C30 R34 L214 R231 SP R181 R182 Q22 Q25 Q29 Q9 X1 LD QAD DEO K...

Page 64: ...4 C303 E C10 C12 C11 C14 C15 CN3 C93 C443 C178 L303 R308 C107 R257 R97 C316 R318 R316 R319 C322 CN5 R7 R8 L211 R110 R232 R48 R47 C98 C96 C63 C31 C429 E L221 R89 R112 R418 IC401 1 4 5 8 R419 Q401 R135 C45 R228 R230 C102 TP3 C243 R233 R113 C447 C448 D11 R6 R74 R176 R60 R139 R149 C267 C270 L222 R120 R415 R416 C233 C77 C320 R307 R304 R99 R91 C90 XF1 Q13 Q16 C106 C105 C331 L306 C330 L305 TP1 IN OUT TP2...

Page 65: ...1 R724 R725 CN501 1 10 Q501 CN502 33 1 L501 L502 L504 L505 L508 C629 Q515 E 5C CS CK SID NC NC LEDA LEDK NC E FSW OE RXD TXD DTC CP APTT EN EP ES LD RSSI DT CK KEY 8C SB SB IGN AHK MI ME AFO MM DEO PSW 8R BEEP TO MO T R W N IC508 CM MIC PTT TXD PSB BLC D513 E ME HOOK RXD R682 C592 C583 IC501 1 1 4 4 5 5 8 8 C513 C535 IC503 R507 C518 IC502 D517 R517 C593 C511 R508 C527 C575 R545 R551 D512 D515 D516...

Page 66: ...P TO MO T R W N E 5C CS CK SID NC NC LEDA LEDK NC Q515 IC508 CM MIC PTT TXD PSB BLC D513 E ME HOOK RXD R682 C592 C583 IC501 1 1 4 4 5 5 8 8 C513 C535 IC503 R507 C518 IC502 D517 R517 C593 C511 R508 C527 C575 R545 R551 D512 D515 D516 R514 R510 R612 D520 R572 1 8 9 16 C524 R525 R526 C506 R502 C574 D510 R548 C540 C547 R552 R523 R531 Q511 C510 C710 C712 1 1 8 4 5 3 4 5 C714 IC710 R710 R713 R714 R726 L5...

Page 67: ...th a dot are parts of layer 1 80 TK 880 E 70 2P B TK 880 E4 71 1 5P B X57 6152 XX C139 1 5P B 1P B C149 1P 2P C270 NO 3P C298 NO 10P C400 NO 10P C401 NO 2P C475 15n 22n L217 NO 15n L410 22K 3 3K R147 10K 6 8K R149 1K 150 R203 10 68 R204 10 68 R205 1K 150 R206 6 8K 10K R226 10K 22K R231 220 2 2K R238 0 NO R402 ...

Page 68: ...81 A C E G I K M O Q S B D F H J L N P R T 1 3 5 7 2 4 6 TK 880 SCHEMATIC DIAGRAM E E4 Note Components marked with a dot are parts of layer 1 ...

Page 69: ...T R P N L J H F D B S Q O M K I G E C A 1 3 5 7 2 4 6 SCHEMATIC DIAGRAM E3 TK 880 Note Components marked with a dot are parts of layer 1 88 ...

Page 70: ...89 A C E G I K M O Q S B D F H J L N P R T 1 3 5 7 2 4 6 TK 880 SCHEMATIC DIAGRAM E3 Note Components marked with a dot are parts of layer 1 ...

Page 71: ...TK 880 TK 880 TK 880 95 BLOCK DIAGRAM ...

Page 72: ...0mVrms W 5k W4k N 130mVrms 4 3dBm 5dBm 17dBm 20dBm 25dBm E E3 20dBm E4 25W SG input level for 12dB SINAD are obtained measured by connecting SG to each point via a 0 01µF capacitor AF VTVM AF level obtained when the AF output level is adjusted for 0 45V 4Ω with the front panel AF VOL control Measured with AF voltmeter connected to the external speaker jack receiving a 53dBm SSG signal modulated at...

Page 73: ...A converter enable 26 APTT External PTT 27 CP PLL clock 28 DTC Data control 29 TXD Serial data 30 RXD Serial data 31 OE Serial data 32 FSW Foot switch 33 E Ground CN101 VCO TX RX Unit A 2 Pin No Name Function 1 ST Switched transmit input H Transmit 2 HT RF output 3 E Ground 4 9CL 9V input 5 8CL 8V input 6 MD Modulation input 7 CV Control voltage input CN501 TX RX Unit B 2 Pin No Name Function 1 E ...

Page 74: ... RECEIVER Measurements made per ETS standard RF Input Impedance 50Ω Sensitivity EIA 12dB SINAD Wide 0 28µV Narrow 0 35µV Selectivity Wide 70dB Narrow 60dB Intermodulation 70dB Spurious and Image Rejection 80dB Audio Power Output 4W at 4Ω less than 10 distortion Channel Frequency Spread E E4 30MHz E3 44MHz TRANSMITTER Measurements made per ETS standard RF Power Output E E3 5 to 25W E4 1 to 5W Spuri...

Page 75: ...aris France KENWOOD ELECTRONICS U K LIMITED KENWOOD House Dwight Road Watford Herts WD1 8EB United Kingdom KENWOOD ELECTRONICS EUROPE B V Amsterdamseweg 37 1422 AC Uithoorn The Netherlands KENWOOD ELECTRONICS ITALIA S p A Via G Sirtori 7 9 20129 Milano Italy KENWOOD IBERICA S A Bolivia 239 08020 Barcelona Spain KENWOOD ELECTRONICS AUSTRALIA PTY LTD A C N 001 499 074 16 Giffnock Avenue Centrecourt ...

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Kenwood TK-880 series, Service Manual

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