Shopping cart is empty
 
English Polski Spanish 
Search For a Manual
 

(e.g. AA-V20EG JVC, ZX-7 Sony )
PayPal 1000+ rating Secure, Encrypted Checkout.
 
Who's Online
There currently are 304 guests and 
1 member online.
Categories
Information
Featured Product
Home >> KENWOOD >> TK390 Service Manual
 
 0 item(s) in your cart 

KENWOOD TK390
Service Manual


Tweet about this product and get $1.00 of store credit for instant use!
  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of KENWOOD TK390 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

Not yet ready
You must purchase it first

Customer Reviews
There are currently no product reviews.
Other Reviews
 CDR20 HARMAN KARDON Service Manual by CARLOS LOPEZ;
I PURHASED THIS PRODUCT BECAUSE I WAS HAVING PROBLEMS WITH MY CDR20 HARMAN KARDON RECORDER. WHICH I PURCHASED NEW 12 YEARS AGO. AFTER REVIEWING THE MANUAL, I WAS ABLE TO ADJUST THE TENSIONER IN THE SYSTEM. WORKS LIKE A CHAMP!. SAVED ME AT LEAST 100.00 WHICH WAS WHAT A SERVICE REPAIR STATION WANTED. GREAT MANUAL EASY TO READ. SPECIALLY AFTER I PRINTED THE PAGES WHICH DEALT WITH MY RECORDER. THANKS A LOT!!!!!!!!
 ZSX5000 SONY Service Manual by Diogo Silva;
You can fully trust on this one! All the schematics are very crear an in one piece per page
 Z-5000 TEAC Service Manual by MESUT BALCI;
I have never bought a service manual which is as competely readable as this althogh it was a scanned pdf. Thank you for this succesful manual also cheaper than other sites.
 T-77 SANSUI Service Manual by Åsbjörn Ulvstig;
Thanks for a very good and readable servicemanual. Just what I needed as a "dinosaur technician". I really recommmend this site and will come back. Åsbjörn
 VT6500A HITACHI Service Manual by Virgil Norman;
The manual I purchased was just what I needed. I was glad to find a site where I can find so many manuals on a wide variety of products.

Text excerpt from page 19 (click to view)
TK-390
CIRCUIT DESCRIPTION
4. Transmitter System
4-1. Microphone amplifier
The signal from IC3 (control unit) goes through the mute switch (Q403). When the SP-MIC is not attached, the microphone switching terminal (MSW) on the universal connector becomes High, and mute switch (Q403) is turned on. When the SP-MIC is attached, MSW is connected to GND at inside of SP-MIC. For this reason, Q403 is turned off, the internal microphone is muted, and only the input of the external microphone is supplied to the microphone amplifier of the TXRX unit. The signal from microphone passes through the limiter circuit in D601, and through the high-pass filter, the ALC circuit, the low-pass filter, the high-pass filter, and pre-emphasis/IDC circuit in IC607. When encoding DTMF, mute switch (Q601) is turned off for muting the microphone input signal. The signal passes through the D/A converter (IC603) for the maximum deviation adjustment, and enters the summing amplifier consisting of IC605 (1/2), and is mixed with the low speed data from the CPU (IC406). The output signal from the summing amplifier goes to the VCO modulation input. The other output signal from the summing amplifier passes through the D/A converter (IC603) again for the BAL adjustment, and the buffer amplifier (IC604 1/2), and goes to the VCXO modulation input.

4-3. Drive and Final amplifier
The signal from the T/R switch (D7 is on) is amplified by the pre-drive (Q6) and drive amplifier (Q8) to 20mW. The output of the drive amplifier is amplified by the RF power amplifier (IC501 or IC801) to 4W (1W when the power is low). The RF power amplifier consists of two stages MOS FET transistor. The output of the RF power amplifier is then passed through the Transmit-Receive (TX-RX) antenna switching (D10 is on) and the harmonic filter (LPF) and the Internal-External (INT-EXT) antennal switching (in the universal connector) and applied to the antenna terminal.
In the ANT universal connector EXT-INT ANT SW ONâEXT

From T/R SW (D7) +B

Q6 PreDRIVE AMP R35 R37 R39

IC501 or IC801 D10 RF TX-RX DRIVE POWER ANT AMP AMP SW Q9 VDD VGG SW

Q8

LPF

Q7 SW IC7 (1/2) IC7 (2/2)

Q13 REF VOL (IC3) SW

Fig. 7 Drive and final amplifier and APC circuits

4-4. Internal-External (INT-EXT) antenna switching 4-2. Noise cancelling microphone circuit
The two signals from INT MIC (Main & Sub) are input to the positive (+) input (Sub) and to the negative (â) input (Main) of the IC3. If the same signal is input to both Main and Sub, the Main signal is canceled at the output of IC3 (pin 7). In other words, noise from nearby sources not directly connected to the transceiver enters the Main and Sub inputs at the same signal and is therefore canceled out. When a signal is only input to Main and there is no signal at Sub, the Main signal is output as is, from IC3 (pin 7). In other words, only the voice audio of the operator in extremely close proximity to the Main MIC is input to Main so that the signal is output as is from IC3 (pin 7). Also, when the âN/Câ switch is set to âLâ, transistor Q14 turns off so Sub microphone turns off and operation is the same as above.
MM Q601 SW IC3 IC607 MAIN MIC SUB (CONT) Q404 IC603 D/A I4 O4 IC605 (1/2) SUM AMP LSD IC603 D/A I3 O3 IC10 IC604 (1/2) BUFF AMP VCO X1 VCXO N/C AMP MIC Q403 SW D601 LIMIT 12 HPF ALC COMP LPF HPF PRE EMP IDC 6 15 16 18 19 9 8

The INT-EXT antenna switch housed inside the universal connector only switches to the EXT ANT side when an antenna speaker-microphone has been installed. This INT-EXT antenna switch works mechanically and switches based on the operation shown in Figure 8.
EXT ANT

From LPF RF

OFF

Switch OFF â INT Internal ANT antenna

EXT ANT Switch ON â INT External ANT antenna

From LPF RF

ON

TONE

EXT. MIC

Fig. 8 Internal-External antenna switching

MSW

Fig. 6 Microphoen circuit 19

You might also want to buy

$4.99

SX-K700 TECHNICS
Owner's Manual

Complete owner's manual in digital format. The manual will be available for download as PDF file aft…

$4.99

CJ-V51 PIONEER
Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagr…

$4.99

SX-PR602 TECHNICS
Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagr…

$4.99

AG-7500 PANASONIC
Owner's Manual

Complete owner's manual in digital format. The manual will be available for download as PDF file aft…

$4.99

YB400PE GRUNDIG
Owner's Manual

Complete owner's manual in digital format. The manual will be available for download as PDF file aft…

$4.99

AG7330 PANASONIC
Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagr…

$4.99

GRAND PRIX ELECTRONIC 754 BECKER
Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagr…

$4.99

A-1500 TEAC
Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagr…
>
Parse Time: 0.143 - Number of Queries: 136 - Query Time: 0.032