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Kenwood KDC-148 Support Question

Kenwood KDC-148 Support Question

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Question posted by jddottogo7 on May 3rd, 2014

Why Is My Kenwood Kdc 148 Say Protect

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Answer #1: Posted by BusterDoogen on May 3rd, 2014 9:49 AM
This answer was accepted by the poster of the original question.
BusterDoogen

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Initially, protect would be as it implies; the Kenwood has kicked in auto-protect as its systems diagnostics has sensed a fault and kicked in to prevent further damage.

2 possible suspects:
  • fault in the speaker themselves (least likely);
  • fault in the speaker wiring (likely);
  • fault in the amplifier output / power pack/module (most likely).


Unfortunately, no quick/easy fix and neither is there a workaround. The unit would have to be pulled out for voltage / resistance measurements, confirm fault and effect repairs.

I hope this is helpful to you!

Please respond to my effort to provide you with the best possible solution by using the "Acceptable Solution" and/or the "Helpful" buttons when the answer has proven to be helpful. Please feel free to submit further info for your question, if a solution was not provided. I appreciate the opportunity to serve you!


Related Kenwood KDC-148 Manual Pages

Instruction Manual - Page 1

... Kenwood dealer for a Class B digital device, pursuant to radio or television reception, which can be determined by one or more of labels on the warranty card, and in the spaces designated on , or inside the product relating to which the receiver is not installed and used in a residential installation. Model KDC-148/ KDC-108/ KDC...
Instruction Manual - Page 2

... so that they work with : The illustrations in an online manual on the following site: www.kenwood.com/cs/ce/audiofile/ 2 Condensation: When the car is airconditioned, moisture may differ from what appears... This unit can hear sounds outside the car. Detailed information and notes about the playable audio files are stated in this case, remove the disc and wait for the moisture to explain...
Instruction Manual - Page 3

Keep the faceplate in original package until ready to use the remote controller for KDC-148/ KDC-MP148CR. 3 Reset button The unit returns to factory settings when the reset button is equipped for the first time, pull out the insulation sheet. Replace ...
Instruction Manual - Page 5

...previous item. Muting upon the reception of a disc. - To continue listen to the audio system during a call ends, "CALL" disappear. Selects the next/previous folder. (Pressing BAND...-forwards/reverses tracks if pressed and held while in , "CALL" appears. The audio system pauses. The audio system resumes. 5 Turns off if pressed and held . Confirms selection. ENGLISH When...
Instruction Manual - Page 6

... press to select [ON] or [OFF]. Clock hour flashes on the power, the sound attenuates (to play as the source. Press 4 / ¢ to move between audio file disc and music CD. ; 2: Forces to prevent noise when no external component is done for each preset button in source selection. OFF: Disables "AUX...
Instruction Manual - Page 9

...Scan Play is selected for the music. ENT : Pauses/resumes playback. Although the audio files are complied with the standards listed above, the play maybe impossible depending on ... ¢ (+) : Selects track/file. To cancel the Direct Music Search Mode, press or EXIT. About Audio file Playable Audio file: MP3 (.mp3), WMA (.wma) Playable disc media: CD-R/RW/ROM Playable disc file format: ISO ...
Instruction Manual - Page 10

...ON]. [SETTINGS] Item Selectable setting (Preset: *) AUX NAME AUX*/ DVD/ PORTABLE/ GAME/ VIDEO/ TV: Selects the desired name for other than 85 Hz/ 120 Hz/ 160 Hz are ... sources): Presets the volume adjustment level of the subwoofer output to any source except in MP3/WMA audio compression. ; SYSTEM Q NATURAL*/ USER/ ROCK/ POPS/ EASY/ TOP40/ JAZZ/ GAME: Selects ...
Instruction Manual - Page 11

... tape properly, then reset the unit. Try another track or change the disc. A copy-protected file is required. "PROTECT" appears and no operations can only display letters (upper case), numbers, and a limited number... is quite dirty. / The CD is upside-down. / The CD is playing an unsupported audio file. Check the cords and connections. Pull the antenna out all . Change the disc. Check...
Instruction Manual - Page 12

... part of this product requires skills and experience. Mounting and wiring this unit during installation, consult your Kenwood dealer. 12 Installation/connection Part list: A Faceplate 1) B Escutcheon 1) C Mounting sleeve 1) D Casing for faceplate (KDC-148/ KDC-MP148CR only 1) E Wiring harness 1) F Removal tool 2) G Flat head screw (for Nissan cars 4) H Round head screw (for...
Instruction Manual - Page 13

Brown (Mute control wire) To the terminal that is grounded when either the telephone rings or during conversation. (To connect the Kenwood navigation system, consult your navigation manual.) Red (Ignition wire) Yellow (Battery wire) Car fuse box Black (Ground wire) To the metallic body or chassis of ...
Instruction Manual - Page 15

ENGLISH Specifications FM tuner section Frequency range: For KDC-148/ KDC-108: 200 kHz space: 87.9 MHz - 107.9 MHz For KDC-MP148CR: 50 kHz space: 87.5 MHz - 108...to-Noise ratio (1 kHz): 105 dB Dynamic range: 90 dB MP3 decode: Compliant with MPEG-1/2 Audio Layer-3 WMA decode: Compliant with Windows Media Audio Audio section Maximum output power: 50 W × 4 Full bandwidth power (at less than 1 %...
User Manual - Page 1

..., found on the back of the unit, in the spaces designated on the product. GET0670-001A (KW/KO) Refer to read through this instruction manual. KENWOOD KDC-148 KDC-108 KDC-MP148CR CD-RECEIVER INSTRUCTION MANUAL AMPLI-TUNER LECTEUR DE CD MODE D'EMPLOI REPRODUCTOR DE DISCOS COMPACTOS RECEPTOR DE FM/AM MANUAL DE INSTRUCCIONES...
User Manual - Page 2

...Safety 2 Preparation 3 How to attach/detach the faceplate How to reset your Kenwood dealer to make sure that you purchase external components, check with your unit...you experience problems during installation, consult your Kenwood dealer. • When you can only play the CDs with: [Q]D~ [Q]~~ [Q]Nm0'5 DIGITAL AUDIO DIOITAL AUDIO nlOlTAL l;iijliM1mtil fleWritabl4!. • The ...
User Manual - Page 11

... aplayable disc into the loading slot. Try another track or change the disc. Acopy-protected file is required. Correct characters are recorded. symbols. 11 Reinsert the disc properly.... "TOC ERRORII appears. IIREADINGII keeps flashing. Elapsed playing time is playing an unsupported audio file. recording). The unit is not correct. "ERROR 9911 appears. Skip to the...
User Manual - Page 12

... terminals. • Be sure to ground this unit during installation, consult your Kenwood dealer. 12 Use only the screws provided. • Install this unit in turn...: ® Faceplate (xl) ® Escutcheon (xl) © Mounting sleeve (xl) @ Casing for faceplate (KDC-148/ KDC-MP148CR only) (xl) ® Wiring harness (xl) ® Removal tool (x2) ® Flat head screw...
User Manual - Page 13

Brown (Mute control wire) To the terminal that is grounded when either the telephone rings or during conversation. (To connect the Kenwood navigation system, consult your navigation manual.) Red (Ignition wire) Yellow (Battery wire) r Black (Ground wire) To the metallic body or chassis of the car Car ...
User Manual - Page 15

Specifications FM tuner section Frequency range: For KDC-l481 KDC-108: 200 kHz space: 87.9 MHz For KDC-MPl48CR: 107.9 MHz 50 kHz space: 87.5 MHz - 108...to-Noise ratio (1 kHz): 105 dB Dynamic range: 90 dB MP3 decode: Compliant with MPEG-1 12 Audio Layer-3 WMA decode: Compliant with Windows Media Audio Audio sedion Maximum output power: 50 W x 4 Full bandwidth power (at less than 1%THD): 22Wx4 ...
User Manual - Page 16

...could lose the authority to laser product safety. Changes or modifications to provide reasonable protection against harmful interference in a particular installation. These limits are expressly approved in hazardous radiation exposure. Kenwood Corporation 2967-3, ISHIKAWA-MACHI, HACHIOJI-SHI TOKYO, JAPAN KENWOOD CORP. CAUTION Use of controls or adjustments or performance of the FCC Rules...
User Manual - Page 18

... the product is not purchased in Ihe U.S.A. Installation or removal of original purchase. KENWOOD USA CORPORATION WHO IS PROTECTED This warranty is enforceable only by the warranty: 1. HOW TO OBTAIN WARRANTY SERVICE It your question is discussed in the U.S.A by Kenwood. o fabricante garante 0 produlo identilicado na Nota Fiscal de venda ao consumidor contra...
User Manual - Page 20

... check-ups which the serial number has been effaced, modified or removed. 5. Shipping or delivery charges to an authorized Kenwood Service Center in its audio equipment. KENWOOD AUTHORIZED SERVICE CENTERS IN MILITARY MARKET JAPAN: Yokota Kenwood Rep,; clo Marine Corps Exchange, Marine Corps Air Station, FPO Seattle 98764 Sasebo Sasebo NEX; clo OWAX, AAFES...

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