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                             K E N W O O D
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                        Kenwood Service Centers

   Kenwood Service Corporation             Kenwood Service Center, East
   2201 East Dominguez Street              829 Lynnhaven Parkway, Suite 130
   Long Beach, California 90801            Virginia Beach, Virginia 23452
   Telephone 1-310-639-5300                Telephone 1-804-340-1702

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BULLETIN # 1031
MODEL: SMC-34
SUBJECT: Distorted/muffled transmit audio

Symptom: Transmit audio from the SMC-34 sounds distorted or muffled 
as compared with the audio provided by the transceivers own microphone.

Corrective Action:

Replace the front case of the microphone, add a cushion inside the 
microphone well and change the plastic sheet inside the microphone well.

Parts Required:  

Quan.    Description        Kenwood Part No.           Circuit Description

1        Front Case         A02-1696-18                 NA
1        Cushion            G13-1397-08                 NA
1        Sheet              G11-0692-08                 NA

Procedure:

1. Remove the three small black Phillip's head screws from the rear of the 
   speaker microphone.

2. Carefully remove the back cover. The Lock Switch lever and the PTT lever 
   can now be removed.

3. Remove the volume control knob by pulling straight away from the case.

4. Remove the two small black Phillip's head screws that secure the PC Board 
   assembly to the front case of the microphone. You can now gently lift the 
   PC Board assembly straight up and away from the front case.

5. Remove the packing, screen, and sheet from the front case of the speaker 
   microphone.

6. Insert the cushion, sheet, screen and backing as shown in the accompanying 
   illustrations.

7. Reverse steps 1 - 4 to reassemble the unit. 

Note: Carefully remove the rubber gasket from the old front case and 
position it in the new front case groove before replacing the rear case

Time required for this modification is .5 hours or less. 
Service code A:11 B:20 C:Add D:91


                         -------------   PC Borad
                              ---        Mic Element
                              ---        "Donut" Packing
    Cross Section             ---        Screen
       View                   ---        Sheet  (G11-0692-08
                              ---        Cushion (G11-0692-08)
                      ------------------ Front Case (A02-1696-18)