Kenwood KMC-41D User manual

SERVICE MANUAL
This product complies with the RoHS directive for the European market. This product uses Lead Free solder.
© 2014-2 PRINTED IN JAPA N
RQ023 (K) B5B-7119-00
KMC-41D
SPEAKER MICROPHONE
Document Copyrights
Copyright 2014 by JVC KENWOOD Corporation. All
rights reserved.
No part of this manual may be reproduced, translated,
distributed, or transmitted in any form or by any means,
electronic, mechanical, photocopying, recording, or other-
wise, for any purpose without the prior written permission of
JVC KENWOOD Corporation.
Disclaimer
While every precaution has been taken in the preparation
of this manual, JVC KENWOOD Corporation assumes no
responsibility for errors or omissions. Neither is any liability
assumed for damages resulting from the use of the informa-
tion contained herein. JVC KENWOOD Corporation reserves
the right to make changes to any products herein at any time
for improvement purposes.
SPECIFICATIONS
Microphone
Impedance .................................................... 2.2k(MAX)
Sensitivity ........................................–65dB ± 4dB at 1kHz
Speaker
Impedance ...........................................16±15% at 1kHz
Rating input .............................................................. 0.5W
Maximum input ......................................................... 1.5W
Dimensions (W x H x D)
............... 67.8 x 91.5 x 43.3 mm (2.67 x 3.60 x 1.70 in)
Weight ................................................. Approx. 260g/9.2oz
KMC-41D
Dressed screw (Universal)
(N08-0566-08)
Lever (PTT)
(D10-0654-18)
Plastic cabinet assy
(A02-4050-08)
Cord with plug
(E30-7657-08)

KMC-41D
2
1. Removing the cable ASSY
1) Pull out the holder that is set into the fixing bracket of the
cable ASSY, using a pair of pliers.
Holder
Fixing bracket
Waterproof line
Cable ASSY
Fig. 1
2) Completely peel off the bond (*1) glued to the cable
ASSY, using a set of nippers.
Note: Please be careful not to damage the coating of the
cable ASSY and the waterproofing line of the front case.
*1: Use the following bond:
• Manufacture name: Shin-Etsu Chemical Co., Ltd.
• Bond name: Shin-Etsu silicone One-component RTV
silicone rubbers Alcohol type KE-4898-T
Bond
Fig. 2
3) Following the procedure below, pass through the connec-
tor part of the cable ASSY into the hole of the front case
(waterproof line part).
(1) Move the three lead wires soldered onto the PCB to
the upper corner of the hole.
(2) The yellow lead wire side of the connector comes in
the inside of the front case.
White lead wire
Yellow lead wire
Three lead wires
Fig. 3
(3) Push the cable ASSY to the earphone jack side with
the connector part bent as shown in the figure, then
hook the end of the connector (white lead wire side)
into the outside corner of the hole, using your finger.
(4) Pass the connector through the hole, pushing the con-
nector (yellow lead wire side) using a pair of tweezers
or similar tool.
Note: Attach adhesive tape or rubber to the end of the
tweezers so as not to damage the connector of the
cable ASSY.
Yellow lead wire
Fig. 4
4) Pull the cable ASSY, then remove the cable ASSY from
the front case by passing the connector part through the
hole of the front case.
Fig. 5
DISASSEMBLY FOR REPAIR

KMC-41D
3
2. Installing the cable ASSY
1) Pass the connector part of cable ASSY through the hole
of the front case.
2) Move the three lead wires soldered onto the PCB to the
upper corner of the hole.
Three lead wires
Connector part of cable ASSY
Fig. 6
3) Make sure the yellow lead wire side of the connector is in
the inside of the front case.
Yellow lead wire
Fig. 7
4) Push the connector (yellow lead wire side) to the lower
corner of the hole using a pair of tweezers.
Note: Attach adhesive tape or rubber to the end of the
tweezers so as not to damage the connector of the cable
ASSY.
5) Pass the connector through the hole by pushing the con-
nector (white lead wire side) using a pair of tweezers or
similar tool.
Yellow lead wire
Fig. 8
6) Push the cable ASSY to the inside of the case, then in-
sert the fixing bracket of the cable ASSY to the hole of
the front case.
7) Fit the holder to the fixing bracket of the cable ASSY.
Fixing bracket
Holder
Fig. 9
8) Insert the cap in the earphone jack hole of the front case.
9) Apply the bond (*1) at the position shown in the figure,
then firmly attach the cable ASSY and case.
Note: Take care not to apply the bond to the waterproof-
ing line of the front case.
*1: Use the following bond :
• Manufacture name: Shin-Etsu Chemical Co., Ltd.
• Bond name: Shin-Etsu silicone One-component RTV
silicone rubbers Alcohol type KE-4898-T
Bond
Fig. 10
DISASSEMBLY FOR REPAIR

KMC-41D
4
SCHEMATIC DIAGRAM
IC101 NJM3404AM-ZB
1
2
3
4V-
5
6
7
8
V+
C117
47p
R114
2.7k
R107
12k
R113 R106
R104
R105
R109
10k
R108
10k
R101
2.2k 2.7k 22k
100k
68k
R102
1k
1k
R103
R110
10k
R111
27k
R112
0
C104
1000p
C103
1000p
C108
10u
C107
C106
1u
1u
C109
1u
C105
1u
C116
0.01u
C101
1u
C118
470p
C120
470p
C119
470p
L101
L104
L103
R116
0
CN101
9
MIC
8
MICE
7
5V
6
SP+
5
SP-
4
PTT
3
E
2
PF
1
TX_LED
CN153
CN154
2 1
C121
470p
–+
+–
SP
PF1 PF2
MAIN UNIT
main MC EC MC
L13
L92-0162-05
L11
L92-0408-05
L2
L92-0163-05
L6
L92-0408-05
L7
L92-0408-05
L12
L92-0162-05
L10
L92-0162-05
L9
L92-0162-05
L8
L92-0163-05
SP+ SP- MIC MICE E PTT PF 5V TXLED
10
7
4
5
13
14
1
6
3
8
11
9
12
2
SUB UNIT
C201
470p
C200
470p
L202
L203
C102
47p
L200
L201
L92-0140-05 L92-0140-05 L92-0138-05
L92-0140-05
L92-0140-05
L92-0163-05
L92-0163-05

KMC-41D
5
EXPLODED VIEW
22
14
12
12
2
7
16x2
26 25x2
29
20
1
17
13
4
5
18
10
A
21
30
23
28
9
15
701
702
703
704x3
705x2
706
708
710x5
711x4
712
713
714 715 716
717
Parts with the exploded numbers larger than 700 are not supplied.

KMC-41D
JVC KENWOOD Corporation
Communications Equipment Div
KMC-41D
Ref. No. Address Parts No. Description Destina-
tion
KMC-41D
1 A02-4050-08 PLASTIC CABINET ASSY
2 A82-0073-08 REAR PANEL
4 B43-1616-08 BADGE (KENWOOD)
5 B4C-0005-00 BADGE (KMC-41D)
7 D10-0654-18 LEVER (PTT)
9 E11-0712-08 3.5D PHONE JACK
10 E30-7657-08 CURL CABLE ASSY
12 G10-1358-08 FIBROUS SHEET
13 G10-1386-08 FIBROUS SHEET (PHONE JACK)
14 G11-4450-08 SHEET (LEAK TEST)
15 G11-4452-08 SHEET (PHONE JACK)
16 G13-2241-08 CUSHION (PTT)
17 G53-1779-08 PACKING (PTT)
18 G53-1784-08 PACKING (BOTTOM CAP)
20 J19-5515-08 HOLDER (PTT)
21 W0C-0024-00 PRINTED WIRING BOARD ASSY
22 J29-0740-08 BELT HOOK ASSY
23 J99-0729-08 ADHESIVE SHEET (JACK COVER)
A N08-0566-08 DRESSED SCREW (UNIVERSAL)
25 S70-0471-08 TACT SWITCH (PF)
26 S70-0511-08 TACT SWITCH (PTT)
28 T07-0359-18 SPEAKER
29 T91-0584-08 MIC ELEMENT (MAIN MIC)
30 T91-0660-08 MIC ELEMENT (SUB MIC)
PARTS LIST