Vertex MH-50B7A Service Manual

SPEAKER MICROPHONE
MH-50 Series
Service Manual
©2011 VERTEX STANDARD CO., LTD.
The MH-50 is a Speaker Microphone designed especially for Vertex Standard transceivers*.
: Check with the latest Vertex Product Catalog for a list of the transceivers that can be used with each version.
*
Q7000315 (MH-50
A7A, B7A
PUSH SWITCH ASSY
(W/ LOCK)
M3290029 (MH-50
B7A
M3290033 (MH-50
A7A, C7A, D7A
MIC ELEMENT
RA0183500 (MH-50 )
A7A, B7A
RA0284500 (MH-50 )
C7A, D7A
PTT KNOB
RA018360A (MH-50 )
A7A, B7A, D7A
RA0182400 (MH-50 )
C7A
RUBBER KNOB (MONI)
RA0182500
CAP (EAR)
T9207208 (MH-50
CW ASSY (W/ SPECIAL SCREW)
Non-designated parts are available only as part of a designated assembly.

Specifications

Microphone Impedance: 2.2k-ohm at 1 kHz
Speaker Impedance:
Speaker Input:
Weight (approx.):
EAA75X905
) Q7000314 (MH-50
TOGGLE SWITCH ASSY
(MH-50
)
)
CS1681001
REAR CASE ASSY (w/Belt Clip)
CS1667001 (MH-50
CURL CORD ASSY (W/O SPECIAL SCREW)
S8002229
SPECIAL SCREW
)
D7A
16-ohm
max. 0.6W
220 g
VERTEX STANDARD CO., LTD.
4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan
VERTEX STANDARD
US Headquarters
10900 Walker Street, Cypress, CA 90630, U.S.A.
YAESU UK LTD.
Unit 12, Sun Valley Business Park, Winnall Close
Winchester, Hampshire, SO23 0LB, U.K.
VERTEX STANDARD HK LTD.
Unit 1306-1308, 13F., Millennium City 2, 378 Kwun Tang Road,
Kwun Tong, Kowloon, Hong Kong
VERTEX STANDARD ( AUSTRALIA ) PTY., LTD.
Tally Ho Business Park, 10 Wesley Court, East Burwood, VIC, 3151
)
C7A, D7A
: Option)
A7A, B7A
Pin 8 (3.5V:MH-50
Pin 6 (ACC:MH-50
M4090137
SPEAKER
)
A7A, B7A, C7A
S8002230
SPECIAL SCREW
MH-50 , ,
A7A B7A C7A

Connector Pinout Diagram

)
A7A, C7A
(5.0V:MH-50 )
B7A
)
A7A
(PT T:MH-50 )
B7A, C7A
Pin 5 (Select)
Pin 4 (MIC)
Pin 3 (GND)
Pin 2 (Speaker --)
Pin 1 (Speaker +)
RA0263100 (MH-50
A7A, B7A, C7A
SPECIAL SCREW
MH-50
D7A
Connector Pinout Diagram
Pin 8 (5.0V)
Pin 6 (PTT)
Pin 5 (Select)
Pin 4 (MIC)
Pin 3 (GND)
Pin 2 (Speaker --)
Pin 1 (Speaker +)
: x2 pcs)