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Make/Model Information:

  • Brand:   Yaesu
  • Models included:
    • Yaesu VX-120
    • Yaesu VX-170

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English (EN)
  • Number of pages:   32
  • File size:  ∼ 2.40 MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   ROYA-0015

NOTE:  This list was created by program script and may not accurately represent the text from the source pages.   For full preview please click on 'Download sample':

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2005 VERTEX STANDARD CO., LTD. EH022N90A
Technical Supplement
Specifications
Exploded View & Miscellaneous Parts
Block Diagram
Circuit Description
Alignment
Board Units (Schematics, Layouts & Parts)
Main Unit
FTD-7 DTMF Paging Unit (Option)
Introduction
This manual provides the technical information necessary for servicing the VX-120/-170 VHF FM Transceiver.
Servicing this equipment requires expertise in handing surface-mount chip components. Attempts by non-qualified
persons to service this equipment may result in permanent damage not covered by the warranty, and may be illegal in
some countries.
Two PCB layout diagrams are provided for each double-sided board in this transceiver. Each side of the board is
referred to by the type of the majority of components installed on that side (“Side A” or “Side B”). In most cases one
side has only chip components (surface-mount devices), and the other has either a mixture of both chip and leaded
components (trimmers, coils, electrolytic capacitors, ICs, etc.), or leaded components only.
While we believe the information in this manual to be correct, VERTEX STANDARD assumes no liability for damage
that may occur as a result of typographical or other errors that may be present. Your cooperation in pointing out any
inconsistencies in the technical information would be appreciated.
Contents
VX-120/-170
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 EUROPE B.V.
P.O. Box 75525, 1118 ZN Schiphol, The Netherlands
YAESU UK LTD.
Unit 12, Sun Valley Business Park, Winnall Close
Winchester, Hampshire, SO23 0LB, U.K.
VERTEX STANDARD HK LTD.
Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road,
Kwun Tong, Kowloon, Hong Kong
VX-120 VX-170
Specifications
General
Frequency Ranges: RX 137 - 174 MHz
TX 144 - 146 (148) MHz
Channel Steps: 5/10/12.5/15/20/25/50/100 kHz
Frequency Stability: 5 ppm @ 14 to 140 F (10 to +60 C)
Repeater Shift: 600 kHz
Emission Type: F2 , F3
Antenna Impedance: 50 ?
Supply Voltage: Nominal: 7.2 V DC
(Negative Ground) Operating: 6.0 ~ 16.0 V DC (EXT DC Jack)
11.0 ~ 16.0 V DC (EXT DC Jack with Charging)
Current Consumption: 125 mA (Receive, 200 mW output)
(Approx. @7.2 V) 45 mA (Standby, Saver Off)
20.5 mA (Standby, Saver On)
8 mA (Auto Power Off)
1.5 A (5 W TX)
Operating Temperature: 4 to 140 F (20 C to +60 C)
Case Size: 2.36” (W) x 4.72” (H) x 1.26” (D) (60 x 120 x 32 mm)
(W/O knob, antenna, & belt clip)
Weight: 13.8 Oz (390 g) with FNB-83, antenna, and belt clip
Transmitter
RF Power Output: 5.0 W (High) / 2.0 W (Middle) / 0.5 W (Low) (@7.2 V)
Modulation Type: Variable Reactance F2D, F3E
Maximum Deviation: 5.0 kHz (F2D, F3E)
Spurious Emission: At least 60 dB down (@ High and Middle power)
At least 40 dB down (@ Low power)
Microphone Impedance: 2 k ?
Receiver
Circuit Type: Double-Conversion Superheterodyne
Intermediate Frequencies: 1st: 21.7 MHz
2nd: 450 kHz
Sensitivity: 0.2 V for 12 dB SINAD (137-140 MHz)
0.16 V for 12 dB SINAD (140-150 MHz)
0.2 V for 12 dB SINAD (150-174 MHz)
Selectivity: 12 kHz/35 kHz (6 dB /60 dB)
AF Output: 700 mW @ 16 ? for 10 % THD (Internal Speaker)
(@ 7.5 V) 400 mW @ 8 ? for 10 % THD (EXT SP Jack)
Specifications are subject to change without notice, and are guaranteed within the 144 MHz amateur band only. Fre-
quency ranges will vary according to transceiver version; check with your dealer.
Exploded View & Miscellaneous Parts
G6090166
M3290029
MIC. ELEMENT
RA058040A
LIGHT GUIDE
RA0580700
INTER CONNECTOR
RA0578200
MIC HOLDER RUBBER
RA0709200
PANEL ASSY (VX-170)
CP8220001
REAR CASE ASSY
RA0577600
EXT CAP
RA0304300
WASHER
RA0577800
RA0577700
RA0478500
SPECIAL NUT ASSY
RA0426900
O RING
RA0577900
KNOB SCREW
RA0467600
O RING
RA061740A
RUBBER PACKING
RA0578000
RUBBER PACKING
RA0123500
LATCH NAIL
RA0337300
RA070930A
MASK SHEET
RA0700900
RUBBER KNOB
RA0580500
REFLECTOR SHEET
RA0578300
WASHER
RA057840A
RING NUT
RA057730A (x2 pcs)
RA0577400 (x2 pcs)
TERMINAL
RA0701100
WINDOW (VX-170)
RA0577100
RA057700A
RUBBER KNOB
RA0576900
DOUBLE FACE
RA0434100
M4090168
SPEAKER
RA0607200
SHEET PORON
MAIN-Unit
RA0401600
O RING
RA057720A
LIGHT GUIDE
RA0701000
PANEL (VX-170)
RA0557900
SP NET
S2000056
O RING
VXSTD P/N
U9900068
U9900136
U24110002
U9900035
U07240202
Description
TAPTITE SCREW M2X4NI#3
SPECIAL SCREW M2X2.35 4050
TAPTITE SCREW M2X10NI
TAPTITE SCREW M2X3 #1
PAN HEAD SCREW M2X4NI#2
VX-120
Non-designated parts are available
only as part of a designated assembly.
RA0721500
PANEL ASSY (VX-120)
RA0721800
RUBBER KNOB
RA072170
WINDOW (VX-120)
RA0577100
RA057700A
RUBBER KNOB
RA0576900
DOUBLE FACE
RA0434100
RA0607200
SHEET PORON
RA0721600
PANEL (VX-120)
RA0401600
O RING
RA057720A
LIGHT GUIDE
RA0557900
SP NET
M4090168
SPEAKER
RA069860A


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