Vertex Standard VX-160U User manual

Introduction
This manual provides technical information necessary for servicing the VX-160U and VX-180U FM Transceiver
Servicing this equipment requires expertise in handling surface-mount chip components. Attempts by non-qualif
persons to service this equipment may result in permanent damage not covered by the warranty, and may be illega
some countries.
Two PCB layout diagrams are provided for each double-sided circuit board in the transceiver. Each side of is refer
to by the type of the majority of components installed on that side (“leaded” or “chip-only”). In most cases one side
only chip components, and the other has either a mixture of both chip and leaded components (trimmers, coils, electroly
capacitors, ICs, etc.), or leaded components only.
While we believe the technical information in this manual to be correct, VERTEX STANDARD assumes no liabi
for damage that may occur as a result of typographical or other errors that may be present. Your cooperation in point
out any inconsistencies in the technical information would be appreciated.
©2007 VERTEX STANDARD CO., LTD. EC013U90C
Service Manual
VX-160U/-180U
UHF FM Transceiver
Operating Manual Reprint............................ 2
Cloning ........................................................................ 6
Specifications ................................................... 7
Exploded View & Miscellaneous Parts ...... 8
Contents
Block Diagram ................................................. 9
Circuit Description ................................11
Alignment .................................................13
Board Unit (
Schematics, Layouts & Parts )
MAIN Unit ............................................................... 17
VX-160U VX-180U
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
VERTEX STANDARD (AUSTRALIA)PTY., LTD.
Normanby Business Park, Unit 14/45 Normanby Road
Notting Hill 3168, Victoria, Australia

2
perating Manual Reprint
t s C ectControls & Connectors
C e tt s c
Controls & Connectors efor BeginBefore You Begin
e or egf B i
Before You Begin
Battery Pack Installation and Removal
UTo install the battery, hold the transceiver with your
left hand, so your palm is over the speaker and your
thumb is on the top of the belt clip. Insert the battery
pack into the battery compartment on the back of the
radio while tilting the Belt Clip outward, then close
the Battery Pack Latch until it locks in place with a
“Click.”
Dis s & di s 0 OnlDisplay Icons & Indicators (VX-180 Only)
D s s d 0 ni & i s O l
Display Icons & Indicators (VX-180 Only)
UTo remove the battery, turn the radio off and remove
any protective cases. Open the Battery Pack latch on
the bottom of the radio, then slide the battery down-
ward and out from the radio while holding the Belt
Clip.
Caution!
Do not attempt to open any of the rechargeable Ni-
Cd packs, as they could explode if accidentally short-
circuited.
Low Battery Indication
UAs the battery discharges during use, the voltage gradu-
ally becomes lower. When the battery voltage reaches
6.3 volts, substitute a freshly charged battery and re-
charge the depleted pack. The TX/BUSY indicator on
the top of the radio will blink red (on the VX-180, the
“” icon will appear on the LCD) when the battery
voltage is low.
UAvoid recharging Ni-Cd batteries often with little use
between charges, as this can degrade the charge capac-
ity. We recommend that you carry an extra, fully-
charged pack with you so the operational battery may
be used until depletion (this “deep cycling” technique
promotes better long-term battery capacity).
Microphone
Speaker
MIC/SP Jack
(
External Mic/Earphone
)
VOL/PWR Knob
CH (Channel)Selector
Monitor Button
Push To Talk
(PTT)Switch
Antenna
LED Indicator
Glows Green Monitor on
Blinking Green Busy Channel (or SQL off)
Glows Red Transmitting
Blinking Red Battery Voltage is low
Blinking Yellow Receiving a Selective Call
LCD (VX-180)
Soft KEY (VX-180)
Battery Pack Latch
8 Character Alpha-numeric
Invert ble Display
This icon is the “Low Battery” in-
dicator, which appears when the
battery voltage becomes too low
for proper operation.
This indicator confirms that
DUAL 2-TONE DECODE is active.
This indicator confirms that
DUAL WATCH is active.
This indicator confirms that
this channel will be skipped
during scan.

3
Operating Manual Reprint
Preliminary Steps
UInstall a charged battery pack onto the transceiver, as
described previously.
UScrew the supplied antenna onto the Antenna jack.
Never attempt to operate this transceiver without an
antenna connected.
UIf you have a Speaker/Microphone, we recommend that
it not be connected until you are familiar with the ba-
sic operation of the VX-160/-180.
Operation Quick Start
UTurn the top panel’s VOL/
PWR knob clockwise to turn
on the radio on.
UTurn the top panel’s CH selec-
tor knob to choose the desired
operating channel.
URotate the VOL/PWR knob to
set the volume level. If no sig-
nal is present, press and hold
in the MONITOR key (the
lower button on the left side)
for more than 1 seconds; back-
ground noise will now be heard, and you may use this
to set the VOL/PWR knob for the desired audio level.
UPress and hold in the MONI-
TOR key for more than 1 sec-
onds (or press the MONITOR
key twice) to quiet the noise
and resume normal (quiet)
monitoring.
UTo transmit, press and hold in
the PTT switch. Speak into the
microphone area of the front
panel grille (lower left-hand
corner) in a normal voice level.
To return to the Receive mode,
release the PTT switch.
UIf a Speaker/Microphone is available, remove the plas-
tic cap and its two mounting screws from the right side
of the transceiver, then insert the plug from the Speaker/
Microphone into the MIC/SP jack; secure the plug us-
ing the screws supplied with the Speaker/Microphone.
Hold the speaker grille up next to your ear while re-
ceiving. To transmit, press the PTT switch on the
Speaker/Microphone, just as you would on the main
transceiver’s body.
Note:Save the original plastic cap and its mounting
screws. They should be re-installed when not us-
ing the Speaker/Microphone.
O er oOperation
O er o
Operation
K F nctKey Functions
F nK ct
Key Functions
The VX-180 provides programmable [A], [B], and [C]
function keys, and both the VX-160 and VX-180 provide
programmable MONITOR keys. These “Soft” keys func-
tions can be customized (set to other functions), via pro-
gramming by your VERTEX STANDARD dealer, to meet
your communications/network requirements. Some fea-
tures may require the purchase and installation of optional
internal accessories. The possible Soft key programming
features are illustrated at the right, and their functions are
explained in the next chapter. For further details, contact
your VERTEX STANDARD dealer.
For future reference, check the box next to each function
that has been assigned to the Soft key on your particular
radio, and keep it handy.
Function Soft Key
[A] [B] [C]MONITOR key
None
Monitor
Low Power
Lock*
Lamp*
Channel Up*
Channel Down*
Scan
Follow-me Scan
Dual Watch
Talk Around
Add/Del*
Call/Reset
Speed Dial
TX Save Off

Yaesu VX-160U VX-180U Service Manual
Yaesu VX-160U VX-180U Service Manual
Yaesu VX-160U VX-180U Service Manual
Yaesu VX-160U VX-180U Service Manual
Yaesu VX-160U VX-180U Service Manual
Yaesu VX-160U VX-180U Service Manual
Yaesu VX-160U VX-180U Service Manual
Yaesu VX-160U VX-180U Service Manual
Yaesu VX-160U VX-180U Service Manual