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Icom IC-4088E

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User reviews and opinions

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Comments to date: 10. Page 1 of 1. Average Rating:
truenorthern 1:28pm on Wednesday, October 27th, 2010 
My first IEM were "Koss Spark Plug" ( 2 pairs ) and I thought they were good, but after trying EP-630 I forgot "Plugs" like a horrible nightmare. These came with my Dell XPS 1530 and I tried them for the first time and really was impressed.
crrrum 10:48am on Saturday, October 9th, 2010 
Sound quality??? After reading other review I am extremely surprised at what I am listening to. Amazing Creative EP-630 In-Ear Noise-Isolating Headphones (Black) I got a pair of these when I ordered my XPS computer system back in 2008. Small price for big sound For $16.00, what can you say! I was quite pleased with the sound for such a small price.
begem0t 8:38pm on Tuesday, August 31st, 2010 
"This is my 3rd tape adapter for my iPod - first was Monster Cable, then Dynex (?) - which was the worst, and now this Sony one. "This sony cassette player with the attached ipod wire works really well. It is also easy to use.
ericsp 4:25am on Wednesday, August 25th, 2010 
The only issue that I have found is that the rubber ear buds can compress at times - I simply pull them back out, but it can be anoying at times.
Bill M 1:26pm on Saturday, July 31st, 2010 
The silicone fittings are changeable so you can choose the right size for your ears. Bad thing about that is that they tend to fall off now and then.
apalach 5:23pm on Saturday, June 26th, 2010 
Not only do I like bacon, but I love the way it smells when it is cooking Inexpensive, but sound great The wire is a little thin. Not a big deal. i used egg saver and got it in 4 days....not that bad as i thought it would be 1. good bass ; 2. crisp sound ; 3.
pakman 12:37am on Saturday, June 19th, 2010 
Placement of the headset in the ear of the Creative EP630 with coverage from rubber provide a fantastic experience audio in MP3 format.
locochico 7:23pm on Saturday, May 1st, 2010 
Creative EP-830 Noise Isolating Earphones Very disappointed with these earphones, i bought them off the back of very good reviews i had read.
cbsly 5:17am on Saturday, May 1st, 2010 
I must be a compulsive headphone buyer. I have a lot of headphones at home, most inexpensive and not all are being used.
bryankrone 7:09am on Saturday, March 27th, 2010 
I use this in my 1998 car with a tape deck to connect my ipod. I find the fm transmitters annoying, and unreliable. This is much simpler.

Comments posted on www.ps2netdrivers.net are solely the views and opinions of the people posting them and do not necessarily reflect the views or opinions of us.

 

Documents

doc0

IC-4088E.qxd

03.9.2 20:44

Page A (1,1)

INSTRUCTION MANUAL
LPD FM HANDHELD TRANSCEIVER

i4088E

Page i (1,1)

FOREWORD

Thank you for purchasing the IC-4088E LPD (Low Power Device) FM transceiver. This LPD FM transceiver meets the European LPD specification (EN 300 220). This transceiver is designed for those who require top-grade quality, performance and outstanding reliability under the most demanding conditions.
D FEATURES Free of user-license and applications Voice scrambler function for communication privacy External DC-IN jack for both operation and battery charging
(Optional BC-149D or CP-18E is required)
All 69 LPD channels are available 38 convenient group channels
I ATS (Automatic Transponder System)
This convenient function automatically checks station availability within the operating range, and alerts you via function display indication. (p. 20) In addition, a manual transponder is also available for GROUP MODE operation to check availability of stations in a specied group within the operating range. In this case, the transceiver alerts you via beeps. (p. 15)
I WEATHER-RESISTANT* CONSTRUCTION
Weather-resistant* construction is employed, and this unit can be used in a wide range of applications. *Meets JIS water-protection specication grade 4.

Page ii (1,1)

I GROUP MODE (BUILT-IN CTCSS: Continuous Tone Coded Squelch System)
CTCSS encoder/decoder are standard, providing quiet stand-by. Audio (voice) signals are output only when a signal with matched CTCSS tone signal is received. This is very helpful for group communications. In addition, 38 different CTCSS frequencies are available. (p. 12)
I 2 types of Ring function
The Smart-Ring function and the Call-Ring function are available for smart and simple station calls providing a telephonestyle ring when called. 10 different ringing tones are available. (p. 18)

SUPPLIED ACCESSORY

Belt clip 1
Icom, Icom Inc. and the are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries. ii

Page iii (1,1)

IMPORTANT
READ ALL INSTRUCTIONS carefully and completely before using the transceiver. SAVE THIS INSTRUCTION MANUAL This instruction manual contains important operating instructions for the transceiver.

PRECAUTION

RWARNING! NEVER hold the transceiver so that the
antenna is very close to, or touching exposed parts of the body, especially the face or eyes, while transmitting. The transceiver will perform best if the microphone is 5 to 10 cm away and the transceiver is vertical.
RWARNING! NEVER operate the transceiver with a
headset or other audio accessories at high volume levels. Hearing experts advise against continuous high volume operation. If you experience a ringing in your ears, reduce the volume or discontinue use.
NEVER attempt to charge alkaline cell batteries. Be aware
that external DC power connections will charge batteries inside the battery case. This will damage not only the battery case but also the transceiver.
DO NOT push the PTT when not actually desiring to transmit.

Page iv (1,1)

PRECAUTION continued
USE the optional AC adapter or cigarette lighter cable only for both operating the transceiver and charging the battery. Other manufacturers AC adapter, cigarette lighter cable or DC power cable with external power supply may damage the transceiver.
Place the unit in a secure place to avoid inadvertent use by children.
DO NOT operate the transceiver near unshielded electrical
blasting caps or in an explosive atmosphere.
AVOID using or placing the transceiver in direct sunlight or in
areas with temperatures below 10C or above +55C. The use of non-Icom battery packs/chargers may impair transceiver performance and invalidate the warranty. Even when the transceiver power is OFF, a slight current still ows in the radio. Remove the alkaline battery cells or battery pack from the transceiver when not using it for a long time. Otherwise, the installed batteries will become exhausted. When the battery voltage becomes below 3.24 V, the performance of the transceiver cannot be guaranteed due to the regulation.

Page v (1,1)

TABLE OF CONTENTS
FOREWORD i SUPPLIED ACCESSORY ii IMPORTANT iii PRECAUTION iiiiv TABLE OF CONTENTS v 1 PREPARATION 1 I Belt clip attachment 1 I Battery installation PANEL DESCRIPTION 24 I Switches, controls, keys and connectors 2 I Function display BATTERY CHARGING 57 I Battery caution 5 I Charging connections BASIC OPERATION 89 I Power ON 8 I Adjusting the volume 8 I Selecting the operating channel RECEIVE AND TRANSMIT GROUP MODE (CTCSS) 1213 I Setting the group code SCAN FUNCTION RING FUNCTIONS 15 I Smart-Ring 15 I Call-Ring OTHER FUNCTIONS 1621 I Voice scrambler function 16 I Initial set mode 16 I Lock function 19 I Low battery indicator 19 I Auto power save 19 I ATS (Automatic Transponder System) 20 I Resetting the transceiver 20 I Optional HM-75A functions SPECIFICATIONS OPTIONS CE 25

Page 1 (1,1)

PREPARATION

I Belt clip attachment

Attach the belt clip using the supplied screw. Conveniently attaches to a belt.

I Battery installation

Install 3 R6 (AA) size alkaline cell batteries or the optional BP-202 BATTERY PACK as illustrated below. qRemove the battery case cover from the transceiver. w Install 3R6 (AA) size alkaline cell batteries or BP202.
Be sure to observe the correct polarity. BP-202

Alkaline cells

NOTE: Keep battery contacts clean. Its good idea to clean battery terminals once a week.

Page 2 (1,1)

I Switches, controls, keys and connectors

PANEL DESCRIPTION

q w Antenna

e r t y u

Function display (p. 4) i

Microphone Speaker

Page 3 (1,1)
q EXTERNAL SPEAKER AND MICROPHONE JACKS Connect an optional speaker-microphone or headset, if desired. w VOLUME CONTROL [VOL] Rotate clockwise to increase and counterclockwise to decrease volume. e PTT SWITCH [PTT] Push and hold to transmit; release to receive. r MODE SWITCH [MODE] Push to enter and select set mode for group (p. 12) and voice scrambler code. (p. 16) Push and hold for 1 sec. to turn the monitor function ON and OFF. (p. 8) t CHANNEL UP SWITCH [Y] Push to increment the operating channel. Push and hold to increment the operating channel continuously. While scanning, changes scanning direction. (p. 14) y CHANNEL DOWN SWITCH [Z] Push to decrement the operating channel. Push and hold to decrement the operating channel continuously. While scanning, changes scanning direction. (p. 14) u POWER SWITCH [PWR] Push to turn the power ON. Push and hold this key to toggle the key lock function ON/OFF. (p. 19) i EXTERNAL DC IN JACK [DC 6V] (p. 6) Connects the optional AC adapter or cigarette lighter cable for both operation and battery charging.

Page 4 (1,1)

I Function display

qw e !0 r t

q KEY LOCK INDICATOR Appears during the key lock function ON. w BUSY INDICATOR Appears while receiving a signal or when the squelch is open. e VOICE SCRAMBLER INDICATOR Appears while the voice scrambler function is in use. r AUTO POWER OFF INDICATOR Appears while the auto power off function is ON. t LOW BATTERY INDICATOR Appears or blinks when the battery decreases to a specied level. y GROUP NUMBER INDICATOR Indicates the selected group number during the group function ON. u CHANNEL NUMBER INDICATOR Indicates the selected operating channel number. i POWER ON INDICATOR Appears while the power is ON. o ANSWER BACK INDICATOR Appears when you and your group are in the conversation area. Blinks when you or your group is out of the conversation area. !0 TRANSMIT INDICATOR Appears during PTT ON.

Page 5 (1,1)

BATTERY CHARGING

I Battery caution

CAUTION NEVER short the terminals. NEVER mix old and new batteries.

NEVER incinerate used battery cells. Internal battery gas may cause explosion. Make sure all battery cells are the same brand, type and capacity. AVOID over charging The BP-202 can be charged during operation when the AC adapter or the optional cigarette lighter cable is connected. To prevent over charging, the IC-4088E has charging timer that automatically disconnecting the charging line electronically after 15 hours from charging. However, the charging timer will reset and start charging again when disconnect then re-connecting the AC adapter or CP-18E more than 1 min. interval. Recommended temperature range for charging: +10C to +40C The optional BP-202 BATTERY PACK includes rechargeable Ni-Cd batteries and can be charged approx. 300 times. Charge the battery pack before rst operating the transceiver or when the battery pack becomes exhausted. If the battery pack seems to have no capacity even after being fully charged, completely discharge it by leaving the power ON all day. Then, fully charge the battery pack again. If the battery pack still does not retain a charge (or very little), a new battery pack must be purchased.

D Operating period

Depending on the installed battery, the operating period of the transceiver varies. Refer to p. 22 for operating period details.

Page 6 (1,1)

I Charging connections
D Regular charging with the BC-149D, CP-18E
Connect the optional BC-149D AC ADAPTER or CP-18E CIGARETTE LIGHTER CABLE to [DC 6V]. Charging period: approx. 15 hours
Optional CP-18E Cigarette lighter cable with DC-DC converter to cigarette lighter socket

to [DC 6V] jack

Optional BC-149D

to AC outlet

IMPORTANT!: Use the BC-149D or CP-18E ONLY. Other type of AC adapter, cigarette lighter cable or DC power cable with an external power supply may damage the transceiver. The optional BP-202 can only be charged other AA (R6) size rechargeable Ni-Cd cannot be charged. BE SURE to disconnect the CP-18E from the cigarette lighter socket when charging is nished, because, a slight current still follows in the CP-18E and the vehicles battery will become exhausted.

Page 7 (1,1)

D Rapid charging with the BC-119N+AD-105
q Insert the optional AD-105 DESKTOP CHARGER ADAPTER into the charging slot of the BC-119N. w Insert the battery pack, either by itself or attached to the transceiver, into the charger.

IC-4088E BP-202

Turn the power OFF! When the installed Ni-Cd battery is nearly exhausted and the function display blinks in intermittently, push [PWR] until the transceivers power goes OFF. *NOTE: Put the Ni-Cd battery adapter into the AD-105 rear slot when the BP-202 is attached to the transceiver.

* AD-105

BC-119N NOT used: Fix the 3-pin connector to the bottom of the charger with the adhesive tape, etc., to prevent catching or touching the 3-pin connectors terminals with the adapters leads, etc. 7

AC adapter

Page 8 (1,1)

I Power ON

Push [PWR] for 1sec. to turn the power ON.
and operating channel number appear on the display.

BASIC OPERATION

I Adjusting the volume
q Push and hold [MODE] for [VOL] 1sec. to open the squelch.
indicator appears on the display while the squelch is Appears open.
w Adjust the audio to a suitable level using [VOL]. e Push and hold [MODE] for 1sec. to close the squelch. [MODE]

What is squelch?

A squelch circuit allows muting of undesired noise while receiving no signal and emit audio while receiving signals. This provides quiet standby. The [MODE] key changes the squelch setting. This is useful to listen to weak signals that do not open the squelch.

Page 9 (1,1)

I Selecting the operating channel
Push [Y] or [Z] keys several times until the desired operating channel number appears on the display. While pushing and holding [Y] or [Z] keys, the displayed channel changes continuously until channel number 1 appears. [Y] To keep the automatic selection, release the [Y] or [Z] keys then [Z] push and hold them again. When displayed channel stops at channel number 1, a beep is emitted. NOTE: The transceiver has 69 operating frequency channels. The selected channel is memorised when the transceiver is turned off.

Page 10 (1,1)

RECEIVE AND TRANSMIT
q Select the desired operating channel with [Y]/[Z]. When a signal is received: indicator appears on the display. Squelch opens and audio is emitted from the speaker. [Y]
- Further adjustment of [VOL] may be necessary at this point. [Z]
w Push and hold [PTT] to transmit then speak into the microphone.
Do not hold the transceiver too Appears close to your mouth or speak too loudly. This may distort the sig- [PTT] nal. The transmit indicator appears on the display.
e Release [PTT] to return to receive. IMPORTANT: To maximize the readability of the transmitted signal, pause a few sec. after pushing [PTT], hold the transceiver 10 to 15 cm from your mouth and speak at a normal voice level. NOTE: The transceiver has an auto power save function to conserve the battery power. The power save function activates automatically when no signal is received for 5 sec.

Page 11 (1,1)

Talk Range The IC-4088E is designed to maximize performance and improve transmission range in the eld. However, the single most important factor in transmit range (talk power) is the surrounding environment. These radios are line of sight radios and as such, transmission range are influenced by the degree to which you can see the other communicating party. Large concrete structures and heavy foliage or transmission from inside a building or vehicle will reduce the talk power range. Optimal range: wide, open areas free of obstructions. Medium range: large buildings or trees blocking your line of sight. Minimum range: mountainous areas or areas of heavy foliage.

Page 12 (1,1)

I Setting the group code
The IC-4088E is equipped with 38 group codes. Group mode operation provides communication with silent standby since you will only receive calls from group members using the same group number. First of all, set the same group code number for all group members transceivers. To turn ON the group mode operation: q Push [MODE] to enter set mode.
- - - (group mode OFF) appears on the display.

GROUP MODE (CTCSS)

w Push [Y] or [Z] to select the de- [MODE] sired code number. [Y] e Push [MODE] twice to set the group code number and exit set [Z] mode. To cancel the group mode operation: q Push [MODE] to enter set mode.
Channel number disappears on the display.
w Push [Y] or [Z] to select - - - (group mode OFF). e Push [MODE] twice to cancel the group mode and return to operating condition.
NOTE: Only stations with the same group channel number can be heard during group mode operation, even when the busy indicator appears on the display.

Page 13 (1,1)

D CTCSS code table
CH Freq. 67.0 71.9 74.4 77.0 79.7 82.5 85.4 88.5 91.5 94.8 CH Freq. 97.4 100.0 103.5 107.2 110.9 114.8 118.8 123.0 127.3 131.8 CH Freq. 136.5 141.3 146.2 151.4 156.7 162.2 167.9 173.8 179.9 186.2 CH --Freq. 192.8 203.5 210.7 218.1 225.7 233.6 241.8 250.3 OFF (unit: Hz)
What is CTCSS (Continuous Tone Coded Squelch System) GROUP MODE ? CTCSS (Continuous Tone Coded Squelch System) GROUP MODE allows communication with silent stand by. Only signals containing a specic group code can open the squelch. This conveniently eliminates unwanted audio and is useful in group activities or security related activities where unwanted output can be a problem. Note that CTCSS group mode is not privateanyone can receive your calls. The IC-4088E is equipped with 38 tone codes for CTCSS GROUP MODE use. Selecting a code applies it to all 69 operating channels. Each push of [PTT] superimposes your group code over your transmit signal; and, only signals containing the same code can open your squelch. To temporarily hear all signals (including noise) push and hold [MODE]. Do not use CTCSS GROUP MODE if you want to be able to hear signals on all channels.

Page 14 (1,1)

SCAN FUNCTION
Scanning is an efcient way to locate signals quickly over all channels. Select scan resume condition in advance, using Initial Set Mode (p. 17)

CH 1 CH 2

D Starting the scan
While pushing [Y], push [Z] to start the scan. - ashes. While pushing [Z], pushing [Y] also starts the scan. Push [Z] or [Y] to change the scanning direction or resume [Y] the scan manually. To cancel the scan, push [Z] [Z] (or [Y]) while [Y] (or [Z]) is pushed, or push [PTT].

Page 15 (1,1)

RING FUNCTIONS

I Smart-Ring

The ring function has an answer back feature. This allows conrmation of whether or not a call has reached the receiving party even if the operator is temporarily away from the transceiver. q Set the same group channel number for all of the group transceivers. (See p. 12) w While pushing [PTT], push [Y].
A beep is emitted and blinks [PTT] on the display.

e Release the [PTT].

When a member of a specific [Y] group answers a call, the transceiver emits beep tones for 10 sec. and blinks . When no answer comes back, the transceiver emits short faint beep tones.
r Push [PTT] to answer and to stop the beeps and ashing. NOTE: This function is available only when the called station has set the same group number and the same operating channels as you.

I Call-Ring

Sends the ring tones during transmit mode. While pushing [PTT], push [Z] [PTT] to send a ring tone.
The ring tone is emitted while pushing [Z]. The microphone signal is automatically cut while pushing [Z]. [Z] 15

Page 16 (1,1)

I Voice scrambler function
The voice scrambler function provides communication privacy. q Push [MODE] twice to select voice scrambler setting mode.
Sr- appears on the display.

OTHER FUNCTIONS

w Push [Y]/[Z] to turn the function ON and OFF.
appears when the voice scrambler is activated.
e Push [MODE] to exit voice scrambler setting mode. NOTE: All transceivers in a specic group MUST turn ON the voice scrambler function. Otherwise the communication will not possible.

I Initial set mode

Initial set mode is accessed at power ON and allows the setting of seldom changed settings. In this way the user can customize transceiver operations to suit specic preferences and operating style.
D Entering initial set mode
q While pushing [MODE], push [PWR] for 1 sec. to enter initial set mode. w Push [MODE] to select the desired item. e Push [Y]/[Z] to select the condition or value as desired. r Push [PWR] to exit initial set mode.

[PWR] [MODE] [Y] [Z]

Page 17 (1,1)

D Beep tones ON/OFF

Confirmation beep tones normally sound when a key is pushed. These can be turned ON or OFF. ON (on) OFF (oF) : Emits conrmation beep. : No conrmation beep.

D Scan resume type

Select the scan resume type from timer scan and pause scan. Timer scan (tS) : Scan resumes after the specied time period even signal is received. Pause scan (PS): Scan pauses until the signal disappears.

D Time-out timer

The time-out timer limits continuous transmission time period to prevent accidental prolonged transmission, such as when using the PTT hold function. The time period can be specified within 130 min. in 1 min. steps.

D Auto power OFF timer

When signal is received, or no operation is performed for the set period, the transceiver turns power OFF automatically. 30 min., 1 and 2 hours timers are power off function is in use. available.

Appears when the auto

Page 18 (1,1)

D Ring tone type

Ring tone is selectable with 10 different individual sounds.

D LCD backlight

The IC-4088E has LCD backlight light for nighttime operation, and the lighting condition can be selected to suits a specic preference, from Auto, ON and OFF. Auto (At) : Lights when any switch, except [PTT], is pushed. When no key operation is performed for 5 sec., the backlight goes OFF. : Lights continuously. : Never lights.

ON (on) OFF (oF)

Page 19 (1,1)

I Lock function

This function electronically locks all keys and switches to prevent accidental channel changes and function access. Continue to hold [PWR] down for 2 sec. after power ON to turn the lock function ON and OFF.
appears on the display. - Only [PWR] and [PTT] are functional. appears when the - The Ring function is also available. lock function is in use. (See p. 15)

I Low battery indicator

Appears when the battery is nearing exhaustion.
A warning beep is emitted while turning the power ON.
Blinks when battery replacement is Appears when the battery is nearing exhaustion. necessary.
When the indicator blinks, the trans- Blinks when battery ceiver may not be operated. (Not replacement is necessary. guaranteed)

Auto power save

The power save function reduces the current drain to conserve battery power.
- The function automatically turns ON when no operation is performed and no signal is received for 5 sec.

Page 20 (1,1)

This allows the user to conrm whether or not a call has reached the receiving party even if the operator is temporarily away from the transceiver. No Ring tone is emitted with this function. While pushing [PTT], push [MODE] to turn the function ON and OFF.
appears on the display. The transceiver starts to send a [PTT] searching signal every 60 sec. - When the transceiver receives an answer back signal, stays on the display until the [MODE] next search transmit. - If no reply is received, blinks until the next search transmit.
NOTE: Above setting is for the calling station only. A called party automatically sends an answer back signal without any presettings. All IC-4088Es operating on the same operating channel will answer back to the call in the surroundings communications area.
Resetting the transceiver
Initialize the operating conditions before using the transceiver for the rst time, or if the function display shows erroneous information. While pushing [Z] and [MODE], push [PWR] for 1 sec. to initial- [PWR] ize the transceiver. CAUTION: Resetting the transceiver returns all settings to [Z] their defaults.

[MODE]

Page 21 (1,1)
I Optional HM-75A functions
The optional HM-75A allows remotely selected operating channels, open the squelch, etc. The switches on the HM-75A function as follows. CAUTION: When connecting the HM-75A to the transceiver, make sure that power to the transceiver is turned OFF, otherwise the transceiver may malfunction. D Switch action

SWITCH A B UP NORMAL Smart-Ring Open squelch Change the operating channel number up. Change the operating channel number down. While holding HM-75As [PTT] No function No function Smart-Ring

Call-Ring

PTT switch
Lock switch: Locks all switches except [PTT]

OFF LOCK

Earphone jack

Page 22 (1,1)

10 SPECIFICATIONS
No. of operating Ch. : 69 (simplex; 433.075434.775 MHz) Mode : FM (F3E) Frequency stability : 2.5 kHz Frequency resolution : 25 kHz Power supply requirement : 3 AA (R6) alkaline, BP-202, BC-149D (negative ground) or CP-18E Current drain : Less than 140 mA Operating temp. range : 10C to +55C No. of CTCSS freq. : 38 Dimensions : 52.5(W)102.5(H)26.9(D) mm
(projections not included)
Weight (approx.) Output power Ext. mic. connector Sensitivity (12 dB SINAD) Audio output power

(at 4.5 V DC)

Ext. speaker connector Battery life
(Tx:Rx:Standby=1:1:8) *LR6(G) is used
: 200 g (including 3AA (R6) batteries) : Less than 10 mW ERP : 3-conductor 2.5 (d) mm/2.2 k : Less than 0.2 V; 14 dB : More than 100 mW at 10 % distortion with an 8 load : 3-conductor 3.5 (d) mm/8 : Battery type Battery life
3 alkaline cells* BP-202 approx. 65 hrs. approx. 20 hrs. approx. 2 km approx. 12 km approx. 500 m approx. 100200 m

Communication range*

Wide, open space with good visibility Suburbs Highways City areas
*Communication ranges listed above may differ depending on weather conditions, etc.
All stated specications are subject to change without notice or obligation.

Page 23 (1,1)

SPECIFICATIONS
D Channel number and group number
Use this page to record a group operating channel number (see p. 9) and group code number (p. 12) for your reference.
Operating channel number Group code number

Channel frequency list

CH 23 Freq.(MHz) 433.075 433.100 433.125 433.150 433.175 433.200 433.225 433.250 433.275 433.300 433.325 433.350 433.375 433.400 433.425 433.450 433.475 433.500 433.525 433.550 433.575 433.600 433.625 CH 46 Freq.(MHz) 433.650 433.675 433.700 433.725 433.750 433.775 433.800 433.825 433.850 433.875 433.900 433.925 433.950 433.975 434.000 434.025 434.050 434.075 434.100 434.125 434.150 434.175 434.200 CH 69 Freq.(MHz) 434.225 434.250 434.275 434.300 434.325 434.350 434.375 434.400 434.425 434.450 434.475 434.500 434.525 434.550 434.575 434.600 434.625 434.650 434.675 434.700 434.725 434.750 434.775

Page 24 (1,1)

11 OPTIONS
BP-202 Ni-Cd BATTERY PACK 3.6V/700 mAh Ni-Cd battery pack. BC-119N DESKTOP CHARGER + AD-105 DESKTOP CHARGER ADAPTER Rapidly charges battery pack in 1 to 1.5 hrs. An AC adapter is packed with the BC-119N. The AD-105 must be used with the BC-119N for charging the battery pack. The CP-17L or OPC-515 can be used instead of the supplied AC adapter. (p. 7) BC-149D AC ADAPTER Regularly charges installed BP-202 in 15 hours (approx.). Operation for both transmit and receive also possible with this adapter. Output voltage: 6 V DC, Current capacity: 1 A CP-18E CIGARETTE LIGHTER CABLE Allows you to operate the transceiver through a 12 V cigarette lighter socket, and also charges the installed battery regularly. A DC-DC converter is built-in. HM-46/HM-75A/HM-131 SPEAKER MICROPHONES HM-46: Compact size with transmission LED indicator. HM-75A: Remote control capability. (See p. 21 for details.) HM-131: Compact and durable construction. HM-128 EARPHONE MICROPHONE HS-85 HEADSET Over-head arm style headset. VOX and one-touch PTT functions are available. VS-1 VOX/PTT CASE + HS-94/HS-95/HS-97 Separated VOX/PTT unit and one of the following microphone unit is required additionally.

HS-94 Earhook type HS-95 Neck-arm type HS-97 Throat microphone

Page 25 (1,1)

DECLARATION OF CONFORMITY

We Icom Inc. Japan

1-1-32, Kamiminami, Hirano-ku Osaka 547-0003, Japan Declare on our sole responsibility that this equipment complies the essential requirements of the Radio and Telecommunications Terminal Equipment Directive, 1999/5/EC, and that any applicable Essential Test Suite measurements have been performed. Kind of equipment: Type-designation: LPD FM TRANSCEIVER
Dsseldorf 10th Nov. 2002 Place and date of issue

Icom (Europe) GmbH

Himmelgeister strae 100 D-40225 Dsseldorf Authorized representative name
Version (where applicable): This compliance is based on conformity with the following harmonized standards, specifications or documents: i) EN (2000-09) ii) EN 301 489-1 (August 2000) iii) EN 301 489-3 (Nov 2001) iv) EN 60950 (1992-08) +A11:1997 v) EN 50 371: 2002
Icom (Europe) GmbH T. Maebayashi General Manager

Signature

D ABOUT CE
The IC-4088E comply with the essential requirements of the European Radio and Telecommunication Terminal Directive 1999/5/EC. This warning symbol indicates that this equipment operates in nonharmonised frequency bands and/or may be subject to licensing conditions in the country of use. Be sure to check that you have the correct version of this radio or the correct programming of this radio, to comply with national licensing requirement.

Page 26 (1,1)

<Intended Country of Use> I GER I FRA I ESP I SWE I AUT I NED I POR I DEN I GBR I BEL I ITA I FIN I IRL I LUX I GRE I SUI I NOR
A-6222D-1EX-w Printed in Japan 20022003 Icom Inc.
1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan

doc1

SERVICE MANUAL

LPD FM TRANSCEIVER
1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan
S-13910IZ-C1 Printed in Japan 2002 by Icom Inc.

INTRODUCTION

This service manual describes the latest service information for the IC-4088E LPD FM TRANSCEIVER at the time of publication. To upgrade quality, all electrical or mechanical parts and internal circuits are subject to change without notice or obligation.

DANGER

NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 5.0 V. Such a connection could cause a fire or electric hazard. DO NOT expose the transceiver to rain, snow or any liquids. DO NOT reverse the polarities of the power supply when connecting the transceiver. DO NOT apply an RF signal of more than 20 dBm (100mW) to the antenna connector. This could damage the transceiver's front end.

ORDERING PARTS

Be sure to include the following four points when ordering replacement parts: 1. 2. 3. 4. 10-digit order numbers Component part number and name Equipment model name and unit name Quantity required

<SAMPLE ORDER>

5030002520 LCD L2-0494TAY IC-4088E Main unit 8810009560 Screw PH BO M2x6 ZK IC-4088E Chassis 5 pieces 10 pieces
Addresses are provided on the inside back cover for your convenience.

REPAIR NOTES

1. 2. 3. 4. 5. 6. 7. Make sure a problem is internal before disassembling the transceiver. DO NOT open the transceiver until the transceiver is disconnected from its power source. DO NOT force any of the variable components. Turn them slowly and smoothly. DO NOT short any circuits or electronic parts. An insulated turning tool MUST be used for all adjustments. DO NOT keep power ON for a long time when the transceiver is defective. DO NOT transmit power into a signal generator or a sweep generator. ALWAYS connect a 30 dB to 40 dB attenuator between the transceiver and a deviation meter or spectrum analyzer when using such test equipment. 8. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver.

TABLE OF CONTENTS

SECTION SECTION SECTION SECTION

4-1 4-2 4-3 4-4 4-5

SPECIFICATIONS INSIDE VIEWS DISASSEMBLY INSTRUCTIONS CIRCUIT DESCRIPITON
RECEIVER CIRCUITS.4-1 TRANSMITTER CIRCUITS.4-2 PLL CIRCUITS.4-2 POWER SUPPLY CIRCUITS.4-3 PORT ALLOCATIONS.4-3

SECTION

5-1 5-2

ADJUSTMENT PROCEDURES

PREPARATION.5-1 ADJUSTMENT.5-2

SECTION SECTION

7-1 7-2
PARTS LIST MECHANICAL PARTS AND DISASSEMBLY
CABINET PARTS.7-1 ACCESSORIES.7-1

9-1 9-2

SEMI-CONDUCTOR INFORMATION BOARD LAYOUTS
MAIN UNIT.9-1 RF UNIT.9-3

10 BLOCK DIAGRAM 11

11-1 11-2

VOLTAGE DIAGRAM

MAIN UNIT.11-1 RF UNIT.11-2

SECTION 1

GENERAL
Number of channel Type of emission Freqency stability Freqency resolution

SPECIFICATIONS

: 69 channels (simplex; 433.075434.775 MHz) : 16K0F3E (FM) : 2500 Hz (5.7 ppm) : 25 kHz : 3 AA (R6) dry, alkaline; or BP-202 (optionl battery pack) : Less than 140 mA : 10C to +55C : 38(67.0250.3 Hz) : 52.5 (W) 102.5 (H) 26.5 (D) mm : 200 g
Power supply requirement (negative ground) Current drain Operating temperature range Number of CTCSS frequency Dimensions (projections not included) Weight (included 3 cells)

TRANSMITTER

Output power Modulation system Max. frequency deviation Spurious emissions Adjacent channel power External microphone connector : 10 mW : Variable reactance frequency modulation : 5.0 kHz : 0.25 W : More than 47 dB : 3-conductor 2.5(d) mm/2.2 k

RECEIVER

Receiving system Intermediate frequency Sensitivity (12 dB SINAD) Adjacent channal selectivity Spurious response Intermodulation Audio output power External SP connector : Double conversion superheterodyne system : 1st; 21.7 MHz 2nd; 450 kHz : 0.2 V; 14 dB : More than 40 dB : More than 40 dB : More than 40 dB : 100mW at 10% distortion with an 8 load : 2-conductor 3.5(d) mm(18)/8 k
All stated specifications are subject to change without notice or obligation.

CHANNEL FREQUENCY LIST

Channel No. 23 Frequency (MHz) 433.0750 433.1000 433.1250 433.1500 433.1750 433.2000 433.2250 433.2500 433.2750 433.3000 433.3250 433.3500 433.3750 433.4000 433.4250 433.4500 433.4750 433.5000 433.5250 433.5500 433.5750 433.6000 433.6250 Channel No. 46 Frequency (MHz) 433.6500 433.6750 433.7000 433.7250 433.7500 433.7750 433.8000 433.8250 433.8500 433.8750 433.9000 433.9250 433.9500 433.9750 434.0000 434.0250 434.0500 434.0750 434.1000 434.1250 434.1500 434.1750 434.2000 Channel No. 69 Frequency (MHz) 434.2250 434.2500 434.2750 434.3000 434.3250 434.3500 434.3750 434.4000 434.4250 434.4500 434.4750 434.5000 434.5250 434.5500 434.5750 434.6000 434.6250 434.6500 434.6750 434.7000 434.7250 434.7500 434.7750

CTCSS FREQUENCY LIST

Channel No. 13 Frequency (Hz) 67.0 71.9 74.4 77.0 79.7 82.5 85.4 88.5 91.5 94.8 97.4 100.0 103.5 Channel No. 26 Frequency (Hz) 107.2 110.9 114.8 118.8 123.0 127.3 131.8 136.5 141.3 146.2 151.4 156.7 162.2 Channel No. --Frequency (Hz) 167.9 173.8 179.9 186.2 192.8 203.5 210.7 218.1 225.7 233.6 241.8 250.3 OFF

SECTION 2

MAIN UNIT

INSIDE VIEWS

TOP VIEW

BOTTOM VIEW

Audio amplifier (IC305: NJM2070) R+3 Regulator (Q304: 2SA1586)
T+3 Regulator (Q308: 2SB798)
EEPROM (IC300: BR24C02) +3 Regulator (IC303: R1121N301B)
CPU (IC301: PD78F9418AGK)

RF UNIT

TOP VIEW BOTTOM VIEW
FM IF IC (IC1: TA31136FN) PLL IC (IC2: TB31202FN)
1st IF amplifier (Q3: 2SC4215) 1st mixer (Q2: 2SC4226) 1st IF filter (Fl2: FL-298) RF amplifier (Q1: 2SC5194)
2nd IF filter (Fl3: CFWM450E) Reference oscillator (X2: CR-633A 21.25 MHz) VCO circuit

SECTION 3

DISASSEMBLY INSTRUCTIONS

REMOVING THE RF UNIT

1 Unscrew 2 screws H. 2 Unsolder 2 points I, and remove the RF unit.

REMOVING THE REAR PANEL

1 Unscrew 1 screw A , and 5 screws B. 2 Remove the rear panel in the direction of the arrow.

RF unit

Rear panel Main unit

REMOVING THE MAIN UNIT

1 Remove 1 knob C, unscrew 1 nut D, and then remove 1 ring E. 2 Unscrew 1 screw F. 3 Unsolder 2 points G, and remove the MAIN unitin the direction of the arrow.

Main unit

SECTION 4

CIRCUIT DESCRIPTION

4-1-4 2ND MIXER AND DEMODULATOR CIRCUITS (RF UNIT)
The 2nd mixer circuit converts the 1st IF signal to a 2nd IF signal. A double conversion superheterodyne system (which converts receive signals twice) improves the image rejection ratio and obtains stable receiver gain. The 1st IF signal from the IF amplifier (Q3) is applied to the 2nd mixer section in the FM IF IC (IC1, pin 16), and is mixed with the 2nd LO signal to be converted into a 450 kHz 2nd IF signal. The FM IF IC contains a 2nd mixer, quadrature detector, noise amplifier and a limiter amplifier, etc. The PLL reference oscillator (X2) is used for the 2nd LO signal via the PLL IC (IC2, pins 11, 9), and is applied to pin 1 of the FM IF IC (IC1). The mixed 2nd IF signal is output from pin 3 and passed through the ceramic bandpass filter (FI3) to remove unwanted heterodyne frequencies. It is then amplified at the limiter amplifier section (IC1, pin 5) and applied to the quadrature detector section (IC1, pins 10, 11) to demodulate the 2nd IF signal into AF signals.

4-1 RECEIVER CIRCUITS

4-1-1 ANTENNA SWITCHING CIRCUIT (RF UNIT)
Received signals from the antenna connector are passed through the low-pass filter (L1L3, C1C5). The filtered signals are applied to the 4 type antenna switching circuit (D1 -D4, L5, L6, C9, C10). The antenna switching circuit functions as a low-pass filter while receiving. However, its impedance becomes very high while D101 and D102 are turned ON (while transmitting). Thus transmit signals are blocked from entering the receiver circuits. The passed signals are then applied to the RF amplifier circuit.
4-1-2 RF CIRCUIT (RF UNIT)
The RF circuit amplifies signals within the range of frequency coverage and filters out-of-band signals. The signals from the antenna switching circuit are amplified at the RF amplifier (Q1) and passed through the bandpass filter (FI1) to suppress out-of-band signals. The filtered signals are applied to the 1st mixer circuit (Q2).
4-1-5 AF CIRCUIT (RF AND MAIN UNITS) 4-1-3 1ST MIXER AND 1ST IF CIRCUITS (RF UNIT)
The 1st mixer circuit converts the received signals to a fixed frequency of the 1st IF signal with a PLL output frequency. By changing the PLL frequency, only desired signals will be passed through a crystal filter at the next stage of the 1st mixer. The signals from the bandpass filter are mixed at the 1st mixer circuit (Q2) with a 1st LO signal coming from the VCO circuit to produce a 21.7 MHz 1st IF signal. The 1st IF signal is applied to a crystal filter (FI2) to suppress out-of-band signals. The filtered 1st IF signal is applied to the IF amplifier (Q3), then applied to the 2nd mixer circuit (IC1, pin 16). AF signals from the FM IF IC (RF unit; IC1, pin 9) are applied to the MAIN unit via J300 pin 14. The AF signal applied to the [VOL] control (MAIN unit; R406) to control the audio level via the volume mute switch (Q316). The level controlled AF signals are applied to the AF power amplifier (IC305, pin 2) to drive an internal speaker (SP300) via the [SP] jack (J301).
2nd IF filter 450 kHz CR27 R26 C45 Active filter FM detector 9 R34 C47 X1 R33 R+C46 CC43 RNoise detector Limiter amp. Mixer RSSI FI3 (21.25 MHz) 1 9

PLL IC IC2 11

X2 21.25 MHz

AF signal "AF"

IC1 TA31136FN
1st IF (21.7 MHz) from Q1 "SQLIN" signal to the CPU pin 46
4-1-6 SQUELCH CIRCUIT (RF AND MAIN UNITS)

(1) NOISE SQUELCH The noise squelch circuit cuts out AF signals when no RF signals are received. By detecting noise components in the AF signals, the squelch circuit switches the AF mute switch. A portion of the AF signals from the FM IF IC (RF unit; IC2, pin 9) are applied to the active filter section (RF unit; IC2, pin 8). The active filter section amplifies and filters noise components. The filtered signals are applied to the noise detector section and output from pin 14 as the SQLIN signal. The SQLIN signal from IC2 (pin 14) passes through J300, pin 12, and is then applied to the CPU (MAIN unit; IC301, pin 46). The CPU analyzes the noise condition and outputs the RMUT and AFON signals to toggle the volume mute (MAIN unit; Q316) and AF mute (MAIN unit; Q311) switches. (2) TONE SQUELCH The tone squelch circuit detects AF signals and opens the squelch only when receiving a signal containing a matching subaudible tone (CTCSS). When tone squelch is in use, and a signal with a mismatched or no subaudible tone is received, the tone squelch circuit mutes the AF signals even when noise squelch is open. A portion of the AF signals from the FM IF IC (RF unit; IC1, pin 9) passes through the AF control (MAIN unit; IC304) to control the volume mute and AF mute switches.
4-2-3 DRIVE/POWER AMPLIFIER CIRCUITS (RF UNIT)
The amplifier circuit amplifies the VCO oscillating signal to the output power level. The amplified transmit signal is passed through the antenna switching circuit (D1) and low-pass filter, and is then applied to the antenna. The modulated transmit signal is amplified at the pre-drive and drive amplifiers (Q5, Q6) after being amplified at the buffer amplifier (Q8). The amplified signal is power amplified at the power amplifier (Q4) to obtain 10 mW of RF power. The power amplified signal is then applied to the antenna via the low-pass filter circuits.
4-3 PLL CIRCUITS (RF UNIT)
A PLL circuit provides stable oscillation of the transmit frequency and receive 1st LO frequency. The PLL output compares the phase of the divided VCO frequency to the reference frequency. The PLL output frequency is controlled by the divided ratio (N-data) of a programmable divider. The PLL circuit consists of the VCO circuit (Q8, D8, D9). An oscillated signal from the VCO passes through the buffer amplifier (Q7) is applied to the PLL IC (IC2, pin16) and is prescaled in the PLL IC based on the divided ratio (N-data). The reference signal is generated at the reference oscillator (X2) and is also applied to the PLL IC. The PLL IC detects the out-of-step phase using the reference frequency and outputs it from pin 14. The output signal is passed through the loop filter (R44, C67) and is then applied to the VCO circuit as the lock voltage. If the oscillated signal drifts, its phase changes from that of the reference frequency, causing a lock voltage change to compensate for the drift in the oscillated frequency.

4-2 TRANSMITTER CIRCUITS

4-2-1 MICROPHONE AMPLIFIER CIRCUIT (MAIN UNIT)
AF signals from the internal/external microphone are applied to the microphone amplifier circuit and low-pass filter (IC304) via the microphone switch (Q313). The filiterd audio signals are applied to the modulation circuit on the RF unit via J300, pin 15 as the MOD signal.
2-2 MODULATION CIRCUIT (RF UNIT)
The filtered audio signals from J300, pin 15 (On the MAIN unit) are applied to the modulation circuit (D8, D9) to modulate transmit signals at the VCO circuit (Q8). The modulated signal is applied to the drive amplifier circuit.
D6 D7 RX VCO Buffer Q7 Loop filter Q8, D8, D9 IC2 TB31202FN 14 to the FM IF IC (IC1, pin1) X2 21.25 MHz Phase detector Programmable counter Prescaler 7 8
to 1st mixer circuit to transmitter circuit

Programmable divider

Shift register

CK DATA STB

4-4 POWER SUPPLY CIRCUITS

VOLTAGE LINE

LINE VCC DESCRIPTION The voltage from the connected battery or power supply from DC IN (J302). Common 3 V converted from the VCC line at the 3V regulator circuit (IC303). The circuit outputs the voltage regardless of the power ON/OFF condition. Common 3 V converted from the VCC line at the +3V regulator circuit (Q303, D301). Receive 3 V cotrolled by the R+3 regulator circuit (Q304) using the RXV signal from the CPU (IC301). Transmit 3 V converted from the VCC line at the T+3 regulator circuit (Q305, Q308, D303, D304) using the TXV signal coming from the CPU (IC301).

Pin number 41

Port name UNLK
Description Input port for the PLL unlock signal from the PLL IC (RF unit; IC2). Low : During unlock. Input port for the PTT switch from the external mic jack (MAIN unit; J303). Low : External PTT switch is ON.

+3V R+3

Input port for the control signal from the MICIN external remote microphone. TEMP Input port for the transceivers internal temperature. SQLIN Input port for the squelch level signal. VIN Input port for connected battery pack voltage.
MODE Input port for the [MODE] switch. POWSW BEEP Input port for the [POWER] switch. Low : While the [POWER] switch is pushed. Outputs beep audio signal.

4-5 PORT ALLOCATIONS

4-5-1 D/A CONVERTER (RF unit; IC3)

Pin number 3 Port name MODC PWRC FC Description Outputs deviation control signal. Outputs TX power control signal. Outputs PLL reference frequency control signal.
DOWN Input port for the [DOWN] switch. UP PTTSW Input port for the [UP] switch. Input port for the internal [PTT] switch. Low : While the [PTT] switch is pushed.
Outputs the control signal of LCD back LAMPO light. Outputs the control signal of the AF AFON amplifier regulator circuit (MAIN unit; Q306, Q307, Q311). RXV Outputs the control signal of the R+3 regulator circuit (MAIN unit; Q304).
4-5-2 CPU (MAIN unit; IC1)
Pin number Port name TEST Description Input port for the test mode switch.
Outputs the clock signal to the EEPEEPCK ROM (MAIN unit; IC300). Outputs data signals to the EEPROM EEPDA (MAIN unit; IC300). Input port for the control signal of the DETOUT tone detection SHIFT PLSTB CK DATA Outputs the shift control signal to the PLL IC (RF unit; IC2). Outputs strobe signals for the PLL IC (RF unit; IC2). Outputs the clock signal to the PLL IC (RF unit; IC2). Outputs data signals to the PLL IC (RF unit; IC2). 64 62
Outputs the [MIC] mute signal for RING function. MMUTE High : While RING signals are output, etc. Outputs internal microphone control signal. MICSW High : While the internal PTT switch is pushed. Outputs the control signal of the +3V POWER regulator circuit (MAIN unit; Q303, D301). Outputs the control signal of the volRMUTE ume mute switch (MAIN unit; Q316). High : While squelched. TXV Outputs the control signal of the T+3 regulator circuit (Q305, Q308, D303, D304).
Outputs the control signal of the charge CHGC circuit (Q312, Q314, D305, D308).

SECTION 5

5-1 PREPARATION
When adjusting IC-4088E, HM-75A OPTIONAL SPEAKER-MICROPHONE is required. All adjustment items must be preformed at ADJUSTMENT MODE as show below.

REQUIRED TEST EQUIPMENT

EQUIPMENT

DC power supply

GRADE AND RANGE
Output voltage Current capacity Measuring range Frequency range Impedance SWR : 4.5 V DC : 1 A or more : : : : 1 mW1 W 300600 MHz 50 Less than 1.2 : 1

FM deviation meter

Frequency range Measuring range : 30600 MHz : 0 to 10 kH
RF power meter (terminated type)
Standard signal generator (SSG)
Frequency range Output level

Frequency counter

Frequency range : 0.1600 MHz Frequency accuracy : 1 ppm or better Sensitivity : 100 mV or better
: 0.1600 MHz : 0.1 V32 mV (127 to 17 dBm)
ENTERING THE ADJUSTMENT MODE
Turn the transceivers power OFF. While connecting the TEST on the MAIN board to GND, then turn power ON.

PTT switch

OFF ON LOCK A B
OPERATION ON THE ADJUSTMENT MODE
Change the adjustment item Change the adjustment value Verify the adjustment value Change the adjustment channel Change the adjustment group : : : : : HM-75As [B] key HM-75As [UP]/[DN] keys HM-75As [A] key IC-4088Es [UP]/[DN] keys IC-4088Es [MODE]+ [UP]/[DN] keys
Lock switch: Locks all switches except [PTT]

Earphone jack

ADJUSTMENT ITEMS
When entering adjustment mode, displayed adjustment items indicator on LCD as follow. Reference frequecy adjustment Output power adjustment FM deviation adjustment CTCSS adjustment Squelch adjustment : Displayed : Displayed : Displayed : Displayed : Displayed

CONNECTION

to MIC JACK to SP JACK
CAUTION: DO NOT transmit while the SSG is connected to the antenna.
Frequency counter to RF unit J1
Audio generator AC millivoltmeter HM-75A
Standard signal generator RF power meter 50 / 1500 mW FM deviation meter DC power supply 4.5 V /1.0 A

to DC IN

5-2 ADJUSTMENT MODE ADJUSTMENTS
The following adjustment must be performed at ADJUSTMENT MODE.
ADJUSTMENT REFERENCE FREQUENCY [Fr]
ADJUSTMENT CONDITION 1 Operating channel Transmitting : Ch 35

MEASUREMENT

HM-75As KEY [UP]/[DN]
Loosely couple a fre- 433.925000 MHz quency counter to the antenna.

OUTPUT POWER [PL]

1 Operating channel Transmitting

: Ch 35

Connect an RF power meter to the RF test port J1.

[UP]/[DN]

FM DEVIATION [dL]
: Ch Operating channel Connect an FM devia Connect an audio generator to the [MIC] tion meter to the RF jack and set as :1 kHz/100 mV rms test port J1. Set an FM deviation meter as: HPF : OFF LPF : 20 kHz or 15 kHz De-emphasis : OFF Detector : (PP)/2 Set group No. : OFF ( ) Transmitting 2 Operating channel Set group No. Transmitting : Ch 35 : 01

4.1 kHz

CTCSS [to]

0.70 kHz

SQUELCH [Sq]
: Ch Operating channel speaker Connect an SSG to J1 on the RF unit and set as: Level : 0.13 V* (125 dBm) Modulation : OFF Receiving 2 Set an SSG as: Level Receiving : OFF Audio signal disappears.

Verify

RF test port

RF GND

ENTERING THE ADJUSTMENT MODE q Turn the transceiver power OFF. w While connecting the "TEST" to GND, then turn power ON.

SECTION 6

[MAIN UNIT]

REF NO.

IC300 IC301 IC302 IC303 IC304 IC305

PARTS LIST

DESCRIPTION REF NO.
R363 R364 R365 R366 R368 R369 R373 R374 R375 R376 R377 R378 R381 R382 R383 R384 R385 R386 R387 R388 R389 R390 R391 R392 R393 R394 R395 R396 R397 R399 R400 R401 R402 R403 R404 R405 R406 R409 R410 R412 R413 R414 R415 R416 R417 R418 R419 R420 R421 R422 R423 R424 R425 R426

ORDER NO.

S.IC S.IC S.IC S.REG S.IC S.IC
S.RESISTOR S.RESISTOR S.THERMISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR VARIABLE S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.THRMISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR

DESCRIPTION

ERJ2GEJ 563 X (56 k) ERJ2GEJ 103 X (10 k) NTCG16 3NH 221KT ERJ2GEJ 102 X (1 k) ERJ2GEJ 153 X (15 k) ERJ2GEJ 122X (1.2 k) ERJ2GEJ 823 X (82 k) ERJ2GEJ 272 X (2.7 k) ERJ2GEJ 155 X (1.5 M) ERJ2GEJ 122X (1.2 k) ERJ2GEJ 153 X (15 k) ERJ2GEJ 334 X (330 k) ERJ2GEJ 103 X (10 k) ERJ2GEJ 123 X (12 k) ERJ2GEJ 121 X (120 ) ERJ2GEJ 104 X (100 k) ERJ3GEYJ 1R0 V (1 ) ERJ2GEJ 101 X (100 ) ERJ2GEJ 472 X (4.7 k) ERJ2GEJ 105 X (1 M) ERJ2GEJ 105 X (1 M) ERJ2GEJ 104 X (100 k) ERJ2GEJ 103 X (10 k) ERJ2GEJ 472 X (4.7 k) ERJ2GEJ 820 X (82 ) ERJ2GEJ 562 X (5.6 k) ERJ2GEJ 104 X (100 k) ERJ2GEJ 105 X (1 M) MCR10EZHJ 8.2 (8R2) ERJ2GEJ 100 X (10 ) ERJ2GEJ 472 X (4.7 k) ERJ2GEJ 104 X (100 k) ERJ2GEJ 332 X (3.3 k) ERJ2GEJ 101 X (100 ) ERJ2GEJ 333 X (33 k) ERJ2GEJ 101 X (100 ) RV-244 (RK0971110) 10KA ERJ2GEJ 104 X (100 k) ERJ2GEJ 104 X (100 k) ERJ2GEJ 103 X (10 k) ERJ2GEJ 103 X (10 k) ERJ2GEJ 103 X (10 k) NTCG16 4LH 473KT ERJ2GEJ 104 X (100 k) ERJ2GEJ 473 X (47 k) ERJ2GEJ 472 X (4.7 k) ERJ2GEJ 104 X (100 k) ERJ2GEJ 225 X (2.2 M) ERJ2GEJ 223 X (22 k) ERJ2GEJ 472 X (4.7 k) ERJ2GEJ 105 X (1 M) ERJ2GEJ 473 X (47 k) ERJ2GEJ 103 X (10 k) ERJ2GEJ 222 X (2.2 k)
BR24C02FV-WE2 PD78F9418AGK-9EU R3112N281A-TR R1121N301B-TR AK2342B NJM2070M-T1
Q302 Q303 Q304 Q305 Q306 Q307 Q308 Q309 Q310 Q311 Q312 Q313 Q314 Q315 Q316 Q317 Q318

1590000850

S.TRANSISTOR S.TRANSISTOR S.TRANSISTOR S.TRANSISTOR S.TRANSISTOR S.TRANSISTOR S.TRANSISTOR S.TRANSISTOR S.TRANSISTOR S.TRANSISTOR S.TRANSISTOR S.FET S.TRANSISTOR S.FET S.FET S.TRANSISTOR S.TRANSISTOR

ECJ0EB1E471K C1608 CH 1H 100D-T ECJ0EC1H010B ECJ0EB1A473K ECJ0EB1E471K ECJ0EB1E471K ECJ0EC1H220J ECJ0EC1H100C ECJ0EB1E102K ECJ0EB1A473K ECJ0EB1E471K C1608 CH 1H 090D-T C1608 CH 1H 080D-T ECJ0EB1E102K ECJ0EB1E102K C1608 CH 1H 330J-T C1608 CH 1H 330J-T C1608 CH 1H 080D-T ECJ0EB1E471K ECJ0EB1E471K C1608 CH 1H 050C-T ECJ0EB1E471K C1608 CH 1H 030B-T ECJ0EB1E471K ECEV1EA4R7SR ECJ0EB1E102K ECJ0EC1H080C ECJ0EB1E471K ECJ0EB1E471K ECJ0EB1A104K ECJ0EB1E471K ECJ0EC1H220J ECJ0EC1H680J ECJ0EB1A473K ECEV1CA100SR ECJ0EC1H1R5B ECJ0EC1H0R5B ECJ0EC1H020B ECJ0EC1H020B ECJ0EB1E471K ECJ0EC1H040B ECJ0EC1H120J ECJ0EC1H120J ECJ0EB1E471K ECEV1EA4R7SR C1608 JF 1C 224Z-T ECJ0EC1H050B ECJ0EB1A473K ECJ0EB1E471K ECJ0EB1E102K C1608 JB 1H 223K-T ECJ0EB1C103K ECST1CY105R ECJ0EC1H120J ECJ0EC1H220J ECJ0EC1H330J ECJ0EB1E102K ECJ0EB1C103K ECJ0EB1E471K ECEV0JA220SR ECJ0EB1A104K C1608 JF 1C 224Z-T C1608 JF 1C 224Z-T ECJ0EB1A473K ECJ0EB1A104K C2012 JF 1C 105Z-T ECJ0EC1H470J ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1A104K ECJ0EB1A104K ECJ0EB1E471K ECJ0EB1E471K
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R14 R17 R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R39 R40 R41 R43 R44 R45 R46 R48 R49 R50 R51 R64 R65 R66 R67 R68 R69 R70 R77 R78 R79 R80 R82 R83 R84 R85 R86 R87

7030005060

S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.THRMISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.THERMISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.RESISTOR S.THERMISTOR S.RESISTOR S.RESISTOR
ERJ2GEJ 333 X (33 k) ERJ2GEJ 330 X (33 ) ERJ2GEJ 470 X (47 ) ERJ2GEJ 104 X (100 k) ERJ2GEJ 472 X (4.7 k) ERJ2GEJ 122X (1.2 k) ERJ2GEJ 471 X (470 ) ERJ2GEJ 152 X (1.5 k) ERJ2GEJ 823 X (82 k) ERJ2GEJ 821 X (820 ) ERJ2GEJ 221 X (220 ) ERJ3GEYJ 102 V (1 k) ERJ2GEJ 102 X (1 k) ERJ2GEJ 682 X (6.8 k) ERJ2GEJ 221 X (220 ) ERJ2GEJ 680 X (68 ) ERJ2GEJ 223 X (22 k) ERJ2GEJ 681 X (680 ) ERJ2GEJ 102 X (1 k) ERJ2GEJ 181 X (180 ) ERJ2GEJ 181 X (180 ) ERJ2GEJ 270 X (27 ) ERJ2GEJ 104 X (100 k) ERJ2GEJ 561 X (560 ) ERJ2GEJ 182 X (1.8 k) ERJ2GEJ 153 X (15 k) ERJ2GEJ 153 X (15 k) NTCG16 4BH 103KT ERJ2GEJ 564 X (560 k) ERJ2GEJ 122X (1.2 k) ERJ2GEJ 152 X (1.5 k) ERJ2GEJ 221 X (220 ) ERJ2GEJ 473 X (47 k) ERJ2GEJ 681 X (680 ) ERJ2GEJ 333 X (33 k) ERJ2GEJ 333 X (33 k) ERJ2GEJ 181 X (180 ) ERJ2GEJ 333 X (33 k) ERJ2GEJ 822 X (8.2 k) ERJ2GEJ 472 X (4.7 k) ERJ2GEJ 103 X (10 k) ERJ2GEJ 473 X (47 k) ERJ2GEJ 180 X (18 ) ERJ2GEJ 563 X (56 k) ERJ2GEJ 332 X (3.3 k) ERJ2GEJ 100 X (10 ) ERJ2GEJ 104 X (100 k) ERJ2GEJ 103 X (10 k) ERJ2GEJ 104 X (100 k) ERJ2GEJ 332 X (3.3 k) ERJ2GEJ 103 X (10 k) ERJ2GEJ 105 X (1 M) NTCG16 3NH 681KT ERJ2GEJ 103 X (10 k) ERJ2GEJ 473 X (47 k) ERJ2GEJ 104 X (100 k) ERJ2GEJ 102 X (1 k) ERJ2GEJ 220 X (22 ) ERJ3GEYJ 470 V (47 ) ERJ2GEJ 470 X (47 ) NTCG16 3NH 221KT ERJ2GEJ 103 X (10 k) ERJ2GEJ 333 X (33 k)

C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14

4030017730 4030007010

S.CERAMIC S.CERAMIC S.CERAMIC S.CERAMIC S.CERAMIC S.CERAMIC S.CERAMIC S.CERAMIC S.CERAMIC S.CERAMIC S.CERAMIC S.CERAMIC S.CERAMIC S.CERAMIC
C1608 CH 1H 080D-T C1608 CH 1H 060D-T C1608 CH 1H 1R5B-T C1608 CH 1H 100D-T C1608 CH 1H R75B-T C1608 CH 1H 080D-T C1608 CH 1H 070D-T C1608 CH 1H 220J-T C1608 CH 1H 060D-T C1608 CH 1H 070D-T C1608 JB 1H 103K-T ECJ0EB1E471K ECJ0EB1E471K C1608 CH 1H 100D-T
6510016890 CONNECTOR 6510023490 S.CONNECTOR
IMSA-9210B-1-02R-T AXK5S20340P

W4 W5 W6 W8 W9

7030010040 S.JUMPER S.JUMPER S.JUMPER S.JUMPER S.JUMPER
ERJ2GE-JPW ERJ2GE-JPW ERJ2GE-JPW ERJ2GE-JPW ERJ2GE-JPW

EP2 EP3

6910013310 S.BEAD 0910055942 PCB

MMZ1608D121B B-5919B

SECTION 7

7-1 CABINET PARTS

[CHASSIS PARTS]
REF. NO. ORDER NO. SP1 EP1 MP1 MP2 MP3 MP4 MP5 MP6 MP7 MP8 MP9 MP10 MP11 MP12 MP13 MP14 MP15 MP16 MP17 MP19 MP20 MP22 MP25 MP32 MP33 MP35 MP36
MECHANICAL PARTS AND DISASSEMBLY

7-2 ACCESSORIES

DESCRIPTION QTY. REF. NO. ORDER NO. MP1 DESCRIPTION QTY. 1
2510001120 Speaker SDRS-3650P-Antenna 2628 ANT Front panel 2628 Rear cover 2628 Rear panel 2628 Window plate 2628 Window sheet 2628 SP JACK CAP Knob N-4-key 2628 PTT rubber 2628 A-terminal 2628 B-terminal 2628 Detect button 2628 PTT sheet 2628 Lock cover O-ring (AU) O-ring (AV) 2045 BATT seal 2045 C-terminal Screw PH B0 2x15 ZK (BT) 2605 DC cap Nut (E) Screw PH B0 2x6 ZK (BT) Screw PH B0 2x20 ZK (BT) 2628 Mic rubber Sponge (HC)

Belt clip-1

REF. NO. ORDER NO. R406 J301 J302 J303 DS300 MC300 S304 EP303 MP301 MP302 MP303 MPRV-HSJ1493-01-04-730A-02BKA 6450000130 HSJ1102-01-LCD L2-0494TAY 7700002160 KUC3523-SW-LCD contact SRCN-2045-SP-N-W 2628 Reflector 2628 LCD holder Screw PH 2x6 ZK 2628 CHASSIS DESCRIPTION QTY. 2 1
REF. NO. ORDER NO. MP1 DESCRIPTION QTY. 2405 VCO case

Screw abbreviations

B0, BT: Self-tapping PH: Pan head ZK: Black

R373 C317 C344 C389

R357 C335

R363 C339

R330 C330 R345 C327
R362 C336 R348 R346 C304 C332 C314 W300 C331 R359 R344

C340 R423

C329 C320 R308 R307 C390 R332 R375

D309 D310

R420 R389 D317

R418 R417 R328

R425 C357 R387

C319 C323

R399 C376 R301 C375

B5918D

C369 C372

R400 C380

C379 R402

BOTTOM VIEW

C349 R391 C371

C374 C338

C368 R349 R421

R422 C352

R410 W304
DS301 R343 D304 C350 R413 R414 R412 C383 EP301 EP302
R340 R335 C316 R338 R333 C326 R327 C313

C301 C300

R304 C303
X300 R415 R424 R364 R416 C385 C386 C311

9-2 RF UNIT

R1 R3 C15

FI2 X1

C85 R33 R65 C46 C88 C16 C47 C44 C43 R32
L24 R29 C42 R26 R27 R31 R30 R28

B5919B

R87 C98 D10

R49 R86 C92 R66 R78

C75 Q13
C77 R51 R50 R79 C91 R45 C102 R80 C71 C69 D11 D12

C104 C54 R70 R69 L20 R36

R67 R35 R68

Q7 Q12

C101 W4 C50 L19 L18 R40 C58

D8 R41

C64 R43 R44 W6 W5 C41 R25 R24 C61 R23 C72 L17 R22 D6 D7 C63 EP2 C40

L16 R21

C35 R20 C17 C62 R46 C73 R5 L15

R18 C103 C38 R19

L13 D5 C13 R4 R84 R82

C31 R77 L8

J2 to the MAIN unit J300
C36 R6 C22 R34 C45 C18 C21 R14 C99 C48 W9

C30 C20 C24 R7

L9 IC1
C28 R10 C19 R9 L12 R11 R64 C86 C87

L11 C23 R8 L10 C25 W8

D1 C6 L2 C7 L3 C2 C3 C5 L1 C8 C4 C1 L4

SECTION 10

BLOCK DIAGRAM

ANTENNA T+3 R+3 R+3 R+3

X1 CDBC450CX24
FI3: CFWM450E CERAMIC BPF IF AMP IF AMP Q3: 2SC4215 2nd.Lo: 21.25MHz VCO3 VCO3 Q8: 2SC5108 D8, D9: 1SV284
FI2: FL-298 1st.MIX XTAL BPF Q2: 2SC4226 1st IF: 21.7MHz
FI1: NSVS972 BPF RF AMP Q1: 2SC5194 D6, D7: MA2S077 T+3 TX/RX SW D1, D2, D3: MA2S077 D4: MA2S728 HPF LPF TX/RX: 433.075 - 434.775MHz

VCO3 1st.Lo: 411.375 - 413.075MHz LO SW
IC1: TA31136FN UNKOCK DATA, CK, STB IC2: TB31202FN PLL IC LOOP FIL
BUFF TX: 433.075 - 434.775MHz RX: 411.375 - 413.075MHz Q7: 2SC5108
DRIVE AMP Q5: 2SC3356 Q6: 2SC4228 D6, D7: MA2S077 D5: MA2S728

PWR AMP Q4: 2SK3078A PC

FIN FMDET S OUT X2: CR-633A D12: HVC376B REF OSC. NOISE DET MUTE T+3 R+3 D/A IC3(2): BH2220FVM
Q9: 2SC4117 SHIFT Q13: 2SC4213 R+3 VCO3

Q313: 2SK1829 MIC MUTE

KUC3523 MC300
FC IC3(3): BH2220FVM MOD VOL Q12: 2SJ144 VCO REG Q10: 2SA1586 Q11: 2SC4116 D10/D11: MA2S111

Q317: DTC144EU

D/A IC3(1): BH2220FVM
PTT SW J303 PSC VCC PTT SENSE Q310: DTA113ZU Q309: DTC114TU
AFV MOD CTCSS TONE-FIL MIC-AMP De-emphasis Pre-emphasis SCREMBLER IDC-AMP LPF MICIN Q316: 2SJ144 R406 AFOUT AF MUTE RV-244 IC305: NJM2070 MMUT RMUT PTTC Q311: 2SC4213 SP300 AF AMP VOL MUTE J301

IC304: AK2342B EEPROM

C3V SHIFT SQL IC300: BR24C02 SENS

SDRD-3650P

DC 6V in J302 CHG V-SENS BEEP Q318: DTC144YU D317: MA2S111 D306: RB551V
AFV +3V LPF Q307: 2SA1362 Q306: 2SC4116 AF REG
T+3 D302, D303, D304: MA2S111 Q305: 2SC4116 Q308: 2SB798 T+3 CURRENT AMP
DS301: CL-200YG LED DRV Q302: DTA114EU

X300: CR-465

IC302: R3112N281A R+3 CURRENT AMP
IC301 : PD78F9418AGK-9EU PSC C3V
6V/ BATT SW D307: MA2S728

CHARG BATT

D308: MA133 D305: SB07-03C Q314: 2SB1132 Q312: DTC144EU

Q304: 2SA1586

CHGC BATT-SELECT
PTT S300 UP S301 DOWN S302 HVIN MODE S303 POWER LCD DS300: L2-0494TAY MATRIX TEMP SENS TXC AFON
Q303: UMZ2N D301: MA2S111

+3V CURRENT AMP

+3 REG

POW SW Q315: HAT1023R

IC303: R1121N301B COMMON RESET TEMP

VCC SENS BPON VIN

10 - 1

D309,D310,D313: MA2S111

BATTERY

SECTION 11

11-1 MAIN UNIT

+3V RR403 100

Rk PTT CPU3V DS301 CL-200YG-C-TS +3V X300 CR-465 C303 EP300 0.01 C389 0.1

 

Tags

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