Question about ICOM Informatique IC-F121 VHF 136-174MHz mobile 128Ch 50W Microphone

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I bought a new logic unit (front face) of Icom F121 and it needs to be restored. How do you restore a logic unit for the Icom F121?

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1- You have to to "Reserve" mode.2- Change Set Mode Access: Inhibit to Enable3- Common>>Secutity Change Set Mode Access : Inhibit to Enable4- Enter RX TX frequency and write to the radio.
or you can download version Rev 1.7 from here:
http://www.two-way-radio-tools.com/icom-softwares.html
http://www.two-way-radio-tools.com/icom-radio.html

Posted on Jan 30, 2012

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Posted on Jan 02, 2017

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When using the OPC617 external cable, what solder pads need jumpered for PTT and mic audio?


To use OPC-617 option cable:1- open your CS-F100 Rev 1.7, read your radio.2- click on Common >> Expert >>EPTT/FTSW change to EPTT, 3- On the main board , look into the left side of the board you see pad D, solder ittogether, if you use pad F, you shou.ld put a 47K ohm resistor.You can follow this link for your pin out connection.http://www.two-way-radio-tools.com/icom-mc1700-mdc.html
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Jun 04, 2010 | ICOM Informatique IC-F121 VHF 136-174MHz...

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How do I reset the F221 to factory settings. I cloned the unit with V1.6 of the programming software with updates that included turning on the user start password and now the box will not communicate with...


F121 VHF, F221 UHF they both use the latest Version 1.7.
For F121 Factory default as follows:Open your CS-F100 software, enter RX TX frequency below, and write to the radio.Ch1: 136.100 MHzCh2: 155.100 MHzCh3: 173.900 MHz
For F221 Enter RX TX frequency belowCh1: 440.000MHzCh2: 460.000MHzCh3: 489.000MHz, then write to your radio
Or you check from this site:http://www.two-way-radio-tools.com/icom.html
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Feb 04, 2010 | ICOM Informatique IC-F121 VHF 136-174MHz...

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My GE double oven JKP26GP broiler burned out (burned a hole right thru). The keypad immediately went blank and the keypad controlled top unit isn't working now (top unit only - bottom is fine). Will...


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Ipod nano 3rd no display after new battery put in. It beeps twice when plugged into the wall charger. The computer can see it just fine.


It may need a new logic board as well but first, try a restore. Connect your iPod with the cable that came with it to the USB port on your computer. In iTunes, click and (Restore). This will rebuild all the software on the iPod and restore your songs. If that doesn't work, I guess it's the logic board. Unfortunately, replacing that is going to cost almost as much as a new iPod.

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My audio output seems to be not working.. I wonder why, and if there's a way to fix this.. can you help me here?


If you have tested other head phones and already restored the iPod using itunes with no resolve; you will need to replace the jack. It's very cost effective and not hard to do either. I have posted a step by step on restoring as well as dismantling the unit to repair it yourself. You can purchase the necessary parts from several different places. However I found the cheapest site to be

www.ififxit.com


How to restore iPod (ARTICLE NUMBER HT1339)
Open iTunes, and then connect your iPod to your computer using the USB or FireWire cable that came with your iPod.

After a few moments, your iPod will appear in the Source panel in iTunes.
Select your iPod in the Source panel and you will see information about your iPod appear in the Summary tab of the main iTunes windows.

Click the Restore button. You will be prompted with one or more restore options that may prompt iTunes to automatically download the latest iPod Software.

The 4 possible restore options are: Restore Option

1: Restore - Restores with same iPod Software version already on iPod. Restore Option

2: Use Same Version - Restores with same iPod Software version already on iPod even though a newer version is available. Restore Option

3: Use Newest Version - Restores with the latest iPod Software available. Restore Option

4: Restore and Update - Restores with the latest iPod Software available.

If you are using a Mac, a message will appear prompting you to enter an administrator’s name and password.

A progress bar will appear on the computer screen indicating that the first stage of the restore process has started.

When this stage is completed, iTunes will present one of two messages on screen with instructions specific to the iPod model you are restoring.
Restore Instruction 1: Disconnect iPod and connect it to iPod Power Adapter (typically applies to older iPod models).


Restore Instruction 2: Leave iPod connected to computer to complete restore (typically applies newer iPod models).

During the stage 2 of the restore process, the iPod will show an Apple logo as well as a progress bar at the bottom of the display. It is critical that the iPod remains connected to the computer or iPod Power adapter during this stage.

Note: The progress bar may be difficult to see since the backlight on the iPod display may be off.

After stage 2 of the restore process is complete and the iPod is connected to the computer, the iTunes Setup Assistant window will appear asking you to name your iPod and choose your syncing preferences similar to when you connected your iPod for the first time.






And if you need to replace anything here is a full description on removing the appropriate parts. The tools needed can also be purchased on that website for under 4 dollars. I do hope you find this helpful and easy to follow.

Top Case Removal Begin by using a flat tool to separate the white plastic front case from the silver backcase. You will need to stick your flat tool into the crevice, work it down into the crevice,and then pry up so that the casing separates. Apply enough pressure so that your flat tooldoes not slip and scratch your iPod!Continue separating the casing by gently prying up all the way around the unit. It shouldbe much easier to pry the casing apart after you get the initial corner started.

With the casing separated, grasp the top half (the part with the front bezel) and flip it over. Note that there is an orange cable in the top left corner that connects the iPodlogic board to the headphone ports. If you gently grasp the cable and pull, it will slide out of its connector on the headphone port module board.

Headphone Jack Board Removal Before proceeding, you must remove the top case.There are two t6 screws holding the headphone port in place. Remove both of these screws. You can now remove the headphone module.

Hard Drive Removal Before proceeding, you must remove the top case.Hold the hard drive up, and remove the black tape on the hard drive connector. This will reveal the hard drive cable’s connector to the logic board.To remove the hard drive, grasp the cable (thumb on top index finger onbottom) and gently pull the cable out (away from you and the connector)The hard drive will now be free of the iPod logic board.

Hard Drive Cable Removal Before proceeding, remove the hard drive.To remove the hard drive cable, hold the drive, and gently pull up on the cable.It should come out easily.

Headphone Connector Cable Removal Before proceeding, remove the hard drive.To remove the headphone connector cable, Grasp the cable, and gently pull up. It should come out easily.

Logic Board Removal Before proceeding, remove the hard drive and headphone connector cable First, disconnect the battery connector by grasping the cable and gently pulling up to disconnect the cable from the logic board connector. Remove the 6 black T6 Screws.
With the screws removed slightly move the logic board to the left to give more access to the clickwheel cable. Gently pull this cable to free it from the logic boardconnector.The logic board will now easily come free from the case. The LCD will still be attachedto the logic board.

LCD Removal Before proceeding, first remove:Hard DriveHeadphone Connector CableLogic BoardTo remove the LCD, grasp the green connector cable, and gently pull to free it from the logic board connector. It should come out easily.


Battery Removal Before proceeding, first remove:Hard DriveHeadphone Connector Cable Logic Board To remove the battery, use a flat tool to pry the battery up. It is held on with a lightadhesive, and should come up by using just a little force. Lift the battery out of the unit.

Each part that you can purchase comes with its own set of instructions as well. Just remember when reasembeling the unit that it takes very little pressure with the unit. Cheers:) Let me know how it goes as well. I always appreciate feed back.

May 12, 2009 | Apple iPod MA446LL/A MP3 Player

1 Answer

Cant add music, music erased


looks like at least you're going to need to do a restore. if you still can't sync music after the restore you may need a new logic board. there are websites that show you how to replace the logic board.

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