Icom IC-7000 Manual
Alternate fan mod
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Also See for IC-7000:
- Instruction manual (166 pages) ,
- Service manual (93 pages) ,
- Modification instruction (8 pages)
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Alternate fan mod for IC-7000
Contact author: M3SVO
!! IF YOU ARE UNSURE ABOUT PERFORMING THIS MOD DON'T!!
!!IF YOU DAMAGE YOUR RADIO YOU ONLY HAVE YOURSELF TO BLAME!!
I have performed this mod on MY OWN radio without any adverse affects and my LDG AT-
7000 atu still works as it should.
Before this mod after been turned on for an hour or so the temp meter on the radio would
show around 50% on the scale (7 or 8 bars), after the mod the temp meter shows around
25% on the scale (4 bars).
First remove the top cover and remove the fan from the radio,
take a 100ohm resistor and solder a length of wire to each end and cover with heat shrink
tubing. Cut the red wire to the fan and attach one of the resistor wires between the two
halves and cover with heat shrink tubing.
Next follow the ORANGE wire from the ATU molex socket on the back of the radio to where
it is soldered on to the DDS unit (top right hand corner at the back of the radio) and attach
the remaining resistor wire to this point, position the resistor and wires so that they look
neat and tidy and then refit the fan and the top cover, mod is now complete.
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Summary of Contents for Icom IC-7000
- Page 1 Alternate fan mod for IC-7000 Contact author: M3SVO !! IF YOU ARE UNSURE ABOUT PERFORMING THIS MOD DON'T!! !!IF YOU DAMAGE YOUR RADIO YOU ONLY HAVE YOURSELF TO BLAME!! I have performed this mod on MY OWN radio without any adverse affects and my LDG AT- 7000 atu still works as it should.
- Page 2 Enable TV reception for ICOM IC-7000 Contact author: Duke - NA1A 1. Remove CPU/DSP unit by unscrewing three silver screws holding it down (the silver box on the top of the radio with copper taped sides) and pull up. 2. Locate four shift registers and bank of diodes - shift registers are 4094's. There are two next to each other and then a couple more.
- Page 3 Alternate method to enable TV mode Contact author: Dave My IC-7000 has an additional set of solder pads next to TV diode D2154. The solder pads are in the shape of half circles connected by a thin printed trace. The thin pc trace can be easily cut with an exacto type knife.
- Page 4 Enable TV reception for ICOM IC-7000 Contact author: Duke - NA1A 1. Remove CPU/DSP unit by unscrewing three silver screws holding it down (the silver box on the top of the radio with copper taped sides) and pull up. 2. Locate four shift registers and bank of diodes - shift registers are 4094's. There are two next to each other and then a couple more.
- Page 5 Left side Front 95.0F Left side Rear 98.1F After cw keying for aprox 5 min continous duty the heat generated by the IC-7000 did rise enough to enable to the temp control circuit. Heres the good news! Once the temp control circuit kicks in, the fan goes into high-rpm mode!!! Then returns to 'normal' operation with the 2W / 100ohm resistor voltage.
- Page 6 LDG Z11 or Z100. Your Icom 7000 Running Hot? ... Heres the FAN mod! ( This has been untested with an inline tuner ) 1. Tuner Lead #3 is +12v DC, tap into Tuner Lead #3 with a wire ( theres enough room to simply slip a solid copper wire into the crimp for lead #3 ) 2.
- Page 7 How to fix the IC-7000 audio noise (hiss) Contact author: Iulian Rosu YO3DAC / VA3IUL This paper is about fixing the IC-7000 noisy audio that occurs only when the audio output is connected to high-fidelity earphones. This audio noise (which sound like a hiss or white noise), is even stronger if the earphones are connected to the external speaker connector on the back of the transceiver.
- Page 10 PDF version: http://www.qsl.net/va3iul/Files/IC7000_audio_noise.pdf Downloaded from mods.dk Good luck, 73’s Iulian Rosu, YO3DAC / VA3IUL http://www.qsl.net/va3iul/...
- Page 11 One thing I noticed with the HM-151 is that (compared to the HM-103 etc) it has a lot of bass response, and this also depresses the treble response a bit. Sadly, the IC-7000 do not have the DSP TX equalizer that I feel should have been implemented. The IC-7000 is an excellent radio on transmit, but with the HM-151 it's a bit to "bassy"...
- Page 12 The original size of the C30 capacitor is 1 F, and this is a bigger value than in any other icom hand microphone I know of. This is why it will allow a lot of bass to pass through, and this is why it will sound "bassy"...
- Page 13 If your IC-7000 has been modified internally (microphone preamp.) you will probably not notice any difference with this modification. This is the case with most IC-7000 radios sold in Scandinavia. They sound good in SSB-mode, but a little low on bass in FM-mode. There is no need to modify these radios any further (leave them as they are).
- Page 14 Increase the TX power of IC-7000 Contact author: Bill Want to increase the TX power of your IC-7000? DO THIS AT YOUR OWN RISK!!!!!!! Build an adjustment jig plug by taking a 2-conductor 3.5 (d) mm (1⁄8″) plug and short the tip to the barrel.
- Page 15 IC_7000 Export No 8 to receive PAL TV in South Africa and TX mod Contact author: Gary Immelman ZS6YI Modifying the Icom IC 7000 Export version No 8 to receive PAL TV in South Africa and to open up the TX frequency range.
- Page 16 Label on IC 7000 box #8 Export model Remove the CPU/Logic unit Step 1...
- Page 17 Unclip the spring clip situated at the back mid right hand side of the radio Step 2...
- Page 18 Remove the DDR unit first then the main board Step 3 Very carefully unplug ribbon cables. Don't pull on them! Step 4...
- Page 19 Original 5.5 MHz SMD ceramic filters Step 5 New 6 MHz Ceramic Trap Filters Step 6...
- Page 20 Original Diode Positions Step 7 New Diode positions Step 8 OPERATION Connect the power supply to the radio and couple a TV antenna terminated in a PL259 plug to the VHF antenna socket of the radio. (Right hand side of the radio as seen from the front looking towards the back).
- Page 21 To change the frequency press the ADJ button and tune in the station using your VFO knob. You can do quick frequency movements by pressing the TS button. Once you have found a station (audio only) press SET at the bottom of the screen. You should now see a picture.
- Page 22 Expanding TX Frequency Coverage for the IC-7000(#02) Contact author: Stephane Technical Information (Ref No. : ZSL00006 / date : November 28, 2005) Following information is regarding the modification of expanding the TX frequency coverage of the IC-7000 Remove the 8 screws from the upper cover (not the screws of the loudspeaker) ...
- Page 25 Gary Immelman ZS6YI In South Africa the TV audio frequency is different to that used in other parts of the world. We use 6 MHz instead of 5.5 MHz as used in the Icom IC 7000 export #8. The ceramic trap filters have to be replaced. They are situated at the bottom of the Main Board.
- Page 26 10. Plug in the two ribbon cables from the DDS unit into the Main board before fitting the Main board to the chassis. 11. Replace all screws and tighten. 12. Plug in all the cables, re-fit the CPU/Logic unit etc. 13.
- Page 27 Remove the CPU/Logic unit Step 1...
- Page 28 Unclip the spring clip situated at the back mid right hand side of the radio Step 2...
- Page 29 Remove the DDR unit first then the main board Step 3...
- Page 30 Very carefully unplug ribbon cables. Don’t pull on them! Step 4 Original 5.5 MHz SMD ceramic filters Step 5...
- Page 31 New 6 MHz Ceramic Trap Filters Step 6 Original Diode Positions Step 7...
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Page 32: Operation
New Diode positions Step 8 OPERATION Connect the power supply to the radio and couple a TV antenna terminated in a PL259 plug to the VHF antenna socket of the radio. (Right hand side of the radio as seen from the front looking towards the back). When you switch the power on a warning message will appear on the blue screen. - Page 33 on, push the set button (volume control) once again. The TV receiver will now come on. It is advisable to switch on the preamplifier. By using the Band up and down buttons you can change TV channels, select a channel. To change the frequency press the ADJ button and tune in the station using your VFO knob.
- Page 34 Finally OM Ken G3SDW who initially discussed changing the sound filters with me. His email inspired me to get cracking. In Conclusion For those South African Hams who have purchased the American model. I am working on a modification to change the NTSC system to PAL. It involves changing a number of parts on the main board.