Question about Pioneer DEH-P690UB CD Player

4 Answers

Pioneer DEH-P690UB FM tuning problem

Hi there, i have the above stereo and am having problem tuning to certain stations. i can tune odd frequency stations such as 98.1 or 102.7 but can seem to tune to a even number station such as 104.2 or 102.2. it seems to only scan odd numbers. jumps from 98.1 to 98.3 and doesnt pick up 98.2. i have set it to LOC off and tested with all 4 levels available and still no joy!!!! coul dyou please HELP as i cant listne to my favourite stations and cant get traffic reports every morning ;(

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  • Curley72 Aug 26, 2007

    Hi Duncan, thanks a million for the solution. i will remove the unit and have a look. i read through the manual but it doesnt state anything about the switch. the manual is very basic. if you have the details, i would really appreciate it if you could forward it on to me.
    thanks.

  • Curley72 Aug 27, 2007

    Hi, I pulled the unit out and had a look around. there was no switch visible. I even took off the top cover and could not see any switch anywhere. Please advise!!!! :(

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Pioneer have factory set your DEH-P690UB to 0.2Mhz steps to match the American FM frequency allocations. The fix is not casual as it requires complete disassembly of the head unit and repositioning of two surface mount resistors. This will void any warrantee and unless you're good at microscopic soldering could also ruin the set. I did however void my 2 year warrantee yesterday partly out of frustration and because I have the right SMT tools at work. Now my tuner CPU thinks it's in the Austrailian/Asian model DEH-P7950UB and is also compatible with UK stations. A previously hidden menu is also available where I can set either 0.1 or 0.05Mhz stepping for FM and 9 or 10KHz for AM BSM scanning. The rotary control now steps in 0.05's instead of odd 0.2's on FM Hope this helps.

Posted on Sep 21, 2007

  • Martin B
    Martin B Oct 26, 2007

    Finally got round to writing the definitive guide to modifying this excellent head unit that doesn't work properly outside the US

    http://www.sparkgap.co.uk/misc/DEH6900UB...

    Enjoy

  • Shane Saliheen
    Shane Saliheen Feb 18, 2014

    Hi Martin, Can you repost the link ? I cannot open it. I have the same problem and would like to find piy how you fixed it. Thank You. Is there any way i can email you ?

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Pioneer DEH-7950UB can only support hard drives which draws current of 500mA Maximum. If your hard drive consumes more than that, it will not read the HD. However, external HDs have power adapters to compensate the power needed.

Posted on Feb 06, 2008

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I have Pioneer DEH-P7950UB and its cant support 120GB wd Hard drive. I saw on internet its support 250GB other china make support this USB why its not supporting as pioneer specification

Posted on Nov 06, 2007

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Look for a small switch on the side or top or bottom or back of the unit that will switch the frequency "jumps". You will have to pull the radio out of the dash in order to see the switch and they are usually behind a small rectangular hole and do not protrude outside the case of the unit. If you have an owners manual it will tell you exactly where this switch is. Good luck.

Posted on Aug 24, 2007

  • Cihan Subasi
    Cihan Subasi Mar 12, 2015

    Is it possible that you send the visual info about where the switch is and how to set it? thank you apprecitae your help

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