Fm Radio Recalibration

[Chris Rogers]

I have worked it out!!!

this is NOT a DIY task. I spoke to clarion USA this morning and grabbed a service manual for a PN-2615 for note taking and comparision to a 2413E /2414E (one is the bose version one is the plain one.)

bear in mind I have BOTH service manuals here to compare with.

two major things differ. Main Processor ( this sets the FM scaling I'm lead to believe) and Radio front end.

for the 2413E the radio front end is setup in this fashion

AM - 522-1620 Khz - 9Khz steps

FM 76.0-90.0 Mhz 100Khz steps

for the 2615E its setup this way:

AM -520-1710Khz 10 Khz steps

FM 87.6-107.9 Mhz 200Khz steps

the processor controls tuning voltage and PLL functions.

externally across the PN-2413E and the PN-2615E they have the same chassis apart from the CD changer. the 2615E changer pinout is 180 deg OUT of sequence with the changer used with the 2413E. that means a full board swap is out of the question.

that leaves a FULL unit swap in which case those WITHOUT the OE Navi option can do it. processor on the USDM unit will run everything. the KEY difference between your radio and the NAVI version is the 8 PIN AUX IN . Cars with out Navi do not use this option. so to fix yours you need a PN-2615E or the COMPLETE ASSEMBLY off ebay.

for those WITH OE navi the process differs. it will require a FM Front END swap and a Processor swap.

currently I'm looking at the USDM items as this is what I have to work with. once Clarion Oz reopens I'm going to look at LOCAL units for a LOCAL processor so you get the correct FM/AM bands

Locally the RADIO front end is setup in this fashion:

FM 87.7-107.9 50Khz steps*

AM-522-1629 9Khz steps

*(you see it as 100Khz. the audio is set up as 30hz-15Khz with the stereo carrier at 19khz. the rest is a guard band)

so if anyone knows where I can find a 350z radio or 2004 Pathfinder radio then I'm ALL ears. and I'm not fussed on the audio side of it (IE bose or not.) as I need the model number of these units so I can compare notes. ideally I would like a chassis to compare against the PN-2413E I have here.

balls in your court now

[zei20l]

geez! nice work chris! probably wouldnt mind this upgrade at all!

[rs73]

Looks like more mods to do!

My wife's been complaining how 'fuzzy' the radio is... having 101.1 FM & 101.9 Fox stations converted on 81.1 & 81.9 positions, combined with 91.5 Vega in the middle at 81.5 position, 3 stations so closely together is not very good. Vega comes out best (91.5 Mhz on 81.5 position), with the other 2 rather fuzzy or 'ghosting' effect...

[Chris Rogers]

Rianto,

yep.

These things will have to be on an exchange basis. it is NOT something I can do on a trip out of town as I NEED my workbench to do them. (sorry victor )

for those with 70th aniv. cars these run a DIFFERENT radio ( they run a PN-2615E) the ones I mod currently are PN 2413E.

if someone has a PN-2615 they have pulled out - I'm all ears.

later cars (IE 2004.5 + ) no rework yet. I cannot find a unit that will keep the MD working.

[Chris Rogers]

ok I have a BOSE radio now. (thanks Vish!) time to fiddle

see HERE for what I have been up to with a normal radio.

[Chris Rogers]

ok now I have a plain one (non bose.)

[rs73]

any update?

[Chris Rogers]

not yet. still waiting on a tuner for it. I have the processor here.

will update once I get it right.

[Chris Rogers]

processor swapped out - 100pin ASIC = absolute PAIN IN THE ARSE to remove. putting it back on - easy. no tuner yet (still waiting) so I can't fire the unit up without it having a heart attack.

[Chris Rogers]

update:

still trialing the 2413/14 twins.

The 2004 spec radio (PN2613) has been sussed out. I found a processor that will run with it. going to take a bit of fiddling but its definitely doable!!

experiments start once I get the processor here.

need to start on the 2005 version properly now. I'm going nutty looking at 4 schematics/ 2 chassis's at the same time.

Jon Chan,

expect a call on the white car in about a week. yours was one chassis I've modded, no stacker for it -YET.

[lyons]

howd ya go with the 2003 bose setup??

cheers

peter

[Chris Rogers]

I did a non bose one first up. the bose version gets donethis week in the same fashion as the other. I'll test mule it for a bit before I go further. short version - it works but needs tweaking so that the whole sytem works as its meant to. currently I run the non bose one without the stacker attached.( I keep selling the stacker thats meant for it!)

only issue with you lot is going to be cost. I'm doing these simply because I was told I couldn't. for a fully reworked (radio and CD) its NOT going to be cheap.

radio only will be a LOT more than the cost of an expander but it will give a fraction of the issues.

put plainly I spend the best part of 6 months on this and I'm not letting it go for nix.

[Chris Rogers]

finally have the later (2005) version radio service book here. time to play properly now.

anyone have a spare on of these radios I can muck with?

[Chris Rogers]

ok for the 2005 radio I see a couple of 'settings' I would love to play with. I need a radio.