Does anyone have a service manual / schematic for a Luxman CL-36 control amp / preamp? I just got one and it is functioning flawlessly but would like to do a refresh. If you have one or know how I might get a copy, would be greatly appreciated.
Luxman CL-36 service manual / schematic?
- Thread starter jefferylhenr
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- luxman cl-36 manual
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gkargreen33
Member
Just got a CL-35 mkIII myself just last week, I am really digging it with the Cit V! Just wondering about replacing the coupling caps, they look like metallized films and want to go to film/ foil. Is yours a 100 volt model? Be careful to run it on the correct voltage!
Mine is a 100 volt model. Just finished a fairly deep restoration but left all the films alone. Most of what needed attention were in the power supply and related. The power filters were fine, but replaced them anyway. I don’t like the need to go back in so try and address everything the first time. It sounds fantastic, don’t know how it could sound any better. Still waiting on the refinish of the cabinet. I also have a Citation I which I restored last year. I am going to hook th CL-36 up to my accuphase p300v sooner or later to hear what that sounds like. I may like it better than my accuphase c200v. Looking for a set of Luxman MB3045 monoblocks to eventually match with the CL-36.
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I did stay with all the original uf values but went higher on voltages. I went with Mundorf for the power filters and nichicon in the regulated supply. And primarily Ukl’s for the rest and a few wirths / ufg’s where appropriate for electrolytics. Overall it looked pretty good inside. And it came right up and stabilized at about 100mV lower mainline draw.
gkargreen33
Member
I do have the manual for my CL-35 Mk III, including schematic, in Japanese unfortunately. I could send you a copy of the schematic, but looking at the innards of yours, it looks significantly different from mine, although I haven't taken it down like you have. One thing I note are the Rifa caps on the mains outlet plugs, get rid of those as they are high failure! I went and checked mine out, since the PS caps are two-section and Chemicon, I left those alone as Chemicons are really good quality. Those big blue couplers, what are they? Certainly not the gray NTK metallized, which I want to replace in mine with film and foil caps when I get some of reasonable size!
I won’t ever use those accessory plugs. And.. they must be quite reliable as the have been fine for 45 years. What makes you think they are “unreliable”. I can always change them out when I have it open again, but stacked films almost never fail? Are you just reading forums or have first hand knowledge?
gkargreen33
Member
Rifas are known failure points in all equipment, Adrian Black and others say the same and instantly replace them with proper xy rated caps. I can see the cases are already cracked, these caps are always energized as they are across the mains, and when they blow, they emit selenium gas, which stinks like garlic and is toxic, FWIW.
Old Rifa's always blow up, seen it in Yamaha, Setton, Scott.
I have a manual that you I downloaded. I think you can also reference the cl-35 as they are similar
Thank you, but the PSU seem to be different in the cl-35 and the problem in my unit is with the PSU...
I downloaded my cl-36 manual from hifiengine if I recall.
Can you please share your copy with me?
I can't find this manual at hifiengine / anywhere else...
To be more specific, I'm looking for the schematic of the "PB-1178" PSU board.
I couldn't find this PSU in any other schematic (CL-35 / CL-360).
The PSU I'm working on seems to be overheated.
R-701 has lost his value mark and measured as an
open circuit.
Without a schematic / parts list I have no idea what the replacement resistor should be?
I couldn't find this PSU in any other schematic (CL-35 / CL-360).
The PSU I'm working on seems to be overheated.
R-701 has lost his value mark and measured as an
open circuit.
Without a schematic / parts list I have no idea what the replacement resistor should be?
There are front and back high res pictures of every board here
It’s the 36, not sure why it says 35?
Thanks, it's definitely CL-36, the mysterious resistor value is 4K7 Ohms 
In my unit the large transistor is 2SC3026 (not 2SC1891).
Do you think that the value of the resistor may be different due to the different transistor?
The IC of the 3026 is higher than the 1891(6A vs 1.5A), the Vcb is 1700 vs 1200) and the Hfe is also higher (20 vs 8).
Maybe it would be wiser to find a 2SC1891 and go with a 4K7 resistor or it will work fine with the 2SC3026 and the 4K7?
In my unit the large transistor is 2SC3026 (not 2SC1891).
Do you think that the value of the resistor may be different due to the different transistor?
The IC of the 3026 is higher than the 1891(6A vs 1.5A), the Vcb is 1700 vs 1200) and the Hfe is also higher (20 vs 8).
Maybe it would be wiser to find a 2SC1891 and go with a 4K7 resistor or it will work fine with the 2SC3026 and the 4K7?