boss de-200 service manual

boss de-200 service manual

Please do not offer the downloaded file for sell only use it for personal usage. Looking for other manual? For this no need registration. May be help you to repair. You could suffer a fatal electrical shock. Instead, contact your nearest service center. Note! To open downloaded files you need acrobat reader or similar pdf reader program. In addition, Also some files are djvu so you need djvu viewer to open them. These free programs can be found on this page: needed progs If you use opera you have to disable opera turbo function to download file. If you cannot download this file, try it with CHROME or FIREFOX browser. Translate this page: Relevant AUDIO forum topics: Phonic MAX 2500 Clippeles Udv. A cimben emlitett erositom egyik csatornaja nagyon alacson jelszintnel elkezd torzitani. Ilyenkor a vegfokot meghajto muveleti erosito kimenete az egekbe szokik. A vegtranzisztorok megsem kovetik ezt. A tapfeszultsegeket megvizsgaltam. Egyik alkatreszen sem lathato fizikai hiba vagy egesnyom. Kis jelszintnel tokeletes jelet ad az erosito. Az erosito rajza megtalalhato ezen az oldalon. Autoradio CD-s Koszontok minden tanyalakot. Renault kazettas radiot szeretnek cserelni CD-s radiora. A kazettas Philips, es tunerlist feliratu, a CD-s VDO es updatelist feliratu. A CD-s nem jelentkezik a kijelzon, ergo nem tudom bevinni a kodot.Azt mar tudom, hogy a tunerlist az I2L-vel kommunikal, de tobbet nem.Gabor Lenco SCDI-01 tip.A cimben reszletezett hibajelenseg okat keresem, de egyenlore nem tudom a megoldast. Bovebben: van a radioban egy LS7314S tip.A bemeneten szkopon latom a tuner jelet, de az IC kimeneten semmi sincs. Ha kikapcsolom a keszuleket es ujra bekapcsolom, akkor rendben mukodik. Talalkozott mar valaki ilyen hibaval. Esetleg van valamilyen feltetel ami az elso bekapcsolaskor nem teljesul. A tapokat jonak merem. Az IC-rol doksit nem talaltam, helyette az SC7314-et vettem alapul. A radiorol semmilyen rajzom sincs(Lenco SCDI-01). Ha tud valaki segiteni elore is koszonom.

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Udv:Laci T-box MA 120 aktiv hangfal erositoje beteg Kedves Kollegak! Leginkabb egy rajz lenne jo ehhez a keszulekhez. Ket db TDA7294 van benne.az egyik a sajat hangszorojat hajtja, a masik ki van vezetve egy kulso passziv ladahoz. A sajat vegfok ki volt durranva es vitt magaval par smd ellenallast. Ezeket erzes szerint potoltam.(jelentektelen helyen voltak). Tudom, hogy ez a leggyakoribb veg IC, de en nem hasznaltam (jobb szeretem a diszkret vegfokokat).nezegettem a gyari rajzot. Mindket IC-re igaz, hogy a 9-es labon 1V, a 10-esen 2V egyent merek (stby es mute) szerintem ez keves. A 2-es labakon ott van a jel, de a kimeneteken semmi. A sok kis suru smd kozott igen nehezkesen merek, de szerintem a 9-est es 10-est fel kellene huzatnom tapra. Jol gondolom??? Hany KOhmmal. Ahogy neztem, van rajtuk egy-egy 10 mikros elko a test fele, egy-egy 6K koruli ellenallas es ezen egy vissziranyu dioda. Ha valamelyikotok tudna szerezni egy pontos rajzot azt nagyon megkoszonnem!!!You can write in English language into the forum (not only in Hungarian). Terminal connectors: - signal input - direct out - mixed out - inverted (phase) mixed out - trigger input - 3 footswitch inputs Special sampling mode records a short 640 mS sample triggerable by an external signal such as a drum machine. Sync delay time can be set with external external analog signal signal into the TRIG IN connector - works very nice with vintage drum machines generating trigger pulses like Roland TR-808. LFO a single triangular modulator routed to pitch modulation with variable depth amount. Learn more Those are: output of the effect unit is very low in the volume while the input would overload at slightest increase of the input knob. The unit can be quite difficult (and frustrating) to operated under these conditions. Here is why. This effect expects a low signal source such as the guitar at its input. Further more, it expects a guitar amplifier at the output.

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In typical synth based studio the setup is reversed actually. We also want effect unit to add a little or no amplification at the output (also known as Unity Gain). If you connect a synth with max output gain to the DE-200, you'll soon overload the input stage, while output will be very silent forcing you to add a lot of gain at the console. This mod solves all these issues and converts DE-200 into a keyboard signal-level accepting unit with approximately -10dB level signal at the output (typical for average synth). Gain Modification First thing we want to do is to reduce the input impedance and gain. This will reduce the noise as well. Here is the schematic which shows a R10 1Mohm resistor which should be replaced with 10k metalfilm resistor. A better look at the schematic reveals a high pass RC filter made with R10 and C3. To retain the properties of the input filter we need to replace the C3 as well. Important: Since you will most likely use the electrolytic cap you need to pay attention to polarity of the cap. Polarity must follow the signal, and as we all know the signal goes from the input jack to the op amp thus you should orient positive side of capacitor to the R1 and negative to the op amp. This finishes the input buffer and impedance modification. Now we come to the Roland's pre-emphasis part of the machine built around IC 2b where additional gain is built. Pre emphasis is basically a high pass filter with gain defined by R6, R7 and R8 resistors and corner frequency defined by C5. Our goal is to have near 0 dB of gain of the filtered signal and amplify only the non filtered part. We will achieve that by replacing resistor R8 with 110k ohm value. This effectively reduces gain from 19dB to around 13dB at 10kHz. Or globally, we reduced gain of the input stage for a total of 15dB. Default gain is a little bit weak for average console, since it is expected a guitar player will us an amp, rather than line mixer.

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We will increase the gain replacing R159 with 47k and R158 with 220k ohms. It is necessary to replace C109 as well, since we're working on a low pass filter in here made of R158, R159 and C109 (ignore the C110, it's purpose is something different and unchanged value isn't that critical unless you live right across FM transmitter). Same applies to C7. Both can be left at existing values. This completes our modifications. Try DE-200 without the mod and then with the mod. Totally different units. More dynamic range, much much less noise. If you want more, please continue to read. Crazy Ivan modification (addendum for experienced) While calculating component values for the de-emphasis part i came with one idea to try. How would machine sound if we would have the signal partially pre-emphasized and passed thru. The rest was easy. In fact this is uber-simple yet very effective modification for all of you experimenters and le sonique bizarre aficionados. The best part is that it includes one of the components that you already need to replace during the previous gain modification. In the image above, points A and B mark the place where existing C109 capacitor is, which you need to replace with 1nF as detailed earlier. However, while replacing it, you can solder just one of its legs, then use a wire and lead it to the switch, which can be placed on the front panel. From the other side of the PCB, in the same place you can solder another capacitor, this time 100pF value and again lead it with a wire to the switch. Just measure everything carefully. I strongly advise you to start drilling from the front side, with the plastic panel on. Once you get the small hole done, you can remove the plastic, and use correct width for metal drill so that switch perfectly fits in. Please do not place nut on the front plastic. You will make the unit look ugly for no reason. Because there's a metal plate right below the plastic where a nut can be placed and tightened.

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Installed and ready to fire. The goal of such modification is to make it non destructive (a click of a switch resets the unit to original sound) and of course to maintain the sleek design of the unit. What this modification does is that it shifts the de-emphasis curve (low pass) from the 600Hz up to the 6kHz. Result are really exotic and make the unit cut through the mix like a razor. Use carefully though, since harsh delays can irritate the listener after a while. Flanges and Choruses with Crazy Ivan are interesting as well and give some extra edge to the sound!! Unit can be used for processing drum beats as well (feedback set to 0) particularly because the signal path contains some exotic elements like a compression, dynamic expansion and the emphasis. The work detailed in this article can be performed under one hour. This article is a part of Service and modifications thread. Please visit here for more: Copyright Don Solaris 09.20.2012. I have made the above modifications (not including Crazy Ivans ON?OFF mod) and plugged in my unit to try it. I only use the rear input and mixed output but unfortunately I do not get any echo out of the machine after the modification. On the front panel I can see the unit is giving echo as the lights flash up and show repeat. I am wondering if the above modification only works if you use the front input and output, which I haven't tried as yet (I hope not as I always use the rear connections to keep the rack tidy). Please can anyone shed some light??? As I have now a previously working unit not working:( Many thanks SceeReason: why quoting whole text???I have made the above modifications (not including Crazy Ivans ON?OFF mod) and plugged in my unit to try it. Please can anyone shed some light??? As I have now a previously working unit not working:( Many thanks Scee I am getting an echo but its seriously low volume compared to prior modifications. Are there any mods needed to boost the output. Although I thought this.

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Was part of the mods already made as above?It works excellent and made the unit totally different in an awesome way - clearer sound and echos, no more distortion, way more dynamic range, just generally higher quality sound and I guess what it's supposed to sound like. And yes, I use the rear inputs and outputs. Maybe you installed something wrong, or installed the wrong component in the wrong place, or broke a trace on the pcb. I would recheck and resolder the components that were modded. Mine works perfect after the mod.I say this because I had an old SDE-1000 Roland rack (before it broke). And i too noticed it had the very similar problem as the stock DE-200 - way too sensitive on the input gains, always clipping very easily and at the same time the output was low. So, there's a possibility that the majority of vintage early 80s Roland, Boss, Korg, etc racks were built this way similar impedances of guitar pedals. I'm not 100 positive though. Maybe same thing goes for even older units, that are nice, like the Tape Echos, analog 1010 1005 yamahas, etc.I'm unsure too, since I've never owned those nice old tape echos and analog delays.but if you think about it, if a boss de-200 made in '83 had guitar pedal impedances, then theres a good possibility that older '70s units were the same way.The difference is worlds apart. It opened up the sound. The DE200 sounds somewhat like a Roland SDE-1000 now. It's a bit more difficult to do the DE200 compared to the CE300 as the components are smaller in the DE200. Regarding the Boss Micro racks; as far as I know they are all line level devices and thus do not need this mod. The SDE1000 should not need any mod to sound okay. It's made for studio use not guitar input.Anyone stymied by part selection or where the components are located on the PCB might be helped by this guide: Boss DE-200 Digital Delay Line Level Mod - R-Massive The difference is worlds apart. It's made for studio use not guitar input.

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I'm keen to try this mod to see if it improvesI've just done this mod - I loved the unit before, and time will tell if I preferred it one way or the other, but I am immediately struck by much greater clarity, lower noise, greater dynamic range.Memorials, RIPs and Obituaries Grove Park, Maidenhead, Berkshire SL6 3LW.Hosted by Nimbus Hosting. Tired of downloading the same vague schematics from yet another website, the copy that is copied ad infinitum on the web. Or did you buy a CD on eBay, full of the same rubbish. Time is money, and especially so for technicians. Time that should be dedicated to repair and not wasted with the frustrations of searching for a decent service manual. So here is a site with only high quality, high resolution service manuals, most of them carefully cleaned, restored and sometimes partially re-drawn. Here you will find no unreadable drawings or manuals with crucial pages missing. Here you get what you need for the job and get on with it. Free downloads instead of paying silly money for an email with attachment. Of course hi-res means large files. They can be up to 8 times the size of a lo-res scan. That means they need much more server space, space that has to be rented at costs that will come back every year. And many of the manuals you will find here had to be bought as hard copy originals from the manufacturers before they could be scanned at all. Most of this is funded privately, but there is a limit to this budget. Yes, you got it. donations. When this service is useful to you, and you not only want it to continue but to expand as well, that's the way. Contributions received will immediately result in more server space, giving room for more service docs. Donations will also open the way for later additions, such as synth chip data- sheets, synthesizer spec sheets, etc. Your donation will help to make this site a database for synth technicians as never before available on the world wide web. ENJOY! Needs replacing).

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Close Service Contact us Help The old delay was nice, but one of my band's repertoire has some songs that need exact BPM for delay and these songs might come up in a set suddenly, just when the singer decides to sing them and I have no time to tap it in correctly. And I messed up quite a lot of these songs' intros. But now Boss DD-200 having 4 memory slots is enough for me, especially in a relatively small dimensions on pedalboard. DD-200 sounds good, it has many modes and they are all tweakable to great extent, anything you can think of, you can tweak it. I usually stick to tape or analog modes and the possibilities are sure too complicated for a beginner, for instance you can adjust different tape heads which play the echo back, how worn the tape is, wobble etc. Almost only reason why I gave it total of 4 stars, is because of re-editing the sounds that are in memory slots. The problem that I pumped into is when I want to tweak something in memory slot's sound. How could I possibly know if it was previously 21 or 22 or 34. Sometimes changing it from e.g. 15 to 17 makes already important difference. Sure, you'll get it right at the end, but it takes much more time than needed. Some other companies have solved this issue in digital pedals by indicating the original value with blinking etc. And I guess it's easy to be done via USB, but should I have my computer in soundcheck. But everything else, I'm very happy with it, MIDI connection to control it by remote switching system, great quality jacks, sturdy casing. Memory slots and small size are the reasons why I chose DD-200 over Strymon, TC Electronic, EH or other brands. In that perspective there is no competition (at least in 2019-2020 season). Send report Total handling features sound quality Nice but. Zafos, 04.07.2020 Good delay, but a little thin sounding compare to my DD3. One downside is that you can't see the settings of the saved patches.

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Went with the Boss DD-500 instead, more choices and the vintage digital delays are exceptional. Send report Total handling features sound quality Boss DD200 Andrikkos, 01.10.2019 This is a great all around delay pedal. Can do so much different styles and the settings on the unit lets you control everything to taste. Great delay pedal to have and can stand alone in come cases with how crazy the delays can get. Clean and clear audio quality and repeats. Send report Total handling features sound quality Lot of Delay! Mood44, 23.11.2019 Easy to operate and great sounding pedal. I choose the DD-200 because of easy editing instead of going through menu's. Also storage of own presets is great to have and easy to access. Stereo Image is great too. Also blends good with other pedals. Send report 11 text reviews in other languages available Rate product VAT Dispatch expected by Thu, 13. August Available immediately Available immediately This item is in stock and can be dispatched immediately. Standard Delivery Times Modulation Effects Pedals The term ?modulation? in its broadest sense covers a range of sonic effects, from the subtlest chorus to ear-bending ring modulation. Youtube Show all BOSS: DD-200 Digital Delay. A cruise through the delay types. Hydraulic flows based on 4.48 C.I.R. motor requirements at 2600 psig average.While there are standard safety rules, each situation has its own peculiarities that cannot always be covered by rules. Therefore with your experience and common sense, you are in a position to ensure your safety. Lack of attention to safety can result in: accidents, personal injury, reduction of efficiency and worst of all - Loss of Life. Watch for safety hazards. Correct them promptly. Use the following safety precautions as a general guide to safe operation: Do not attempt to remove any compressor parts without first relieving the entire system of pressure. Do not attempt to service any part while machine is operating.

Periodically check all safety devices for proper operation. Do not play with compressed air. Pressurized air can cause serious injury to personnel. Exercise cleanliness during maintenance and when making repairs.Do not install safety devices other than authorized BOSS INDUSTRIES replacement devices. Close all openings and replace all covers and guards before operating compressor unit. Tools, rags, or loose parts must not be left on the compressor or drive parts. Do not use flammable solvents for cleaning parts. Keep combustibles out of and away from the Compressor and any associated enclosures. The owner, lessor, or operator of the Compressor are hereby notified and forewarned that any failure to observe these safety precautions may result in damage or injury. These decals must be affixed to the vehicle after it has been painted, trimmed, and undercoat, etc.The decals shall be placed so as to be clearly visible to the user and service personnel. (Figures 1 through 6.) Figure 1. To be placed on visor or dash near start-up procedure decal. Sometimes referred to as the separator element. CFM - Refers to the volume of compressed air being produced expressed as cubic feet of air per minute. LOAD CONTROLLER - Sometimes referred to as the engine speed control. OIL SUMP - The first stage of oil separation from compressed air. Also serves as reservoir area for compressor lubricant and sometimes referred to as the receiver tank. PSI - Refers to the operating pressure the system is set up at, expressed as pounds per square inch. SAFETY VALVE - A valve located on the oil sump which opens in case of excessive pressure. Sometimes referred to as the pop-off or pressure relief valve. SHUTDOWN SWITCH - Works in conjunction with a temperature and pressure switchgauges, sending a signal to stop the compressor power source in cases of high temperature or pressure. SIDE MOUNT PTO - Power take off gearbox that bolts to the side of the transmission.

The PTO input gear with one of the gears in the vehicle’s transmission. The rotation developed by the engine drives the transmission which turns the PTO gear box and rotates the PTO output shaft, driving the compressor. ADAPTER GEAR ASSEMBLY: SIDE MOUNT PTO - The adapter gear assembly and the side mount PTO are assembled to the side of the transmission. Typically a PTO box installed on a manual transmission will require an adapter gear assembly in order to obtain the proper engine rotation required by the compressor. Most automatic transmissions utilize engine rotation PTO’s. Consult Boss Industries Inc. Components include a housing (stator), two screws (rotors), bearings, and bearing supports. Power from the engine is transferred to the male rotor through a drive shaft and gears in the gear housing. The female rotor is driven by the male rotor. There are four lobes on the male rotor while the female rotor has five roots. PRINCIPLES OF OPERATION In operation, two helical grooved rotors mesh to compress air. Inlet air is trapped as the male lobes roll down the female grooves, pushing trapped air along, compressing it until it reaches the discharge port in the end of the stator and delivers smooth-flowing, pulse-free air to the receiver. During the compression cycle, oil is injected into the compressor and serves these purposes: 1. Lubricates the rotating parts and bearings. 2. Serves as a cooling agent for the compressed air. 3. Seals the running clearances. LUBRICATION SYSTEM Oil from the compressor oil sump, at compressor discharge pressure, is directed through the oil filter, cooling system, and to the side of the compressor stator, where it is injected into the compressor. At the same time oil is directed internally to the bearings and shaft seal of the compressor. The oil-laden air is then discharged back into the sump. OIL SUMP Compressed, oil-laden air enters the sump from the compressor.

As the oil-laden air enters the sump, most of the oil is separated from the air as it passes through a series of baffles and de-fusion plates. The oil accumulates at the bottom of the sump for recirculation. This valve acts as a backup to protect the system from excessive pressure that might result from a malfunction. When air is demanded at the service line, it passes through the coalescer which efficiently provides the final stage of oil separation. OIL RETURN LINE The oil that is removed by the coalescer accumulates at the bottom of the can and is returned through an oil return line leading to the compressor. MINIMUM PRESSURE ORIFICE The minimum pressure orifice is located at the outlet of the coalescer head and serves to maintain a minimum discharge pressure of 65 PSIG in operation, which is required to assure adequate compressor lubrication pressure. OIL FILTER The compressor oil filter is the full-flow replaceable element type and has a safety bypass built into it. COMPRESSOR COOLING SYSTEM (STANDARD) The compressor cooling system consists of an oil cooler remote mounted aerodynamically designed cooling pressure or a cooler mounted in front of the truck’s radiator. Oil temperature is controlled by a thermal switch or a valve located down stream of the oil filter. It is designed to be mounted inside the cab or in a protected area outside of the cab. Operate compressor within the discharge pressure limits as indicated in specifications section. HOURMETER The hourmeter records the total number of operating hours. It serves as a guide in following the recommended inspection and maintenance schedule. The hourmeter will only rum when there is pressure in the system. The switchgauge ensures safety shutdown in case of excessive operating temperatures, preventing compressor damage.

ELECTRICAL AND SAFETY SYSTEM The BOSS compressor’s standard electrical system consists of a gauge panel; a remote mount 12 VDC fan package with fan switch and relay assembly (for standard cooling system only); and a resetable normally closed shutdown switch. These components are integrated together to provide a safety shutdown system that is activated when extreme high temperature or pressure conditions are present. When the temperature or pressure exceeds the maximum set parameter of the respective switchgauge a signal is sent to “trip” the shutdown switch from normally closed to open. This signal will then shut off the engine in vehicles equipped with a CABLE PTO or disengage the PTO in “HOT SHIFT” PTO applications. ELECTRONIC ENGINE INTERFACE Electronic engine interface for the compressor speed control incorporates several BOSS supplied electrical components that are chassis specific. A chassis specific wiring diagram and electrical components are supplied per the vehicle application data at the time of the order. It is located at the downstream side of the coalescer head and will automatically bleed the sump to zero pressure when the compressor is disengaged. Blow down time interval takes between 30 to 60 seconds. CONTROL SYSTEM The prime component of the compressor control system is the compressor inlet valve. The control system is designed to match air supply to air demand and to prevent excessive discharge pressure when compressor is at idle. Control of air delivery is accomplished by the inlet valve regulation and modulation as directed by the discharge pressure regulator. DISCHARGE PRESSURE REGULATOR VALVE This valve, located on the coalescer head is used to set the desired discharge pressure within the operating pressure range. Turning the regulator screw clockwise increases the working pressure, a counterclockwise movement of the screw reduces the working pressure. This system has a maximum operating pressure of 175 psi.

NOTE: Most air tools operating pressure range is between 90 and 125 psi. Operating above the tools recommended pressures will decrease the life of the tool. Higher operating pressure can also over torque nut and bolts fatiguing the fastener and mating parts. Strictly adhere to tool operating pressures and torque standards set forth by the tool manufacturer and the specifications of the equipment that work is being performed on. For the working pressure range of your machine, refer to applicable data in “Specifications”. The pressure regulator, mounted on the coalescer head, operates as follows: 1. As the demand for air decreases, the receiver pressure rises. When this pressure exceeds the set point of the pressure regulator, the regulator opens sending a secondary pressure signal to the inlet valve, and in case of two speed, engine speed controls, a timer is activated to slow the engine down to compressor idle. The poppet valve moves towards the valve inlet seat against the force of the modulating spring inside the valve. The importance of performing the maintenance described herein cannot be over emphasized. The periodic maintenance procedures to be performed on the equipment covered by this manual are listed below. It should be understood that the intervals between inspections specified are maximum interval. More frequent inspections should be made if the unit is operating in a dusty environment, in high ambient temperature, or in other unusual conditions. A planned program of periodic inspection and maintenance will help avoided premature failure and costly repairs. Daily visual inspections should become a routine. The LUBRICATION AND MAINTENANCE CHART lists serviceable items on this compressor package. The items are listed according to their frequency of maintenance, followed by those items which need only “As Required” maintenance. The maintenance time intervals are expressed in hours. The hourmeter shows the total number of hours your compressor has run.