Kurzweil K2500 Rack and Keyboard
Contents
1. is the version number Press OK then follow the prompts on the display to load this object set and all of the other object sets that may be required for this instrument s configuration The different object sets are shown in the table below objectSet win OBJKL K25 Live Mode use only if Sampling Option is installed For example if the K2500 has the Stereo Piano ROM and Sampling Options installed you should load the OBJKB K25 OBJKP K25 and OBJKL K25 object sets Note that you must always install the Base ROM objects When the objects have loaded you will again be asked to choose a Device to install from Press Done and you will be returned to the Boot Loader menu 22 Choose Hard Reset from the Boot Loader After you confirm this choice the K2500 performs a hard reset 16 23 Choose Run System from the Boot Loader Confirm that the K2500 starts up with the new operating system and objects Run the Diagnostics 24 Turn the K2500 off since you will need to restart the K2500 to run the diagnostics 25 Press the Power button to turn the K2500 on then press and release the Exit button while the Please wait message is displayed 26 Select Run Diags from the Boot Loader menu Press any key to continue w hen the RAM erasure message appears 27 Choose KDFX Option from the Diagnostics menu this message does not appear turn off the power and review the i2. Board Arrows in Figure 2 and Figure 8 show the locations of the four screws 14 Insert the four large standoffs in place of the Engine Daughter Board screws gt Using a flat head screwdriver tighten the standofts 15 Insert the pins on the bottom of the KDFX Board into J803 on the Engine Daughter Board The best way to do this is to slightly angle the board so that you can position the rear pins first 11 16 178 18 19 12 When the rear pins are correctly located carefully insert the remaining pins into socket J803 on the Engine Daughter Board Apply even pressure to the KDFX Board then inspect the four holes on the board to make sure that they line up with the standoffs on the Engine Daughter Board Secure the KDFX Board to the standoffs using four M3x6mm screws Using a 2 Phillips screwdriver tighten the screws Take the Digital I O Board and remove and set aside the optical connector cap Position the Digital I O Board through the rear panel Digital I O holes Using four M3 0x10 0mm black pan head screws secure the board to the rear panel Then replace the optical connector cap Remove and set aside the screws holding the plate behind the rear panel KDS Output hole Remove and discard the plate If this is a keyboard unit see Figure 14 Attach one of the Cover Plates to the KDS Output Board using the following items Flat washers Lock washers 3 16 hex nuts Use the large Cover Plat
3. deletion This completes the installation of the KDFX Option Be sure to give the K2500 owner the Operating System and Objects disks that came with this kit The KDFX Installer disk however is meant only for service center use 17
4. 2500 Boot Loader viel lt Inetall sete Hard Reset Insta a S Run Dia s Run System Fixed Dia s The Boot Loader s Menus resemble K2500 dialog boxes They consist of a series of labels and a highlight bar you use to select one of the labels Use the arrow keys or the data wheel to move the highlight bar Then press the OK soft button or the Enter key to invoke the highlighted menu option Install the New Boot Loader 4 9 10 11 Check the Boot Loader version displayed on the top line of the screen If the Boot Loader version is the same or later than the version included with this kit then you do not need to install a new Boot Loader skip to Install the Operating System and Objects Insert the KDFX Installer disk that came with the KDFX Option Kit into the K2500 s floppy drive Choose Install System from the menu Highlight floppy at the Device to install from prompt Press OK Highlight the file named K25AB KOS where is the version number Press OK then OK again to confirm When the Boot Block Installer has loaded you will be returned to the Boot Loader menu Power cycle the K2500 i e turn it off then on again Do NOT press the Exit soft button Choose Install BootBlk Highlight floppy at the Device to install from prompt Press OK N WARNING During the next step you will be instructed to install the new standard Boot Loader Do no
5. Kurzweil K2500 Rack and Keyboard KDFX Installation Manual This document instructs Kurzweil service technicians in the installation of a KDFX Option Kit into a K2500R or a K2500 X Keyboard It is intended ov y for authorized Kurzweil service technicians Installation by unauthorized personnel will void the warranty Important Notices The KDFX Option requires K2500 Operating System Version 3 or higher Before Beginning the Installation Back up the K2500 s RAM objects by entering Disk mode pressing the Save soft button and selecting the option Everything to save all RAM objects to a floppy or hard disk Tools and Materials Required For Installation 1 small Phillips screwdriver 2 medium Phillips screwdriver Flat head screwdriver 3 16 nut driver Digital Voltmeter Pliers Components of the KDFX Option Installation Kit i Caution The KDEX Option includes a pair of static sensitive ROMs Observe all precautions for handling electrostatic sensitive devices when installing the ROMS t KDFX Board Digital I O Board small board with two XLR connectors KDS Output Board small board with 15 pin connector Flash SIMM Board Two KDFX Expansion SIMMs DC Power Cable Three wire splices Four large standoffs Two small standoffs hex nuts Two Cover Plates Two flat washers Two lock washers Eight M3x6mm black Phillips screws Four M3x10mm black Phillips screws Operating System and Objects diskettes Only u
6. R and damage the unit Y aes 4 Lift the top cover from the back slide it off and place it aside Notice that there is a groove on the top edge of the front panel that the top cover fits snugly into Smali M3 Screw TT T Small M3 Screw Short M4 Short M4 Screw Screw H j gyz ZS a sO lt Q OPTIONAL q d HARD DRIVE we z Long M4 12 Long M4 QO i _Screws 3 Screws 4 rrer ep pm g diamcan 10 A E R cee Figure 2 Top view of opened K2500R showing locations of Engine Daughter Board screws waned Disassembly tor Keyboard Units 1 Unplug all external wires cables and connectors from the K2500 and turn the unit so that the keyboard faces you 2 Tilt the entire unit onto a soft surface so that it rests on its rear panel Using a 2 Phillips screwdriver remove the screws on the bottom of the unit as shown in Figure 3 The K2500 has six screws while the K2500X has seven each s screw may bei in any one of the three slots of each group along the bottom of the unit ereereee K2500 76 Keys Figure 3 3 Tilt the K2500 so it again rests on its bottom Then use a 2 Phillips screwdriver to remove 9 screws on the rear panel of the unit as shown i in Figure 3 Be careful to remove only the screws indicated Figure 4 4 Place two 3 high foam blocks or other soft items behind the K2500 again these blocks will prevent damage to the K2500 s sliders and alpha wheel Th
7. e if the K2500 has a large KDS Output hole or the small Cover Plate if the K2500 has a small KDS Output hole Discard the unused plate KDS Output Board lt q ls ch ch Flat Washers e Lock Washers Rear Panel Figure 14 KDS Output Board Installation K2500 X Keyboard Using a 3 16 nut driver tighten the small standoffs Then position the KDS Output Board through the rear panel KDS Output hole making sure that the component side of the board faces down Using M3x6 screws secure the board to the rear panel 20 If this is a rack unit see Figure 15 Position the KDS Output Board through the rear panel KDS Output hole the board will only fit through this hole one way Then use the following items to A secure the board to the rear panel Flat washers Lock washers 3 16 hex nuts inl Small Standoffs Rear Panel x Lock Washers gt Flat Washers KDS Output Board Figure 15 KDS Output Board Installation K2500R Using a 3 16 nut driver tighten the hex nuts The installation is complete and you can recalibrate the unit Recalibration 1 Readjust VCC voltage to 5 0 Volts DC Rack With unit turned off attach negative clip lead of the digital voltmeter to the heat sink and the positive lead to Q12 Source Turn the unit on then adjust R180 on the 5 ees supply board until the meter reads within 4 95 5 05 Volts Keyboard Attach negative clip lead of the digita
8. er Cable to the wire connected to pin one of J103 on the K2500 s power supply Important you must make this splice approximately three inches 76mm from the connector Splice the grey wire of the DC Power Cable to the wire connected to pin two of J103 on the K2500 s power supply Important you must make this splice approximately three inches 76mm from the connector Plug the connector on the DC Power Cable into J1008 on the KDFX Board The connector is keyed and can only be inserted one way Also if you ve disconnected the K2500 Power Supply Cable reconnect it at this time Lf this unit has a Sampling Option Board installed follow steps 5 through 10 If this unit does not have a Sampling Option Board installed follow step 11 5 See Figure 8 Locate socket J801 on the Engine Daughter Board Remove the Ribbon Cable Retaining Clip holding the cable to this socket but leave the cable in place WARNING Ifyou do not remove the Ribbon Cable Retaining Clip the KDFX Board will short out when you turn the K2500 on The KDEX Board will hold the cable tn place without a Retaining Chip 6 See Figure 12 for rack units or Figure 13 for keyboard units Locate the Digital I O Board in the rear panel of the K2500 Using a Phillips screwdriver remove the screws holding the board in place Then remove the optical connector cap from this board 7 Remove the Digital I O Board from the rear panel 8 Unplug the 6 pin Dig
9. her Board to the instrument s power supply you do not need to connect the DC Power Cable included with the KDFX Option Kit discard the cable and continue with the next numbered step in these installation instructions Otherwise attach the DC Power Cable as described here Vs NOTE The splices tn this step can only be used once Be certain that you ve connected everything properly L F before you use pliers to close a splice For your conventence the KDEX Option Kit is shipped with an extra splice Insert the loose end of the white wire on the DC Power Cable into the side of the splice with a stopper as shown in Figure 9 Make sure that the wire lies straight in the groove and the end of the wire rests against the stopper End of wire rests against stopper Figure 9 Use pliers to fold over the side of the splice that has the white wire inserted Figure 10 Attach the loose grey wire on the DC Power Cable to another splice using the same procedure you used with the white wire 4 With splices on both loose ends of the DC Power Cable you will now splice the DC Power Cable to the K2500 s existing power cable Use pliers to fold the empty side of each splice onto the appropriate wire in the K2500 as shown here 4 2 Figure 11 Connect the wires as described below You may first unplug the K2500 Power Supply Cable if you find that more convenient Splice the white wire of the DC Pow
10. is will also give you access to the rear panel jacks KK TT A a Hh an tt ee a OS 6 GTS 08 cs a EET SIU Delete 5 Push the top cover with your thumbs as shown below You will feel the top become unlocked and it should slide back about 1 2 Figure 5 6 Lift the top cover up then slide it to the right so the floppy drive clears the top cover bracket as shown below Be careful not to damage the floppy drive Figure 6 Once the top cover is free slide your fingers under the felt attached to the front edge of the top as shown below Then tilt the top cover back placing it up side down on the two foam blocks The underside of the K2500 s top should now face you exposing the circuit boards for service AESI A Lestat IAE E p2 RA gt ATAA EN platen ga nap Figure 7 ENGINE DAUGHTER BOARD J803 J801 wire jumper if present Figure 8 Top view of opened K2500 X showing locations of Engine Daughter Board screws ie oe o m a lH eS as re m Installation g WARNING Avord contact with live voltages in the opened unit 1 Check and record the LCD coarse adjustment setting at J917 pin 4 see Figure 8 on the Mother Board pin 1 is ground The voltage should be between 7 and 10 volis Since you will have to readjust the LCD contrast after you install the KDEX board record the voltage in the space provided below LCD Contrast Voltage Ses Caution Observe all
11. ital I O cable from J1201 on the Digital 1 O board then unplug the 3 pin Optical Out cable from J1205 on this board Leave these cables plugged into the Sampling Option Board 9 Discard the Digital I O Board that you just removed is NOTE The KDEX Option Kit comes with a new Digital YO Board You will replace the discarded Digital LAF YO Board with the one included in the KDEX Option Kit 10 Plug the unconnected end of the 6 pin Digital I O Cable into socket J1003 on the KDFX Board Then plug the unconnected end of the 3 pin Optical Out Cable into socket J1006 on this board The connectors on these cables are keyed so that they will only connect to the board one way 10 11 See Figure 12 for rack units or Figure 13 for keyboard units Using a Phillips screwdriver remove the four screws holding the plate behind the rear panel am I O holes You may discard the plate REAR PANEL REMOVE THESE FOUR SCREWS Figure 12 EDL Qe BR s Remove These Four Screws WTE Figure 13 12 See Figure 8 and locate the Engine Daughter Board Remove the jumper from J805 located to the left of connector J803 on this board Rev C and earlier Engine Daughter Boards do not have J805 instead there is a wire jumper across connector sockets 88 and 89 of J803 Remove and discard this wire jumper 13 Using a 2 Phillips screwdriver remove the four screws that hold the Engine Daughter Board in place Do not remove the Engine Daughter
12. l voltmeter to J711 pin 1 and the positive lead to J711 pin 2 on the Audio Board Then adjust R6 on the power supply board until the meter reads within 4 95 5 05 Volts 2 Readjust the LCD Contrast Voltage to the level recorded at the beginning of this installation Check the setting at J917 pin 4 on the Mother Board pin 1 is ground and adjust it at R72 on the Keyboard Audio Board or R246 on the Rack Audio Board 13 Reassembly Reassembly for Rack Units 1 Reassemble the K2500R by performing the Disassembly steps in reverse order 2 When you have completed all connections slide the top cover back on Be sure to fit the front top edge of the cover into the groove on the top of the front panel 3 Replace the six long M4 screws and the two short M4 screws in the left and right sides of the unit Then replace the two small M3 screws along the top edge of the rear panel WARNING Remember the rear screws on each side of the K2500R are shorter than the other side screws Make sure to 7 use the shorter screws in the back side positions when you reassemble the urit Using the longer screws i these positions could short out some of the components in the K2500K and damage the unit ii tal for Keyboard Units 1 Reassemble the K2500 by performihg the Disassembly steps in reverse order 2 When you have completed all connections tilt the top cover back onto the body of the K2500 First slide the left end into place
13. making sure to fit the Floppy Disk Bezel under the left end cap Figure 16 illustrates the right and wrong way to fit the Floppy Disk Bezel Floppy Bezel Fits E Floppy Bezel Forced Under Left End Cap Over Left End Cap Figure 16 CAUTION be fore you lower the right end of the top cover be sure that no ribbon cables are covering the fan on the right side of the unit 3 Now lower the right end until it falls into place be careful not to scratch the right end cap If you feel any resistance lift the top cover and look for cables which may be blocking it 4 Pull the top cover toward you until it locks securely in place 5 Replace the 11 screws you removed from the rear panel of the K2500 Then tilt the unit back and replace the screws in the holes from which they were removed in the bottom of the unit The 14 bottom screws are self threading so to avoid stripping the threads start the screws by hand before using a screwdriver If a thread does become stripped use an adjacent screw hole Operating System Load Diagnostics Remove all cables from the K2500 except the AC power cord If the K2500 is on press the Power button to turn it off since you will need to restart the K2500 to perform the following steps A Press the Power button to turn the K2500 on then press and release the Exit button while the Please wait message is displayed This brings up the K2500 Boot Loader shown below eee K
14. nstallation procedure for errors 28 Press OK to begin testing A Success message should appear after approximately 45 seconds If Audition the KDFX option 29 Turn the K2500 off and connect an audio system to the A Outputs 30 Make sure that your audio system is turned down to a reasonable listening level then turn the K2500 on 31 Insert the KDEX Installer disk that came with the KDFX Option Kit into the K2500 s floppy drive 32 Press the Disk button and highlight floppy at the Current Disk prompt Press Load 33 Highlight the file named Kdfxtest K25 Press OK twice then Fill 34 Press the Program button 35 Select the program 200 KDFX Test 36 Press the Edit button 37 Play and hold a chord On a rack unit press and hold the CANCEL button on the alphanumeric pad then press one or more of the other alphanumeric buttons to play various notes You should _ hear the organ with FX Continue to hold the chord for the next step 38 Press the Effects button In edit mode this button is FX Bypass After pressing the button you should hear the organ without KDFX processing Toggle the Effects button to switch between FX and no FX 39 When you have confirmed that the KDFX option is working press Exit then the Master button 40 Remove the KDEX Test program by pressing the Delete soft button Use the alpha wheel to select Everything Then press OK Press Yes to confirm the
15. precautions for handling electrostatic sensttive devices when installing the KDEX Expansion ROMS 2 Remove the AC Power Cable from the K2500 3 Check the revision level of the Engine Daughter Board If the Engine Daughter Board is Rev D or earlier install the two KDFX Expansion ROMs into sockets U16 and U17 on the Engine Daughter Board Each ROM must be oriented so that pin one lines up with pin one on its corresponding socket Discard the Flash SIMM Board that was included with the KDFX Option Kit If the Engine Daughter Board is Rev E or later install the two KDFX Expansion ROMs into the sockets on the Flash SIMM Board Each ROM must be oriented so that pin one lines up with pin one on its corresponding socket Then install the Flash SIMM Board into J1 on the Engine Daughter Board Orient pin one on the Flash SIMM Board towards J803 on the Engine Daughter Board VA NOTE The Flash SIMM Board should be aligned so that the center notch lines up with the key in the LVS center of the SIMM connector After the Flash SIMM ts installed make sure each connector finger is aligned with the pads on the Flash SIMM Board If the pads are not aligned remove the SIMM and reinstall 4 tor Keyboard models only check the revision level of the Engine Mother Board to determine if you need to install the DC Power Cable If the Engine Mother Board is revision G or later AND there is a cable connecting J920 shown in Figure 8 on the Engine Mot
16. sed for keyboard units The KDEX Digital I O and KDS Output Boards come from the factory with cables pre connected If the cables become unconnected reconnect them as shown in Figure 1 i aaa Part No 910307 Rev E Sampling Option Board if installed KDS Output Board 31402 pph SOA EAE He S ETTA Si pE ELA M J1008 Digital I O Board Figure 1 Beginning The Installation The installation procedure is divided into four parts Disassembly Installation Reasemiy and Operating System Load Diagnostics Disassembly Disassembly for Rack Units 1 Unplug all external wires cables and connectors from the K2500R and turn the unit so that the front panel faces you I I ee 2 Using a 2 Phillips screwdriver remove the six long M4 screws on the left and right sides of the K2500R towards the front of the unit 2 gta 3 Using a 2 Phillips screwdriver remove the two short M4 screws on the left and right sides of the K2500R towards the rear of the unit Using a 1 Phillips screwdriver remove the two small M3 screws located on the top edge of the rear panel yx WARNING The rear screws on each side of the K2500R are shorter than the other side screws Make sure to q keep these screws separate from the others so that you will use the shorter screws in the back side positions when you reassemble the unit Using the longer screws in these positions could short out some of the components in the K2500
17. t Pd 4 f o 3 i 1e uere s gt touch the instrument while this file ts loading Disrupting this file load may render the instrument useless and require PCB replacement or special programming equipment 15 12 Highlight the file named K25SB KBB where is the version number Press OK then OK again to confirm After the new Boot Loader is installed you will be returned to the Boot Installer menu 13 Power cycle the unit then press and release the Exit button while the Please wait message is displayed 14 Verify that the Boot Loader version matches the version you just installed Install the Operating System and Objects 15 Insert the Operating System disk that came with the KDFX Option Kit into the K2500 s floppy drive 16 Choose Install System from the Boot Loader menu 17 Highlight floppy at the Device to install from prompt Press OK 18 Highlight the file named K25V KOS where is the version number Press OK then OK again to confirm When the operating system has loaded you will be returned to the Boot Loader menu Remove the Operating System disk 19 Insert the Base ROM Objects disk that came with the KDFX Option Kit into the K2500 s floppy drive then choose Install Objects from the Boot Loader menu 20 Highlight floppy at the Device to install from prompt Press OK 21 Highlight the file named OBJKB K25 where
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