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CUP2

Service Manual

©2011 All  rights  reserved. Kurzweil® is a product  line  of  Young  Chang  Co.,  Ltd. Young  Chang®,  V.A.S.T.®,  LaserVerb®,
KDFX™, Pitcher™, PC3™,  PC3K™, PC3LE™, X-Pro™, KSP8™, K2661™, K2600™, K2500™, and K2000™ are trademarks of
Young  Chang  Co.,  Ltd.  All  other trademarks and  copyrights are  property of  their respective  companies. Product  features
and specifications are subject to change without notice.

910527-001 – May 2011

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Содержание CUP2

Страница 1: ...Chang V A S T LaserVerb KDFX Pitcher PC3 PC3K PC3LE X Pro KSP8 K2661 K2600 K2500 and K2000 are trademarks of Young Chang Co Ltd All other trademarks and copyrights are property of their respective com...

Страница 2: ...tions or as marked on the product 10 This product may be equipped with a polarized line plug one blade wider than the other This is a safety feature If you are unable to insert the plug into the outle...

Страница 3: ...ories speci ed by the manufacturer 12 Use only with a cart stand tripod bracket or table speci ed by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart ap...

Страница 4: ...c Systems 19060 S Dominguez Hills Drive Rancho Dominguez California 90220 USA telephone 310 637 2000 fax 310 637 2025 http www kurzweilmusicsystems com International Contact Kurzweil Co LTD iPark Buil...

Страница 5: ...hesis ASIC 2 3 D to A converter 2 4 USB Controller 2 4 MIDI 5 pin Interface 2 4 Voltage Regulators 2 4 Interface PCB 2 5 Function Summary 2 5 ScanPort interface to control panel LED indicators and dis...

Страница 6: ...Diagnostic Tests 3 1 Entering Diagnostics 3 1 Display and Control Panel Buttons 3 2 Test Results 3 2 Diagnostic Test Modes 3 2 Run Once 3 2 Loop 3 2 Continuous 3 2 Description of Tests 3 3 SDRAM Refr...

Страница 7: ...Removing the Control Panel Board 4 13 Replacing the Control Panel Board 4 14 Keyboard Assembly 4 15 Removing the Keyboard Assembly 4 15 Inside the back panel 4 15 Outside the cabinet 4 16 Replacing th...

Страница 8: ...1 Audio Board 6 2 Control Panel Board 6 2 Interface Board 6 2 Miscellaneous 6 2 Cabinet Parts 6 3 Chapter 7 Schematics RP2A Engine Board SH7203 CPU Memory and Debug UART Header 1 of 5 7 3 RP2A Engine...

Страница 9: ...eci c instructions and indicates differences between models Caution Instructs you to proceed cautiously so that damage does not occur to the unit or individual components Warning Alerts you so that da...

Страница 10: ...ice then press the Split button and select the second voice Use the Next or Previous button to select the second voice or press and hold the Split button then press and release the voice s assigned ke...

Страница 11: ...Layer or Split button to move to the next available parameter then press the Next or Previous button to change the selected parameter Function Mode parameters Transpose Effect level Touch Sensitivity...

Страница 12: ...ect the CUP2 to audio equipment Audio In Two RCA jacks to connect the CUP2 s internal speakers to an external device such as an MP3 player or CD player The volume for the external device is not contro...

Страница 13: ...em power supply audio power ampli ers and crossover for the CUP2 s four speakers The Control Panel PCB contains the LED display and buttons to control functions of the instrument Engine PCB Function S...

Страница 14: ...ad into RAM U2 and run Otherwise a more limited function boot loader program also in the Boot Flash U4 is run Normally the latter should only happen at the factory before installing the OS for the rst...

Страница 15: ...This is accomplished through a simple Kurzweil standardized interface called ScanPort J7 page 3 zone D1 Most of the circuits for scanning are actually on the Interface PCB only a couple of buffers U6...

Страница 16: ...5 pin MIDI connectors and interface circuits are on the Interface PCB J31 carries standard MIDI signals to and from the CPU Voltage Regulators The Interface PCB brings in the single 15V power voltage...

Страница 17: ...wings Chapter 7 pages 7 8 and 7 9 In the CUP2 the main CPU on the Engine PCB also performs scanning of the keyboard LEDs and controls This is done through the ScanPort connector a simple Kurzweil stan...

Страница 18: ...ignal is low during a keyboard row read cycle Scan rate is approximately 4KHz 250uS MIDI In Out connector interface page 2 zone D5 U14 is the MIDI In current loop receiver A 6N138 is used To be compat...

Страница 19: ...hat the Data cable must be constructed from special USB rated shielded cable for reliable operation in high speed mode Switch Pedal connector and interface page 1 zone A5 J3 is a triple switch pedal i...

Страница 20: ...f common mode rejection The single ended audio signal is then passed to the Audio PCB through J14 Headphone interface page 2 zone B1 The Audio PCB supplies the ampli ed headphone signal through J10 Th...

Страница 21: ...ther Rev B or Rev C for the CUP2 version of the Audio PCB Ref Des Value Rev B C36 0056uF C37 0056uF C38 0056uF C39 01uF C40 0047uF C41 22uF C42 22uF C45 0056uF C46 0056uF C47 0056uF C50 01uF C51 0047u...

Страница 22: ...Ver 1 schematic circuit drawings Chapter 7 pages 7 10 through 7 12 Note that a component value marking of DNS means the component is not present in the CUP2 assembly Power supply recti ers lters and r...

Страница 23: ...ed around it through R115 and R116 However there is some frequency shaping applied to the crossover lters and the power ampli ers themselves to further atten the response 2 way crossover lters page 2...

Страница 24: ...sistors in a number of places A JFET transistor is normally on even with no voltage applied to its gate A negative voltage more than 6V will turn it off Thus low level audio is muted by short circuiti...

Страница 25: ...pressed button switch will pull its row to a low voltage less than 1 5V when its column is driven to a low voltage Volume Control The three volume control signals simply connect to a single 10K potent...

Страница 26: ...Printed Circuit Boards Control Panel PCB 2 14...

Страница 27: ...es entering the boot loader to run the diagnostic tests The boot loader s other available menu options and their procedures can be found in Chapter 5 beginning on page 5 2 1 Press and hold the Play St...

Страница 28: ...f the test the test name and OK for a passed test or ER for a failed test When a test fails additional lines of test results may scroll across the display Use the Record and Play Stop buttons to revie...

Страница 29: ...Engine Board Internal Flash This test veri es the manufacturer ID and the size of the NAND Flash installed The test then writes and reads back one or more blocks not occupied by the le system This tes...

Страница 30: ...ts connections to MARA Audio Output Warning This test produces loud sine and sawtooth waves Before beginning this test turn the volume on your sound system down to minimum During this test the volume...

Страница 31: ...the Diagnostics menu simultaneously press the Favorite 1 Favorite 2 and Favorite 3 buttons Scanner DIAG tests LEDs Simultaneously press the Previous and Next buttons to turn on all LEDs Press both but...

Страница 32: ...ond is for the rear key contact switch Burn in Loop Burn in Loop continuously runs the following sequence of tests SDRAM Refresh MIDI UART Internal Flash MARA Validity MARA Delay RAM MARA Sound ROM Th...

Страница 33: ...at ribbon cables have locking cable clips Be sure to reapply the clips when reconnecting these cables In some cases tape fastens cables to printed circuit boards or the cabinet When disconnecting cab...

Страница 34: ...ion of the cabinet In addition to its function as part of the outer cabinet there are assemblies mounted on the back panel including the Audio Board Engine Board Interface Board and Transformer The do...

Страница 35: ...Never pull the bottom portion of the back panel away from the CUP2 cabinet Flat Plates Retaining Strap Location Retaining Strap Location Figure 4 2 CUP2 back panel retaining strap and plate locations...

Страница 36: ...nterface Board J31 MIDI CPU stranded wire Interface Board Table 4 1 Engine Board cable 2 Disconnect the stranded and shielded cables in the following order J23 J26 J14 J31 and J11 3 The at ribbon cabl...

Страница 37: ...r panel plate and Interface Board to the back panel is accessible when the back panel is in the open position The following two procedures describe disconnecting and removing the Interface Board The r...

Страница 38: ...io Board shielded wire Audio Board J23 Power Switch shielded wire Power Switch J24 Transformer Primary stranded wire Transformer J25 DC Power Out to Engine stranded wire Engine Board Table 4 2 Interfa...

Страница 39: ...ures the CC Pedal jack 5 Remove the Interface Board and set the rear panel safely aside Replacing the Interface Board If you are replacing the Interface Board with a new board or have removed the rear...

Страница 40: ...g tie wraps apply new tie wraps If a ground strap was disconnected be sure to reconnect it Removing the Audio Board The Audio Board is mounted on a plate secured to the back panel When you remove the...

Страница 41: ...et J515 Rt Tweet J505 Rt Woofer J503 Lt Woofer Audio Board J509 J507 Figure 4 6 Audio Board connector locations Replacing the Audio Board 1 Place the Audio Board on to the mounting plate and install t...

Страница 42: ...the speaker cable from the tweeter terminals Be sure to note the location of each wire to avoid reversing them when you reconnect them 2 Remove the four screws that secure the tweeter mounting bracket...

Страница 43: ...its opening in the CUP2 cabinet and disconnect the cables connected to the woofer terminals Be sure to note the location of each wire to avoid reversing them when you reconnect them 5 Remove the woofe...

Страница 44: ...ore than a couple of inches there is a cable connected to the Control Panel Board 2 Lower the Control Assembly and disconnect the at ribbon cable from the Control Panel Board 3 Place the Control Assem...

Страница 45: ...down on your work surface 4 Remove the ve screws two recessed from the bottom of the Control Assembly 5 Remove the knob from the volume control potentiometer 6 Refer to Figure 4 9 Insert a small at to...

Страница 46: ...gure 4 10 Control Panel Board hardware locations Replacing the Control Panel Board 1 Position the Control Panel Board on the top portion of the Control Assembly Verify that the switch buttons are corr...

Страница 47: ...instructions to open the back panel If you have not done so follow the procedure on pages 4 2 to open the back panel 1 Remove the locking cable clips and disconnect the at ribbon cables from J4 Trebl...

Страница 48: ...ard Assembly be mindful of the left and right cheekblocks and other cabinet components Be sure the at ribbon cables do not catch on cabinet parts or assemblies Replacing the Keyboard Assembly Outside...

Страница 49: ...and Key Contact Boards Natural White Key Strikes the front and rear key contact on key depression Hooks under the front of the keyboard chassis Pivot location Key Spring location Figure 4 12 Natural...

Страница 50: ...ring the key to the keyboard chassis To do this insert a small at screwdriver at the bottom of the pivot and press toward the front edge of the keyboard While doing so lift the back end of the key 3 R...

Страница 51: ...d 2 Place the keyboard upside down on a at soft surface Be sure that the keys are resting on a soft surface to avoid scratching or other damage The stiffening brackets and Treble and Bass Contact Boar...

Страница 52: ...over to its normal playing position 2 Tilt the keyboard up front of the keys facing down and connect the at ribbon cables that connect the Treble and Bass Contact Boards to the Interface Board Be sur...

Страница 53: ...their respective mounting holes on the keyboard contact board 3 Using a small blunt end tool Q Tip toothpick etc gently push the mounting pegs through the holes Do not use too much force or use a too...

Страница 54: ...Disassembly Assembly Keyboard Assembly 4 22...

Страница 55: ...es that travel throughout the cabinet use tie wraps and cable mounts to secure and bundle them Unless the service you are performing requires it do not cut the tie wraps Should you need to do so be su...

Страница 56: ...sts and the procedure to execute the diagnostic tests refer to Chapter 3 Diagnostics Update Software Select this to install new system software and objects Resets Hard Reset There are two ways to perf...

Страница 57: ...the CUP2 USB device window is present This should appear on the desktop as an icon or window 6 Press the Play button The LED display will show Update software 7 Press the Next button The display will...

Страница 58: ...io Problems No Audio 1 Run the Scanner DIAG tests to check the volume control operation 2 If a volume pedal is plugged in make sure it is not set to minimum Or power off unplug the volume pedal them p...

Страница 59: ...ors on the Engine Board through the Interface Board 8 Find and replace bad component s or order a board replacement Keyboard Problems Dead Keyboard 1 Run the Scanner DIAG tests If the tests pass the p...

Страница 60: ...r wearing Clean dirty contacts with denatured alcohol Replace a damaged or worn keyboard contact strip 3 Install keyboard contact strip 4 If section is still dead remove strip and check contact board...

Страница 61: ...n J17 Audio I O MIDI J3 Pedals J16 Phones J11 J10 USB Cntl USB Data J13 Audio In J14 Slider to Audio J8 J15 Xfmr Primary J501 J502 J508 Phones J509 Audio I O J507 Slider In J504 Left Tweet J515 Rt Twe...

Страница 62: ...Troubleshooting Maintenance Interconnect Diagram 5 8...

Страница 63: ...face Board WIZ040003 Audio Board WIZ040004 Control Panel Board Keyboard Assembly Part No Description Key Contact Strip 12 positions Key Contact Strip 13 positions Key Sharp Key Natural A Key Natural B...

Страница 64: ...trix Yellow 7X5 2MM DOT 2 D13 D15 N063002504 LED Red Hi Eff Diffused LTL 4221N 1 D14 515615 003 Potentiometer Volume 10K Lin RA 1 VR1 WIZ050016 Button Blank 12 For SW1 SW12 WIZ050017 Knob Volume 1 For...

Страница 65: ...and Speaker Box Grille and Speaker Box Side Panel Left Figure 6 1 Cabinet Front See Table 1 Parts List Cabinet Parts Table 1 Part No Description WIZ020003 Grille WIZ020014 Top Board WIZ020015 Side Arm...

Страница 66: ...gure 6 3 Pedal Assembly and Pedal Box Assembly See Table 2 Parts List Cabinet Parts Table 2 Part No Description WIZ020049 Fall Board Front Panel WIZ020051 Fall Board Rear Panel WIZ020061 Pedal Box Ass...

Страница 67: ...5 Control Assembly See Table 3 Parts List Cabinet Parts Table 3 Part No Description WIZ050021 Control Assembly Enclosure Top WIZ050022 Control Assembly Enclosure Front Cover WIZ050023 Control Assembl...

Страница 68: ...Replacement Parts 6 6...

Страница 69: ...tputs USB I F 4 of 5 page 7 6 RP2A Engine Board Power Circuitry Test Headers Reset 5 of 5 page 7 7 Compact Upright Interface Board 1 of 2 page 7 8 Compact Upright Interface Board 2 of 2 page 7 9 Audio...

Страница 70: ...Schematics 7 2...

Страница 71: ...7 19 21 23 25 27 29 31 33 35 37 39 RN5 10K RN5 10K 1 2 3 4 8 7 6 5 U4 S29AL004D U4 S29AL004D 17 48 1 2 3 4 5 6 7 8 18 19 20 21 22 23 24 25 37 45 43 41 39 36 34 32 30 44 42 40 38 35 33 31 29 47 15 46 2...

Страница 72: ..._7 B6 DDR_D_8 A3 DDR_D_9 A2 DDR_D_10 B3 DDR_D_11 A1 DDR_D_12 B2 DDR_D_13 B1 DDR_D_14 C2 DDR_D_15 C1 VCC33 AA3 VCC33 AA4 VCC33 AB3 VCC33 AB4 VCC33 AC3 VCC33 AC9 VCC33 AC10 VCC33 AC14 VCC33 AC15 VCC33 A...

Страница 73: ...8 7 6 5 C109 0 1uF C109 0 1uF J9 HEADER2 DNS J9 HEADER2 DNS 1 2 J10 HEADER 7X2 J10 HEADER 7X2 2 4 6 8 10 12 14 1 3 5 7 9 11 13 R39 22 R39 22 RN30 10K RN30 10K 1 2 3 4 8 7 6 5 R47 10K R47 10K R38 10 0K...

Страница 74: ...00 C168 470pF C168 470pF L10 FBEAD_SMT L10 FBEAD_SMT L9 600 OHM 100MHz L9 600 OHM 100MHz C167 470pF C167 470pF U16 MC78L05 U16 MC78L05 C129 0 1uF C129 0 1uF C165 470pF C165 470pF R97 100 R97 100 R52 1...

Страница 75: ...143 220uF TP5 HEADER_POST TP5 HEADER_POST TP17 PTH TP17 PTH U27E 74VHC05 U27E 74VHC05 R70 0 R70 0 J30 HEADER 2 J30 HEADER 2 C145 22uF C145 22uF R79 2 0K R79 2 0K TP2 HEADER_POST TP2 HEADER_POST TP13 P...

Страница 76: ...1 1 2 3 4 8 7 6 5 1 2 3 4 8 7 6 5 5 3 7 6 5 7 8 4 D0 3 D1 4 D2 7 D3 8 D4 13 D5 14 D6 17 D7 18 SPD2 SPD3 SPD4 SPD5 SPD6 SPD7 SPD1 SPD0 SPD2 SPD1 SPD0 RPDL CPDL LPDL VOL KBR0 KBR1 KBR2 KBR3 KBR4 KBR5 KB...

Страница 77: ...S05 U15C 74LS05 R42 1 0K R42 1 0K C20 1000pF C20 1000pF L3 DLW21HN900SQ2 L3 DLW21HN900SQ2 C47 270pF C47 270pF R62 510 R62 510 U15B 74LS05 U15B 74LS05 J15 HEADER 8 J15 HEADER 8 F2 5mm F2 5mm C22 1000pF...

Страница 78: ...1 2 3 4 C8 0 1uF 1 2 C83 DNS 1 2 C23 1000pf X7R 50V 1 2 C22 1000pf X7R 50V 1 2 C25 1000pf X7R 50V 1 2 C24 1000pf X7R 50V 1 2 C27 1000pf X7R 50V 1 2 C26 1000pf X7R 50V 1 2 C29 1000pf X7R 50V 1 2 C28 1...

Страница 79: ...C2331 Y B C E R49 4 02k 1 1 8W MF 1 2 R51 56 2k 1 1 8W MF 1 2 R48 16 9K 1 1 8W MF 1 2 R127 DNS 1 2 R125 DNS 1 2 R126 DNS 1 2 R124 DNS 1 2 R35 523 1 8W 1 1 2 R36 DNS 1 2 R37 DNS 1 2 R41 681 1 1 8W 1 2...

Страница 80: ...BLO 2 1 F11 3 0A FAST BLO 2 1 F12 DNS 2 1 F8 DNS 2 1 F7 3 0A FAST BLO 2 1 LR2 JUMPER WIRE 1 2 LR1 JUMPER WIRE 1 2 R122 4 7 5 1 2W 1 2 R121 4 7 5 1 2W 1 2 R85 47k 5 1 4W 1 2 R79 10k 5 1 4W 1 2 R93 DNS...

Страница 81: ...RIX Q4 MMBT2907 Q4 MMBT2907 RN3 3 3K RN3 3 3K D11 APTD3216SURCK D11 APTD3216SURCK Q11 MMBT2907 Q11 MMBT2907 D5 APTD3216SURCK D5 APTD3216SURCK SW9 SPST SW9 SPST SW4 SPST SW4 SPST U1 74HCT164 U1 74HCT16...

Страница 82: ...Schematics 7 14...

Страница 83: ...1 1 1 2 1 4 4 12 4 13 description 4 12 features 1 1 removing 4 12 replacing 4 12 Control Panel Board diagram 4 13 4 14 function description 2 12 removing 4 13 replacing 4 14 Control Panel Board Probl...

Страница 84: ...ubleshooting 5 5 5 6 Keys diagram natural keys 4 17 diagram sharp keys 4 17 removing 4 18 replacing 4 18 4 19 Kurzweil Contacts v M MARA Delay RAM diagnostic test 3 4 MARA Sound ROM diagnostic test 3...

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