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Kurzweil CUP2 Service Manual
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Kurzweil CUP2 Service Manual

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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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  • Page 1 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.
  • Page 2 The lightning flash with the arrowhead symbol, within an equilateral triangle is intended to alert CAUTION the user to the presence of uninsulated "dangerous voltage" within the product's RISK OF ELECTRIC SHOCK enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, The exclamation point within an equilateral...
  • Page 3 Important Safety Instructions 1) Read these instructions. 2) Keep these instructions. 3) Heed all warnings. 4) Follow all instructions. 5) Do not use this apparatus near water. 6) Clean only with dry cloth. 7) Do not block any of the ventilation openings. Install in accordance with the manufacturer’’s instructions. 8) Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including ampliers) that produce heat.
  • Page 4 Kurzweil Contacts Contact the Kurzweil ofce listed below to locate your local Kurzweil representative. US Contact Kurzweil Music 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.

  • Page 5: Table Of Contents

    Table of Contents Kurzweil Contacts ................................Chapter 1, Introduction Notes, Cautions, Warnings ........................... Control Assembly Features ............................Control Panel Buttons ............................Single Buttons ................................. Buttons Pairs ................................Control Assembly Display ............................ Additional Control Assembly Features ......................Rear Panel Features ...............................
  • Page 6 CUP2 Service Manual Table of Contents Audio PCB ..................................Function Summary .............................. 2-10 Power supply rectiers, lters, and regulators ....................2-10 Mixer ..................................2-11 Headphone amplier ............................2-11 Frequency response shaping ..........................2-11 2-way crossover lters ............................2-11 Power ampliers ..............................
  • Page 7 CUP2 Service Manual Table of Contents Opening the Back Panel ............................Closing the Back Panel ............................Cabinet Electronics ................................ Removing the Engine Board ..........................Replacing the Engine Board ..........................The Interface Board ..............................Disconnecting the Interface Board ........................Removing the Interface Board ..........................

  • Page 8: Rp2A Engine Board–-Sh7203 Cpu, Memory, And Debug Uart Header (1 Of 5)

    CUP2 Service Manual Table of Contents Chapter 5, Troubleshooting & Maintenance Introduction ................................... Cables, Connectors ..............................Surface-Mount Devices ............................Required Tools and Materials ..........................Boot Loader ..................................Entering the Boot Loader ............................Resets ....................................Hard Reset ................................Software Updates ................................

  • Page 9: Chapter 1, Introduction

    Control Assembly——To access the control panel buttons and view the LED display, push the front edge of the assembly. The control assembly will slide out; push again to slide the control assembly in when not in use. Power Switch——The CUP2‘‘s power switch is located under the right end of the keyboard. 1- 1...

  • Page 10: Control Assembly Features

    88 available voices. Each voice is assigned to a key on the keyboard (A0––C8). To directly access a voice, press and hold the Voice button then press and release its assigned key. For a complete list of the 88 available voices and their corresponding keys, consult the CUP2 User’’s Manual.

  • Page 11: Buttons Pairs

    (A0––B4). To directly access a demo song, press the Record button then press and release its assigned key. For a complete list of the 51 available demo songs and their corresponding keys, consult the CUP2 User’’s Manual. Jump Buttons——Simultaneously press the Next and Previous buttons to jump forward or return to the default setting.

  • Page 12: Additional Control Assembly Features

    Rear Panel Features Figure 1-4 CUP2 rear panel MIDI In, Thru, and Out ports——Use these ports to connect the CUP2 to other MIDI devices to receive, pass, and send MIDI data. Audio Out——Two RCA jacks to connect the CUP2 to audio equipment.

  • Page 13: Function Overview

    Chapter 2 CUP2 Printed Circuit Boards Function Overview The CUP2 contains four printed circuit boards (PCB); the Engine, the Interface, the Audio, and the ControlPanel. To greatly generalize: The Engine PCB contains everything concerning sample playback, audio effects, and the functions of the CUP2 operating system.

  • Page 14: General

    The following paragraphs give a brief summary of these major functions and associated functional blocks. Boot Sequence The CUP2 uses a modern tiered memory architecture and boots much like a desktop computer. The sequence is essentially: 1. The Interface PCB, which contains the power supply, produces a signal (PWRUPRST_L) that goes high when the main DC power (+5V) has been stable for approximately 0.5...

  • Page 15: Memory

    •• Digital audio formatting circuits The instrument sound samples are stored in Sound ROM (page 4, zone 5D). The standard CUP2 has 64MB (only U13 installed) of Sound ROM. Other products using the same Engine PCB may have additional Sound ROM installed at U14.

  • Page 16: D-To-A Converter

    The CPU has an integrated USB controller that can be either Master or a Slave but not at the same time. Switching circuits (page 4, zone B1) switch between the two functions. In the CUP2, the actual USB connector is on the Interface PCB and connects to the Engine PCB by two cables.

  • Page 17: Interface Pcb

    The following function summary descriptions reference the CUP2 Interface PCB, Rev C Ver 1, schematic circuit drawings (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 standardized, CPU independent interface for scanning.

  • Page 18: Scanport Interface To Control Panel Buttons

    Printed Circuit Boards Interface PCB ScanPort interface to control panel buttons (page 1, zone C4) The buttons are in a 6 column 2 row interface. The columns are shared with the LEDS. The status of the rows is driven back to the ScanPort by buffer U4. A pressed button will send back a zero for its row position when its column select line is low.

  • Page 19: Reset Circuit

    ScanPort interface to Volume Control potentiometer (page 1, zone C3) Volume in the CUP2 is actually controlled by digital commands from the Engine PCB CPU to the synthesizer ASIC. The volume control potentiometer is interfaced to the CPU (along with the pedal signals) through the ScanPort as an analog signal.

  • Page 20: Scanport Analog Multiplexor

    Printed Circuit Boards Interface PCB ScanPort analog multiplexor (page 1, zone A3) There are eight different sources of analog voltage selected, one at a time, by U10; then passed to the balanced output amplier, U9, which then drives the selected source voltage to the ScanPort.

  • Page 21: Audio Pcb

    CUP2 to match the characteristics of its unique speaker system. Table 2-1 is a list of these components and their values for the CUP2 Rev C Audio PCB. Earlier units were manufactured with a Rev B Audio PCB. There are a few instances where the values differ between Rev B to Rev C.

  • Page 22: Function Summary

    The following function summary descriptions reference the generic Mark 5/10 Audio PCB, Rev D 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.

  • Page 23: Mixer

    C73 and C74 can gently reduce the high frequency response; but they are not needed in the CUP2. The tweeter crossover (U8 and surrounding components) is a 3-pole high-pass lter that passes frequencies above about 3KHz to the tweeter power ampliers.

  • Page 24: Power AmpliErs

    An integrated stereo power amplier (U2, zone 2) drives up to 20 watts to each tweeter from the tweeter crossover outputs. Low power woofer amplier U3 (zone 4) is not present in the CUP2. High power woofer amplier, U4, (zones 6 and 7) drives up to 50 watts to each woofer from the woofer crossover outputs.

  • Page 25: General

    Printed Circuit Boards Control Panel PCB General The Control Panel PCB connects to the Interface PCB via a single 26 wire at cable. This carries row and column signals to the switches and LEDs. It also carries the three volume control signals and headphone audio signals.
  • Page 26 Printed Circuit Boards Control Panel PCB 2- 14...

  • Page 27: Chapter 3, Diagnostics

    Chapter 5 beginning on page 5-2. 1. Press and hold the Play/Stop button and apply power to the unit. When CUP2 boot loader and its version number scroll across the display, release the Play/Stop button.

  • Page 28: Display And Control Panel Buttons

    Diagnostics Entering Diagnostics Display and Control Panel Buttons In the Diagnostics menu, the display shows the currently selected test, test modes, actions, and test results. Press the Record and Play/Stop buttons to navigate through the available tests. To select a test, Once press the Next button.

  • Page 29: Description Of Tests

    Note: Throughout this manual many references are made to the MARA IC. For service personnel unfamiliar with the CUP2, MARA is the name given to the Kurzweil Custom Sound This test veries the proper content of certain read-only registers and the read/write accuracy of certain read/write registers on MARA.

  • Page 30: Mara Delay Ram

    During this test, the volume control on the CUP2 is disabled. This is not a test that fails. It is an interactive test for the entire audio chain. However for this test to pass reliably, the MARA Validity, MARA Delay RAM, and MARA Sound ROM tests should pass.

  • Page 31: Scanner Diag

    Diagnostics Description of Tests Note: The Output parameter controls how the audio will play through the Audio Outputs (left, right, or both). Audio always plays from the Headphones output despite how the Output parameter is set. After adjusting a parameter, press the Previous button to return to the menu of parameters. From the menu of parameters, press the Previous button to stop playing the waveform and return to the Audio Output menu.

  • Page 32: Burn-In Loop

    Diagnostics Description of Tests Keyboard——To test the keyboard, press and hold any key. The key number (front contact), test name ( ), and key number (rear contact) are shown in the LED display. The rst key number is the test result for the front key contact switch and the second is for the rear key contact switch.

  • Page 33: Chapter 4, Disassembly/Assembly

    Disassembly/Assembly Introduction This chapter contains the procedures and illustrations for the disassembly and reassembly of the CUP2. There are four main sections: Opening the CUP2, Cabinet Electronics (including printed circuit boards, assemblies, and audio components), Control Assembly, and Keyboard Assembly.

  • Page 34: Opening The Cup2

    Opening the CUP2 Opening the CUP2 To access the printed circuit boards and other assemblies included in the CUP2, it is necessary to open the back panel. When you remove the hardware, the top portion of the back panel tilts outward approximately 45º.

  • Page 35: Closing The Back Panel

    1. Tilt the top edge of the back panel toward the cabinet. Be sure the cables and retaining straps are properly positioned in the cabinet. 2. Install the four corner screws rst, then the remaining 13 screws that secure the CUP2 back panel to the cabinet.

  • Page 36: Cabinet Electronics

    Cabinet Electronics Removing the Engine Board The Engine Board is mounted on six support brackets secured to the CUP2 back panel. When you remove the Engine Board, it is not necessary to remove the support brackets. 1. Following Steps 2 and 3, disconnect the cables listed in Table 4-1.

  • Page 37: Replacing The Engine Board

    The Interface Board The Interface Board is mounted on the rear panel plate secured to the CUP2 back panel. When installed, the Interface Board sits perpendicular to the back panel. The hardware that secures the rear panel plate and Interface Board to the back panel is accessible when the back panel is in the open position.
  • Page 38 Disassembly/Assembly Cabinet Electronics Ref. Name Cable Type Destination ScanPort at ribbon Engine Board Pedals stranded wire Pedal Assembly Keyboard Treble at ribbon Keyboard Assembly Keyboard Bass at ribbon Keyboard Assembly Control Panel at ribbon Control Panel Board MIDI stranded wire Engine Board USB Control stranded wire...

  • Page 39: Removing The Interface Board

    Note: If you are replacing the Interface Board with a new board or the repair requires separating the Interface Board from the rear panel, follow Steps 3 and 4. Figure 4-5 CUP2 rear panel 3. Remove the ve screws that secure the Interface Board jacks and AC socket to the rear panel.

  • Page 40: Connecting The Interface Board

    Disassembly/Assembly Cabinet Electronics Connecting the Interface Board 1. Refer to Table 4-2. 2. Connect the shielded wire cables in the following order: J15, J14, J13, J17, J11, and J23. 3. Connect the stranded wire cables in the following order: J25, J8, J3, J16, J10, and J24. Caution: Be sure to connect the cable to J24 according to the appropriate line voltage.

  • Page 41: Replacing The Audio Board

    Disassembly/Assembly Cabinet Electronics 2. Disconnect the speaker cables from: J505, J503, J504, and J515. 3. Disconnect the remaining cables in the following order: J501, J502, J509, J508, and J507. 4. Remove the ve screws that secure the Audio Board to the mounting plate. 5.

  • Page 42: Removing The Transformer

    Disassembly/Assembly Cabinet Electronics Removing the Transformer 1. Disconnect the stranded wire cables from J501 on the Audio Board and from J24 on the Interface Board. 2. Remove the four nuts that secure the transformer to the back panel. 3. Remove the transformer. Replacing the Transformer 1.

  • Page 43: Removing A Woofer

    3. Remove the four screws that secure the woofer to the cabinet. 4. Lift the woofer a couple of inches out from 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.

  • Page 44: Control Assembly

    Disassembly/Assembly Control Assembly Control Assembly Removing the Control Assembly The Control Assembly includes a bracket that attaches the assembly to the cabinet, the Control Panel Board, and the control panel enclosure that slides in and out like a drawer. Figure 4-8 Control Assembly hardware 1.

  • Page 45: Removing The Control Panel Board

    Disassembly/Assembly Control Assembly Removing the Control Panel Board 1. Follow the procedure to remove the Control Assembly. Note: To avoid damaging the LED display or Control Panel Board buttons, and scratching the panel, be sure to have your work surface prepared. 2.

  • Page 46: Replacing The Control Panel Board

    Disassembly/Assembly Control Assembly Note: The Control Assembly uses a constant force spring that enables it to slide in and out with just a touch. Refer to Figure 4-9. To gain access to the spring, remove the four screws (2 screws per side) that secure the trim to the assembly. Slide the Control Assembly out and remove the screw securing the spring.

  • Page 47: Keyboard Assembly

    Disassembly/Assembly Keyboard Assembly Keyboard Assembly The procedure to remove the Keyboard Assembly is in two sections. Removing the Keyboard Assembly requires disconnecting cables and removing hardware from the interior and exterior of the cabinet. After following these procedures, the Keyboard Assembly will be removed through the front portion of the cabinet.

  • Page 48: Outside The Cabinet

    Disassembly/Assembly Keyboard Assembly 3. Remove the three screws securing the Keyboard Assembly to the cabinet. 4. Close the back panel and install two screws to hold it safely in place during the remainder of this procedure. Outside the cabinet Caution: To avoid the back panel opening on its own should the unit be jarred as you remove the Keyboard Assembly, be sure you have installed two screws to safely hold the back panel in place.

  • Page 49: Removing Keys

    Disassembly/Assembly Keyboard Assembly Removing Keys 1. Follow the procedure to remove the Keyboard Assembly. 2. The following diagrams show the outlines of the natural and sharp keys and illustrate how their design interacts with the keyboard chassis and Key Contact Boards. Natural/White Key Pivot location...

  • Page 50: Removing Natural/White Keys

    Disassembly/Assembly Keyboard Assembly Removing Natural/White Keys 1. Unlock the key from the pivot anchoring the key to the keyboard chassis. To do this, insert a small at screwdriver at the back end of the pivot and press toward the front edge of the keyboard.

  • Page 51: Replacing A Natural/White Key

    Disassembly/Assembly Keyboard Assembly Replacing a Natural/White Key 1. Verify the placement of the key spring. 2. Hook the front end of the key under the keyboard chassis. 3. Lower the key into position. Align the pivot with the hole at the rear of the key. 4.

  • Page 52: Removing The Bass Contact Board

    Disassembly/Assembly Keyboard Assembly Removing the Bass Contact Board 1. Disconnect the small ribbon cable that connects the Bass and Treble Contact Boards. 2. Remove the screws that secure the four stiffening brackets (three screws per bracket) to the Bass Contact Board and remove the brackets. 3.

  • Page 53: Replacing The Keyboard Contact Strips

    Disassembly/Assembly Keyboard Assembly Replacing the Keyboard Contact Strips 1. Position the contact strip on the keyboard contact board that you are servicing. Note: Be sure that the deeper indentation is positioned toward the rear of the key. 2. Line up the contact strip mounting pegs with their respective mounting holes on the keyboard contact board.
  • Page 54 Disassembly/Assembly Keyboard Assembly 4- 22...

  • Page 55: Chapter 5, Troubleshooting & Maintenance

    Chapter 5 Troubleshooting & Maintenance Introduction Cables, Connectors Most of the cables with connectors are keyed, and therefore cannot be reversed. If a cable’’s connector is not keyed, the disassembly instructions will caution you. Some at ribbon cables have locking cable clips. Be sure to reapply the clips when reconnecting cables. In some cases, tape fastens cables to printed circuit boards or the cabinet.

  • Page 56: Boot Loader

    Troubleshooting & Maintenance Boot Loader Boot Loader Use the CUP2’’s Boot Loader to enter Diagnostics or perform a hard reset to the unit. You can also install operating system updates and objects into Flash memory. Entering the Boot Loader Press and hold the Play/Stop button and apply power to the unit. When CUP2 boot loader and its version number scroll across the display, release the Play/Stop button.

  • Page 57: Software Updates

    Note: The Operating System and Object les are combined in one le type (.KUF). 2. Press and hold the Play/Stop button and apply power to the unit. When CUP2 boot loader and its version number scroll across the display, release the Play/Stop button.

  • Page 58: Power Problems

    Troubleshooting & Maintenance Power Problems Power Problems Dead: LEDs not lit Before opening the unit, verify the following: 1. The AC outlet is supplying power. 2. The AC cord is good and properly connected to the unit. 3. Check fuses. Follow Steps 4 and 5 to access them. 4.

  • Page 59: Control Panel Problems

    1. Run the Scanner DIAG tests. If the tests pass, the problem is likely the result of a setting change. Perform a hard reset to the unit or refer to the CUP2 User's Manual. 2. Refer to the Interconnect Diagram.

  • Page 60: Keyboard Problems

    Troubleshooting & Maintenance Keyboard Problems Dead Note(s) or no velocity sensitivity One or More in a Section 1. Remove related contact board. 2. Check the keyboard contact strip for dirt, damage or wearing. Clean dirty contacts with denatured alcohol. Replace a damaged or worn keyboard contact strip. 3.

  • Page 61: Interconnect Diagram

    Troubleshooting & Maintenance Interconnect Diagram Interconnect Diagram Left Tweet Left Woofer Audio Board J504 Tweet Left J505 J503 Right Tweet Rt Woofer Lt Woofer Woofer J515 Rt Tweet J501 J508 J502 Phones J507 J509 DC Power Audio I/O Slider In Interface XFMR Board...
  • Page 62 Troubleshooting & Maintenance Interconnect Diagram 5- 8...

  • Page 63: Chapter 6, Replacement Parts

    Chapter 6 Replacement Parts Printed Circuit Boards and Assemblies Part No. Description N215040200 Keyboard Assembly Fatar Wood TP40W WIZ040001 Engine Board WIZ040002 Interface 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...

  • Page 64: Audio Board

    Replacement Parts Audio Board Part No. Description Qty. Reference Designation N043002102 Fuse Slo-Blo 250V 2A 5X20MM F1-F4 N043002103 Fuse Slo-Blo 250V 4A 5X20MM F5, F6 N043003803 Fuse Fast 3A 125V F7, F11 N043003804 Fuse Fast 4A 125V F9, F10 Control Panel Board Part No.

  • Page 65: Cabinet Parts

    Replacement Parts Cabinet Parts Top Board Side Panel Left Front Top Fall Board Panel Assembly (see Figure 6.2) Side Arm Keyboard Left Crossbar Side Arm Right Cheek Block Left Cheek Block Right Control Assembly Keyslip (see Figure 6.5) Side Panel Right Leg Left Grille and...
  • Page 66 Replacement Parts Fall Board Rear Panel Dust Cover Front Fall Board Front Panel Figure 6-2 Fall Board Assembly (See Table 2 Parts List) Pedal Assembly Pedal Box Assembly Figure 6-3 Pedal Assembly and Pedal Box Assembly (See Table 2 Parts List) Cabinet Parts, Table 2 Part No.
  • Page 67 Replacement Parts Top Rear Panel I/O Panel Bottom Rear Panel Figure 6-4 CUP2 Rear Cabinet (See Table 2 Parts List) Rear Bottom Bracket Front Figure 6-5 Control Assembly (See Table 3 Parts List) Cabinet Parts, Table 3 Part No. Description...
  • Page 68 Replacement Parts 6- 6...
  • Page 69 Chapter 7 Schematics Description Page No. RP2A Engine Board––SH7203 CPU, Memory, and Debug UART Header (1 of 5) page 7-3 RP2A Engine Board––MARA (2 of 5) page 7-4 RP2A Engine Board––MARA Clock, Delay Memory, Scan Port, CPLD (3 of 5) page 7-5 RP2A Engine Board––Sound ROM, LCD INTF, Audio Outputs, USB I/F (4 of 5) page 7-6...
  • Page 70 Schematics 7- 2...
  • Page 71 CUP2 Service Manual VCC33 VCC12 CPU_A_[22:0] CPU_A_[22:0] sh.2,3,4,5 PB7_IN PB6_IN CPU_D_[31:0] CPU_IRQ_1_L CPU_D_[31:0] sh.2,3,4,5 CPU_IRQ_0_L 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF SDRAM BYPASS CAPS...
  • Page 72 CUP2 Service Manual MARA 1 DECOUPLING CAPS VCC33 VCC33 VCC25 VCC25 VCC25 VCC18 VCC18 VCC18 600 OHM @ 100MHz 600 OHM @ 100MHz 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF...
  • Page 73 CUP2 Service Manual SCAN PORT INTERFACE VCC33 VCC33 VCC33 VCC33 RN23 RN23 RN24 RN24 600 OHM @ 100MHz 600 OHM @ 100MHz VCC33_ISO_U14 C102 C102 VCC33 600 OHM @ 100MHz 600 OHM @ 100MHz C103 C103 0.1uF 0.1uF sh.1,2,4,5 CPU_D_[7:0] 0.1uF...
  • Page 74 CUP2 Service Manual VCC33 sh.2 ROM_A_[24:0] LINE_LEFT_P DSDL4 LOUT1+ VCC33 VCC33 LINE_LEFT_M DSDR4 LOUT1- DSDL3 Line/Phones L+ LINE_RIGHT_P DSDR3 ROUT1+ Line/Phones L - LINE_RIGHT_M DSDL2 ROUT1- AGND C121 C121 C124 C124 C122 C122 C123 C123 DSDR2 Line/Phones R+ ROM BASE-0...
  • Page 75 CUP2 Service Manual C143 C143 VCC33 220uF 220uF HEADER3 HEADER3 C145 C145 FBEAD_SMT FBEAD_SMT C146 C146 2.5 Turn Ferrite Bead HEADER 6 HEADER 6 22uF 22uF 0.1uF 0.1uF VOUT 1206 1206 PWRUPRST_L /PWRUPRST +12V +12V 600 OHM @ 100MHz 600 OHM @ 100MHz...
  • Page 76 CUP2 Service Manual NOMINAL VCC33 VCC33 TREBLE VCC33 5.1V KBR7 +15V LM78L05 LM78L05 +5REF 74HC164 74HC164 KBR6 0.1uF 0.1uF KBR5 KBR4 100uF 100uF KBR3 KBR2 KBR1 0.1uF 0.1uF KBR0 2.7K 2.7K FBEAD_2.5T_SMT FBEAD_2.5T_SMT BR10 MK10 VCC33 0.1uF 0.1uF VCC5 VCC33 VCC5 0.1uF...
  • Page 77 CUP2 Service Manual Usage table for U14, R21, R22, R62 FROWN FROWN OUT/ THRU OUT/ THRU Use only one row VCC5 PC910 5.6K 6N138 VCC5 VCC5 6N139 TRANSFORMER PRIMARY 1000pF 1000pF 1000pF 1000pF LL4148 LL4148 1.6A/240V 115V-A 220 1W 220 1W 3.0A/120V...
  • Page 78 CUP2 Service Manual +36V {3} 36VAC_HI 10000uF,50V .047uF,250V,20% 4A, SLO-BLO, 250V ~36V {3} .047uF,250V,20% 100PIV, 8A R123 36VAC_LO +15V AMPUNMUTE {3} 10000uF,50V 4A, SLO-BLO, 250V + C103 1N5231 10uF,35V,ELEC,20% 39k,1/8W,5% UNMUTE {2,3} 36VRTN {3} PN2907 UNMUTE 22VAC_HI 7815 PN2222 + C1 + C10 4.7K...
  • Page 79 CUP2 Service Manual 0 (Jumper) +15V R116 Components within rectangles layed out in close proximity R117 +15V R109 0.1uF 4.99k,1%,1/8W,MF R105 R110 R114 TL072 .0056uF,POLY,5%,50V .0056uF,POLY,5%,50V TWEET_L {3} ~15V 1.37K,1%,1/8W 300K .0056uF,POLY,5%,50V LEFTEQ_IN ~15V +15V 56.2k,1%,1/8W,MF R107 0.1uF 4.7pF,50V,NPO,5% R103 4.02k,1%,1/8W,MF...
  • Page 80 CUP2 Service Manual 3.0A,FAST-BLO Left Tweeter 75.0K,1%,1/8W .01uF,5%,POLY,50V J504 + C60 47uF,ELEC,20%,50V 49.9K,1%,1/8W J506 3.9k,5%,1/2W 3.9k,5%,1/2W C100 750,1%,1/8W BOOT R119 R120 124.0K,1%,1/8W,MF 4.0A,FAST-BLO C14 0.1uF 1.78k,1%,1/8W C54 DNS 1000pF,50V,X7R 47uF,ELEC,20%,16V 4.75k,1%,1/8W,MF +24 {1} +24 {1} C98 0.1uF JUMPER WIRE C94 DNS 9.31k,1%,1/8W...

  • Page 81: Compact Upright Control Board

    CUP2 Service Manual VCC5 VCC5 C[0:11] 3.3K 3.3K MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 MMBT2907 0.1uF 0.1uF 74HCT164 74HCT164 BC10 BC11 3.3K 3.3K...
  • Page 82 Schematics 7- 14...
  • Page 83 CUP2 Service Manual Index features 1-1 removing 4-12 Assembly instructions, PCBs and Assemblies replacing 4-12 Audio Board 4-9 Control Panel Board Control Assembly 4-12 diagram 4-13, 4-14 Control Panel Board 4-14 function description 2-12 Engine Board 4-5 removing 4-13 Interface Board...
  • Page 84 CUP2 Service Manual Index Engine Board Printed Circuit Board Descriptions cables 4-4 Audio PCB 2-9 diagram 4-4 Control Panel PCB 2-12 function description 2-1 Engine PCB 2-1 removing 4-4 Interface PCB 2-5 replacing 4-5 Power Problems: troubleshooting 5-4 Entering Diagnostic Tests 3-2...
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