Kurzweil Mark Pro 2i Service Manual
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Kurzweil Mark Pro 2i Service Manual

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Mark PRO 2i

Service Manual

2007 All rights reserved. Kurzweil is a product line of Young Chang Co.; Kurzweil is a trademark of Young Chang Co. All other products
and brand names are trademarks or registered trademarks of their respective companies.
Product features and specifications are subject to change without notice.

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Summary of Contents for Kurzweil Mark Pro 2i

  • Page 1: Service Manual

    Mark PRO 2i Service Manual 2007 All rights reserved. Kurzweil is a product line of Young Chang Co.; Kurzweil is a trademark of Young Chang Co. All other products and brand names are trademarks or registered trademarks of their respective companies.

  • Page 2: Radio And Television Interference

    IMPORTANT SAFETY & INSTALLATION INSTRUCTIONS INSTRUCTIONS PERTAINING TO THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS WARNING: When using electric products, basic precautions The power supply cord of the product should be unplugged from should always be followed, including the following: outlet when left unused for a long period of time.

  • Page 3: Mark Pro 2I

    Young Chang Distributors Contact the nearest Young Chang office listed below to locate your local Young Chang/Kurzweil representative YOUNG CHANG Headquarters 9FL, 102-Dong, I’PARK, Jeoungja-Dong, Buandan-Gu, Seongnam-Si, Gyeonggi-Do, Korea 463-859 Tel : 1-82-31-786-7900 Fax : 1-82-31-785-2703 Web : www.yapiano.co.kr YCNA(Young Chang North America) 19060 S Dominguez Hills, Dr Rancho Dominguez, CA 90220, U.S.A...

  • Page 4: Table Of Contents

    IMPORTANT SAFETY & INSTALLATION INSTRUCTIONS ..........2 CONTENTS ............................2 CHAPTER 1 INTRODUCTION ......................4 Introduction to Mark Pro 2i .................................5 Mark Pro 2i Rear Panel .................................5 Rear Panel Features ................................5 Mark Pro 2i Front Panel ................................6 Front Panel Features ................................7 Power On. Off..................................9 CHAPTER 2 MARK PRO 2I ASSEMBLY ................
  • Page 5 Buttons, Knobs or Controllers not working ........................39 Keyboard Problems..................................40 Dead Keyboard ..................................40 CHAPTER 5 PARTS LISTS ......................42 Introduction....................................42 Mark Pro 2i Printed Circuit Boards and Assemblies ....................42 Engine Board ..................................43 Scanner Board ..................................47 Audio Board ...................................48 Front Board ....................................50 Head Phone Board ................................51 CHAPTER 6 SCHEMATICS ......................

  • Page 6: Chapter 1 Introduction

    This chapter provides the service technician with a layout of the front and rear panel features, as well as a brief explanation of their functions. For in-depth descriptions of the many features the Mark PRO 2i instruments include, consult the Musician’s Guide.

  • Page 7: Introduction To Mark Pro 2I

    Audio Connection – Balanced 1/4” left and right audio output jacks to connect to an amplifier, mixer or sound system. MIDI Connection – In, Thru/Out, and Out ports to connect the Mark Pro 2i to other MIDI devices to receive, pass, and send MIDI data.

  • Page 8: Mark Pro 2I Front Panel

    Mark Pro TWOi Mark Pro 2i Front Panel Figure 1-2 Mark PRO 2i Front Left panel Figure 1-3 Mark PRO 2i Front Right panel...

  • Page 9: Front Panel Features

    Mark Pro TWOi Front Panel Features Figure 1-4 Mark PRO 2i Front left section — Volume Knob Use the volume knob located on the far left of the front panel to adjust the volume. Set the volume to the minimum when turning on the instrument and adjust it to the desired level later.
  • Page 10 Mark Pro TWOi Figure 1-5 Mark PRO 2i Front center section — 3 X 7 Segment Three character & Seven segment display. Figure 1-6 Mark PRO 2i Front right section — Use this button to change tonality, using Transpose + / Transpose - Transpose button can be up/down up to 2 octaves.

  • Page 11: Power On. Off

    Mark PRO 2i Power On & Off The Mark Pro 2i is a free volt product which can be used both on 110V and 220V. You can power this digital piano by plugging it into a standard household power outlet. Make sure the power switch on the bottom surface of the keyboard is turned off before you connect the power cord to the electrical outlet.

  • Page 12: Chapter 2 Mark Pro 2I Assembly

    Mark Pro 2i Assembly Introduction This chapter contains all the procedures for the disassembly and reassembly of Mark Pro 2i as well as instruments with factory-installed. There are three main sections: Opening the Mark Pro 2i, Top Enclosure, Mark Pro 2 Keyboard Assembly .

  • Page 13: Installation

    10. Screws for Side Panel and Pedal Box 4. Pedal Box 11. Screws for Rear Panel 5. Rear Panel 12. Screws for keyboard and the stand 6. Support Legs 7. Headphone Hanger Table 2-1 Mark PRO 2i All the parts list Figure 2-1 Mark PRO 2i Parts...

  • Page 14: Assembling The Stand

    Side Panel and Pedal Assembly Figure 2-2 Mark PRO 2i Side panel and Pedal Assembly 1. Place pedal box 4 on the left side panel 2 and fasten the screw 10 on the hole. 2. Put on the right side panel 3 in the same way.
  • Page 15 1. Fit the rear panel 5 into side panel brackets and fasten the screws 8. 2. After fastening all four screws of 8, fasten the screws 11 to lock to the pedal box. Installing the Main set onto the Stand Figure 2-4 Mark PRO 2i Installing the Main set onto the Stand...
  • Page 16 Be sure to install the adjustment screw and perform the adjustment procedure before depressing the pedals. Failure to do so may result in damage to the pedal box. 5. Attach the headphone hanger wherever you wish. Figure 2-5 Mark PRO 2i Headphone hanger...

  • Page 17: Disassembling The Main Set

    Mark Pro TWOi Disassembling the Main set Check the 5 steps below before you start disassembling. 1. Top Cover Disassembly Figure 2-6 Mark PRO 2i Disassemble top cover...
  • Page 18 Mark Pro TWOi 2. Dust Cover Disassembly Figure 2-7 Mark PRO 2i Disassemble Dust cover 3. Grill Disassembly Figure 2-8 Mark PRO 2i Disassemble Grill...
  • Page 19 Mark Pro TWOi 4. Front panel Disassembly Figure 2-9 Mark PRO 2i Disassemble Front panel 5. Keyboard Disassembly Figure 2-10 Mark PRO 2i Disassemble Keyboard...

  • Page 20: Removing The Scanner Board

    Bottom Surface Figure 2-6 Mark PRO 2i Bottom surface The Mark Pro2i has two 1/4” headphone jackes on the surface of the keyboard so that two can listen and play at the same time. The volume for both jacks is controlled identically by the main volume knob located at the far left side on the front panel.
  • Page 21 Note: The cables used throughout the Mark PRO 2i are bundled and routed so that their locations and destinations seem obvious. However, to avoid reversing the Bass and Treble cables when reconnecting, mark one or both cables designating B for Bass and T for Treble.

  • Page 22: Removing The Amp Board

    Right Speaker R-woofer standard wire Right Speaker L-woofer standard wire Light Speaker L-woofer standard wire Light Speaker Mark Pro 2i power standard wire Engine Board Engine I/O standard wire Scanner Board standard wire Scanner Board Audio standard wire Engine Board Table 2-3 Amp Board cables Disconnect the hook-up wire cable on the Amp Board.

  • Page 23: Removing The Front Panel Board

    Mark Pro TWOi Replacing the Amp Board Hold the Amp Board and position it so that the power switch, and the rear panel jacks are correctly positioned through the rear panel portion of the top enclosure. Install the all screws. Connect the ribbon cables in the following order.
  • Page 24 Amp Board MIDI & CPU Standard wire Scanner Board standard wire Mark Pro 2i AUDIO OUT Amp Board Mark Pro 2i USB standard wire Amp Board Table 4-4 Engine Board cables Disconnect the stranded wire cables from J6 to J10.
  • Page 25 Mark Pro TWOi Remove the Engine Board Replacing the Engine Board Place the Engine Board in position on the top enclosure. Align the center screw hole on the front panel edge with the thread marks in the extrusion and install the screw that secures the front panel edge. Connect the stranded wire cable from the Connector Board to on the Engine Board.
  • Page 26 Mark Pro TWOi...

  • Page 27: Chapter 3 Diagnostics

    Mark Pro TWOi Chapter 3 Diagnostics Diagnostic Tests The following lists the diagnostic tests available for the SP2X • • • MARA • Sound ROM • DRAM • Sine • MIDI • NVRAM Warning: Some diagnostic tests erase user programs and setups. If possible, be sure to save all user programs and setups, before entering diagnostics.

  • Page 28: Entering Diagnostics

    Mark Pro TWOi Entering Diagnostics Apply power to the unit. Press Global button one time while three dots blinking in the 7- segment. After a while, segment display the following message. Figure 3-1 7 segment example, entering diagnostics Press either the +/Yes or -/No until .

  • Page 29: Diagnostic Test Modes

    Mark Pro TWOi Diagnostic Test Modes Run One Test Run One Test allows you to select an individual test, or to step through and run each available test. To step through the different tests, the +/Yes or -/No button Press the Transpose + button to select the test.

  • Page 30: Test Results

    Mark Pro TWOi Test Results At the completion of an individual test, the segment displays the test results. An expected. Result is means passed, means failed. Figure 3-5 segment example, Test results Description of Tests This test checks the software data (engine, boot, and setups ) stored in Flash ROM on the Engine Board.

  • Page 31: Sine Wave

    Mark Pro TWOi Delay RAM This test performs a quick read-write of the internal RAM and verifies that the data was successfully written and retained. A failure of this test may indicate a problem with the RAM or the Engine Board. Sine Wave This test generate sine wave from MARA, wave sample located in Sound ROM, and plays through DAC and analog audio output.

  • Page 32: Nvram

    Mark Pro TWOi NVRAM The NVRAM(rM2) test performs part of the SRAM back up by built in lithium coincell battery. Test starts with write test pattern to NVRAM area and after power cycle, read pattern again. A failure of this test could be caused by low battery voltage or problem of battery-back related circuit.

  • Page 33: Chapter 4 Troubleshooting

    Young Chang Distributor. Boot Block Use the Mark Pro 2i’s Boot Loader to enter Diagnostics or perform a Hard Reset to the unit. You can also install operating system updates and ROM objects into Flash ROM.
  • Page 34 Mark Pro TWOi Install Engine — Installs new operating system software upgrades. Update Boot block — Installs boot block updates iagnostics — Enters the diagnostic test menu. For a complete list of tests and the procedure to execute the diagnostic tests. Run Engine —...

  • Page 35: Hard Reset

    Mark Pro TWOi Resets Hard Reset There are two ways to perform a Hard Reset to the Mark PRO 2i. Press the Global button and press the Reset button segment displays following screen and press +/Yes button segment displays an message. Press the +/YES button again segment finally displays to continue.
  • Page 36 MIDI In port on the Mark pro 2i. Open the first .MID file using the sequencer program. Turn on the Mark Pro 2i and follow the procedure to enter the Boot Block. Press the Enter button to select “uOS”...

  • Page 37: Replacing The Battery

    After the file is loaded, the unit will reset. Replacing the Battery The Mark Pro 2i uses a flat three volt Lithium coincell battery. When the battery voltage runs low, the unit boots up with a low battery message. Note: The battery voltage can be checked at anytime using the Scanner Diagnostics.
  • Page 38 Remove top assembly and set it safely aside. Removing the Battery The battery (CR2032) in the Mark Pro 2i is mounted into a holder on the Engine Board and is accessible when the access panel is removed. Insert a flat plastic tool (plastic knife, pen cap, etc.) into one of the openings between the battery and the holder to lift the battery.

  • Page 39: Mark Pro 2I Scanner Test

    The Scanner Tests for the Mark Pro 2i include separate tests for the front panel buttons and LEDs, the keyboard, and the pedals . To enter the Scanner Tests, first turn on the Mark Pro 2i. Once the Mark Pro 2i is on and ready to play, simultaneously hold down the Effect Effect Effect, Transpose + and Transpose - buttons.

  • Page 40: Power Proble Ms

    If a single switch pedal is plugged into the SW jack, operating it should case a response in the display. For Kurzweil pedals , pressing the pedal should cause “S1C” to be displayed while releasing it should cause “S1o” to be displayed. Other vender’s pedals may cause the opposite response.

  • Page 41: Audio Problems

    Mark Pro TWOi • The AC outlet is supplying power. • The power jack is properly connected to the unit. Check the power switch, power jack and AC adapter. Refer to the Interconnect Diagram. Check all related connections. Refer to the Amp Board schematics and check all supply voltages. Audio Problems No Audio Refer to the Interconnect Diagram.

  • Page 42: Keyboard Problems

    Mark Pro TWOi Disconnect and reseat the cables. Check the solder connections at the connectors. Check front panel ribbon cable(s). Refer to the Scanner Board schematics and check U12, IC Scanner 38869, for signal activity. Keyboard Problems Dead Keyboard Check the flat ribbon cables connecting the keyboard Bass and Treble Contact Boards to the Scanner Board, locations J2 and J3.
  • Page 43 Mark Pro TWOi If section is still dead, remove strip and check contact board for shorts, cold solder joints, etc. Find and replace bad component(s) or order replacement board. Mechanical Noise Check keyboard for broken key weights, support brackets, or ripped contacts.

  • Page 44: Chapter 5 Parts Lists

    Parts Lists Introduction The parts lists included in this chapter cover all models of the Mark Pro 2i. Some printed circuit boards and assemblies are used in more than one model. Therefore, the parts lists on the following pages are listed under these headings: The following two tables list the printed circuit boards and assemblies by model.

  • Page 45: Engine Board

    Mark Pro TWOi Engine Board Part Number Part Name Description Q'ty Reference N052901610 CAP ELECT GP 10uF 16V 20% SZB SMT C1,C200,C202,C208 C2~4,C8~11,C12~14,C19,C20,C51,C55,C 56,C60,C62,C65,C67,C68,C71,C73,C129,C N052007825 CAP CER X7R 0.1UF 50V 10% X7R 0603 130,C132~163,C165~168,C170,C172~183 ,C206 N051007810 CAP CER 1000PF 50V 10% X7R 0603 C5,C59,C64,C70,C75,C128 N052007809 CAP CER NPO...
  • Page 46 Mark Pro TWOi HEADER .098"SP N041034005 (22-03-5055) HEADER N041034004 0.098"SP 4P(22- YDP2000N 03-5045) BATTERY N035040201 HOLLDER (BV-32) PC-88 TOSHIBA HEADER .1"SP N041030002 (22-03-2021) SGL ROW 2P IND FE BD 2.5- N055001505 L3,L15 TURN SMT 500mA 600 OHM @ 100MHz N055001509 IND FE BD SMT L13,L14,L16 0805...
  • Page 47 Mark Pro TWOi R36,R37,R38,R39,R42,R43,R44,R45,R48,R RES TF 4.75K OHM 1% 1/16W 0603 49,R50,R51,R52,R57,R58,R59,R60 N051064004 RES TF 47 5% 1/16W 0603 RES TF 18ohm 1% 1/16W 0603 R81,R82 N051064109 RES CF 1.0M 5% 1/16W 0603 R83,R84,R86 RES TF 620ohm 5% 1/16W 0603 R110 RES TF 120ohm 5% 1/16W 0603...
  • Page 48 Mark Pro TWOi N061007144 IC LOGIC 74VHC14 SOP14-150 N061011008 IC LOGIC 74AC08 SOP14-150 IC ASIC MARA FBGA388 IC MASKROM OKI N083071801 SP2, 830178-001 MR27V128000J IC USB FUNCTION GENERAL PURPOSE IC REG ADJ LM1117SX-ADJ TO-263 U55,U56 IC REG 2.5V LP2992IM5-2.5 FIXED XTL 24.576MHZ 18PF SMT 아부라콘(A245K9Y) N059010062...

  • Page 49: Scanner Board

    Mark Pro TWOi Scanner Board Part Number Part Name Description Q'ty Reference N052007402 CAP CER X7R 1000PF X7R 10% 0603 C8,C24,C25,C26 C4,C7,C9,C10,C11,C12,C14,C1 N052007503 CAP CER X7R 0.1UF 50V 10% 0603 N052007033 CAP CER NPO 33pF 50V 5% NPO 0603 C5,C6 N053000802 DIODE SWITCH 1N4148 SMT DL-35...

  • Page 50: Audio Board

    Mark Pro TWOi Audio Board Part Number Part Name Description Q'ty Reference CAP CER X7R 1uF 50V 10% 0603 C1,C3,C4,C6,C8,C41,C47,C4 N052007503 CAP CER X7R 0.1uF 50V 10% 0603 8,C49,C50,C51,C52,C53 CAP ELEC 1000uF 10V 20% 35D 51mmH N052002401 CAP ELECT 100uF 16V 20% 0.138"SP C2,C7,C9 N052003506 CAP POLY...
  • Page 51 Mark Pro TWOi RES CF 560 OHM 5% 1/16W 0603 R34,R35 RES CF 150K OHM 5% 1/16W 0603 RES TF 4.3K OHM 1% 1/16W 0603 R19,R22 RES MF 17.8K OHM 1% 1/16W 0603 R5,R10 RES MF 15.8K OHM 1% 1/16W 0603 R4,R13 RES TF 18K OHM 5% 1/16W 0603...

  • Page 52: Front Board

    Mark Pro TWOi Front Board Part No Part Name Description Q’ty Reference 470UF 6.3V 3.5mmSP N052002422 CAP ELECT ECE-BOJU471 C1,C2 0.11mm N052007503 CAP CER X7R 0.1UF 50V 10% 1206 C3,C4,C5 3 X 7 SND630ASR(Common LED DISPLAY Cathod) LED SMT RED/GREEN WATER N045010902 KINGBRIGHT AA2734SRSGC D1,D17...

  • Page 53: Head Phone Board

    Mark Pro TWOi Head Phone Board Part Number Part Name Description Q'ty Reference N041021007 HEADPHONE JACK MARK-XXX N052001204 CAP CERMONO Z5U .1UF 50V 20% .3AX N041034005 HEADER 0.098SP 5P...

  • Page 54: Chapter 6 Schematics

    Mark Pro TWOi Chapter 6 Schematics Engine Board Micro Processor(68331) Interface...

  • Page 55: Engine Board Dram, Level, Shifter

    Mark Pro TWOi Engine Board DRAM, LEVEL, SHIFTER...

  • Page 56: Engine Board Mara

    Mark Pro TWOi Engine Board MARA...

  • Page 57: Engine Board Sound Rom, Uart, Usb, Bridge

    Mark Pro TWOi Engine Board Sound ROM, UART, USB, BRIDGE Engine Board POWER, CLOCK, PLL...

  • Page 58: Scanner Board 38869 Interface

    Mark Pro TWOi Scanner Board 38869 Interface...
  • Page 59 Mark Pro TWOi...

  • Page 60: Scanner Board Front Interface

    Mark Pro TWOi Scanner Board Front Interface...

  • Page 61: Front Board Left

    Mark Pro TWOi Front Board Left...

  • Page 62: Front Board Right

    Mark Pro TWOi Front Board Right...

  • Page 63: Amp Board Engine Io, Midi In & Out

    Mark Pro TWOi Amp Board Engine IO, MIDI IN & OUT...

  • Page 64: Amp Board Speaker, Line In & Out, Headphone

    Mark Pro TWOi Amp Board Speaker, Line IN & OUT, Headphone...

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