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Mark Pro TWOi

Chapter 2

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.

Warning

: If possible, save all user programs and setups before disassembly. For instructions.

Notes, Cautions, Warnings

Please pay special attention to all Notes, Cautions, and Warnings as they not only point out

specific instructions.

Cables, Connectors

Flat Ribbon Cables

All flat ribbon cables with connectors are keyed, and therefore cannot be reversed. Most flat

ribbon cables have locking cable clips. Be sure to reapply the clips when connecting cables.

When disconnecting and connecting these cables, you must look for the marking on the edge of

the cable denoting Pin 1 and be sure that you match it correctly with Pin 1 on the board.

Cable Routing

In some cases, tape secures cable connections or fastens cables to the Top enclosure. Always

peel back the tape from one side when disconnecting cables so that the tape remains properly

positioned.

Required Tools and Materials

screwdriver

Содержание Mark Pro 2i

Страница 1: ...eil is aproduct line of YoungChangCo Kurzweil is atrademarkof Young Chang Co All other products and brand names are trademarks or registered trademarks of their respective companies Product features a...

Страница 2: ...has been dropped or the enclosure damaged 12 Do not attempt to service the product beyond that described in the user maintenance instructions All other servicing should be referred to qualified servi...

Страница 3: ...an 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 Te...

Страница 4: ...all the parts below before you start assembling 11 Assembling the Stand 12 Disassembling the Main set 15 Check the 5 steps below before you start disassembling 15 Removing the Scanner Board 18 Removi...

Страница 5: ...inted Circuit Boards and Assemblies 42 Engine Board 43 Scanner Board 47 Audio Board 48 Front Board 50 Head Phone Board 51 CHAPTER 6 SCHEMATICS 52 Engine Board Micro Processor 68331 Interface 52 Engine...

Страница 6: ...setups should be saved prior to opening the unit entering the Boot Block to run diagnostics or to perform a hard reset For instructions to save all user programs and setups Notes Cautions Warnings Ple...

Страница 7: ...AV 100 240 VAC 50 60Hz 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 P...

Страница 8: ...Mark Pro TWOi 6 Mark Pro 2i Front Panel Figure 1 2 Mark PRO 2i Front Left panel Figure 1 3 Mark PRO 2i Front Right panel...

Страница 9: ...unter clockwise decreases volume turn to the left is Soft right is Loud Demo Edu The Mark Pro 2i has 3 ensemble demos 50 piano demos and 8 instrumental demos that will aquaint you with the sound of th...

Страница 10: ...and piano Use the button can be just as simple to use as an acoustic piano by disabling all of the non piano functions Voice select Use the buttons selects the piano voice by default when turned on wh...

Страница 11: ...of notes that are already played Power On Off Figure 1 7 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 plu...

Страница 12: ...nly point out specific instructions Cables Connectors Flat Ribbon Cables All flat ribbon cables with connectors are keyed and therefore cannot be reversed Most flat ribbon cables have locking cable cl...

Страница 13: ...and Keyboard Rear 2EA 2 Side Panel Left 1EA 9 Screws for Side Panel and Keyboard Front 2EA 3 Side Panel Right 1EA 10 Screws for Side Panel and Pedal Box 4EA 4 Pedal Box 1EA 11 Screws for Rear Panel 2E...

Страница 14: ...Main set without tightening all the screws on 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 s...

Страница 15: ...l Assembly 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...

Страница 16: ...ector to the jack on the bottom surface of the Main set as shown in the left figure 4 Locate the unit to the desired place and rotate the height adjustment screw until it supports the pedal box preven...

Страница 17: ...Mark Pro TWOi 15 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...

Страница 18: ...Mark Pro TWOi 16 2 Dust Cover Disassembly Figure 2 7 Mark PRO 2i Disassemble Dust cover 3 Grill Disassembly Figure 2 8 Mark PRO 2i Disassemble Grill...

Страница 19: ...Mark Pro TWOi 17 4 Front panel Disassembly Figure 2 9 Mark PRO 2i Disassemble Front panel 5 Keyboard Disassembly Figure 2 10 Mark PRO 2i Disassemble Keyboard...

Страница 20: ...r left side on the front panel Removing the Scanner Board 1 Follow the procedure described to remove the top panel Assy 2 Following Steps 3 5 disconnect the cables listed in Table 2 2 Ref Name Cable T...

Страница 21: ...e any other hardware from this portion of the rear panel 6 Remove the Scanner Board Replacing the Scanner Board 1 Hold the Scanner Board and position it so that the power switch and the rear panel jac...

Страница 22: ...wire Front Panel Board J4 Headphone standard wire Headphone J5 R woofer standard wire Right Speaker J6 R woofer standard wire Right Speaker J7 L woofer standard wire Light Speaker J8 L woofer standard...

Страница 23: ...e cable from the Engine Board to the Amp Board and from Front board to Amp board Removing the Front Panel Board 1 Follow the procedure described on page 19 to remove the Connector Board 2 Following St...

Страница 24: ...e extrusion and install the two screws that secure the front panel edge See Figure 4 8 3 Connect ribbon cable cables in the following order Caution Be sure to look for the marking on the edge of the c...

Страница 25: ...install the screw that secures the front panel edge 3 Connect the stranded wire cable from the Connector Board to on the Engine Board Caution Be sure to look for the marking on the edge of the cable d...

Страница 26: ...Mark Pro TWOi 24...

Страница 27: ...The following lists the diagnostic tests available for the SP2X ROM RAM MARA Sound ROM DRAM Sine MIDI NVRAM Warning Some diagnostic tests erase user programs and setups If possible be sure to save al...

Страница 28: ...segment example entering diagnostics Press either the Yes or No until Appears in the segment And Press the Transpose button for enter into menu item display the following Figure 3 2 7 segment example...

Страница 29: ...of a test press the Transpose button to return to the test menu To exit diagnostics turn the power off and on to return to normal operation Run Burn Test Burn in mode segment display and continuously...

Страница 30: ...e was successful A failure of this test may indicate a problem with the RAM or related circuitry in the Engine Board MARA This test performs a read write of the MARA registers and verifies that the da...

Страница 31: ...ng DAC and OP AMPs Caution The output level of sinewave test is very loud MIDI The MIDI test performs a loop back of the serial port by sending a 23 byte pattern over the external MIDI link This test...

Страница 32: ...t 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 batt...

Страница 33: ...replace surface mount devices contact the service department to order a board replacement International service technicians should contact their appropriate Young Chang Distributor Boot Block Use the...

Страница 34: ...block Installs boot block updates Run Diagnostics Enters the diagnostic test menu For a complete list of tests and the procedure to execute the diagnostic tests Run Engine Exits the boot block and re...

Страница 35: ...e Updates A computer with a MIDI interface and sequencer is necessary to transfer software to your Mark Pro 2i units MIDI Sysex File Formats Software upgrades are stored as standard MIDI files Filenam...

Страница 36: ...rogram 3 Turn on the Mark Pro 2i and follow the procedure to enter the Boot Block 4 Press the Enter button to select uOS 5 The segment shows uOS Start playing the MIDI file from the sequencer While a...

Страница 37: ...follow the procedure to enter the Boot Block 4 Press the Enter button to select 6 The segment shows Start playing the MIDI file from the sequencer While a file is loading the bottom line of the displa...

Страница 38: ...ife pen cap etc into one of the openings between the battery and the holder to lift the battery Figure 4 1 Battery and Holder 2 Ease the battery out of the holder If necessary insert the plastic tool...

Страница 39: ...the battery is nearing the end of its life and has only a few months left At 2 2 volts warning will begin A completely dead oe missing battery may not read exactly 0 0v but will certainly read less th...

Страница 40: ...equence should be observed exactly 0 Blank Display Correct Key name and left decimal point Correctly Key name and left and center decimal points If the correct key name and only the center decimal poi...

Страница 41: ...ll supply voltages Audio Problems No Audio 1 Refer to the Interconnect Diagram 2 Check the standard wire from J9 on the Engine Board to J15 on the Amp Board 3 Check the solder connections at the conne...

Страница 42: ...to the Scanner Board locations J2 and J3 Be certain that the cables are not loose or damaged 2 Disconnect and reseat the cables 3 Refer to the Scanner Board schematics 4 Check U12 IC Scanner 38869 on...

Страница 43: ...till dead remove strip and check contact board for shorts cold solder joints etc 5 Find and replace bad component s or order replacement board Mechanical Noise Check keyboard for broken key weights su...

Страница 44: ...s 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 table...

Страница 45: ...F 50V 5 0603 1 C32 N052007833 CAP CER NPO 33pF 50V 5 NPO 0603 2 C33 C34 N052007827 CAP CER NPO 270PF 50V 5 NPO 0603 8 C58 C61 C63 C66 C69 C72 C74 C76 N052901011 CAP ELECT GP 22uF 10V 20 SZC SMT 1 C164...

Страница 46: ...3 2mmX1 6mm 4 RN1 RN2 RN3 RN4 N051102103 RELAY 5V DPDT G6H 2 DC5 2 RY1 RY2 N051064130 RES CF 1 3K 5 1 16W 0603 1 R1 N051064220 RES TF 2 2K 5 1 16W 0603 2 R2 R7 N051064100 RES CF 1K 5 1 16W 0603 3 R3...

Страница 47: ...PV25 MOTOROLA 1 U1 N062100410 IC MEM SRAM 256kX16 55nS TSOP44 400 LOW PWR 1 U3 N262005532 IC FLASH MEMORY AM29F160D 1 U4 NEW IC LOGIC 74LCX139 TSSOP16 1 U9 NEW IC MEM DDR SDRAM 2Mx16x4 MT46V8M16TG MIC...

Страница 48: ...MR27V128000J SP2 830178 001 1 U47 NEW IC USB FUNCTION GENERAL PURPOSE 1 U48 NEW IC REG ADJ LM1117SX ADJ TO 263 2 U55 U56 NEW IC REG 2 5V FIXED LP2992IM5 2 5 1 U57 N059010062 XTL 24 576MHZ 50PPM FND 1...

Страница 49: ...5065 1 J12 N055001505 IND FE BD 2 5 TURN SMT 1 L1 N051100010 RES NET QUAD ISO 10K 5 1 16W 3 2mmX1 6mm 6 RN1 RN2 RN4 RN9 RN10 RN14 N051100011 RES NET QUAD ISO 100 5 1 16W 3 2mmX1 6mm 8 RN3 RN5 RN6 RN7...

Страница 50: ...52003709 CAP POLY 0 1uF 50V 5 0 2SP 6 C19 C21 C22 C23 C34 C35 CAP ELEC 47UF 16V 20 2 C45 C46 N052001701 CAP ELECT 1uF 25V 20 2 C30 C36 N053010502 DIODE SHOTTKY 5817 SS12 SMT 1A 20V 1 D4 N053000802 DIO...

Страница 51: ...F 270 OHM 5 1 16W 0603 1 R45 RES CF 4 7 OHM 5 1 4W 1206 2 R36 R37 RES CF 1K OHM 5 1 16W 0603 4 R6 R8 R9 R11 RES CF 56 OHM 5 1 16W 0603 4 R38 R40 R42 R44 RES CF 4 7K OHM 5 1 16W 0603 4 R20 R21 R23 R26...

Страница 52: ...P 057 020 153 1 J1 N041030326 HEADER 1 SP DUAL ROW 26P 057 026 153 1 J4 N041030326 HEADER 1 SP DUAL ROW 26P 057 026 153 1 J5 N041034056 HEADER 098 SP 5P 22 03 5055 2 J2 JX N054002906 TRANSISTOR PNP MM...

Страница 53: ...Mark Pro TWOi 51 Head Phone Board Part Number Part Name Description Q ty Reference N041021007 HEADPHONE JACK MARK XXX 2 N052001204 CAP CERMONO Z5U 1UF 50V 20 3AX 2 N041034005 HEADER 0 098SP 5P 1...

Страница 54: ...Mark Pro TWOi 52 Chapter 6 Schematics Engine Board Micro Processor 68331 Interface...

Страница 55: ...Mark Pro TWOi 53 Engine Board DRAM LEVEL SHIFTER...

Страница 56: ...Mark Pro TWOi 54 Engine Board MARA...

Страница 57: ...Mark Pro TWOi 55 Engine Board Sound ROM UART USB BRIDGE Engine Board POWER CLOCK PLL...

Страница 58: ...Mark Pro TWOi 56 Scanner Board 38869 Interface...

Страница 59: ...Mark Pro TWOi 57...

Страница 60: ...Mark Pro TWOi 58 Scanner Board Front Interface...

Страница 61: ...Mark Pro TWOi 59 Front Board Left...

Страница 62: ...Mark Pro TWOi 60 Front Board Right...

Страница 63: ...Mark Pro TWOi 61 Amp Board Engine IO MIDI IN OUT...

Страница 64: ...Mark Pro TWOi 62 Amp Board Speaker Line IN OUT Headphone...

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