Kurzweil Mark Pro 2i User 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 rand names are trademarks or registered trademarks of their respective companies.
Product features and specifications are su ject to change without notice.

IMPORTANT SAFETY & INSTALLATION INSTRUCTIONS
INSTRUCTIONS PERTAINING TO THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS
WARNING: When using electric products, basic precautions
should
always be followed, including the following:
1. Read all of the Safety and Installation Instructions and
Explanation of Graphic Symbols before using the product.
2. Do not use this product near water—for example, near a
bathtub, washbowl, kitchen sink, in a wet basement, or near a
swimming pool, or the like.
3. This product should be used only with a stand or
cart that is recommended by the manufacturer.
4. This product, either alone or in combination with an amplifier
and speakers or headphones, may be capable of
producing sound levels that could cause permanent hearing loss.
Do not operate for
a long period of time at a high volume level or at a level that is
uncomfortable. If you experience any hearing loss or ringing in the
ears, you should consult an audiologist.
5. The product should be located so that its location or position
does not interfere with its proper ventilation.
6. The product should be located away from heat sources such
as radiators, heat registers, or other products that produce heat.
7. The product shouldbe connected to a power supply only of the
type described in theoperating instructions or asmarked onthe
product.
8. This product maybe 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 outlet, contact an electrician to
replace your obsolete outlet. Do not defeat the safety purpose of
the plug.
9. The power supply cord of the productshould be unplugged from
the outlet when left unused for a long period of time.When unplugging
the power supply cord, do not pull on the cord, but grasp it by the
plug.
10. Care should be taken so that objects do not fall and liquids are not
spilled into the enclosure through openings.
11. The product should be serviced by qualified service
personnel when:
A. The power supply cord or the plug has been damaged;
B. Objects have fallen onto, or liquid has been spilled into
the product;
C. The product has been exposed to rain;
D. The product does not appear to be operating
normally or exhibits a marked change in performance;
E. The product 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 service personnel.
13. WARNING: Do not place objects on the product’s power
supply cord, or place the product in a position where anyone
could trip over, walk on, or roll anything over cords of any type.
Do not allow the product to rest on or be installed over
cords of any type. Improper installations of this type
create the possibility of a fire hazard and/or personal injury.
RADIO ANDTELEVISION INTERFERENCE
WARNING: Changes or modifications to this instrument not expressly
approved by Young Chang could void your authority to
operate the instrument.
IMPORTANT:When connecting this product to accessories and/or other
equipment use only high quality shielded cables.
NOTE: This instrument has been tested and found to comply with the
limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection
against harmful interference when the instrument is used in
a commercial environment. This instrument generates, uses,
and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of
this instrument in a residential area is likely to cause
harmful interference, in which case the user will be required
to correct the interference at his or her own expense.
Changes and modifications not expressly approved by the manufacturer
or registrant of this instrument can void the user’s authority to operate
this instrument under Federal Communications Commission rules.
In order to maintain compliance with FCC regulations, shielded cables
must be used with this instrument. Operation with
unapproved equipment or unshielded cables is likely to result in harmful
interference to radio and television reception.
NOTICE
This apparatus does not exceed the Class A limits for
radio noise emissions from digital apparatus set out in the
Radio Interference Regulations of the Canadian Department of
Communications.
AVIS
Le present appareil numerique n’emet pas de bruits
radioelectriques depassant les limites applicables aux
appareils numeriques de la class A prescrites dans le
Reglement sur le brouillage radioelectrique edicte par le ministere des
Communications du Canada.
SAVETHESE INSTRUCTIONS

1
Young Chang Distributors
Contact the nearest Young Chang office listed elow 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 : [phone]
Fax : [phone]
We : www.yapiano.co.kr
YCNA(Young Chang North America)
19060 S Dominguez Hills, Dr Rancho Dominguez,
CA 90220, U.S.A
Tel : [phone]
Fax : [phone]
We : www.youngchang.com
YCRDI(Young Chang R&D Institute)
1432 Main Street Waltham, MA02451, U.S.A
Tel : [phone]
Fax : [phone]
We : www.kurzweilmusicsystems.com

2
Contents
MAR PRO 2I ...................................................................................................................................1
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 ................................................................................10
Introduction .................................................................................................................................................................................10
Cables, Connectors.............................................................................................................................................................10
Installation....................................................................................................................................................................................11
Checking the Parts ..............................................................................................................................................................11
Check that you have 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
Removing the Amp Board..................................................................................................................................................20
Removing the Front Panel Board.....................................................................................................................................21
CHAPTER 3 DIAGNOSTICS .......................................................................................................25
DiagnosticTests.............................................................................................................................................................................25
Entering Diagnostics....................................................................................................................................................................26
DiagnosticTest Modes..................................................................................................................................................................27
Run One Test.........................................................................................................................................................................27
Run Burn Test.......................................................................................................................................................................27
Test Results...........................................................................................................................................................................28
Description of Tests............................................................................................................................................................28
ROM.........................................................................................................................................................................................28
RAM .........................................................................................................................................................................................28
Sine Wave ..............................................................................................................................................................................29
NVRAM....................................................................................................................................................................................30
CHAPTER 4 TROUBLESHOOTING .........................................................................................31
Introduction..................................................................................................................................................................................31
Cables, Connectors.............................................................................................................................................................31
Boot Block ..................................................................................................................................................................................31
Entering the Boot Block.....................................................................................................................................................31
Hard Reset .............................................................................................................................................................................33

3
Software Updates.........................................................................................................................................................................33
File Formats...........................................................................................................................................................................33
Replacing the Battery..................................................................................................................................................................35
Mark Pro 2i Scanner test ............................................................................................................................................................37
Power Problems...........................................................................................................................................................................38
Dead.........................................................................................................................................................................................38
Audio Problems............................................................................................................................................................................39
No Audio.................................................................................................................................................................................39
Front Panel Problems ..................................................................................................................................................................39
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 ........................................................................................................52
Engine Board Micro Processor(68331) Interface.........................................................................................................52
Engine Board DRAM, LEVEL, SHIFTER .........................................................................................................................53
Engine Board MARA............................................................................................................................................................54
Engine Board Sound ROM, UART, USB, BRIDGE .......................................................................................................55
Engine Board POWER, CLOCK, PLL ..............................................................................................................................55
Scanner Board 38869 Interface ........................................................................................................................................56
Scanner Board Front Interface.........................................................................................................................................58
Front Board Left...................................................................................................................................................................59
Front Board Right ................................................................................................................................................................60
Amp Board Engine IO, MIDI IN & OUT............................................................................................................................61
Amp Board Speaker, Line IN & OUT, Headphone........................................................................................................62

4
Chapter 1
Introduction
This chapter provides the service technician with a layout of the front and rear panel features, as well as a rief
explanation of their functions. For in-depth descriptions of the many features the Mark PRO 2i instruments include,
consult the Musician’s Guide.
This chapter also includes a description the sym ols used throughout this manual.
Note: If possi le, all user programs and setups should e 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
Please pay special attention to all Notes, Cautions, and Warnings used throughout this manual. A rief description
of these sym ols follows:
Note: Provides additional information emphasizes specific instructions.
Caution : Instructs you to proceed cautiously so that damage does not occur to the unit or
individual components .
Warning : Alerts you so that damage does not occur to yourself, others, or external devices.

Mark Pro TWOi
5
Introduction to Mark Pro 2i
Mark Pro 2i Rear Panel
Figure 1-1 Mark PRO 2i rear panel
Rear Panel Features
Power Connector— 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 Pro 2i to other MIDI
devices to receive, pass, and send MIDI data.
USB – Transmit/receive MIDI message over USB with host system(typically, PC).

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

Mark Pro TWOi
7
Front Panel Features
Figure 1-4 Mark PRO 2i Front left section
Volume nob — 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. Moving the knob clockwise increases
volume, while moving it counter 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 the Mark-Pro 2i.
Effect & Reverb — Use the buttons to select from two blocks of effects to apply effects and
reverb to programs and setups.
Recording & Playing — The Mark-Pro 2i allows you to record and playback your performance.
Two song spaces are available each with two tracks.
Metro & Rhythm — Use the buttons, you can change the tempo of the metronome.

Mark Pro TWOi
8
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
Transpose — Use this button to change tonality, using Transpose + / Transpose -
button can be up/down up to 2 octaves.
Split & Layer — Use the buttons you can add a voice other than strings or sounds (Layer)
and divide the keyboard of the Mark-Pro2i into two, left and right, and assign a
different voice for each(Split).
Grand 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, which
can also be selected by the Grand Piano button on the left as shown in the
figure 1-6. And the Grand Piano voice, the Mark Pro-TWOi has 64 voices which
can be classified to as 8 categories: 8 piano voices, 8 elec pianos, 8 organs/
keyboards, 8 strings, 8 pads, 8 brasses, 8 guitars/voices, 8 percussion sets.
Global — Use the button , in connection with the 8 buttons on its left (Local, Tune, Touch,
etc) lets you to control various functions affecting the keyboard globally.

Mark Pro TWOi
9
Figure 1-6 Mark PRO 2i Pedal
SUSTAIN — The Sustain pedal lets the notes ring on after the keys are released. Releasing
the pedal will silence the sustained notes.
SOSTENUTO — Press the sostenuto pedal while holding a note on the keyboard, and the
note will sustain as long as you hold the pedal. But all the subsequently play
notes will not be sustained.
SOFT — The soft pedal makes the volume softer when pressed. But it will not affect the
volume 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 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.
After connecting to the outlet, you may turn on the power switch located at the bottom left of the
keyboard. Check the main volume knob is fully down to the left. When the power switch is
turned on, the front panel lights up. In 3 seconds the Mark-Pro 2i is ready to play.

Mark Pro TWOi
10
Chapter 2
Mark Pro 2i Assembly
Introduction
This chapter contains all the procedures for the disassem ly and reassem ly 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 Key oard Assem ly.
Warning: If possi le, save all user programs and setups efore disassem ly. 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 fl at ri on ca les with connectors are keyed, and therefore cannot e reversed. Most fl at
ri on ca les have locking ca le clips. Be sure to reapply the clips when connecting ca les.
When disconnecting and connecting these ca les, you must look for the marking on the edge of
the ca le denoting Pin 1 and e sure that you match it correctly with Pin 1 on the oard.
Cable Routing
In some cases, tape secures ca le connections or fastens ca les to the Top enclosure. Always
peel ack the tape from one side when disconnecting ca les so that the tape remains properly
positioned.
Required Tools and Materials
- screwdriver

Mark Pro TWOi
11
Installation
Checking the Parts
Check that you have all the parts below before you start assembling.
Item No. Item No.
1. Main set 1EA 8. Screws for Side Panel 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 2EA
5. Rear Panel 1EA 12. Screws for keyboard and the stand 4EA
6. Support Legs 2EA
7. Headphone Hanger 1EA
Table 2-1 Mark PRO 2i All the parts list
Figure 2-1 Mark PRO 2i Parts

Mark Pro TWOi
12
Assembling the Stand
* Be careful when placing the Main set in the stand. Do not push down or pull forward
the 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 screw 10 on the hole.
2. Put on the right side panel 3 in the same way.
3. Take out the pedal cable from inside of the pedal box 4.

Mark Pro TWOi
13
Rear Panel Assembly
Figure 2-3 Mark PRO 2i Rear panel 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 Stand
Figure 2-4 Mark PRO 2i Installing the Main set onto the Stand

Mark Pro TWOi
14
1. Place the Main set on the stand so that the wood pegs on the top of the side
panel fit into the holes on the bottom surface of the keyboard.
2. Attach the side panels to the Main set with the metal brackets. Use the bolt 12
for the front hole, and 9 for the rear.
3. Insert the pedal cable connector 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, preventing the pedal box from bending when you
press the pedals.
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

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

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

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

Mark Pro TWOi
18
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.
Removing the Scanner Board
1. Follow the procedure descri ed to remove the top panel Assy.
2. Following Steps 3–5, disconnect the ca les listed in Ta le 2-2
Ref. Name CableType Destination
J6 MIDI/CPU standard wire Engine Board
J
4
F
ront
P
anel
flat
r
i
b
bon
F
ront
P
anel Board
J
2
T
re
b
le
flat
r
i
b
bon
K
e
yboard Assem
b
ly
J
3
Bass
flat
r
i
b
bon
K
e
yboard Assem
b
ly
J
1
2
Engine I/O
S
tandard wire
Amp Board
J9 Piano Pedals Standard wire Pedals
Table 2-2 Connector Board cables