Kurzweil RE-210 User manual

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RE-210
Service Manual
© 2005 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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CONTENS
Chapter 1 INTRODUCTION
1.1 Feature
1.2 Brief Description about Hardware
1.2.1 General
1.2.2 Engine
1.2.3 Audio
1.2.4 Power Module
Chapter 2 DIAGNOSTICS
2.1 About Diagnostic
2.2 Entering Scanner Diagnostic
2.2.1 LED and Button Test
2.2.2 Knob Test
2.2.3 Keyboard Test
2.2.4 Pedal Test
2.3 Engine Test
2.3.1 Entering Diagnostic
2.3.2 How To Test
Chapter 3 TROUBLESHOOTING
3.1 Introduction
3.2 Front Panel Problems
3.2.1 Panel does not light at all
3.2.2 Some sections of front panel now working

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3.2.3 Erratic Front panel Activity, Lights Dimming
3.3 Power Problem
3.3.1 No Power
3.3.2 Blown Fuses
3.3.3 Power Switch and Fuse OK, No Power
3.4 Audio Problem
3.4.1 No Audio Distortion
3.4.2 Distortion
3.4.3 Lights on, No Audio
3.4.4 Mal functioning Treble or Bass Section
* Interconnection Diagram
Chapter 4 - PART LIST
4.1 PCB & Sub Assemblies
4.1.1 ASSY PHONE AND POWER
4.1.2 ASSY CONTROL PANEL LEFT
4.1.3 ASSY CONTROL PANEL RIGHT
4.1.4 ASSY SOUND ENGINE
4.1.5 ASSY CABLE
4.1.6 SPEAKERS
CHAPTER 5 - SCHEMATICS
5.1 Block diagram
5.2 Front Panel
5.3 Amplifier
5.4 Sound CPU
5.5 Sound Engine
5.6 Scanner

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Chapter 1
INTRODUCTION
1.1 Feature
• 88 notes, Graded-Hammer type keys
• Three Pedals
• 7 different types of keyboard touch sensitivity
• 37 Preset Sounds (Including Triple-Strike Stereo Piano Sample)
• Real-time Sound Expression
• Sound Layering with Volume Balance.
• Left Key Split
• Transpose, Detune
• 3Reverb and 3 Effects (Chorus1, 2 and Flanger )
• 60-Watt Sound System with Bass and Treble control
• 3 * 7-Segments Display
• 2 songs, 2 tracks Recorder
• Metronome
• Tap tempo
• 50 Piano Demo Songs
• 20 Preset Demo Songs
• Line In / Out
• MIDI In / Out
• 2 Headphone Jacks
1.2 Brief Description of Hardware
1.2.1. General
Mainly, RE-210 is based on KME-61 engine(1 MABEL system, 32poly) and digital
amplifier by APOGEE DDX-Series - DDX-8000(controller) and DDX-2060(power stage)
Power module is made up of SMPS 30V/1.5A from C&C Tech, and a series of DC to DC
converter. L4971(from ST) - get VCC(+5V), LD1086DT33(from ST) +3.3V, LD1086
DT25(from ST) - get +2.5V. Scanner is also composed of MEGA128(ATMEL) this same as
KME-61

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1.2.2. Engine
Basically, RE-210 Sound Engine is based on KME-61. 1 MABLE system(32 poly)
1.2.3. Audio System
Digital Amplifier system from APOGEE, DDX-8000(controller chip) shows great Perfor-
mances & sound. Mainly this chip designed for DVD-receiver and other consumer product.
A short features are below
1. 8-channel, 24-bit digital processing
2. I2C control bus
3. Support 32-192Khz sampling rate
4. Base and Treble control
5. User programmable 28-bit parametric filters
6. Selectable high-pass filter
7. Variable digital limiter functions
Details are in spec sheet, visit following pages
http://www.apogeeddx.com/apogee_products.html#DDX8000
DDX-2060 are power stage amplifier, features are
1. 2 X 35W, 6 ohm
2. Use single power supply(8 to 28V)
3. Digital volume control
Details are in spec sheet, visit following pages
http://www.apogeeddx.com/apogee_products.html#DDX2060
1.2.4. Power Module
Main power is from SMPS(30V, 1.5A), for activating controller (DDX-8000), we use
additional two voltage needed -> +3.3V, +2.5V, +38V(these for DDX-2060) including
VCC(+5V) which delivered from L4971(ST DC-DC Converter). Using L4971 user can select
output voltage from 3.3 to 24V DC, 3.3 and 2.5V is regulated from L4971 output(in RE-
210 output voltage of L4971 is configured +5V). LD1086DT25 and 33 is low drop regulator
IC for +2.5V and +3.3V each.(actually At first we used conventional 7885 but it has a little
drop as input voltage, so we changed it to LD1086 Series), DON’T FORGET POWER
MODULE(SMPS) ARE FREE VOLTAGE!!

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Chapter 2
DIAGNOSTICS
2.1 About Diagnostic Mode
In Diagnostic mode you can check integrity of RE-210. Mainly, there are two distinct
diagnostic mode, one is Scanner Diagnostic and the other is Engine Diagnostic. First,
Scanner diagnostic allow you to check various physical section such as KEYBOARD,
BUTTON and LEDs, PEDAL, and KNOB. Second Engine Diagnostic you can see the state
of the sound engine, for example, Sound ROM, D-RAM and so on…
2.2 Entering Scanner Diagnostic
How To enter scanner diagnostic mode
1. Turn the power up
2. After power up normally press “DEMO” and “MIDI/Pref” button simultaneously
3. After step 2, segment displays “DIG” and system entering scanner diagnostic
mode
5. OK, now your in scanner diagnostic mode
2.2.1 LED and Button Test
During led test you can investigate current state of the LED. Pressing any button turns
corresponding LEDs are on (where corresponding means LEDs are connected to button
Such as press “REVERB” button turns all REVERB LEDs are on, and “EFFECTS” too.)
Don’t forget. “UP” and “DOWN” button do not have led connected, so push “UP” or
“DOWN” button alone does not turn any led on. You can turn all LEDs on at one time,
press “UP” and “DOWN” button simultaneously. Turns all LEDs on, It might be flicker, but
it’s OK.
2.2.2 Knob Test
This test you can check integrity of the 3 knobs. RE-210 has 3 knobs, “VOLUME”,
“TREBLE” and “BASS”. Turn left or right any knob displays current value of the knob you
touched. Each has a little bit different ranges. Ranges are below. Be sure that “DOT”
displayed during the KNOB test means the Knob - connected to DOT - is activate now.
Don’t forget error range is +/- 1 or 2. The range of each Knob and corresponding Dots are

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described below.
VOLUME Knob is 0 to 255 range(+/- 1 or 2 error will be ok) and Leftmost Dot on,
BASS and TREBLE Knob is 0 to 25 range and
BASS makes centered Dot turns on and TREBLE makes Right most dots on
(and also has same error tolerance as VOLUME)
2.2.3 Keyboard Test
This test you can check each key of the keyboard. If any key press segment displays
corresponding Key name Key Number such as press C4, segment displays “C 4”
Each key has two key switches. Press softly(about 1/4 of the whole pressure) makes first
switch on and leftmost dot turns on, and press a key firmly make rightmost dot turns on
2.2.4 Pedal Test
During this test you can check the correctness of the built-in 3-Pedals. All pedal
displays a same value during this test. If pressed segment displays “127”, if not segment
displays “0”. As knob test did, dot displays current position of the each pedal. Such as
press leftmost pedal, turns leftmost dot on and so on.
2.3 Engine Diagnostic
2.3.1 Entering Diagnostic
Following buttons used in Diagnostic
• Entering Diagnostics : Press “MIDI/Pref” when power on
• Changing Menu item : “UP” and “DOWN” button
• Select and Cancel : “Electric Bass” – Cancel, “Custom” - Enter
How To Enter Diagnostic
1 Power up the device
2. All LEDs in front panel, flashed one time. If not check connection cable between
Engine Board and Front Board.
3. Press “MIDI/Pref” button and system will be entering boot block mode.
After system entering boot block, 7-Segment displays “uOS”(mean update
Operating System)
4. Then press “UP” button twice, and then Segment displays “DIG” now system

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ready to entering diagnostic routine
5. After step 4, Press enter button, and enter Diagnostic mode
One for the first time in diagnostic mode, system displays “One” press “UP” and
“DOWN” button can access both “ONE” and “BURN-IN”
In one test, ease test item tested separately, in BURN all items continuously
In burn-in mode Rattle Test will be skipped.
In burn-in mode sine wave test lasts only 2 seconds
If error occurred in any test(one or burn-in, “Record” button will turn on as RED
Menu test burn-In test
‘ROM’ - ROM Test ‘ROM’ - ROM Test
‘RAM’ - RAM Test ‘RAM’ - RAM Test
‘MBL’ - MABEL Test ‘MBL’ - MABEL Test
‘SRM’ - Sound ROM (SROM) Test ‘SRM’ - Sound ROM (SROM) Test
‘DRM’ – Delay RAM Test ‘DRM’ – Delay RAM Test
‘MID’ – MIDI Test ‘MID’ – MIDI Test
‘SIN’ – Sine Test ‘SIN’ – Sine Test
‘RTL’ – Rattle Test
2.3.2 How to Test
After see ‘One’ in front panel. Press enter button (custom) and entering each test. you
can access each test item with “UP and “DOWN” button After selecting each test item
press enter, such as Select ‘ROM’ Test press Custom(Enter) button and result will be
displayed for &=Segment.

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Chapter 3
Troubleshooting
3.1 Introduction
Execute “Hard Reset” first, if you find any problem. After boot-up normally, press
“MIDI/Pref” button, and then press “Percussion” button And panel displays “Y ?” press
“UP” or “DOWN” button you like. “UP” button resets all system. Be careful, all song
recorded will be deleted during hard reset.
ONCE AGAIN!!
1. Boot up normally
2. Press “MIDI/Pref” Button
3. Press “Percussion” button displays “rST” in Front panel.
4. After push “Percussion” button, panel displays “Y ?”
5. Press “UP” button execute a “Hard Reset”
6. That’s ALL
3.2 Front Panel Problems
3.2.1 Panel does not light at all
Check connection able between front panel and engine
Check +5V supply on both Engine and Front panel
3.2.2 Some Sections of Front Panel not working
Check connection cable between front panel board (24 pin)
3.2.3 Erratic Front Panel Activity, Lights Dimming
Connection cable between engine and front panel would be smashed because
Of Shield cover. Check connection cables
3.3 Power Problem
3.3.1 No power
First check input ac voltage of power module.

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3.3.2 Blown Fuses
Remove cover and change fuse
3.3.3 Power Switch and Fuses OK, No Power
Should carefully check power cable between Power Module and Engine Board (4pin)
3.4 Audio Problem
3.4.1 No Audio, Distortion
Check connection cable both woofer and tweeter, headphone
3.4.2 Distortion
Audio out and in jack are bed, head phone jack too
3.4.3 Lights on, No Audio
If all cables ok, check, +2.5V, 3.3V, +30V power on the amplifier section
of the engine board. For proper function, audio amplifier needs all 2.5V, .3.3V, +30V
3.4.4 Malfunctioning Treble or Bass Section
First check scanner diagnostic, if Knob Test OK, But still have a problem. Check I2C line
at the scanner. (U5, PIN#25, 26)

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Interconnection Diagram

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Chapter 4
PART LIST
4.1 PCB & Sub Assemblies
Part No Description Q’ty
N012103771 ASSY PHONE & POWER 1
N012104711 ASSY CONTROL PANEL LEFT 1
N012104721 ASSY CONTROL PANEL RIGHT 1
N012300261 ASSY SOUND ENGINE 1
4.1.1 ASSY PHONE AND POWER
Part No Description Q’ty
N012103771 ASSY PHONE&POWER(usa/eur/dom) 1
N012106050 ASSY CABLE HEADPHON 1
N013050101 CABLE HEADPHONE 1000mm 1
N055002105 FERRITE core op 14.2x28.5-6.4hsn-06 1
N013050601 CABLE POWER SWITCH 1000mm 1
N025323308 MACHINE SCREW 1
N025874302 NUT M3 DIN934 1

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Part No Description Q’ty
N027112100 STAR WASHER 3.3X6.5X0.5 WHITE 1
N032008807 BRACKET HEADPHONE JACK 1
N033101513 PCB PHONE 1
N041021007 HEADPHONE JACK 2
N041034005 HEADER .098"SP 5P (22-03-5055) 1
N042005018 GROUNDING WIRE 1
N043010113 POWER SWICH (KCD1-B3 Z10133BB, ZHONGXUN) 1
N052001204 CAP CERMONO Z5U EP/EG20/YDP2000N 2
4.1.2 ASSY CONTROL PANEL LEFT
Part No Description Q’ty Location
N012104711 ASSY FRONT PANEL LEFT(DIP) 1
N012104712 ASSY FRONT PANEL LEFT(SMD) 1
N033118811 PCB FAB(Left Front Panel) 1
N043010211 Tact Switch(160gf,Blue/Gray) 12 SW1~3,8~11,16~18,23,24
N045010901 LED SMD RED 1206 13 D1~3,8~10,15~17,22,24,28,32
N045010911 LED SMD RED/GREEN SPEARTION 1 D23
N041031230 HEADER 0.1SP DUAL ROW 24P 1 J3
N045020230 LED DISPLAY 3x7 snd 430 asg 1 DS1
N051101421 RES POT 10K LIN H20XL12.5XW9.8,6mmπ 3 R4~6

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4.1.3 ASSY CONTROL PANEL RIGHT
Part No Description Q’ty Location
N012104721 ASSY FRONT PANEL RIGHT(DIP) 1
N012104722 ASSY FRONT PANEL RIGHT(SMD) 1
N033118812 PCB FAB(Right Front Panel) 1
N043010211 Tact Switch(160gf,Blue/Gray) 25 SW4~7,12~15,19~22,25~37
N045010901 LED SMD RED 1206 25 D4~7,11~14,18~21,25~27,29~31,33~39
N051064033 RES TF 8 R7~14
N051101703 RES CF 1 R3
N052007503 CAP CER X7R 3 C3~5
N054000802 TR SOT-23 MMBT2222L 8 Q11~18
N054002906 TR PNP SOT-23 MMBT2907L 10 Q1~10
N061000302 IC LOGIC SOP16 1 U1
N061013902 IC LOGIC SOP20 1 U2
N061014003 IC LOGIC SOP20 1 U3
N041031220 HEADER .1"SP DUAL ROW 20P 1 J1
N041031230 HEADER 0.1SP DUAL ROW 24P 1 J2
N051000901 RES 10K X 4 5PIN 1 R2
N051000906 RES 10KX9 10PIN 2 R1,15
N052002422 CAP ELECT 2 C1,2
N013050701 CABLE FRONT PANEL LINK 30mm 1
N013050801 CABLE SPEAKER TWEETER LEFT 1200mm 1

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Part No Description Q’ty Location
N013050802 CABLE SPEAKER TWEETER RIGHT 650mm 1
N025324306 MACHINE SCREW 22
N025874303 NUT M4 4 C/P + TWEETER
N027113160 FLAT WASHER 4.5X10X0.5AN 4 C/P + TWEETER
N027211160 SPLIT LOCK WASHER 4 C/P +TWEETER
N032020522 TWEETER SPEAKER 2
N032026395 CONTROL PANEL1.0 t EGI 1
N035020631 LED WINDOWS 1
N035022633 Large Button With LED(Gray) 3
N035022634 Large Button With LED(Black) 20
N035022635 Large Button No LED(Black) 2
N035022636 Large Button With LED(Red) 1
N035022643 Small Button With LED(Gray) 2
N035022644 Small Button With LED(Black) 7
N035022645 Small Button No LED(Black) 2
N035026821 LED Light Pipe 6
N035035401 KNOB LEBEL 3
S00EZ7898 velcro 55X64X0.35t 2

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4.1.4 ASSY SOUND ENGINE
Part No Description Q’ty Location
N012300261 ASSY SOUND ENGINE(usa/eur/dom) 1
N012100261 ASSY SOUND ENGINE(DIP) 1
N012100262 ASSY SOUND ENGINE(SMD) 1
N033100502 PCB ENGINE 1
N034012141 LABEL SERIAL NUMBER 1
N049000030 MCU 1 U5
N051064110 RES TF 3 R6,13,64
N051066034 RES TF 1 R1
N051085053 RES TF 1 R41
N051100010 RES NET QUAD ISO 9 RN1,2,8,9,13~17
N051100011 RES NET QUAD ISO 7 RN3~7,10,11
N051101706 RES CF 4 R53,55,58,60
N051101708 RES TF 4 R26,27,31,32
N051101714 RES TF 3 R29,30,56
N051101718 RES CF 1 R33
N051101724 RES CF 1 R63
N051101730 RES CF 6 R4,23,25,35,54
N051101738 RES CF 2 R36,61
N051101740 RES CF 1 R74
N051101745 RES CF 3 R21,39,75

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Part No Description Q’ty Location
N051101757 RES CF 6 R2,3,5,22,24,46
N051101760 RES CF 2 R72,73
N051101780 RES CF 6 R47~52
N051101790 RES CF 3 R57,59,62
N051101791 RES CF 1 R34
N051103074 RES MF 4 R12,17,37,40
N051120030 RES TF 1 R28
N051125149 RES MF 4 R43~45,67
N051125202 RES TF 2 R38,42
N051130341 RES TF 4 R10,11,15,16
N051130350 RES TF 2 R9,14
N052001520 CAP TANT 2 C35,44
N052005326 CAP CER 2 C30,47
N052007001 CAP CER 2 C133,134
N052007002 CAP CER 2 C61,62
N052007004 CAP CER NPO 20 C5,73,74,95~100,139,144~148,189,190~193
N052007033 CAP CER 4 C135~138
N052007401 CAP CER NPO 29 C63~70,75~94,101
N052007503 CAP CER X7R 63 C29,31,37,38,40~41,45,46,48,51,54,71,72,
102~130,132,140,141,143,149,159,160,166,168
N052007809 CAP CER NPO 2 C3,6

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Part No Description Q’ty Location
N052007823 CAP CER X7R 1 C4
N052007824 CAP CER Z5U 13 C2,8,10,13,19,22-
27,32,34,42,49,53,56,180,181,183-188
N052007847 CAP CER NPO 1 C152,161
N052080001 CAP CER NPO 2 C154,155,
N053000703 DIODE RECT GP SMT 1A S1A SMA 1206 1 D4
N053000712 DIODE SHTKY SIG 5NS LO-C SL 2 D5,6
N053000802 DIODE SWITCH SMT DL-35 1 D3
N053001011 DIODE TVS 1 D1
N054000102 TR SOT-23 KST3904 1 Q3
N055001504 IND FE BD SMT 300mA 16 L8~15,16~18,20,21,23,26,29
N055001505 IND FE BD 2.5-TURN SMT 3 L19,22,24
N055001509 IND FE BD SMT 200mA 600Ω 2 L1,2
N059010051 CRYSTAL 16.0000MHz +/- 50PPM 1 Y1
N059010060 CRYSTAL 20.0000MHZ +/-50PPM 1 Y3
N059010062 CRYSTAL 24.576MHZ +/-50PPM FND 1 Y2
N061000802 IC LOGIC FAIRCHILD(TI) SOT-23 2 U14,15
N061000910 IC DIG UNBUF INV TINY SOT23-5 3 U17,22,23
N061007144 IC LOGIC SOP14 150 1 U27
N061008011 IC LOW DROP VOLTAGE REG 3.3V D2PACK 1 U4
N061008021 IC LOW DROP VOLTAGE REG 2.5V D2PACK 1 U2

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Part No Description Q’ty Location
N061010302 IC LOGIC SOP14 1 U7
N062001301 IC MPU MOTOROLA 1 U12
N062004905 IC IF UART W/FIFO＇S PLCC44P 1 U24
N062005532 IC MEM FLSH ROM 1MX16 70nS 1 U10
N062005704 IC GAL PLCC20,SMT 16V8A-150J 1 U21
N062100410 IC MEM SRAM 256kX16 55nS LOW PWR 1 U11
N062100416 IC MEMORY DRAM 1MX16 70nS(max) 1 U20
N062200201 IC LEVEL TRANSLATOR SOT23-8 1 U25
N062200211 IC STEREO AUDIO DAC 1 U30
N063002302 IC OPT COUPLER SOP6-170 1 U8
N064002010 IC ANA VCC MONITOR 4.75V SOT23 1 U6
N083016001 IC MASKROM BASE HI 830160-01 1 U18
N083016101 IC MASKROM BASE LO 830161-01 1 U19
N261008031 IC DIGITAL PROCESSOR 1 U1
N261008041 IC POWER AMP 35X2W CHANNEL POWER 1 U3
N266000412 IC CUSTOM 1 U16
N035040201 BATTERY HOLLDER TOSHIBA 1 J19
N041010302 JUMPER .1"SP 2POS 2 @J13,15
N041021005 JACK MIDI 5PIN(PCB) 2 J10,11
N041025206 HEADER .1"SP 6PIN DUAL3P 1 J12
N041025302 HEADER .156SP 2P (09-65-2028) 4 J3~6

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Part No Description Q’ty Location
N041025307 HEADER .156"SP 4P YW396-04V 1 J2
N041030002 HEADER .1"SP SGL ROW 2P 1 J13
N041030003 HEADER .1"SP 3PIN 1 J15
N041030150 HEADER DUAL 0.1"SQR 50POS 1 U9
N041031110 JACK 1/4" STEREO 1 J39,40
N041031220 HEADER .1"SP DUAL ROW 20P 3 J7~9
N041034004 HEADER .098"SP 4P (22-03-5045) 1 J29
N041034005 HEADER .098"SP 5P (22-03-5055) 1 J1
N052001223 CAP CERMONO 1 C167
N052001721 CAP ELEC 2 C7,169
N052002411 CAP ELECT 2 c12,182
N052002424 CAP ELECT 2 C131,153
N052003514 CAP ELECT 2 C28,43
N052003536 CAP POLY 2 C33,50
N052003727 CAP POLY 1 C164,165
N052004201 CAP ELECT EP/EG20/YDP2000N 4 C9,55,158,179
N052004204 CAP ELECT YDP2000N 1 C39
N052004214 CAP ELEC 1 C163
N052004315 CAP ELEC 4 C36,52,150,151
N052005102 CAP ELECT 3 C1,20,21
N052901602 CAP ELC GP 0.197"SP RAD 1 C142