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WK6SE and WK8SEWK6SE and WK8SEWK6SE and WK8SEWK6SE and WK8SEWK6SE and WK8SEService Manual addendumService Manual addendumService Manual addendumService Manual addendumService Manual addendumThis is a service manual integration for WK6SE and WK8SEinstruments, sometimes the contents of these pages replace thecontents of 270215 Service Manual sometimes these are anintegration. Please note that only 761195 - CPU & SOUNDGENERATOR BOARD is a new pcb assembly, all others boardsremains the same of WK6/8 respectively, only WK8SE have theSCSI Interface Board, the new Hard Disk contents differ fromWK6/8 contents and finally the LCD display is a new one but fullycompatible with the older one, the only difference is the blackbackground instead of the blue background.

SCSI SPECIFICATIONSSCSI SPECIFICATIONSSCSI SPECIFICATIONSSCSI SPECIFICATIONSSCSI SPECIFICATIONSSCSISCSISCSISCSISCSI s t ands f o r SMALL COMPUTER SYSTEM INTERFACE.SMALL COMPUTER SYSTEM INTERFACE.SMALL COMPUTER SYSTEM INTERFACE.SMALL COMPUTER SYSTEM INTERFACE.SMALL COMPUTER SYSTEM INTERFACE.SCSI is a data transfer standard that allows large amounts ofdata to be sent and received.The WK6SE instrument is predisposed for the installation of theSCSI interface, instead WK8SE is produced with it.The SCSI interface allowing the user to connect external SCSIand SCSI II devices such as CD Rom and Zip™ removable diskdevices.Note:Note:Note:Note:Note: A new Zip™ removable disk must be pre-initialized in IBMCompatible mode.

ConnectionsConnectionsConnectionsConnectionsConnectionsUp to 7 devices can be connected to the SCSI port of the WK6/8 by means of a 50 pin SCSI cable.

SCSI ID NumbersSCSI ID NumbersSCSI ID NumbersSCSI ID NumbersSCSI ID NumbersEach device connected in a SCSI chain must be distinguished byits SCSI ID number ( 0-7).This means that when two or more devices are connected, youmust set both devices with a different SCSI ID numbers so thattheir do not conflict.If the SCSI ID number is set correctly the WK6/8 will be able torecognize the SCSI device by the appropriate ID number.

Warnings:Warnings:Warnings:Warnings:Warnings:#1 WK6/8 use a SCSI type II connector (50 pin female).#2 Use SCSI cables as short as possible.#3 Do not allow the total length of all SCSI cables connecting the

chain of devices to exceed 6,5mt.#4 Do not connect or disconnect SCSI cables when the power of

any device is turned ON.#5 The device at the end of a SCSI chain must be TERMINATED.#6 It is important to turn on the external devices before the

keyboard.#7 It is not possible to connect two devices of same type such

CD Rom as CD Rom and so on.

Features:Features:Features:Features:Features:WK6/8 connected via the SCSI port allows you to manipulate viathe Sample Translator, Sample files AKAI S 1000/1100/3000,.Wav, .Aiff, SDII, .Krz 2000/2500 or via the Disk Menu opera-tions such as SONG, MIDI fi les, Styles, Groove, and relativeresources (please refer to the Owner's Manual).

KEYBOARD SCSI CD-ROM OTHER/LASTSCSI DEVICE

max=7TERMINATION

OFF

ON

ORHARDWARE TERMINATION

SCSI ID = 0 SCSI ID = 1...7

L max = 6,5mt

A A or B A or BA or B

High-Density Male 50-pin - Micro or Mini DB50 Low-Density Male - Centronics 50-pinA type connector B type connector

Spare Part ListSpare Part ListSpare Part ListSpare Part ListSpare Part List

Note: The followings are the spare parts relative to WK6SE and WK8SE models only forother parts refer to WK6 and WK8 spare part list.

LegendLegendLegendLegendLegendWK6SE = WK6SE model onlyWK8SE = WK8SE model onlyGold= Gold paint finiture

AccessoriesAccessoriesAccessoriesAccessoriesAccessories

271315 Owner’s Manual (Italian Language)(WK6SE)(WK8SE)271316 Owner’s Manual (English Language)(WK6SE)(WK8SE)955947 Operating System Disk (WK6SE)(WK8SE)

Bottom AssemblyBottom AssemblyBottom AssemblyBottom AssemblyBottom Assembly

652750 Bottom Chassis (WK6SE)652718 Bottom Chassis (WK8SE)653508 Bottom Chassis (WK6SE)(WK8SE)(Gold)653508 Bottom Chassis (WK6SE)(WK8SE)(Gold)

561016561016561016561016561016 Hard Disk with “Italian-SE” Contents (WK8SE)Hard Disk with “Italian-SE” Contents (WK8SE)Hard Disk with “Italian-SE” Contents (WK8SE)Hard Disk with “Italian-SE” Contents (WK8SE)Hard Disk with “Italian-SE” Contents (WK8SE)

561017561017561017561017561017 Hard Disk with “International-SE” Contents (WK8SE)Hard Disk with “International-SE” Contents (WK8SE)Hard Disk with “International-SE” Contents (WK8SE)Hard Disk with “International-SE” Contents (WK8SE)Hard Disk with “International-SE” Contents (WK8SE)

Top AssemblyTop AssemblyTop AssemblyTop AssemblyTop Assembly

653496 Top Chassis (WK6SE)653497 Top Chassis (WK8SE)653506 Top Chassis (WK6SE)(Gold)653507 Top Chassis (WK8SE)(Gold)660732 Tweeter Grid (WK6SE)(WK8SE)(Gold)660731 Left Speaker Grid (WK6SE)(WK8SE)(Gold)660730 Right Speaker Grid (WK6SE)(WK8SE)(Gold)653509 Display Support (WK6SE)(WK8SE)(Gold)340587 Power Switch Rubber Actuactor340532 Reinforcement Spacer

080763080763080763080763080763 320X240dots Quarter VGA LCD (Black Background) (WK6SE)(WK8SE)320X240dots Quarter VGA LCD (Black Background) (WK6SE)(WK8SE)320X240dots Quarter VGA LCD (Black Background) (WK6SE)(WK8SE)320X240dots Quarter VGA LCD (Black Background) (WK6SE)(WK8SE)320X240dots Quarter VGA LCD (Black Background) (WK6SE)(WK8SE)180771 “MEGA-STATION” Adhesive Label (WK6SE)(WK8SE)

Cpu & Sound Generator BoardCpu & Sound Generator BoardCpu & Sound Generator BoardCpu & Sound Generator BoardCpu & Sound Generator Board

761195761195761195761195761195 Cpu & Sound Generator Board (Pcb#315150/1)(WK6SE)(WK8SE)Cpu & Sound Generator Board (Pcb#315150/1)(WK6SE)(WK8SE)Cpu & Sound Generator Board (Pcb#315150/1)(WK6SE)(WK8SE)Cpu & Sound Generator Board (Pcb#315150/1)(WK6SE)(WK8SE)Cpu & Sound Generator Board (Pcb#315150/1)(WK6SE)(WK8SE)340934 * Insulation Washer for Quartz340547 * 6.5mm Spacer231000 * BLM21A102STP Smd EMI Coil For Signal230527 * BL02RN2-R62 EMI Coil For Signal141018 * 20 Contacts Vert Female Connector141016 * 16 Contacts Vert Female Connector141011 * 6 Contacts Vert Female Connector141010 * 4 Contacts Vert Female Connector140922 * 32 Contacts P=2mm Vert Male Strip140917 * 2 Contacts Vert Male Connector140915 * 44 Contacts P=2mm Vert Male Strip140913 * Simm Socket 30 Pin140881 * 14 Contacts Vert Female Con. For Mylar Cable140877 * Jumper For Contacts Strip (p=2.54mm)140874 * Single In Line Vert Male Strip (specify contacts)140873 * 4 Contacts Vert Male Connector140866 * 34 Contacts Vert Male Connector Din41651140854 * 16 Contacts Vert Male Connector Din41651140325 * 12 Contacts Vert Male Connector120857 * 6.3mm Vertical Male Faston for Pcb106003 * MAX709 Power Monitor With Reset105009 * DISP3 QFP Digital Sound Processor (Hitachi)105005 * FPGA - Video/Lcd Controller105004 * MC68360EM25 QFP Cpu104041 * 23C64000G SOP 64MBit Rom “Wave98”104037 * 23C32000G 32Mbit Rom “Styles”104036 * MX23C6410 64Mbit Rom “Samples2”104035 * MX23C6410 64Mbit Rom “Samples1”104020 * KM62256CLG SOP 256Kbit SRam Ta=55nS104010 * HM514280AJ 4M5bit Dram Ta=70nS104009 * HM5118160ALJ 16Mbit Dram Ta=70nS104007 * E28F016SV-70 1Mbit Flash Memory Ta=70nS103012 * 74HC125D SOIC Quad Tri-State Buffer103010 * 74HC04D SOIC Hex Inverter103004 * AD1865R SOP 18bit D/A Converter103002 * 74HC245DW SOIC Octal Bus Transceiver103001 * 74HC08D SOIC Quad 2-Input And Gate101506 * 74AC04D SOIC Hex Inverter Gate101502 * 74AC125D SOIC Quad Tri-State Buffer100904 * LM393 Dual Comparator100731 * DS1202 Clock Calendar100591 * GM82C765B Floppy Disk Controller100059 * 7805 +5V 1A Voltage Regulator100058 * 7905 -5V 1A Voltage Regulator091000 * BC847B/C TO236 Smd Npn Transistor (8BB/C-1F/G)090153 * BC327 TO92 Pnp Transistor090152 * BC337 TO92 Npn Transistor

081000 * PMLL4148 Smd 100mA 75V Signal Diode080156 * 1N4002 1A 100V Rectifier Diode070160 * 2K2 20% Horizontal Linear Trimmer055103 * 470E X4 1/16w 5% Smd Resistor Array055102 * 33E X4 1/16w 5% Smd Resistor Array055101 * 4K7 X4 1/16w 5% Smd Resistor Array055100 * 100E X4 1/16w 5% Smd Resistor Array054084 * 10M 1/10w 5% Smd Resistor 0805054072 * 1M 1/10w 5% Smd Resistor 0805054056 * 47K 1/10w 5% Smd Resistor 0805054048 * 10K 1/10w 5% Smd Resistor 0805054044 * 4K7 1/10w 5% Smd Resistor 0805054042 * 3K3 1/10w 5% Smd Resistor 0805054040 * 2K2 1/10w 5% Smd Resistor 0805054039 * 1K8 1/10w 5% Smd Resistor 0805054038 * 1K5 1/10w 5% Smd Resistor 0805054036 * 1K 1/10w 5% Smd Resistor 0805054034 * 680E 1/10w 5% Smd Resistor 0805054030 * 330E 1/10w 5% Smd Resistor 0805054028 * 220E 1/10w 5% Smd Resistor 0805054027 * 180E 1/10w 5% Smd Resistor 0805054024 * 100E 1/10w 5% Smd Resistor 0805054018 * 33E 1/10w 5% Smd Resistor 0805054012 * 10E 1/10w 5% Smd Resistor 0805052030 * 330E 1/8w 5% Resistor050271 * 150E 1/4W 5% Resistor030650 * 470u 25V 20% Vert Electrolytic Capacitor030485 * 100u 25V 20% Vert Electrolytic Capacitor030245 * 10u 50V 20% Vert Electrolytic Capacitor021031 * 390n 63V 10% MKT Polyester Capacitor011103 * 1u 16V 10% Cer. Cap. Smd CL2 XTR 1206011060 * 100n 50V 10% Cer. Cap. Smd CL2 Y5V 0805011048 * 10n 50V 10% Cer. Cap. Smd CL2 X7R 0805011038 * 1n5 50V 10% Cer. Cap. Smd CL2 X7R 0805011030 * 330p 50V 10% Cer. Cap. Smd CL2 X7R 0805011028 * 220p 50V 10% Cer. Cap. Smd CL2 X7R 0805011024 * 100p 50V 10% Cer. Cap. Smd CL2 X7R 0805011020 * 47p 50V 10% Cer. Cap. Smd CL2 X7R 0805011016 * 22p 50V 10% Cer. Cap. Smd CL2 X7R 0805011014 * 15p 50V 10% Cer. Cap. Smd CL2 X7R 0805011012 * 10p 50V 10% Cer. Cap. Smd CL2 X7R 0805011010 * 6p8 50V 10% Cer. Cap. Smd CL2 X7R 0805010732 * 4.194304MHz Quartz Oscillator010727 * 45.1584MHz Quartz Resonator010725 * 20MHz Ceramic Resonator With Capacitors010710 * 32768Hz Quartz Resonator010704 * 16MHz Quartz Resonator

SCSI Interface BoardSCSI Interface BoardSCSI Interface BoardSCSI Interface BoardSCSI Interface Board

761177761177761177761177761177 SCSI Interface Board (Pcb#315149)(WK8SE)SCSI Interface Board (Pcb#315149)(WK8SE)SCSI Interface Board (Pcb#315149)(WK8SE)SCSI Interface Board (Pcb#315149)(WK8SE)SCSI Interface Board (Pcb#315149)(WK8SE)140940 * 50 Contacts Hor Female SCSI2 Connector140887 * 34 Contacts Hor Male Connector Din41651 w/Eject110086 * 25V 1,5A Fast Picofuse103034 * AM53CF94 SCSI-2 Controller103012 * 74HC125D SOIC Quad Tri-State Buffer103010 * 74HC04D SOIC Hex Inverter080173 * 1N5817 1A 20V Schottky Rectifer Diode010725 * 20MHz Ceramic Resonator With Capacitors560022 * 20V8AS-15HB1 Programmed GAL

Wiring ConnectionWiring ConnectionWiring ConnectionWiring ConnectionWiring Connection

841185 Ground Connection 7.5cm (WK8SE)841152 34 Wires 5cm Flat Cable with Ferrite (WK8SE)

2020202020

2121212121

2222222222

2323232323

GENERALMUSIC S.p.A. ItalySCHEMATIC DIAGRAM WK6SE/WK8SE

Cpu & Sound Generator Board Pcb Layout

DRW: BOCCATO

APP: PANNELLI REV: 28-07-97

DISK: 5 PART: 1/1CKD: RICCOBELLI ALL RIGHTS ARE RESERVED, NO COPIES OR

REPRODUCE THIS DOCUMENT WITHOUT

WRITTEN CONSENT BY GENERALMUSIC.

DWG: 315150/1

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Questions Answers

11

How can I update the Operating System?

Or

How can I reload the Operating System?

The instrument is equipped with Flash Rom so that you can update it with the last operating system containing fixes, updates and new features.These updates can be downloaded directly from our web site at http://upgrade.generalmusic.com/cgi-bin/upgrade/upgrade.cgi.Afterwards copy the OS file downloaded in the diskette, using a pre-formatted disk from your instrument prevent possible errors, and follow the instructions below:1- With the instrument turned off, insert the last Operating System disk then turn the instrument on.2- The display shows "Loading OS-DISK clears ALL MEMORY!! <Enter to load / Escape to abort>".3- Press ENTER then wait about 3 minutes for the OS loading.4- The display shows "Loading successful!! <Enter to continue>", then press ENTER.5- Turn off the instrument and remove the Operating System disk.6- As you turn the instrument on, keep rotating the DIAL until the display shows "!!WARNING!! Dial on power-up requests Memory Clear!! <Enter to clear / Escape to abort>7- Press ENTER, you have now completed the update process.

22 How can I do a complete SYSTEM RESET?

As you turn the instrument on, keep rotating the DIAL until the display shows "!!WARNING!! Dial on power-up requests Memory Clear!! <Enter to clear / Escape to abort>Then press ENTER.

33 What do the pedals make?

On this instrument the pedals are fully programmable by the customer, but if you play with a GRAND PIANO style the three pedals change with the following functions:Vocal On/Off (left pedal):Vocal On/Off (left pedal):This pedal switch on or off the vocal processor.Sostenuto (centre pedal):Sostenuto (centre pedal):This pedal is a switch control pedal (on/off) which sustains the notes of the key currently depressed, all new notes played after having depressed the pedal are not affected, this pedal operates like a grand piano centre pedal.Damper (right pedal):Damper (right pedal):This pedal applies the sustain effect to all notes released. If you release a note after depressing the damper, the note will proceed towards its natural decay according to the type of sound played.The Damper pedal is particularly effective with Piano type sounds, it is controlled by a "Damper Physical Model" patented by Generalmusic.

44Why do the uppermost keys play always sustained?

For some piano sounds the notes from E6 to C8 are automatically sustained such as in an acoustic piano.

55 Why do all pedals work in reverse mode?Set properly the pedals in "GENERAL - Gen.controls" as normally closed (GM models) or as normally open (other brands).

66Could the keyboard accept the DAMPER pedal with a variable variation (potentiometer) like other GM Piano models?

These keyboards accept any kind of pedals, by default they are set in "GENERAL - Gen.controls" as normally closed, and in "CNT/PADS - Pedals prog." as Vocal OnOff/SOSTENUTO/DAMPER functions, you can customize them as you like, but you cannot set the DAMPER as variable potentiometer, this is the reason that doesn't permit to use the triple pedal accessories 970418 or 970266.

77

Why does not the instrument respond correctly?

Or

Why the initial screen shows a different model at the start-up?

(after CPU Board replacing only)

The CPU board spare part supplied by Generalmusic have the wrong OS stored on its memory. Before re-loading the right operating system you must erase the old, to do this follow the instructions below:1- Prepare an OS disk with the same OS contained on the CPU Board (the version is insignificant, if you have already one use it).2- Begin the procedure of re-loading OS and after about half minute and before the end of loading: press the EJECT button and extract the OS disk, now the OS stored in memory is insubstantial and the CPU board is capable to load a new one.3- Turn off the instrument and proceed to load the right OS as described above.

88Why does the instrument not respond to any controls while the display shows the regular initial screen?

The communication inside the instrument between the CPU, Controls and Keyboard boards are in ring mode: if the ring is interrupted the instrument doesn't work, check each board and the connections between them.

WK6-8 and SK760-880 series FAQ99

Why do I hear some noise after I have connected the instrument to a MAC computer using the serial port?

The older Controls & Midi I/O board have the pin 8 of S11 socket shorted to GND, this cause a problem with some MAC computers, to solve the problem disconnect this pin (you can also operate this cut on the cable).

1010

Why is the battery level (Edit / General / Battery & Rel.) always low?orWhy does the display shows this warning message: "Warning!! Battery almost discharged, recharge the battery"?

After a long period of inactivity may be occur that the internal battery backup have not a sufficient time for re-charging during the normal activity, try to leavethe instrument switched on for about 12-14 hours.

1111Why does the display shows this warning message: "Battery completely discharged instrument re-initialized"?

After a long period of inactivity may be occur that the internal battery is completely dis-charged, try to leave the instrument switched on for about 12-14hours. Afterwards if the instrument will lost the data again, replace the battery.

1212Why does the instrument have an excessive noise on its outputs?(Vocal processor installed)

Check the MIC1 and 2 GAIN inputs setting, reduce the gain, equalize as flat as possible or mute these inputs in the appropriate screen. Many times the poor quality or the low signal of a microphone affect the S/N ratio.

1313Why does the instrument plays regurarly but the display is obscured with the backlight on?

Most probably the fault is in the contrast circuit of the LCD, in this instrument the contrast circuit is complex and pass through many boards, check it path entirely following the schematics.

1414In some live stages the instrument is noisy, Why?

The instrument is manufactured to satisfy all International Safety, EMC and RFI standards. To ensure these the instrument must be connected always to the Earth-Ground (via Mains Socket). An eventual bad connection to the ground, as could be happen in some situation, can get worse S/N ratio and RFI influence: check always to have a good connection to the ground on all stages the instrument plays.