Clavia Nord Electro 2 Manual de usuario

SERVICE MANUAL

Clavia DMI Service manual Nord Electro rev. 1.2 Page 1

Table of contents

Overview....................................................................................... 3

Test program................................................................................ 4

Running the test program ........................................................... 4

Error Codes ................................................................................ 7

Hardware ...................................................................................... 8

Hardware structure ..................................................................... 8

Opening the synth....................................................................... 9

Hardware configuration............................................................. 10

Hardware versions.................................................................... 10

Software ..................................................................................... 11

Spare Parts................................................................................. 12

Clavia DMI Service manual Nord Electro rev. 1.2 Page 2

The Nord Electro Service manual is arranged to help our service centers in the best way

possible. However the Nord Electro user manual is a very useful guide, use it as a

reference in addition to this service manual. If you have access to internet you’ll find the

user manual available for download and also a lot of useful information on our website

www.clavia.se

I The information in this service manual is intended for service centers that repair

Clavia products. It may not be copied, reposted, modified, served from other web

pages, made into derivative works or distributed to other sources such as end users or

retailers that do not repair Clavia products.

I In this manual the Nord Electro and Electro 2 will be referred to as Nord Electro

h Important safety information

Dangerous voltage levels are present within the unit.

- Unit should be opened exclusively by qualified service personnel.

- Always disconnect the power supply cord before opening to avoid

electrical shock.

- Components and complete circuitboards may only be put into service when they

are securely fixed in the instrument casing.

Take necessary precautions against ESD before opening the unit.

Revision history

rev. 1.0 - First release

rev. 1.1 - Corrected errors in the H/W description

- Added test program instructions

rev. 1.2 - Layout changes

- Updated Hw / Sw section, overview and test program section

- Added part list

Clavia DMI Service manual Nord Electro rev. 1.2 Page 3

Overview

Product line

There are three different Nord Electro

Models:

- 73 note keyboard version

- 61 note keyboard version

- Rack version

Rack version

61 note keyboard version

73 note keyboard version

Internal memory

The internal sound memory of Nord Electro consists of 6 banks (A-F) holding 8

programs each for a total of 48 programs.

Fuse ratings

Voltage 115 V 230 V

Fuse 300 mA 125 mA

Physical Dimensions

Electro 73

W: 1115 mm

D: 295 mm

H: 95 mm

Weight: 9,4Kg / 20 lbs

Electro 61

W: 900 mm

D: 295 mm

H: 95 mm

Weight: 7,8Kg / 17 lbs

Electro Rack

W: 19”

D: 105mm

H: 4 rack units

Weight: -

Clavia DMI Service manual Nord Electro rev. 1.2 Page 4

Test program

Running the test program

The test program is stored in the BootPROM position U17.

Test program version is shown on the LED display when the test program is initiated.

If BootPROM version is older than 0.20, there is no test program available.

To find out which version that is installed, the Nord Electro needs to be opened.

In order to trace a hardware error easier, each Nord synthesizer has a test program.

This program is primarily used in production in order to test all functions.

The functions provided by the test program allow a quick and easy search for possible

errors in the hardware. Test results are shown on the Electro’s display. If a test is

successful, the display reads ”rd”. If errors are detected, an error code is shown in the

display. The error codes are listed under the section ”Error codes” in this document.

IWARNING: Improper use of the test program can result in malfunctioning of the

synth. It may only be used by qualified service personnel and is not intended for end

users.

In order to execute the different tests on a Nord Electro, press and hold buttons

[ program 1+3+5 ] at power up.

Navigating through the test program

When the test program is started all LEDs and the LED display should be lit.

After finishing each test successfully, the test program jumps forward to the next step.

The active test is shown in the display.

To toggle manually between tests, press [ shift + up ] or [ shift + down ].

Clavia DMI Service manual Nord Electro rev. 1.2 Page 5

88 LEDs and button Test

Press all buttons to switch off the LEDs. Once switched off, they can not be switched on

again without restarting the test. Switching off all LEDs makes the test jump forward to

the next stage.

Hn Knob Test

Turning a knob from fully counter clockwise to fully clockwise should generate a value

between 0 and 7F, respectively. The value is shown in the display. It should change

linearly with the potentiometer travel.

Turning each knob fully counter clockwise to fully clockwise make the test jump forward

to the next stage.

Hb Keyboard Test

Press one key at a time to check its function. If a ”note on” message from that key is

detected, the display counts up one step. When all keys are pressed the test jumps

forward to the next stage.

This test does not report velocity response.

Pd Pedal Test

Connect a sustain pedal to the sustain pedal input, a switch pedal to the Rotor speed

input and a control pedal to the Control pedal input. Pressing and releasing the sustain

pedal should generate values 0 and 7F, shown in the display. This applies to the Rotor

speed input as well. Rocking the control pedal back and forth should generate values

between 0 and 7F, shown in the display.

To make the test jump forward to the next stage, unplug all pedals and then reconnect

and unplug the control pedal.

Clavia DMI Service manual Nord Electro rev. 1.2 Page 6

D1 DAC Test

This test should output a clean sine wave on the left (d1) and right (d2) outputs.

Toggle the output with [ STORE ].

Adjust the volume with the volume knob. If the output is distorted, try adjusting the trim

pots found in the lower left corner of the main board. (Nord Electro main board v1.0)

VR1

Right channel (d2) VR2

Left channel (d1)

Test Program version 0.18 (BootPROM 2.2-06) and never has the possibility to Change

level by pressing [ program 1 ] through [ program 4 ].

Program 1 Program 2 Program 3 Program 4

-80dB -60dB -40dB -20dB

You can change frequency of the sine using the Presence Frequency knob.

INote: The scale printed around the knob is not related the frequency of the sine.

FL FLASH memory Test

IWARNING! The Flash test does not preserve data. This means that if you perform

the Flash test described in this section, data is lost and must be updated.

Press [ shift + octave up + octave down ] to execute Flash test.

In order to erase OS content, press [ shift + octave up + program 5 ]. To verify that the

OS section is empty, press [ program 5 ]. When the test is finished, the display briefly

shows 'rd'.

In order to erase sound data in Flash, press [ shift + octave up + program 1 ]. To

verify that no sound data exists, press [ program 1 ]. The display starts counting up to

99. When the test is finished, the display briefly shows 'rd'.

EP EEPROM Test

The EEPROM test does not alter data in the EEPROM. When the test is finished, the

display briefly shows 'rd'. If the test stops, there are likely errors on either the EEPROM

or surrounding connections

Press [ shift + octave up + octave down ] to execute the EEPROM test.

Clavia DMI Service manual Nord Electro rev. 1.2 Page 7

Error Codes

BootPROM error codes:

E.0 Recv SysEx error (overflow or other low level error)

E.1 Recv begin error (SysEx begin message error)

E.2 Recv data error (SysEx data message error)

E.3 Recv end error (SysEx end message error)

E.4 OS erase error (can't erase OS in Flash)

E.5 OS write error (can't write OS to Flash)

E.6 No OS detected (no OS in Flash)

E.7 OS load error (OS with errors in Flash)

E.8 Flash init error (can't init Flash chip(s))

E.9 Flash unknown (unknown Flash chip(s))

Piano init error codes:

P.1 Invalid or missing file

P.2 Map file main type is invalid

P.3 Invalid file(s)

P.4 Invalid file(s)

P.5 Invalid file(s)

P.6 Invalid or missing file

(Hold [instr. select] at power up to init piano without loading samples.)

USB download error codes:

F.1 Initial USB transfer checksum error.

F.2 Flash Error: Create file error.

F.3 Flash Error: Write file error.

F.4 Communication Error: Data overflow.

F.5 Communication Error: Data underflow.

F.6 Communication Error: Verification error.

F.7 Flash Error: Failed to calculate flash checksum.

F.8 Flash Error: Checksum error.

F.9 Flash Error: Close file error.

F.a USB Error: Internal error.

F.b --- error code not used ---

F.c USB Error: PID encoding error.

F.d USB Error: PID unknown.

F.e USB Error: Unexpected packet.

F.f USB Error: Token CRC error.

F.G USB Error: Data CRC error.

F.h USB Error: USB chip error.

F.J USB Error: Unexpected EOP.

F.n USB Error: Sent/received NAK.

F.o USB Error: Sent stall.

F.P USB Error: Overflow error.

F.r USB Error: Bitstuff error.

F.t USB Error: Invalid data PID.

F.y USB Error: Unknown error.

Clavia DMI Service manual Nord Electro rev. 1.2 Page 8

Hardware

Hardware structure

The hardware structure is common for all three Nord Electro products;

one power supply unit, one main board and one panel board.

Power Supply

The Nord Electro is supplied with several different voltages from the power board.

These are +3.3V, ±5V and ±12V. For more information on where to measure these

voltages see the appropriate schematic.

The Power supply is connected to the main board with a 10 pole connector P2 (22480).

Main Board

The main board is equipped with two DSP´s U6- U7 (21360) which are controlled by a

host processor U8 (21320) with two RAM circuits U9-U10 (21410) (128k*8 bits each).

The boot code and the test program is stored in the boot BootPROM U17 (23700).

OS and sampled sounds (all sounds except organ) are stored in four Flash circuits

U1-U4 or U13-U16 (21400) (4M*16 bits each).

Audio D/A conversion is done by U20 (21600, mnb v2.x-23430). A/D conversion of the

control pedal takes place on the panel board U7 (see panel schematic for details).

All input and output jacks are filtered from radio signals with an EMI-filter (23110, 23100)

(component designator prefix F). External connectors are a 26 pole connector P6 (22520)

for the panel board, a 10 pole connector P8 (22480) for the power supply unit and two

keyboard connectors P1-P2 (P1=22670, P2= 22680).

Panel Board

On the panel board you will find all control functions of the Nord Electro.

The model of the Nord Electro is hardware configured on the panel board.

See section ”Hardware configuration” for details.

The panel board is connected to the main board with a 26 pole connector P1 (22520).

Clavia DMI Service manual Nord Electro rev. 1.2 Page 9

Opening the synth

WARNING: Take necessary precautions against ESD before opening the synth.

Electro 73

Loosen the screws as shown in

the figure (2x40038 + 7x40018).

The two screws on the sides

work as hinges. Lift in the front to

open the top.

Electro 61

Opens similar to the Electro 73

(2x40038 + 6x40018)

Rack version:

Unscrew the 4 panel screws

(40018) Gently slide the top

forward and lift it of.

Picture shows Nord Electro 73

Removing the Power Supply Unit

Loosen the five screws (40262) holding the PSU to the chassis. Loosen the two screws

(40013) on the back panel next to the AC socket. Finally remove the 10 pole ribbon cable

(NE 61/73 - 22390 NERack - 22430) and lift out the PSU.

Removing the Main Board

Loosen the four screws (40262) holding the main board to the chassis. Loosen the nuts

and remove the washers around the ¼” jacks on the back panel. Also loosen the four

screws (40010) holding the MIDI jacks to the chassis. Remove the 26 pole ribbon cable

(22410) to the panel board, the 10 pole ribbon cable (22390) to the PSU and the two

ribbon cables to the keyboard (P1-22420, P2-22290). You can now lift out the main board.

Removing the Panel Board

Pull off all knobs on the front panel (not the buttons). Remove the ribbon cable (22410)

from the panel board. Loosen the last two screws (40038) holding the top to the chassis.

Loosen the nine screws (40262) holding the panel board to the upper lid.

You can now lift out the panel board.

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