Hardware; Hardware Structure - Clavia nord lead 2X Service Manual

Hardware

Hardware structure

The hardware is common for all four Nord 2/2X products: one power supply unit, one
main board and one panel board.
Power supply
The Nord Lead 2X 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
Nord Lead 2
The main board is equipped with four DSPs U6-U8, U22 which are controlled by a host
processor U4 with two RAM circuits U2 and U3 (128k*8 bits) where programs and
performances are stored. Boot code for the host processor and OS is stored in the
BootPROM U9 (512k*8 bits). Various other information, for example some user settings
are stored in an EEPROM U10 (512k*8). The user program memory can be expanded
with a 64kB SRAM based PCMCIA card. Larger cards can be used but only 64 kB can
be addressed. Audio D/A conversion is done by U15 and U17. A/D conversion of the
control pedal takes place on the panel board (see schematic for details).
All input and output jacks are filtered from radio signals with an EMI-filter.
External connectors are a 10 pole connector for the power supply unit, a 20 pole
connector for the panel board and two keyboard connectors.
Nord Lead 2X
The main board is equipped with two DSPs U2 and U3 which are controlled by a
(21360)
host processor U5 with two RAM circuits U6 and U7 (128k*8 bits) where
(21320) (21410)
programs and performances are stored. Boot code for the host processor and OS is
stored in the BootPROM U9 (512k*8 bits).
(23710)
Audio D/A conversion is done by U13 and U17 (24 bit 96kHz).
(23430)
A/D conversion of the control pedal takes place on the panel board
(see schematic for details). All input and output jacks are filtered from radio signals with
an EMI-filter. External connectors are a 10 pole connector for the power supply unit P4
, a 20 pole connector for the panel board P3 (22500) and two keyboard
(22480)
connectors P1 and P2 .
(22670)
Panel Board
On the panel board you will find all control functions of the Nord Lead 2/2X. The panel
board is connected to the main board with a 20 pole connector P1 . The main
(22500)
characteristics are main LED display , pitch stick and Mod wheel.
(20780) (10190)
Lead /rack 2 panel board has hole mounted components.
Clavia DMI Service manual Nord Lead 2x rev. 1.1 Page 6