Kurzweil K2000 K2000R SERVICE MANUAL

Page 2

c.

Lechuerndoc 12/22/92

!** IMPORTANT INFORMATION **!

READ THIS PAGE BEFORE PROCEEDING!

THERE ARE NO USER SERVICEABLE COMPONENTS OR ASSEMBLIES INSIDE
THIS INSTRUMENT.

This service manual is written for use by qualified service
personnel only. Possession of this service manual does not
ggalify its owner or user as a competent service technician on
this product.

Any attempts to repair, modify, adjust or service any internal
component or assembly by non-approved personnel may void all
existing warranties on this instrument and any installed options.

only the Kurzweil Service Department has the authority to make
the determination as to who is a qualified technician.

For further information, contact the Kurzweil National Service
Manager at (310) 926-3200.

Page 19

SECTION 2 537mm; mom

Changing System Software (Engine)

NOTE :

The ICI containing the K2000'. software are static sensitive
devices. USE ALL STANDARD ANTI-STATIC PRECAUTIONS WHEN
HANDLING THESE DEVICES!

\IO\

To replace the ICs:

turn the unit off and remove the AC line cord from the AC power
connector.

Open the unit as described in Section 3.

Locate the old software ICs U3 and U6, on the Engine Board
(Figure 2.6 above). Remove the old ICs using an IC puller or
similar tool. Be careful not to damage the traces on the
board.

Carefully insert the new IC labeled "L0" in the socket at U3,
and the new IC labeled "HI" in the socket at U6. Make certain
the ICs are oriented with pin 1 toward the front of the unit.
Pin 1 is on the end of the IC with the indentation.

Inspect for proper installation - make sure the ICs are firmly
seated into the sockets and that none of the pins are bent.
Blose the unit as per the instructions in Section 3.

Always HARD RESET the instrument after changing the software.
Note that all user data in RAM will be erased. A hard reset
can be performed on power-up by pressing and holding the "1",
2" and 3" buttons on the numeric keypad.