Kurzweil K2600 Series User Manual

Diagnostics
Description of Tests
2-5
RAM/PRAM
Caution : This test destroys all non-volatile user RAM! If you haven’t already saved user data,
power cycle the unit and save the data now. If you need instructions, refer to Saving User Data on
page 5-2.
The RAM/PRAM test performs a data test and an address test on each of the processor RAM
sections. These sections include volatile RAM at addresses 0x2100000 through 0x213FFFF and
the non-volatile RAM at addresses 0x02000000 through 0x0203FFFF.
Figure 2-5 LCD example, RAM/PRAM test
If the PRAM optional expansion non-volatile RAM is installed, this test checks addresses
0x01F00000 through 0x01FFFFFF. After the volatile and non-volatile RAM is tested, the message
PRAM Present
is displayed in the LCD. If the PRAM optional expansion is not installed, the
LCD shows
PRAM Absent
.
The data test phase of this test writes a value derived from a 23-word test sequence to each RAM
location. While the value is in memory, it is bitwise-inverted twice. This should bring the data
back to its original value. The data is then compared with the original data. If a difference is
detected, an error occurs and the test fails.
The address-test phase of this test writes RAM addresses sequentially throughout RAM. The
addresses are then read back. If a difference is detected, an error occurs and the test fails.
A failure of this test may indicate a problem with the RAM or related circuitry.
Note : If a PRAM option is installed and the test fails, remove the optional PRAM Board and
rerun the test.
If the PRAM optional expansion RAM is installed and the LCD shows
PRAM Absent
, be sure
that the PRAM option board is correctly installed. If the LCD doesn’t show
PRAM Present
,
there may be a problem with either the PRAM Board, the Engine Board or related circuitry.
I/O Port
The I/O Port test mutes and unmutes the audio circuitry to verify that the signal is transmitted
correctly.
A failure of this test may indicate a problem with the Engine or DSP Board.
Test Item : RAM/PRAM
PRAM Present
Please wait. Testing...Success
Press any key to continue...

Kurzweil K2600 Series Specifications

General

Polyphony	48 voices
Multitimbral	16 parts
MIDI	In, Out, Thru
Type	Workstation
Synthesis Method	VAST (Variable Architecture Synthesis Technology)
Keyboard	61, 76, or 88 keys
Sequencer	16-track sequencer
Display	LCD
Sampling	Yes, with optional sampling option
Storage	Floppy disk
Audio Outputs	Stereo outputs
Audio Inputs	Stereo inputs