2-10
Diagnostics
Description of Tests
Sound ROM
The Sound ROM test performs a checksum of each megabyte of Sound ROM. The computed
checksum is compared to the checksum stored in ROM.
The asterisk groups displayed in the LCD change to
PASS
or
FAIL
at the completion of each
sound block test. If a sound block is not installed that portion will fail.
Figure 2-10
LCD example, Sound ROM test
A failure of this test indicates a problem with a Sound ROM or the Engine Board.
Sound RAM
Note
: The length of the testing time to run this test depends on the amount of RAM installed.
The more RAM present, the longer the test time. The test time for each megabyte of RAM is
approximately 20 seconds. It should take approximately 15 minutes to run this test for a unit
with 128M.
This test checks the amount of sound RAM installed and displays the amount found in each
bank in the LCD. The test then writes a bit pattern to each block of sound RAM. The bit pattern
is con
fi
rmed and an inverse of this pattern is written into RAM for con
fi
rmation.
Figure 2-11
LCD example, Sound RAM test
A failure of this test may indicate a problem with the SIMMs, their installation, the Engine
Board, or related circuitry.
Sound ROM Test
Base Pian Orch Cont ROM3 ROM4
Meg 0 **** **** **** **** **** ****
Meg 1 **** **** **** **** **** ****
Meg 2 **** **** **** **** ****
Meg 3 **** **** **** **** ****
Press any key to continue...
Test Item : Sound RAM
Bank 0: 32M Bank 2: 32M
Bank 1: 32M Bank 3: 32M
Please wait. Testing...
Press any key to continue...
Summary of Contents for K2600 Series
Page 4: ......
Page 12: ...Kurzweil K2600 Series Service Manual Contents viii...
Page 30: ...2 12 Diagnostics Description of Tests...
Page 50: ...3 20 K2600R Disassembly Assembly Front Panel Assembly...
Page 86: ...4 36 K2600 K2600X Disassembly Assembly K2600X Keyboard Assembly...
Page 102: ...5 16 Troubleshooting K2600R Interconnect Diagram...
Page 130: ......