OPTIONAL CPU RAM
TESTU29?
TESTU44?
TEST
U28?
TESTU43?
NOTE:
U26, U41, U25 AND U40 ARE
SAMPLING
EPROMS ON REV. B CPU BOARDS IF SAMPLING IS INSTALLED.
THESE LOCATIONS WILL FAIL THE DIAGNOSTICS.
TEST
U26?
TEST U41?
TESTU25?
TEST U40?
The next prompt after the
RAM
tests
is:
TEST
CPU
ROM? Press
YES
ALL
CPU
ROM? Press
YES
The CHECKSUM for each
EPROM
will be displayed
on
the LCD.
The CHECKSUMs are for the following EPROMs:
U38
(DIAGNOSTIC
EPROM)
U54
(DIAGNOSTIC
EPROM)
U37
U53
U36
U52
U35
U51
NOTE:
The CHECKSUMS for the EPROMs are displayed and
should be compared with the
CHECKSUMS located
on
each
EPROM
label.
Kurzwell 250 Service Manual, Chapter 4
4-13
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