Customer Engineering Training - Control Data Corporation CDC CC63X Hardware Maintenance Manual

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Since it is difficult to determine all possible display terminal
applications, this manual covers only on-site maintenance for the
display terminal in its basic and expanded configurations as
indicated in figures 1-1 and 1-2. That is, the maintenance
information contained in this manual covers the basic ,terminal,
the graphics board with touchpanel, and the internal modem. The
maintenance of any other hardware, software, or firmware added to
or used with the terminal is covered in their respective
maintenance manuals.
The memory of the terminal iucludes 20K bytes of ROM and 64K
bytes of RAM plus any ROM pack that may be inserted. The 20K
bytes of ROM contains the resident CYBER mode as well as programs
that perform self-testing of the terminal hardware by resident
diagnostics. The ROM pack allows a program tO'be loaded into the
tenninal.
Operating parameters are loaded through the keyboard. The para-
meters are stored in a nonvolatile memory (NVM) , which will
retain this infonnation after the terminal is turned off or
unplugged (the NVM is battery-supported). The resident ROM
contains subroutines that allow qualified personnel to change the
stored parameters, when necessary.
CUSTOMER ENGINEERING TRAINING
In addition to providing display terminal maintenance informa-
tion, this manual will also serve as the only maintenance
training document. Due to a low piece-part count, internal
diagnostics and modular construction, there is no display ter-
minal classroom instruction offered. By reading and using this
manual, the CE will acquire the expertise to isolate display
terminal malfunctions. section 6 lists the main tasks a' CE must
be able to perform before responding to a customer request for
maintenance on the terminal.
The CC63X display terminal training course consists of reading
this manual and taking a final test found on Engineering Ser-
vices Educations PLM. This test covers the following objectives:
• Locate and list the function of all major assemblies,
components and controls.
• List the steps necessary to initiate, execute and termi-
nate the resident diagnostic tests.
• List the field-replaceable units (as specified by the SAM
listings) for terminal malfunctions.
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