HP 7925D Service Manual page 83

7925
Troubleshooting
Table 4-2. Disc Service Unit (DSU) Functions (Continued)
CONTROL/
INDICATOR
FUNCTION
Function NO.8 - Manual Mode (Continued)
c. Indicates position information when Request Position (RQP) command is
selected. Coding for the LED's is as follows:
CO thru C5 - Present sector from servo code.
C6-0
C7- 0
C8, C9, C10, and C11 - Identity of selected head (0 through 8)
C11 thru C15 - Not used
Table 4-3. Flowchart Symbols
SYMBOL
DESCRIPTION
C -----""' )
TERMINATION SYMBOL. This symbol indicates an entry to the flowchart or
an exit from the flowchart.
1---_1
PROCESS SYMBOL. This symbol indicates the execution of a defined opera-
tion.
FLOWLINE SYMBOL. This symbol indicates the logical path to follow in the
flowchart.
OFFPAGE CONNECTOR. This symbol designates entry or exit from a page.
ANNOTATION SYMBOL. This symbol is used for descriptive comment in the
flowchart.
DECISION SYMBOL. This symbol requires a choice of logical paths. This
choice of paths depends on the answer to the question contained in the symbol.
ENTRY
from a page
1~
~ .......Continued from
~Sheet1.
Block A
Go to sheet 2,
block A.
EXIT
from a page
---------~
<>
o
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