K2 Cartridge Drive Exerciser - HP 9845B/C CE Handbook

5-8 9845B/C Diagnostics
k2 Cartridge Drive Exerciser
Y Test Mode
CAUTION
DO NOT USE THE 9845B/C TEST BINARY TAPE FOR THE
READ, WRITE, MOTOR DRIVE, OR TAPE LOGIC TESTS. USE A
SCRATCH TAPE.
CRT displays TEST?
To write data on the blank tape cartridge, press these keys:
CRT displays
ENTER PATTERN FROM KEYBOARD
On math keys, enter a 6 digit octal number, 000000 thru 177777.
Tape rewind, starts continuous writing on one track, erasing previously recorded
data. At end of track, tape stops, but can be stopped at any time by pressing
Stops writing data and stops tape movement.
To read data from the same tape, press these keys:
Tape rewinds, reads data, CRT displays this message:
LOW THRESHOLD READ OATA=OOOOOO
wherein the D's should be the
octal pattern used in the write test. If the write test was stopped before the entire
track was written on, the octal pattern should change at the place the
CTI
test
was stopped at. To change read thresh hold to high, press
CKJ.
Data read
should be the same for both thresh holds.
Ends the read and tape drive operations and the CRT displays TEST?, you may
press another letter key to repeat or start a new test.
Motor Drive Tests:
CAUTION
THIS TEST CAN UNSPOOL THE TAPE, EOT/BOT DETECTION
IS NOT USED. BE CAREFUL AND FOLLOW THESE DIREC-
TIONS.
Use the above read or write test to position the tape in the center of the track, each spool should
have the same amount of tape. Read the following directions through once before you actually
perform the test.
Press the following keys to perform the tape drive test:
Note
Pressing the HOME or STOP keys will stop the motor.