HP HP-97 - Page 157

e CORVALLIS DIVISION
() P 97-104
SERVICE NOTE
February
2,
1982
Supersedes:
Page 1 of 2
SUBJECT: Further Explanation of Functional Test
(page 3-8 of Service Manual)
The testing of a repaired calculator involves testing as many of the functions
of the calculator as possible. This is accomplished with the three-card test
that was included in the service manual. This service note is intended to
further explain this test. The test consists of four cards:
Test Card 1 (T.C. 1) Blank Card
Test Card 2 (T.C. 2) Test Card 3 (T.C. 3)
The first card is a memory test. It checks all 224 locations of memory to
make sure they can be programmed and executed. It also verifies the card
reader can read cards. The display should read 222.00.
The second card starts a new sequence of tests. After reading T.C. 2, switch
to Program mode and push: SST, BST, F, Delete, LBL, A. This tests the
ability of the calculator to be programmed from the keyboard. After returning
to Run mode, push A . The calculator will run, then flash -7.777777777-77,
and then ask for a card. Feed in the blank card on both sides. The calculator
is writing data onto the card. The calculator will then begin to flash
6.000000000.00. While the display is flashing, read the card that was just
recorded. This tests the ability of the calculator to read a card that was
written by the same calculator.
The display will now flash -1.000000000.00. While the display is flashing,
read T.C. 3. This is a one-sided card that contains data. The flags are also
being tested during these read loops. The test will now continue and the
printer will print out. This tests the ability of the printer to print.
(continued...)
For more information, contact the Service Engineering Manager, Corvallis Division—1000 N.E. Circle Blvd., Corvallis, Oregon 97330
Telephone (503) 757-2000 ¢ TWX # 510-596-0683
Printed in U.S.A.