DR. JOHANNES HEIDENHAIN GmbH
D-8225 Traunreut ‘Tel. (08669) 31-O
SERVICE MANUAL TNC 151/155
Page 25
Kundendienst
Section 2.2.6
Loading the Burn-In test program
(Burn-In test program not already loaded)
1. Connect the Magnetic Tape Cassette Unit (MB 101/102) to the
V.24 socket on the rear of the Control.
2. Prepare the ME unit to down-load the test program to the
Control by inserting the appropriate program cassette (see
list, page 20) and pressing the following buttons:
Fig. 6 Initialization of ME unit
3. Control must now be prepared:
After applying power to the Control, it automatically car-
ries out a memory test. During this time the dialogue
"MEMORY TEST"
will be displayed on the VDU.
Upon completion of this test, the dialogue will be replaced
by
"POWER INTERRUPTED".
The necessary code number for reading in the Burn-In test
program is entered by pressing the following keys:
El-
es oftea 1. lnceeeely to abteia ?a b##&b*s
"CODE NUMBER
a", and then:
flgrrors in entering these numbers can be correcteB+~:I
gsessing jg ).
4. The data transfer is then intiatad by pressing:
irEI
During the loading of the Burn-In test program from the ME
unit, the following dialogue will be displayed:
"POWER INTERRUPTED
EXTERNAL DATA INPUT"
If necessary, the ME unit will first rewind the cassette
tape before transmitting the data, blockwise, to the
Control. Any user-programs already loaded/programmed into
the Control will be unaffected by loading the Bum-In test
program.
5. The Burn-In test program occupies both tracks of the cas-
sette tape. Consequently, when all the data from the first
track has been transferred, the following dialogue will be
displayed:
"EXCHANGE CASSETTE - ME START
EXTERNAL DATA INPUT"
TO complete the data transfer, turn over the cassette and
press the START button on the ME unit. The VDU will again
display the dialogue
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