Hot Mock-Up System; Loading The Diagnostic; Using The Diagnostic - Texas Instruments 990 Manual

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945424-9701
2.3.i HOT MOCK-UP SYSTEM. Operating instructions for the hot mock-up system are pro-
vided in the system depot maintenance manual for the appropriate Model 990 series computer.
NOTE
Refer the the manufacturer-supplied user manuals for oscilloscope/
digital multimeter operating procedures.
2.3.2 DIAGNOSTIC. The 911 VDT diagnostic executes under control of the VERBPAC to test
and facilitate fault diagnosis within a Model 911 Video Display Terminal consisting of a
keyboard, a VDT controller, a video display unit and interconnecting cables. If a VDT controller
pwb contains logic for two controllers, the board responds to two CRU base addresses. The
diagnostic must be executed for each controller using the appropriate CRU base address for each
execution.
An error counter records detected failures. Accumulated errors are printed upon conclusion of
each routine. When loop routines (LI, L2, L3, etc.) are executed, the accumulated count is
printed after each pass through a test part. If error messages are suppressed, error counts may be
observed by aborting the current test (depress
"@"
on the keyboard of the interactive device)
and using the Print Error Count (PE) verb.
2.3.2.1 Loading the Diagnostic. Following are procedures for loading the 911 VDT diagnostic
into a hot mock-up system from a Model 733 ASR Data Terminal.
1. Apply power to hot mock-up system.
2. Insert cassette containing 911 VDT diagnostic (part number 2250101-1006) into
~odel
733 ASR Data Terminal cassette transport. Set 733 POWER switch to ON.
3. Set 733 CONT START/STOP switch to STOP.
4. Press 733 REWIND switch for appropriate cassette transport.
5. Set 733 KEYBOARD, PLAYBACK and PRINTER switches to LINE.
6. Set 733 OFF LINE/ON LINE switch to ON LINE.
7. Press 733 LOAD/FF and wait for READY indicator.
8. Set programmer panel key switch to UNLOCK.
9. Press programmer panel LOAD switch.
2.3.2.2 Using the Diagnostic. There are two versions of the performance demonstration test:
one is for the Japanese model; the other is for the United States and European models. Consult
the operating instructions for procedures involving operator interaction during diagnostic testing.
Detailed information about the scope of each test is provided in the program description.
United States and European
Program description - 911 VDT diagnostic part number 2250101-9901
Operating instructions - 911 VDT diagnostic part number 2250101-9920
Japanese Katakana
Program description - 911 VDT diagnostic part number 2250253-9901
Operating instructions -- 911 VDT diagnostic part number 2250253-9920
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Digital Systems Division