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IntrLogic Test Points
and Jumpers (cont.)
IntrLogic: Board Test
Function
How to Enter Test Mode
Test 0 (9356 Test)
Thermo Scientific
Table 7-3. Jumpers
Jumper
Position
JP1
1-2 Short: 50Hz filter 2-3 Short: 60 Hz Filter
1-2 Short: 256k EPROM in U19 2-3 Short: 512k
JP2
EPROM in U19
1-2 Short: Telemetry Mode 2-3 Short (OR NO
JP3
JUMPER) : RS485 Mode
The interface looks the same between display types. For example, a 7219
based display and the Noritake vacuum fluorescent display have the same
common output for feedback to the user. There may be up to 16 different
tests numbered 0 to 15 and will be output as (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A,
b, c, d, E, F) OR (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15).
There are three types of messages: 1) Test Passed, 2) Test Failed, and 3)
User Intervention required. The message format is as follows: Test Passed:
Step # P Example: "1 P" Test Failed: Step # F. Example: "A F" User
Intervention: Step # U. Example: "7 U".
Board test mode may be entered by simultaneously holding down the
increment (up arrow), decrement (down arrow), and mode/mute button,
then turning the key to one of the On positions. The user should hold
these buttons for approximately 10 seconds, then release.
Note This changes slightly as on some displays it is indicated by the screen
going blank.
s
After releasing the buttons, the user will see the result of Test 0. The tests
progress as the user presses the mode/mute button and upon reaching the
last test, the first test is re-executed.
Note Normal operation will NEVER return until the key is cycled OFF
again.
s
This test simply writes a byte of data (0xA5) to a non-volatile memory
address (0xF0) within the 9356 IC. Next, the location is read to a local
RAM to ensure proper operation of the 9356. On success, the display
shows "0 P"; on fail, "0 F."
Section 8
Appendices
Description
ADC LTC2408 Filter
U19 chip size
Communications mode
Midi 40 CO2 Incubator
8-3
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Troubleshooting
