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6.2.4 If an error message is displayed, remove the test cuvette and examine the

sample and waste channels. Verify that the waste channel has sample travel

that is approximately 75% of the distance between the reservoir and the other

end of the cuvette. Also verify that the sample channel contains a sample

segment that is approximately one inch long.

If either channel is not filled, the corresponding motors or pumps should be

replaced per sections 7.0, 8.3, 8.4, 8.5, 9.0 and 10.0, if inspection of the hoses and

seals reveals no leakage.

6.3 Check Switch Keypad (Overlay)

Check the switch keypad by exercising all switches and monitoring for the correct

display. For this test you will need an unused test cuvette.

See Figure 1. This procedure is not applicable to Jr.II

Procedure:

6.3.1 Insert the test cuvette with the blood reservoir facing up.

6.3.2 Press “ID” then “1” and then “1” (PID).

6.3.3 Enter “0” through “9” via key switches and verify the entry via the display.

Press CANCEL.

6.3.4 Press the “QC” button and the display will indicate “QC SELECTS”, then

press the “CANCEL” button to cancel entry.

6.3.5 Press the “DATA BASE” button and the display will indicate “DB SELECTS”,

then press the “CANCEL” button to cancel entry.

If any of the key switches/buttons are intermittently or permanently non-functional

remove and replace the Keypad Overlay/Top Cover Assembly per sections 7.1, 9.0

and 10.0

HEMOCHRON

Jr. Signature Service Manual 8

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ITC HEMOCHRON Jr. Signature Specifications

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