Novametrix Medical Systems OXYPLETH 520A, Service Manual

Page: 71 / 133

Test Procedure
5-Jun-01 Model 520A Service Manual
61
PRELIMINARY
14.3.6
Short out capacitor C90 by installing a jumper wire from R59 to R56.
14.3.7
Connect the RS232 test fixture to J101 and the saturation test jack to the
saturation input connector.
14.3.8
Run monitor test 1. Press the Test softkey,
Automatic Test
will appear.
Press the Test softkey again to initiate the test, follow the prompts in each
test and verify each test passes.
Note: A series of auto tests will be performed, if any failures are encoun-
tered the monitor will default to MONITOR TEST 2. Of the list below
only the tests with * next to them are performed in the auto test. Upon
completion of the auto test the monitor will default to MONITOR TEST
2. The following is a list of the monitor tests available;
Test# Description
1
Auto Test
2* RAM Test
3* ROM Test
4* Real Time Clock Test
5* Audio Volume Test
6* Audio Frequency Test
7* RS232 Loopback Test
8 Keyboard Test
9 Mains Test
10* 20 Bit ADC Test
11* 8 Bit ADC Test
12 Display ADC Channels Test
13 515A-> PC Interface Test
14.3.9
Disconnect the jumper wire, the RS232 test fixture, and the saturation test
jack.
14.3.10
Connect the TB500B to the saturation input connector. Set the saturation
to 0 and the attenuation to 5.
Component Side
2471 / 2775 Bd
Front of Unit
Back of Unit