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V/F BOARD SWITCH SETTINGS - RANGES FOR ANALOG OUTPUT
User Set Switches
Switch 100 mV
Full Scale
1 V
Full Scale
5 V
Full Scale
10 V
Full Scale
S1 (Recorder Output) 1, 6 1, 5 1, 4 1, 3
S2 (DAS Output) 1, 6 1, 5 1, 4 1, 3
S3 (Test Output 1, 6, 7 1, 5, 7 1, 4, 7 1, 3, 7
S4 (Spare) 1, 6, 7 1, 5, 7 1, 4, 7 1, 3, 7
TABLE 10.4
3. If Voltages and Jumper settings are correct, the V/F card is faulty and
should be replaced.
10.6.4 Checking the DC power supply board
A schematic and physical diagram of the DC Power Supply Board are shown on
Drawings 015 and 016 in Appendix C.
The overall performance of the DC Power Supply Board can be checked by observing the
value of the DCPS test functions. If this value, a composite of five regulator value
recorded in Table 1-1 of this manual under Test Values, the outputs of the individual
regulators should be checked by measuring for the following voltages:
1. Remove Plugs J8, J6, and J13 from the front of the Power Supply Module.
Verify that the following voltages are present:
• +24VDC between J8 pins 2 and 4
• +24VDC between J6 pins 12 and 13
• 25VAC between J13 pins 4 and 5
• 15VAC between J13 pins 3 and 2
• 38VAC between J13 pins 6 and 7
If any of these voltages is not present, the Power Supply Module is
defective and should be replaced.
2. Confirm that the following voltages are present on the V/F Board:
• +5V between V/F TP 4 and V/F TP 5
• +15V between V/F TP 1 and V/F TP 3
• -15V between V/F TP 2 and V/F TP 3
• +12V between Mother Board Pad J13,6 and J13,7
If any of these voltages is incorrect, it is probable that the DC Power
Supply Board is faulty and should be replaced.
Four Temperature linearization circuits are contained on the DC Power Supply board. The
outputs of these circuits can be checked by measuring the voltages at test points on the
board as follows:
P/N 02163G1 Teledyne API Model 300 CO Analyzer Instruction Manual - Page 95