Teledyne 3000PA operating instructions Major Internal Components, Power, Analog, Preamp

Percent Oxygen Analyzer Maintenance 5

Table 5-1: Self Test Failure Codes

Power

0OK

15 V Failure

215 V Failure

3Both Failed

Analog

0OK

1DAC A (0–1 V Concentration)

2DAC B (0–1 V Range ID)

3Both Failed

Preamp

0OK

1Zero too high

2Amplifier output doesn't match test input

3Both Failed

5.5Major Internal Components

The Micro-Fuel cell is accessed by unlatching and swinging open the front panel, as described earlier. Other internal components are accessed by removing the rear panel and sliding out the entire chassis. See Figure 5-4, below. The gas piping is illustrated in Figure 2-4, and the major electronic components locations are shown in Figure 2-5, in chapter 2.

WARNINGS: See warnings on the title page of this manual.

The 3000PA contains the following major components:

• Analysis Section

Micro Fuel Cell (B-1 standard—others available)

Nylon Probe and Holder

Sample System

•Power Supply

•Microprocessor

•Displays

5 digit LED meter

2 line, 20 character, alphanumeric, VFD display

•RS-232 Communications Port.

See the drawings in the Drawings section in back of this manual for details.

Teledyne Analytical Instruments 5-7