2 inspection and maintenance of the converter, 1 replacing fuses, 2 inspection and maintenance of the converter -9 – Yokogawa Integral Oxygen Analyzer ZR202 User Manual

Page 160: 1 replacing fuses -9, Caution

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IM 11M12A01-05E

11-9

11. Inspection and Maintenance

11.2 Inspection and Maintenance of the Converter

The converter does not require routine inspection and maintenance. If the converter does
not work properly, in most cases it probably comes from problems or other causes.

11.2.1 Replacing Fuses

This equipment incorporates a fuse. If the fuse blows out, turn off the equipment power
and replace it in the following procedure.

CAUTION

If a replaced fuse blows out immediately, there may be a problem in the circuit. Check
the circuit carefully to find out why the fuse has blown.

Before removing the electronics, touch the grounded metal part to discharge any static
electricity.

(1) Remove the display cover (Figure 11.5).
(2) Remove the three screws that are located toward you, among the four screws shown

in Figure 11.6. Loosen the remaining one.

(3) Move the electronics up to remove it.

F11.5E.EPS

Cover of Display

F11.6E

SCREW

Figure 11.5 Lock Screw Figure 11.6 Location of Screw

(4) Disconnect the three connectors from the printed-circuit board, as shown in Figure

11.7, by holding the connector housing. Do not pull the leadwire out to remove the
connectors, otherwise, disconnection may result.

(5) Remove the electronics completely to gain access to the fuse on the bottom of the

equipment case (Figure 11.8).

(6) Replace the fuse with a new one.

F11.7E.EPS

F11.8E.EPS

Figure 11.7 Locations of Connectors Figure 11.8 Location of Fuse

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