Brother LH4-B800E Service Manual download pdf (Page 134)

LH4-B800E 6 - 1

6. ELECTRIC MECHANISM

6-1. Precautions at the time of adjustment

Pay attention to the following when opening the control box for maintenance.

■ Electric shock

Some large capacitors may have a high voltage remaining in them for up to 5 minutes after the power is turned off.

To prevent electric shock, wait at least 5 minutes after the power is turned off before doing the following:

• Opening and closing the control box

• Replacing fuses

• Separating and joining connectors

• Measuring resistance

• Doing anything with a possibility of touching something inside the control box

Some adjustments require measuring the voltage while the power is turned on with the control box kept open.

In such a case, be careful not to touch any place other than that for the measurement. In addition, always keep in

mind that a high voltage remains for 5 minutes after the power is turned off.

■ Injury

While the power is turned on, the cooling fan of the control box operates; be careful not to get caught in it.

When separating or rejoining connectors, and measuring something, be careful not to cut your fingers on metal

parts such as heatsinks and covers.

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Brother LH4-B800E Service Manual Page 134