Yokogawa Button Operated DX2000 - Manual (Page 68)

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IM 04L42B01-02E
Recommended Replacement Periods for Worn Parts
Maintenance
To preserve the reliability of the DX and to use the DX in a good condition for an
extended time, it is recommended that periodic replacements be made on parts. The
replacement parts may change to accommodate preventive maintenance over extended
time. Be sure to check with your nearest YOKOGAWA dealer.
The following table shows the recommended replacement period for expendable parts.
The replacement period shown here applies when the recorder is used under standard
operating conditions. For the actual replacement period, consider the actual conditions
of use. Replacement of parts will be carried out by a YOKOGAWA engineer or an
engineer certified by YOKOGAWA. Contact your nearest YOKOGAWA dealer when such
replacement is necessary.
Item
Replacement
period
Name Part No.
Quantity
Used
Notes
LCD 5 years Back Light Unit B9968PA 1
Battery 10 years Battery Assembly B9900BR 1
Dust and water
proof strip 5 years Packing B8706FY 1
5 years Key Case Assembly B8706BM 1 English specifications
5 years Key Case Assembly B8706BY 1 Japanese specifications
Aluminum
electrolytic capacitor 5 years* Power Supply Assembly – 1
5 years* AD Assembly Depends on the model
* Replacement period at the upper limit of the normal operating temperature (50°C)
The replacement period varies depending on the operating temperature and the specifications of the DX.
The lower the operating temperature, the longer is the replacement period. For example, if the operating
temperature is 30°C, it may be possible to use the parts for more than 10 years.
Note
• The LCD replacement period indicates the half life of the brightness when the brightness
is set to the factory default setting. The half life is shortened as the brightness is set
higher. The deterioration of brightness varies depending on the condition of use, and its
determination is subjective. Consider these facts for determining the actual replacement
period.
• The color of the LCD may become yellowish as time elapses. The discoloration tends to
progress faster as the brightness is set higher.