Yokogawa Removable Chassis DX1000N - Manual (Page 61)

7-2
SM 04L41B01-01E
7.2 Recommended Replacement Periods for Worn
Parts
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 DX 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.
DX1000/DX1000N
Item
Replacement
period
Name Part No.
Quantity
Used
Notes
LCD 5 years Back Light Unit B8703KB 1
Battery 10 years Battery Assembly B9900BR 1
Dust and
water proof
rubber strip
5 years Packing B8705FY 1
5 years Key Case Assembly B8705BM 1 Without /KB1 or /KB2
5 years Key Case Assembly B8705BY 1 With /KB1 or /KB2
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 temperature in which the instrument
is operated, and the instrument’s specifications. If the instrument is used in a 30°C
environment, it may be operational for 10 years or more.
DX2000
Item
Replacement
period
Name Part No.
Quantity
Used
Notes
LCD 5 years Back Light Unit
B9968PA 1
Before instrument
number S5J402213
2009.
A1048VZ 1
Instrument number
S5J402213 2009 and
later.
Battery 10 years Battery Assembly B9900BR 1
Dust and
water proof
rubber 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 temperature in which the instrument
is operated, and the instrument’s specifications. If the instrument is used in a 30°C
environment, it may be operational for 10 years or more.
Note
• The LCD should be replaced when the brightness of the LCD is reduced by half its original
brightness. The brighter the display, the shorter the “half-life” of the LCD. Reductions in
brightness vary depending on operating conditions, and is a subjective determination. The
actual replacement period should be determined based on these considerations.
• The LCD screen may start to yellow over time. The brighter the screen, the faster such
changes may progress.