5
14. Set "Buzz" Amplitude ........................................................................48
15. Set "Buzz" Point ...................................................................................49
16. Select Range .......................................................................................... 50
17. Zero Calibration ..................................................................................... 51
Using the RS-232 port ...................................................................................51
Standards and Quality Control ................................52
Repeatability and accuracy ........................................................................52
Standards and controls ................................................................................52
Maintenance of standards ...........................................................................53
Quality control implementation ................................................................53
Calibration .....................................................................55
Calibration procedure ...................................................................................55
Calibration notes .............................................................................................57
Troubleshooting and Service ....................................58
Service and maintenance cautions ......................................................... 58
Obtaining service ...........................................................................................60
To return an instrument for repair or replacement: ...................... 61
Routine maintenance ................................................................................... 62
Shutdown and storage ................................................................................ 62
Troubleshooting checks .............................................................................. 63
Internal diagnostic tests .............................................................................. 64
1. Statistics ..................................................................................................... 65
2. Recall results ...........................................................................................66
3. A/D Tests ..................................................................................................66
4. Stir/Freeze Test ...................................................................................... 68
5. Probe Bin Test .........................................................................................68
7. Display/Print Test ................................................................................... 70
8. Beeper Test ..............................................................................................70
9. Keypad Test .............................................................................................70
10. Head Up/Down Test ........................................................................... 71
11. Event Record ........................................................................................... 71
Fuse replacement ............................................................................................71
Sample probe checks and replacement ................................................73
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