Canon TX-20 Full Auto Tonometer 手册

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This section outlines the maintenance instructions for the TX-20: daily inspection, cleaning, 
disinfecting, and refilling chin rest paper.

•  For safety reason, before using the TX-20, be sure to perform the daily inspection.

•  Have a periodically inspection performed for the TX-20 at least once a year by  a Canon 

designated representative to maintain its performance and reliability.

Perform the following inspections before using the TX-20 to ensure that it is used safely and correctly. 
If a problem is found during the inspection and you are unable to correct the problem, please contact 
your sales representative or local Canon dealer.

Check the following items before turning on the power. 

1)  The power cord and connection cable are not damaged and their insulation is not torn. 
2)  The power cord is fully and securely inserted into the AC connector on the main unit and the AC 

outlet. 

1)  There are no scratches or dirt on the nozzle and objective lens. Clean the nozzle and objective 

lens if they are dirty (see page 72). 

2)  There is no dirt on the monitor. Clean the monitor if it is dirty.
3)  The forehead rest is disinfected (see page 73).
4)  The chin rest paper is loaded (see page 74).
 

If the chin rest paper is not being used, disinfect the chin rest (see page 73).

5)  The printing paper is loaded (see page 74).
6)  The covers and other parts are neither damaged nor loose.

Check the following items after turning on the power. 

1)  The power lamp lights. 
2)  The chin rest moves up and down smoothly as the CHIN REST button is pressed. 
3)  The measurement unit moves smoothly in all directions (forward, back, left, right, up, and down) 

as the operation lever and the measurement unit vertical movement ring are operated.

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