(10)
 Turn the rudder trim switch on the P8 panel until the trim indicator shows zero units of trim.

 S 045-163

 (11)
 Stop for 5 seconds.

 S 215-164

 (12)
 Do these steps to do a check of the RRCM maintenance indication:

 (a)  
Move the EICAS computer select switch on the P9 panel to R.

 (b)  
Open these circuit breakers on the P11 panel and attach DO-NOT-CLOSE tags: 1) 11C6, CSEU 1L AC

 or FLT CONT ELEC 1L AC 2) 11C7, CSEU 1L DC
 or FLT CONT ELEC 1L DC 3) 11C8, CSEU 2L AC
 or FLT CONT ELEC 2L AC 4) 11C9, CSEU 2L DC
 or FLT CONT ELEC 2L DC 5) 11D18 or 11G10, RUDDER RATIO 6) 11G17, CSEU 1R AC
 or FLT CONT ELEC 1R AC 7) 11G18, CSEU 1R DC or FLT CONT ELEC 1R DC 8) 11G27, CSEU 2R AC or FLT CONT ELEC 2R AC 9) 11G28, CSEU 2R DC or FLT CONT ELEC 2R DC
 (c)  
Remove the right RRCM (AMM 27-09-00/201).

 (d)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel: 1) 11C6, CSEU 1L AC

 or FLT CONT ELEC 1L AC 2) 11C7, CSEU 1L DC or FLT CONT ELEC 1L DC 3) 11C8, CSEU 2L AC or FLT CONT ELEC 2L AC 4) 11C9, CSEU 2L DC or FLT CONT ELEC 2L DC 5) 11D18 or 11G10, RUDDER RATIO
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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(f)

(g)

(h)

(i)

(j)

(k)

(l)

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Stop for 31 seconds, then push the ECS/MSG switch on the P61 panel and do these checks: 1) Make sure the white RUDDER RATIO message comes into view on
 the bottom EICAS display. 2) Make sure all the faultballs on the left RRCM are black. 3) Make sure the amber rudder ratio light on the P5 panel is
 OFF.Open these circuit breakers on the P11 panel and attach DO-NOT-CLOSE tags: 1) 11C6, CSEU 1L AC
 or FLT CONT ELEC 1L AC 2) 11C7, CSEU 1L DC or FLT CONT ELEC 1L DC 3) 11C8, CSEU 2L AC or FLT CONT ELEC 2L AC 4) 11C9, CSEU 2L DC
 or FLT CONT ELEC 2L DC 5) 11D18 or 11G10, RUDDER RATIOInstall the right RRCM and remove the left RRCM (AMM 27-09-00/201).Move the EICAS computer select switch on the P9 panel to L.Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel: 1) 11D18 or 11G10, RUDDER RATIO 2) 11G17, CSEU 1R AC
 or FLT CONT ELEC 1R AC 3) 11G18, CSEU 1R DC or FLT CONT ELEC 1R DC 4) 11G27, CSEU 2R AC or FLT CONT ELEC 2R AC 5) 11G28, CSEU 2R DC
 or FLT CONT ELEC 2R DCStop for 31 seconds, then push the ECS/MSG switch on the P61 panel and do these checks: 1) Make sure a white RUDDER RATIO message comes into view on
 the bottom EICAS display. 2) Make sure all the faultballs on the right RRCM are black.Make sure the amber rudder ratio light on the P5 panel is OFF.Open this circuit breaker on the P11 panel and attach a DO-NOT-CLOSE tag: 1) 11D18 or 11G10, RUDDER RATIOInstall the left RRCM (AMM 27-09-00/201).Move the EICAS computer select switch on the P9 panel to AUTO.Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel: 1) 11C6, CSEU 1L AC
 or FLT CONT ELEC 1L AC 2) 11C7, CSEU 1L DC or FLT CONT ELEC 1L DC 3) 11C8, CSEU 2L AC or FLT CONT ELEC 2L AC
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 4) 11C9, CSEU 2L DC
 or FLT CONT ELEC 2L DC
 5) 11D18 or 11G10, RUDDER RATIO

 (p)  Make sure the white RUDDER RATIO message cannot be seen on the bottom EICAS display.
 S 215-165
 (13)
 Do these steps to do a check on the power supply interface:

 (a)
Make sure the amber RUDDER RATIO light on the P5 panel is OFF.

 (b)
Push the ECS/MSG switch on the P61 panel and do this check:

 1)  Make sure the RUDDER RATIO, L FLT CONT ELEC, or R FLT CONT ELEC messages can not be seen on the bottom EICAS display.
　
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