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 (c)  Set the ARINC 429 bus reader to these parameters:
 Octal Label:  207
 SDI: Display:  2 (Bit 10=1, Bit 9=0)Engineering Units
 (d)  1) Make sure the bus reader shows a VMO of 327 knots.Disconnect the ARINC 429 bus reader from the C ADC front panel TEST ONLY connector.
 (e)  Set the AIR DATA switch on the first officer's SOURCE SELECT module to the R position.

 S 725-749
 (21) Do these steps to use the left CDU and the Central Maintenance Computer (CMC) to do a test of the spare engine message status (Ref 45-10-00/201):
 (a) Push the IDENT key.
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 (b)  
Make sure the spare engine message shows ACTIVE> on the CDU.

 (c)  
Set the fifth engine carriage switch to the NORMAL VMO position.

 (d)  
Make sure the spare engine message does not show ACTIVE> on the CDU.

 S 425-186
 (22) Install a safety wire on the fifth engine carriage switch
 (Ref 20-11-28/401).

 L. Probe Heat Interface Test
 S 865-328
 (1)  Open these circuit breakers and attach DO-NOT-CLOSE tags:
 (a)  P6 Main Power Distribution Panel
 1) 6B17, WINDOW HEAT 1R
 2) 6B34, WINDOW HEAT 1L
 3) 6E28, WINDOW HEAT PWR 2L & 3R
 4) 6E29, WINDOW HEAT IND 2L & 3R
 5) 6E30, WINDOW HEAT PWR 2R & 3L
 6) 6E31, WINDOW HEAT IND 2R & 3L

 S 865-329
 (2)  Do these steps to use the left CDU and the Central Maintenance Computer (CMC) to prepare for a test of the probe heat interfaces (Ref 45-10-00/201):
 (a)  
Push the MENU key.

 (b)  
Push the LSK that is adjacent to <CMC on the menu.

 (c)  
Push the LSK that is adjacent to <GROUND TESTS on the CMC MAIN MENU.

 (d)  
Push the LSK that is adjacent to <30 PROBE HEAT on the GROUND TESTS SYSTEMS menu.

 S 485-214
 (3)  Connect an ARINC 429 bus reader to the L ADC front panel TEST ONLY connector.
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 (4)  S 865-810Set the ARINC 429 bus reader to these parameters:
 Octal Label: SDI: Display:  2701 (Bit 10=0, Bit 9=1)Binary
 (a)  Make sure bits 14, 15, 16, 17, and 18 of label 270 are in the zero state.
 (5)  S 865-811Close the 6D30 PROBE HEAT PITOT L, 6D34 PROBE HEAT IND L, and 6D35 PROBE HEAT IND R circuit breakers on the P6 Main Power Distribution Panel.
 (6)  S 725-217Push the LSK that is adjacent to <PROBE HEAT L on the GROUND TESTS MENU. (a) Make sure bit 14 of label 270 is momentarily in the one state.
 (7)  S 865-314Open the 6D30 PROBE HEAT PITOT L circuit breaker on the P6 Main Power Distribution Panel.
 (8)  S 865-316Close the 6D33 PROBE HEAT AUX PITOT R circuit breaker on the P6 Main Power Distribution Panel.
 (9)  S 725-220Push the LSK that is adjacent to <PROBE HEAT R on the GROUND TESTS MENU. (a) Make sure bit 15 of label 270 is momentarily in the one state.
 S 865-E07

 (10) Open the 6D33 PROBE HEAT AUX PITOT R circuit breaker on the P6 Main Power Distribution Panel.
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 S 865-225
 (11)
 Close the 6C33 AOA HEAT L circuit breaker on the P6 Main Power Distribution Panel.

　
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