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 ú ú 05 Page 533 ú Mar 12/02

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (n)  
Put the first officer's AUTO/MAN switch in the AUTO position.

 (o)  
Make sure that an A replaces the M between LSK 6L and LSK 6R on the CDU.

 (p)  
Make sure that a local NAV AID station identifier and frequency follows the A on the CDU.

 (q)  
Put the Captain's AUTO/MAN switch to the MAN position.

 (r)  
Put the First Officer's AUTO/MAN switch to the MAN position.

 (s)  
Push the INIT REF key on the CDU front panel.

 H. Put the Airplane Back to Its Usual Condition
 S 845-124
 (1)  
If the IRS is not necessary, set the mode select switches on the IRS MSU to the OFF position.

 (2)
Remove electrical power if it is not necessary (Ref 24-22-00/201).

 S 865-123
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 ú ú 05 Page 534 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 FMCS CONTROL DISPLAY UNIT - MAINTENANCE PRACTICES
_________________________________________________
 1.  General (Fig. 201)_______
 A.  This procedure contains four tasks. The first task is the cleaning of the FMCS Control Display Units (CDU) cooling vent and surfaces. The second task is the cleaning of the CDU display. The third task is the removal of the CDU keyboard. The fourth task is the installation of the CDU keyboard.
 B.  You can find the CDU(s) in the flight compartment on the forward electronic panel, P9. You can replace the lighted switch panel (keyboard) when one of the keys do not operate.
 TASK 34-62-11-102-001
 2.  FMCS CDU Cooling Vent and Surfaces Cleaning (Fig. 201)___________________________________________
 A.  Consumable Material
 (1) Liqui-Nox (21837-005) - Liquid Detergent (Ref 20-30-31/201).
 B.  References
 (1)  
20-30-31/201, Cleaners Polishes

 (2)  
34-62-11/401, FMCS CDU

 C.  Access
 (1)  Location Zones
 101 Control Cabin - Left
 102 Control Cabin - Right

 D.  CDU Cooling Vent and Surfaces Cleaning
 S 032-002
 (1)  
Remove the CDU (Ref 34-62-11/401).

 S 142-024

 (2)  
Clean the cooling vent:

 (a)  
Use a vacuum source to remove blockage from the air inlet and outlet holes on the CDU.

 (b)  
Clean the grilles with a paper towel or soft cloth moist with Liqui-Nox detergent and water.

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 ALL  ú ú 01 Page 201 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
CAPTIVE SCREWS (6)
LIGHTED SWITCH PANEL
Control Display Unit - Lighted Switch Panel Replacement
Figure 201

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 ALL  ú ú 01 Page 202 ú Feb 25/85
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (c)  
Dry the grilles with a soft, clean cloth.

 (d)  
Use a vacuum source to remove blockage from the air outlet hole below the Pilot's Forward Electronic Panel (P9).

 S 162-004
 (3)  Clean the CDU surfaces as follows:
 (a)  
Remove dust and dirt with a vacuum source.

 (b)  
Clean the surfaces with a paper towel or soft cloth moist with Liqui-Nox detergent and water.

 (c)  
　
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