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757
FAULT ISOLATION/MAINT MANUAL

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Proximity Switch System - Component Location
Figure 102 (Sheet 1)

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757
FAULT ISOLATION/MAINT MANUAL

LOGIC CARD (009) DRIVER CARD (010) LOGIC CARD (011)
PROXIMITY CARD (012)
PROXIMITY CARD (014) 
PROXIMITY CARD (002)  PROXIMITY CARD (015) 
PROXIMITY CARD (003) 
PROXIMITY CARD (004) 
LOGIC CARD (005) 
DRIVER CARD (006) 
DRIVER CARD (007) 
BITE CARD 
NO. 1 
BITE CARD  (REF) 
NO. 2 
(REF) 

HINGE PANEL (REF)
BITE MODULE (008)
SEE C
PROXIMITY SWITCH ELECTRONICS UNIT (PSEU), M162
B FROM SHT 1
BITE MODULE (008) C
Proximity Switch System - Component Location Figure 102 (Sheet 2)

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757 MAINTENANCE MANUAL
 PROXIMITY SWITCH ELECTRONICS UNIT - REMOVAL/INSTALLATION
________________________________________________________
 1.  General_______
 A.  The M162 proximity switch electronics unit (PSEU) is installed on the E3-4 shelf in the main equipment center. The PSEU is attached to a tray and is held in position with two hold-down-extractors (self-locking mechanism). No tools are necessary for the removal or the installation (AMM 20-10-01/401).
 B.  The PSEU contains static sensitive devices. Refer to AMM 20-41-01/201 for the handling procedures.
 TASK 32-09-04-004-001
 2.  Remove the Proximity Switch Electronics Unit____________________________________________
 A.  References
 (1)  
AMM 06-41-00/201, Fuselage (Major Zones 100 and 200) Access Doors and Panels

 (2)  
AMM 20-10-01/401, E/E Rack-Mounted Components

 (3)  
AMM 20-41-01/201, Electrostatic Discharge Sensitive Devices

 (4)  
AMM 32-09-02/201, Air/Ground Relays

 B.  
Access

 (1)  
Location Zones
 119 Main Equipment Center
 211/212 Control Cabin

 (2)  
Access Panel
 119BL Main Equipment Center

 C.  
Prepare for the Removal of the Proximity Switch Electronics Unit (Fig. 401)

 S 044-018
 WARNING: PREPARE THE SAFETY-SENSITIVE SYSTEMS FOR THE AIR MODE BEFORE
_______ YOU OPEN THE AIR/GROUND CIRCUIT BREAKERS. IN THE AIR MODE, MANY OF THE AIRPLANE SYSTEMS CAN OPERATE AND CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
 (1)  
Prepare the safety-sensitive systems for air mode simulation (AMM 32-09-02/201).

 S 864-004

 (2)  
Open these circuit breakers on the overhead circuit breaker panel, P11, and attach DO-NOT-CLOSE tags:

 (a)  
AIRPLANES WITH ETOPS OR WITH TR SYNC LOCKS; 11B29, ENGINES RIGHT T/R IND

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757 MAINTENANCE MANUAL
 (b)  
AIRPLANES WITH ETOPS OR WITH TR SYNC LOCKS;
 11B30, ENGINES RIGHT T/R CONT

 (c)  
AIRPLANES WITH ETOPS OR WITH TR SYNC LOCKS;
 11C19, LANDING GEAR POS 2 ALTN

 (d)  
11C30, LANDING GEAR POS SYS 1

 (e)  
　
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