(c)
Put all the hand microphones back in their holders.
(d)
Put the oxygen masks back in their boxes.
(6)
Remove electrical power if it is not necessary (Ref 24-22-00/201).
S 865-033
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23-51-00
ALL ú ú 02 Page 506 ú Jul 12/00
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A
737-300/400/500MAINTENANCE MANUAL
REMOTE ELECTRONICS UNIT - REMOVAL/INSTALLATION
______________________________________________
1. General
_______
A. This procedure contains these tasks:
(1)
The removal of the Remote Electronics Unit (REU).
(2)
The installation of the REU which contains an operational test of the installed REU.
B. The REU is located on the E2-1 shelf in the Electronics Equipment Compartment. The REU is an electrostatic discharge sensitive device, a precaution method must be used when you replace the REU.
C. The front panel of the REU contains several screw adjustments. These are designed for in-shop test station adjustment only and should not be adjusted on the airplane.
TASK 23-51-11-024-000
2. Remote Electronics Unit Removal
_______________________________
A. References
(1)
AMM 20-10-07/201, Electrical/Electronic Black Box
(2)
AMM 20-40-12/201, Electrostatic Discharge Sensitive Devices
B. Access
(1) Location Zone
205 Electronic Compartment
C. Procedure
S 864-002
(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P6 Load Control Center - Right
1) C83, CAPT AUDIO
2) C84, INPH AND WARN
3) C85, OBS AUDIO
4) C86, F/O AUDIO
5) C239, CAPT NO. 2 INTPH PWR
6) C240, CAPT BAT INTPH PWR
7) C560, F/O NO. 2 INTPH PWR
8) C561, F/O BAT INTPH PWR
S 914-015
CAUTION: DO NOT TOUCH THE REU BEFORE YOU DO THE PROCEDURE FOR DEVICES
_______ THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE REU.
(2)
Do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-40-12/201).
S 024-003
(3)
Remove the REU from the E2-1 shelf in the Electronics Equipment Compartment (AMM 20-10-07/201).
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AUDIO CONTROL SYSTEM ú ú 01 Page 401 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
AAU OBS F/O CAPT
SVR INT EXT HDPH HDPH
SVR INT ATT FLT FLT
FLT INT SVR SVR
DME 2
ADJ
DME 1 ADJ PA SENS
ATTENTION
PA GAIN OBSERVE PRECAUTIONS
PA ST FOR HANDLING
AUDIO POT 1 ELECTROSTATIC
AUDIO POT 2
SENSITIVE DEVICES
REMOTE ELE ONICS UNIT
Remote Electronics Unit Removal/Installation
Figure 401
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AUDIO CONTROL SYSTEM ú ú 02 Page 402 ú Mar 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
TASK 23-51-11-424-004
3. Remote Electronics Unit Installation
____________________________________
A. References
(1)
AMM 20-10-07/201, Electrical/Electronic Black Box
(2)
AMM 20-40-12/201, Electrostatic Discharge Sensitive Devices
(3)
AMM 24-22-00/201, Manual Control
B. Access
(1) Location Zone
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