(1)
The stow relay is de-energized which results in the isolation valve closing.
(2)
The disagreement condition between the directional control valve and the isolation valve is removed, therefore the REVERSER light extinguishes.
D.
In the event of disagreement in the positions of the translating sleeves resulting in illumination of the REVERSER light, and thus of the master caution lights, the T/R RESET switch on the Engine Accessory Unit must be pressed before the REVERSER light will extinguish.
(1)
However, with auto-restow (AMM 78-34-00/001) activated, the THR REV CONT SYS circuit breaker must be cycled to extinguish the light, plus it may also be necessary to press the T/R RESET switch.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
78-36-00
ALL ú ú C01 Page 13 ú Nov 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
P2 CENTER INSTRUMENT PANEL
Thrust Reverser Indicating System Simplified Schematic
Figure 3 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH TWO LIGHT EAU ú
78-36-00
ú ú C01 Page 14 ú Nov 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
D00142
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
M528 ENGINE ACCESSORY UNIT
Thrust Reverser Indicating System Simplified Schematic Figure 3 (Sheet 2)
C98947
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH TWO LIGHT EAU ú
78-36-00
ú ú C01 Page 15 ú Nov 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
Thrust Reverser Indicating System Simplified Schematic
Figure 4 (Sheet 1)
C99455
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH SIX LIGHT EAU ú
78-36-00
WITH DFDR-T/R DEPLOY PROXIMITY SENSOR ú ú C01 Page 16 ú Mar 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
J V Q R P T U S N O K M L H I G F A C B E D A6 LEFT T/R NOT STOWED 28V DC NOT STOWED A1 ISOLATION 28V DC OPEN CLOSE NOT STOWED K3 ENGINE 1 RIGHT STOWED RELAY VALVE 28V DC A5 RIGHT T/R NOT STOWED DEPLOY STOW NOT STOWED 28V DC A2 CONTROL VALVE S835 LEFT T/R NOT STOWED SENSOR S836 RIGHT T/R NOT STOWED SENSOR DEPLOYED PROX SENSOR S926 RIGHT SLEEVE S925 LEFT SLEEVE S834 CONTROL VALVE S833 ISOLATION VALVE DEPLOY SENSOR OPEN SENSOR M1173 ENGINE 1 THRUST REVERSER CONTROL VALVE MODULE (LEFT A/C BAY)
DEPLOYED PROX SENSOR M528 ENGINE ACCESSORY UNIT ENGINE 1 Thrust Reverser Indicating System Simplified Schematic Figure 4 (Sheet 2)
C99483
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78-36-00
WITH DFDR-T/R DEPLOY PROXIMITY SENSOR ú ú C01 Page 17 ú Nov 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
DIFFERENT. M528 ENGINE ACCESSORY UNIT
Thrust Reverser Indicating System Simplified Schematic Figure 5 (Sheet 1)
C99577
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