NO  
YES YES
25 DISCONNECT THE PLUG FROM
40 REPAIR THE SHORT TO GROUND THE CONTROL STAND, CONNECTOR FROM THE REVERSER CONTROL D5148.VALVE MODULE, M1173 (M1174),
IS THERE CONTINUITY PLUG D3052 (D3056), PIN 7, TO BETWEEN THE RECEPTACLE, PINS 4 THE ENGINE ACCESSORY UNIT, AND 5 (1 AND 2)(WDM 78-32-11, M528, CONNECTOR D1458A -21)? (D1458B), PIN 24

(WDM 78-32-11,-21).
NO
NO
26 EXAMINE THE ADJUSTMENT OF THE STOW SWITCH, S824 (S826)(AMM 78-34-05/201).

IS THE ADJUSTMENT OK?
YES

YES
8 DISCONNECT PLUG D3054

43 DO A CONTINUITY TEST FROM
(D3058) FROM THE REVERSER CON-CONNECTOR D1458A (D1458B),
TROL VALVE MODULE, M1173 PIN 30, TO ELECTRICAL SHELF
(M1174). E3-2, GROUND STUD GDX8-DC

MAKE SURE THAT THE CIRCUIT(DGX5-DC)(WDM 78-32-11,-21).BREAKER, "THR REV CONT SYS", REPAIR AS NECESSARY. IS CLOSED. IF THE CONTINUITY IS OK,
PUSH THE APPLICABLE "T/R REPLACE THE ENGINE ACCESSORY RESET" BUTTON ON THE ENGINE UNIT, M528 (AMM 78-34-06/401).ACCESSORY UNIT, M528.
 DOES THE "REVERSER" LIGHT COME ON?

CONTROL VALVE MODULE, M1173 (M1174)(AMM 78-34-01/401).

REVERSER Fault Light Comes ON on Ground with Reverser Retracted. Reverser Operates Normally Figure 112 (Sheet 4)
C97146
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH TWO LIGHT EAU ú

 71-00-50
 WITH AND WITHOUT SYNC LOCKS  ú CONFIG 7 ú C01 Page 151 ú Jul 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
PREREQUISITES
MAKE SURE THESE CIRCUIT BREAKERS ARE CLOSED: ENG 1 SYNC LOCK ENG 1 THR REV CONT SYS ENG 1 THR REV IND SYS ENG 2 SYNC LOCK ENG 2 SYNC LOCK-ALTN ENG 2 THR REV CONT SYS ENG 2 THR REV CONT SYS-ALTN ENG 2 THR REV IND SYS

MAKE SURE THE AIRPLANE IS IN THIS CONFIGURATION:
REVERSER FAULT
ELECTRICAL POWER IS ON (AMM 24-22-00/201)
LIGHTS ("VALVE DIS-HYDRAULIC POWER IS ON (AMM 29-15-00/201)
AGREE", "RESTOW" ENGINE FIRE SWITCHES PUSHED IN

THRUST REVERSER SLEEVES RETRACTED
AND "SLEEVE
DISAGREE") STAY ON

WARNING:BE CAREFUL WHEN YOU DO WORK NEAR THE THRUST
WHEN REVERSER IS
REVERSER AND WHEN YOU OPERATE THE FLIGHT
STOWED. REVERSER

DECK CONTROLS. INJURY TO PERSONS OR DAMAGE
OPERATES NORMALLY. TO EQUIPMENT CAN OCCUR.

NO

1 EXAMINE THE TARGET-TO-SENSOR GAPS FOR THE AUTO
RESTOW PROXIMITY SENSORS, S831
AND S832 (AMM 78-34-03/201).

ARE THE GAPS OK?

YES
SEE SHEET 2
(BLOCK 2)

DO THESE STEPS TO MAKE SURE THE SYSTEM IS SERVICEABLE:
. ON THE ENGINE ACCESSORY UNIT, M528, PUSH THE RESET
BUTTON TO ERASE THE FAULT INDICATIONS
. DO THE OPERATIONAL TEST FOR THE THRUST REVERSER
(AMM 78-31-00/501).

AIRPLANES WITH THRUST REVERSER SYNC LOCKS

Reverser Fault Lights (VALVE DISAGREE, RESTOW and SLEEVE DISAGREE) Stay On
When Reverser is Stowed. Reverser Operates Normally.
Figure 113 (Sheet 1)

C97147
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH SIX LIGHT EAU ú

 71-00-50
 WITH AND WITHOUT SYNC LOCKS  ú CONFIG 7 ú C01 Page 152 ú Jul 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FROM SHEET 1 (BLOCK 1)

-21):
D1458A (D1458B)
PIN 32
PIN 31
PIN 34
PIN 33

24 REPLACE THE PROXIMITY SEN-SOR, S831 (LEFT HALF SLEEVE) (AMM 78-34-03/201).

Reverser Fault Lights (VALVE DISAGREE, RESTOW and SLEEVE DISAGREE) Stay On
When Reverser is Stowed. Reverser Operates Normally.
Figure 113 (Sheet 2)

C97148
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH SIX LIGHT EAU ú
　
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