S 864-027

 (5)  
Remove the DO-NOT-CLOSE tags on the P6-4 circuit breaker panel and close the circuit breakers for the air conditioning system and the temperature control system.

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737-300/400/500MAINTENANCE MANUAL
 S 864-028
 (6)  Remove the DO-NOT-CLOSE tags on the P6-3 circuit breaker panel and close these circuit breakers:
 (a)  
MASTER CAUTION (all except FUEL, if installed)

 (b)  
INDICATOR LIGHTS, MASTER DIM BUS (9 locations)

 (c)  
DIM & TEST (1 location)

 (d)  
NOSE GEAR AIR/GND

 (e)  
LANDING GEAR AIR/GND RELAY & LTS

 E. Cabin Temperature Indicator Installation Test
 S 864-030
 (1)  
Supply electrical power to the airplane (AMM 24-22-00/201).

 S 864-078

 (2)  
Move the R PACK switch on the P5-10 air conditioning panel to AUTO.

 S 864-082

 (3)  
Put the AIR TEMP switch on the P5-17 panel in the PASS CABIN position.

 S 714-057

 (4)  
Hold the thermometer near the inlet of the passenger cabin
 temperature sensor assembly for one minute.

 S 974-085

 (5)
Make a note of the temperature that shows on the thermometer.

 S 714-077

 (6)  
Make sure that the cabin temperature indicator shows the same temperature as the thermometer.

 F. Put the Airplane Back to Its Usual Condition
 S 864-069
 (1) Remove electrical power from the airplane (AMM 24-22-00/201).
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737-300/400/500MAINTENANCE MANUAL
 CABIN TEMPERATURE SELECTOR - REMOVAL/INSTALLATION
_________________________________________________
 1. General
_______
 A. This Procedure Provides These Tasks
 (1)  
Removal of the cabin temperature selector.

 (2)  
Installation of the cabin temperature selector.

 TASK 21-61-07-004-001
 2. Cabin Temperature Selector Removal
__________________________________
 A. Access
 (1)  Location Zone
 102 Control Cabin - Right

 B. Prepare for the Removal
 S 864-002
 (1)  
Make sure that the L and R PACK switches on the P5-10 air conditioning panel are set to OFF.

 S 864-003

 (2)  
Open all the circuit breakers on the P6-4 panel for the air conditioning system and the temperature control system and install DO-NOT-CLOSE tags.

 S 864-004

 (3)  
Open these circuit breakers on the P6-3 panel and install DO-NOT-CLOSE tags:

 (a)  
MASTER CAUTION (all except FUEL, if installed)

 (b)  
INDICATOR LIGHTS, MASTER DIM BUS (9 locations)

 (c)  
DIM & TEST (1 location)

 (d)  
NOSE GEAR AIR/GND

 (e)  
LANDING GEAR AIR/GND RELAY & LTS

 S 014-005
 (4)  Lower the P5 panel to get access to the P5-17 temperature control module on the forward overhead panel in the flight deck.
 C. Cabin Temperature Selector Removal
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A

737-300/400/500MAINTENANCE MANUAL
CABIN TEMPERATURE
MODULE (P5-17)

SEE A
FLIGHT COMPARTMENT 
CONT CABIN  AIR TEMP  PASS CABIN 
　
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