Function Codes 7X0: Testing and Checking 
710  Operational 
720  Functional 
730  System 
740  BITE 

Function Codes 7X0: Testing and Checking 
750  Special 
760  Electrical 
780  Pressure 
790  Leak 

Function Codes 8X0 and 9X0: Miscellaneous 
810  Fault isolation 
820  Adjusting, aligning, calibrating, or rigging 
840  Preparing for maintenance or restoring to normal 
850  Operator modification incorporation 
860  Aircraft or system configuration 
870  Bleeding 
880  Heating or cooling 
890  Airline maintenance program 
900  Change (remove and install) 
910  Standard practices 
930  Marking 
940  Job set up or close up 
950  Masking 
960  Replace 
970  Data recording or calculating 
980  Manual operation or positioning 
990  Illustrations or tables 

01-00-00

737-600/700/800/900 TRAINING MANUAL MAINTENANCE DOCUMENTS -- AMM PART 2 - AMTOSS NUMBERS Sequence Number
The sequence number makes sure there is a unique number for all tasks and sub-tasks which have the same ATA and function code. Task sequence numbers are numbered 801 through 999. If all task numbers are used, the third digit uses alphabetic characters. Sub-task sequence numbers are numbered 001 through 800.
Configuration
The configuration is a three digit alpha-numeric code that identifies the maintenance task for these items:
-Configuration
-Methods or techniques
-Variations of standard practices.
This data is blank or has zeroes if there is no data.
01-00-00

737-600/700/800/900 TRAINING MANUAL

01-00-00-016 Rev 1 12/23/1998
TASK 49-41-71-000-801

SEQUENCE NUMBER FUNCTION CODE ATA SUBJECT ATA SECTION ATA CHAPTER
AMTOSS SUBTASK 860-001

SEQUENCE NUMBER FUNCTION CODE
NOTE: AMTOSS TASK (SHOWN AS REFERENCE)
MAINTENANCE MANUAL
AMTOSS
START POWER UNIT- REMOVAL/INSTALLATION
TASK
 1.   General

A. This procedure has these tasks:
(1)  
A removal of the start power unit.

(2)  
An installation of the start power unit.

B.  The start power unit is installed on the E2-2 electrical shelf. The E2-2
electrical shelf is found in the electrical and electronics compartment (section 43)
C.  The start power unit is referred to as the SPU.
TASK 49-41-71-000-801
2.  Start Power Unit Removal (Fig. 401) A.References
(1)  
AMM TASK 20-10-07-000-801 p201, E/E Box Removal

(2)  
AMM TASK 20-40-12-000-802 p 201, ESDS Handling for Metal Encased Unit Removal

B. Access
(1)  
Location Zones

(a)
118 Electrical and Electronics Compartment - Right

(b)
121 Forward Cargo Compartment - Left

(c)
122 Forward Cargo Compartment - Right

(d)
211 Flight Compartment - Left

(2)  
Access Panels

(a)
 117A Electronic Equipment Access Door

(b)
821 Forward Cargo Door

C. Prepare For The Removal SUBTASK 860-001

(1)  Make sure that the APU master switch on the P5 forward overhead panel is OFF and install a DO-NOT-OPERATE tag.

SUBTASK 860-002

(2)  
Open these circuit breakers and attach D0-NOT-CLOSE tags:

(a) Circuit breaker panel, P6-4: 1) 6A14 AUX POWER UNIT CONT 2) 6B14 AUX POWER UNIT SCU FAN POWER
SUBTASK 010-001
(3)
Open the electrical equipment access door, 117A

SUBTASK 860-005

(4)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

(a)
 Battery Shield, J9: 1) 9Z99 BATTERY CHARGER

(b)
Power Distribution Panel Number 1, P91: 1) 91G1 APU START CONV

EFFECTIVITY
49-41-71
ALL
Page 401 Jun 05/98

MAINTENANCE DOCUMENTS - AMM PART 2 - AMTOSS NUMBERS
01-00-00

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MAINTENANCE DOCUMENTS -- SYSTEM SCHEMATIC MANUAL Purpose
The System Schematics Manual gives the user an understanding of system operation and helps in the fault isolation process. To do this, the manual includes this kind of information on the schematics:
-Component locations
-Component identification (drawings)
-Controls
-Displays
-Logic for system/subsystem operation
-Logic for messages.
Organization
　
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