MAINTENANCE MANUAL
starter-generator. At 70 percent speed, the elctronic control unit removes the start signal for the start converter unit. With the start signal off, the SCU and the SPU removes the power from the starter-generator.
TEXT PAGE
Training Information Point
The maximum duty cycle for the SPU and SCU is three starts, on after the other, followed by a 15 minute cool down period. If you do too many starts one after the other the SCU and SPU will get too hot and stop the APU start. More starts are possible after the SCU and SPU cool.
You access the SCU terminal block for the AC power feeder wires from the back of the SCU. You remove the panel behind the E2 rack from the forward cargo compartment to access the back of the SCU.
GRAPHIC PAGE

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EE COMPARTMENT (LOOKING AFT) 
ECU (AFT CARGOL)  115V AC TRANSFER BUS 1 OR BATTERY 

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EFFECTIVITY
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MAINTENANCE DOCUMENTS -- AMM PART 2 - INTRODUCTION

General
Part II of the AMM contains the maintenances practices and procedures to do maintenance on the airplane.
Chapter Numbering System
The manual has a tab section for each ATA chapter. Within each tab section, the manual has more divisions that use the assigned subject number (ASN) list number XX-YY-ZZ, where:
-XX is the ATA chapter
-YY is the subsystem or sub-subsystem
-ZZ is the unit (component).
The table of contents for each chapter lists the maintenance procedures in numerical order for each subsystem and sub-subsystem. For each subsystem or sub-subsystem, the maintenance tasks are in alphabetical order based on the page numbers described below.
Page Numbering System
Each page has two numbers in the lower right corner: the ASN and a topic page number. Each topic is made up of a page block. Each page block is for a special type of information. These are the page blocks:
Page Type  Page Block 
MAINTENANCE PRACTICES (MP)  201-299 
SERVICING (SRV)  301-399 

737-600/700/800/900 TRAINING MANUAL

Page Type  Page Block 
REMOVAL/INSTALLATION (R/I)  401-499 
ADJUSTMENT/TEST (A/T)  501-599 
INSPECTION/CHECK (I/C)  601-699 
CLEANING/PAINTING (C/P)  701-799 
REPAIRS (AR)  801-899 
DISPATCH DEVIATIONS GUIDE (DDG)  901-999 

Dispatch Deviation Guide
If all the topics for an ATA chapter, subsystem, or sub-subsystem are brief, all the topics are in a single MAINTENANCE PRACTICES page block.
The dispatch deviations guide page block has procedures with maintenance tasks that prepare the airplane for flight with certain systems/components inoperative. It also has tasks that put the airplane back to its usual condition.
Training Information Point
Each chapter of part II of the AMM has a list of effective pages at the beginning of each chapter.
Training Information Point
Chapter 12 of the AMM has the title SERVICING. This chapter has procedures to fill and drain items such as:
-Fuel
-Oil

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-Hydraulic fluid
-Water
-Tire pressure.

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737-600/700/800/900 TRAINING MANUAL MAINTENANCE DOCUMENTS -- AMM PART 2 - MAINTENANCE TASK STRUCTURE
General
The maintenance tasks are procedures for specific maintenance requirements. For example, R/I page blocks normally contain two tasks: removal of the LRU and installation of the LRU.
Each procedure has some or all of these paragraphs:
-General
-Equipment
- Consumable materials 
- References 
- Access 

-Prepare for removal
-Procedure
　
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