DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE: 
CHAPTERPAGE 013
MAINTENANCE MANUAL STEMME S12
3.7.7.3 Semiconductor Switch Box. .......................................................................... 3-47
3.7.8 Main System Distribution Box........................................................................ 3-47
3.7.9 Engine System Distribution Box . ................................................................... 3-47
3.7.10 TCU Board. ................................................................................................ 3-47
3.7.11 Instrument Panel Bus System. ....................................................................... 3-49
3.7.12 Engine Starting System (ATA 80-00-00). .........................................................3-50
3.7.12.1 Description. ...............................................................................................3-50
3.7.12.2 Parts Specication. ..................................................................................... 3-50
3.7.12.3 Operation. ................................................................................................. 3-50
3.7.13 Engine Ignition System (ATA 74-00-00). .......................................................... 3-51
3.7.13.1 Description. ............................................................................................... 3-51
3.7.13.2 Parts Specication. ..................................................................................... 3-51
3.7.13.3 Operation. ................................................................................................. 3-51
3.7.14 Engine RPM Indicating System (ATA 77-14-00). ................................................ 3-52
3.7.14.1 Description. ............................................................................................... 3-52
3.7.14.2 Parts Specication. ..................................................................................... 3-52
3.7.14.3 Operation. ................................................................................................. 3-52
3.7.15 Cylinder Head Temperature Indicating System (ATA 77-22-00). .......................... 3-52
3.7.15.1 Description. ............................................................................................... 3-52
3.7.15.2 Parts Specication. ..................................................................................... 3-52
3.7.15.3 Operation. ................................................................................................. 3-52
3.7.16 Oil Pressure Indicating System (ATA 79-31-00). ................................................ 3-53
3.7.16.1 Description. ............................................................................................... 3-53
3.7.16.2 Parts Specication. ..................................................................................... 3-53
3.7.16.3 Operation. ................................................................................................. 3-53
3.7.17 Oil Temperature Indicating System (ATA 79-33-00). .......................................... 3-53
3.7.17.1 Description. ............................................................................................... 3-53
3.7.17.2 Parts Specication. ..................................................................................... 3-53
3.7.17.3 Operation. ................................................................................................. 3-54
3.7.18 Fuel Distribution System (ATA 28-20-00). ........................................................ 3-54
3.7.18.1 Description. ............................................................................................... 3-54
3.7.18.2 Parts Specication. ..................................................................................... 3-54
3.7.18.3 Operation. ................................................................................................. 3-54
3.7.18.4 Transfer Pump Control and Tank Selection. ..................................................... 3-55
3.7.19 Fuel Quantity Indication (ATA 28-40-00)......................................................... 3-55
3.7.19.1 Description. ............................................................................................... 3-55
3.7.19.2 Parts Specication. ..................................................................................... 3-55
3.7.19.3 Operation. ................................................................................................. 3-55
3.7.20 Fuel Pressure Indicating (ATA 73-32-00). ......................................................... 3-56
3.7.20.1 Description. ............................................................................................... 3-56
3.7.20.2 Parts Specication. ..................................................................................... 3-56
3.7.20.3 Operation. ................................................................................................. 3-56
3.7.21 Fire Detection System (ATA 26-12-00). ............................................................ 3-56