T150/150G/T400/400G Course Computers
Type 150/150G/400/400G Course Computers Service Manual 83156-1
3
Type 150/400 Course Computers
Contents
Chapter 1:
Introduction............................................................................................................... 6
1.1. General
description ..................................................................................................6
1.2. Variants ....................................................................................................................6
Chapter 2:
Main Parts and Spares ............................................................................................. 7
2.1. Type 150/150G spares..............................................................................................7
2.2. Type 150/150G exploded view ................................................................................8
2.3. Type 400/400G spares..............................................................................................9
2.4. Type 400/400G exploded view ..............................................................................10
2.5. Spares packs for 150/150G/400/400G ...................................................................11
Chapter 3:
Functional Tests ...................................................................................................... 15
3.1. Introduction ............................................................................................................15
Equipment and Tools You Will Need ................................................................... 15
3.2. Initial Inspection Checks ........................................................................................15
Current Sense Resistors......................................................................................... 16
Relay Visual Checks ............................................................................................. 16
FET SIL Pad .......................................................................................................... 16
3.3. Detailed
Diagnosis .................................................................................................17
Step 1 - Power Checks .......................................................................................... 17
Step 2 - System Checks ......................................................................................... 19
Step 3 – Rate Gyro (if fitted)................................................................................. 19
Step 4 – Compass .................................................................................................. 20
Step 5 – Rudder Reference.................................................................................... 21
Step 6 – Clutch (Auto) .......................................................................................... 21
Step 7– Clutch (Standby) ...................................................................................... 21
Step 8– H-Bridge................................................................................................... 22
Step 9 – NMEA ..................................................................................................... 22
Step 10 – Kill Switch ............................................................................................ 23
Step 11 – EEPROM Test....................................................................................... 23
Chapter 4:
Disassembly and Reassembly ............................................................................... 24
4.1. Tools
required ........................................................................................................24
4.2. Disassembly............................................................................................................24
4.3. Reassembly.............................................................................................................24
4.4. Removing/fitting GyroPlus yaw sensor..................................................................25
Removing the GyroPlus yaw sensor...................................................................... 25
Fitting the G
y
roPlus yaw sensor ........................................................................... 25
After installing a GyroPlus yaw sensor ............................................................ 25
Course Computer re-calibration................................................................... 25
Chapter 5:
Functional Circuit Description .............................................................................. 26
5.1. Test points on PCB.................................................................................................26
5.2. Main functional parts of circuit ..............................................................................27
Power Supply.................................................................................................... 27
