BFGoodrich PS-823

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BFGoodrich

Avionics

Systems, Inc.

Component Maintenance Manual

P/N 501-1075-()

This

page intentionally

blank.

Listof

Effective

Pages

msmljtp202FrontMatterdisk202

24-20-03

Page

Revision A June

30, 1999

Main Page

Table of Contents7
Table of Contents8
List of Figures9
List of Abbreviations12
- Description and Operation13
General13
Purpose of Manual13
Purpose of Equipment13
Physical Description13
Functional Description14
Specifications14
Model Variation15
- Emergency Power Supply Models16
- Compatible Indicators and Manufacturers16
- Oscillator17
- Power Input17
Theory of Operation17
- Battery Isolation and Charging18
- Power Regulation and Output18
- Start/Run Power18
- Battery Test Circuit19
- Testing and Fault Isolation21
General21
Tools and Test Equipment21
- JT-5 Emergency Power Supply Test Panel22
- JT-5-1A Test Set Adapter24
Emergency Power Supply Test Setup26
Performance Test Standards27
Battery Pack Test28
- Initial Battery Test Procedure28
Power Supply Charging29
- Battery Pack and Cell Test Procedure30
- Charging Circuit Assembly Inspection30
- Battery Pack Deep-Cycle Discharge and Testing30
- Individual Cell Deep-Cycle Discharge and Testing31
20-Cell Battery Pack Charging31
PS-823A through H Periodical Inspection and Charging32
PS-823 Storage32
- Emergency Power Supply Calibration33
- Emergency Power Supply Performance Test33
- Performance Test with Test Setup35
- Ps-823A35
Test Setup with Attitude Indicator43
Emergency Power Supply Calibration43
- Calibration with JT-5 Test Set44
- Performance Test with JT-5 Test Set45
- Performance Test with51
Test Points and Settings53
- Disassembly67
Cover Removal67
Chassis Breakage Prevention68
Battery Pack Removal68
Circuit Card Assembly Removal69
Battery Test Circuit (if Present) Removal from Circuit Card Assembly69
Transistor/Heatsink Assembly Removal69
Diode Assembly Removal69
Chassis Disassembly69
General71
Extemal Cleaning71
Intemal Cleaning71
General73
Checks Prior to Repair (in Aircraft)73
Storage74
General75
Circuit Card Assembly (CCA) Repair75
Performance Test76
Moisture and Fungus Proofmg76
Battery Pack Replacement77
Power Supply Reassembly80
Perfornance Test80
Chassis Assembly83
Mounting Fuse Holder83
- Assembly 1. General83
Mounting Diode Assembly84
Mounting Transistor/Heatsink Assembly84
Circuit Card Assembly84
Battery Pack Assembly84
- Cover Assembly Replacement85
- Preparation for Use or Storage85
- Fits and Clearances87
General87
Emergency Power Supply Location87
Post Installation88
- Special Tools, Fixtures and Equipment89
General89
Tools and Test Equipment89
Numerical Lndex95
Part Reference Designator Lndex95
Detailed Parts List95
How to Use the Detailed Parts List113
Model115
Emergency Power Supply135
- Figures184
- Block Diagram325
PS-823A and B Schematic Diagram327

BFGoodrich PS-823 - Page 6

Table of Contents