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6
Post-Repair Calibration..................................................................................................................................................... 62
When Required .............................................................................................................................................................. 62
Inhibit Calibration Jumper ............................................................................................................................................. 62
Calibration Password ..................................................................................................................................................... 62
Restoring Factory Calibration Constants ....................................................................................................................... 62
EEPROM Initialization..................................................................................................................................................... 63
Transferring Calibration Constants To Factory Preset Locations ..................................................................................... 63
Disassembly Procedures ................................................................................................................................................... 68
Tools Required............................................................................................................................................................... 68
Top Cover ...................................................................................................................................................................... 69
Removing Protective RFI Shield (Galvanized Sheet Metal).......................................................................................... 69
GPIB Board.................................................................................................................................................................... 69
A4 AC Input Assembly.................................................................................................................................................. 70
A5 DC RAIL Assembly ................................................................................................................................................. 70
A6 BIAS Assembly........................................................................................................................................................ 70
A3 FET Board................................................................................................................................................................ 70
A10 Control Assembly................................................................................................................................................... 71
Front Panel Assembly .................................................................................................................................................... 71
S1 Line Switch............................................................................................................................................................... 71
A1 Front Panel Board..................................................................................................................................................... 71
A1DSP1 LCD Display ................................................................................................................................................... 72
A1G1 and A1G2 Rotary Controls.................................................................................................................................. 72
A1KPD Keypad ............................................................................................................................................................. 72
Output Bus Boards A7, A81 and A9 & Chassis Components........................................................................................ 72
Principles Of Operation ....................................................................................................................................................... 81
Introduction....................................................................................................................................................................... 81
A2 GPIB Board................................................................................................................................................................. 81
A1 Front Panel Assembly ................................................................................................................................................. 82
A10 Control Board............................................................................................................................................................ 82
Secondary Interface (P/O A10 Board) ........................................................................................................................... 82
A4 AC Input Board........................................................................................................................................................... 85
A5 DC Rail Board............................................................................................................................................................. 85
A3 FET Board................................................................................................................................................................... 85
Output Circuits.................................................................................................................................................................. 86
Replaceable Parts.................................................................................................................................................................. 89
INTRODUCTION ............................................................................................................................................................ 89
Chapter Organization ..................................................................................................................................................... 89
Reading the Tables......................................................................................................................................................... 89
How To Order Parts.......................................................................................................................................................... 90
Diagrams.............................................................................................................................................................................. 115
Introduction..................................................................................................................................................................... 115
Chapter Organization ...................................................................................................................................................... 115
General Schematic Notes ................................................................................................................................................ 119
Backdating........................................................................................................................................................................... 149
Index .................................................................................................................................................................................... 155