Table Of Contents - Tektronix 2445A Service Manual

2445A/2455A Service
TABLE OF CONTENTS
Page
LIST OF ILLUSTRATIONS .................. iii
LIST OF TABLES ................................. iv
OPERATORS SAFETY SUMMARY .... v
SERVICING SAFETY SUMMARY ....... vi
SECTION 1 SPECIFICATION
INTRODUCTION .............................. 1-1
PERFORMANCE CONDITIONS...... 1-1
SECTION 2 OPERATING INFORMATION
SAFETY ........................................... 2-1
LINE VOLTAGE SELECTION .......... 2-1
LINE FUSE....................................... 2-1
POWER CORD ................................ 2-1
INSTRUMENT COOLING ................ 2-1
OPERATING INFORMATION .......... 2-1
START-UP ....................................... 2-2
REPACKAGING FOR SHIPMENT .. 2-2
SECTION 3 THEORY OF OPERATION
SECTION 4 PERFORMANCE CHECK AND
FUNCTIONAL VERIFICATION
PROCEDURE
INTRODUCTION . ....... ..................... 4-1
PREPARATION ................................ 4-1
VERTICAL.......................................... 4-4
TRIGGERING ..................................... 4-16
HORIZONTAL .................................... 4-21
COUNTER/TIMER/TRIGGER
CHECKS ............................................. 4-28
HORIZONTAL (cont).......................... 4-33
CALIBRATOR, EXTERNAL
Z-AXIS AND GATE OUTPUTS .......... 4-35
ADDITIONAL FUNCTIONAL
VERIFICATION ................................... 4-37
WORD RECOGNIZER CHECKS....... 4-39
SECTION 5 ADJUSTMENT PROCEDURE
INTRODUCTION................................... 5-1
POWER SUPPLIES ........................... 5-2
CRT ADJUSTMENTS........................ 5-4
Page
DAC REF, CH 1 AND CH 2
INPUT CAPACITANCE, AND
VERTICAL READOUT JITTER
ADJUSTMENTS ................................. 5-7
AUTOMATIC CALIBRATION
CONSTANTS, HORIZONTAL
AND VERTICAL GAIN,
CENTERING, AND TRANSIENT
RESPONSE ADJUSTMENTS............ 5-10
CAL 01-HORIZONTAL.. ................ 5-10
CAL 02-VERTICAL ....................... 5-14
CAL 03-TRIGGERING .................. 5-15
CAL 04-CH 2 DELAY
ENABLE/DISABLE .......................... 5-16
CAL 05-Set HRS ON and
PWR ON/OFF CYCLES ................... 5-17
CAL 06-VERTICAL
TRANSIENT RESPONSE ................ 5-17
CAL O7-READOUT CENTERING
AND GAIN ........................................ 5-20
DYNAMIC CENTERING,
DC BALANCE, AND
X-Y PHASE DIFFERENTIAL
ADJUSTMENTS ................................. 5-21
SECTION 6 MAINTENANCE
STATIC-SENSITIVE COMPONENTS.. 6-1
PREVENTIVE MAINTENANCE............ 6-2
INTRODUCTION.............................. 6-2
GENERAL CARE ............................. 6-2
INSPECTION AND
CLEANING....................................... 6-2
LUBRICATION ................................. 6-4
SEMICONDUCTOR CHECKS ......... 6-4
PERIODIC READJUSTMENT ......... 6-4
TROUBLESHOOTING .......................... 6-5
INTRODUCTION .............................. 6-5
TROUBLESHOOTING AIDS ........... 6-5
TROUBLESHOOTING
EQUIPMENT .................................... 6-6
TROUBLESHOOTING
TECHNIQUES .................................. 6-6
DIAGNOSTIC ROUTINES............... 6-9
CORRECTIVE MAINTENANCE ........... 6-20
INTRODUCTION.............................. 6-20
MAINTENANCE PRECAUTIONS .... 6-20
OBTAINING REPLACEMENT
PARTS ............................................. 6-20
MAINTENANCE AIDS ..................... 6-20