221 Service
TABLE OF CONTENTS
SECTION 1
OPERATING INFORMATION
AND SPECIFICATIONS
Page
SECTION 5
C ALIBR ATIO N (cont)
PRELIM INARY PROCEDURE
Page
5-2
INTRODUCTION
1-1
PRELIM INARY CONTROL
ELECTRICAL
1-1
SETTINGS
5-2
Vertical Deflection System
1-1
INDEX TO C ALIBR ATIO N
Triggering
1-1
PROCEDURE
5-3
Horizontal Deflection System
1-2
POWER SUPPLY
5-4
Display
1-2
DISPLAY
5-6
Power
1-2
VE R TIC A L SYSTEM
5-7
PHYSICAL
1-3
SWEEP TRIGGER
5-11
HO RIZONTAL SYSTEM
5-12
SECTION 2
FUNCTIONS OF CONTROLS
AND CONNECTORS
2-1
SECTION 6
TROUBLESHOOTING AIDS
SECTION 3
PREVENTIVE M AINTENANCE
Diagrams
6-1
Troubleshooting Equipment
6-1
Disassembly
3-1
Component Color Coding
6-2
Cleaning
3-1
Isolating Trouble To A C ircuit
6-2
Visual Inspection
3-2
Semiconductor Checks
3-2
Recalibration
3-3
SECTION 7
CORRECTIVE MAINTENANCE
Obtaining Replacement Parts
7-1
SECTION 4
CIRCUIT DESCRIPTION
Component Replacement
7-1
Recalibration A fte r Repair
7-2
BLOCK DIAG RAM
4-1
Instrument Repackaging
7-2
CIRCUIT OPERATION
4-1
Vertical Am plifier
4-1
SECTION 8
ELECTRICAL PARTS LISTS
8-1
Trigger Sweep
4-3
Horizontal A m plifier
4-5
Power Supply
4-6
SECTION 9
DIAGRAMS, CIRCUIT BOARD
CRT Circuit
4-8
ILLUSTRATIONS
SECTION 5
C ALIBR ATIO N
SECTION 10 MECHANICAL PARTS LISTS
10-1
TEKTR O N IX FIELD SERVICE
5-1
TEST EQUIPMENT REQUIRED
5-1
CHANGE INFORMATION
REV. B, AUG. 1974
