Chapter 4. DIRECT SUPPORT MAINTENANCE INSTRUCTIONS

TM 11-7025-233-23

CHAPTER 4

D I R E C T SUPPORT MAINTENANCE INSTRUCTIONS

Index of Maintenance Procedures

Paragraph No.

Title

Page No.

Access/Close Up Teleprinter

4-11

4-37

Remove/Replace Control Panel

4-12

4-39

Remove/Replace Control Panel Keybutton, Keyswitch, and

4-13

4-40

Spring

Remove/Replace 2K Extended Line Buffer Board

4-42

4-14

4-15

Remove/Replace Print Position Indicator Board (T3PPI/1)

4-43

Remove/Replace Print Position Indicator Cable

4-45

4-16

Remove/Replace Print Head

Adjust Print Head

Remove/Replace Print Head Cable

4-19

Remove/Replace RS-232C Panel Assembly

4-52

4-20

4-58

Remove/Replace Side Frame Support

4-21

4-22

Remove/Replace Bottom Cover

4-61

4-62

Remove/Replace Frame and Drive Assembly

4-23

Remove/Replace Paper Shield

4-67

4-24

4-69

Remove/Replace Detent

4-25

Remove/Replace Paper Thickness Knob

Remove/Replace Ribbon Drive Motor

4-72

Remove/Replace Paper Stepper Motor

4-28

4-73

4-29

Adjust Paper Stepper Motor

4-75

4-30

Remove/Replace Carriage Assembly

4-78

4-31

Convert Power Supply From 117 V ac to 220 V ac

Remove/Replace Carriage Assembly Drive Belt

4-80

4-32

4-82

Remove/Replace Carriage Assembly Idler Pulleys

4-33

Remove/Replace Carriage Drive Motor (with Encoder

4-34

4-86

Assembly)

4-89

Remove/Replace Encoder Cable Assembly

4-35

4-91

Remove/Replace Carriage Servo Drive Board (T3SD/1)

4-36

4-93

Remove/Replace Paper Pan Assembly

4-37

4-97

Remove/Replace Pressure Roller Assembly

4-38

4-98

Remove/Replace Pressure Roller Arm

4-39

Remove/Replace Roller Lever Assembly

4-99

4-40

Adjust Paper Out Switch

4-100

4-41

Remove/Replace Power Supply Assembly

4-42

4-102

4-43

Remove/Replace Power Supply Board (PPS/2)

4-105

4-44

Remove/Replace Filter

4-109

Remove/Replace Ac Power Switch

4-45

4-112

4-46

Remove/Replace Power Supply Fuse

4-115

Remove/Replace Power Supply Cable

4-47

4-117

4-48

Remove/Replace Platen

4-121

Remove/Replace Platen Knob

4-49

4-123

4-50

Remove/Replace Intermediate Gear

4-124

Remove/Replace Tractor Assembly

4-125

4-51

Remove/Replace Tractor Assembly Paper Support

4-126

4-52

4-53

Remove/Replace Tractor Assembly Bearing

4-127

4-1