Digital Equipment LA30 N Service Manual Download

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4.9

Level 2 Maintenance ................................................................................................................................. 4-6

4.9.1

Parts replacement ................................................................................................................................ 4-6

(1)

Acoustic cover replacement ....................................................................................................... 4-7

(2)

Tractor unit replacement ............................................................................................................ 4-8

(3)

Cover replacement, including platen knob ................................................................................ 4-11

(4) Control panel replacement ......................................................................................................... 4-15

(5)

Printing mechanism replacement ............................................................................................... 4-16

(6)

Power supply and fuse replacement ........................................................................................... 4-17

(7)

RS-423 board replacement ......................................................................................................... 4-18

(8)

ROM board (control board) replacement ................................................................................... 4-19

(9)

Platen roll assembly replacement ............................................................................................... 4-21

(10) Paper feed motor (LF motor) replacement ................................................................................ 4-22

(11) Space motor (SP motor) assembly replacement ........................................................................ 4-23

(12) Sensor T replacement ................................................................................................................. 4-24

(13) Carriage unit replacement .......................................................................................................... 4-25

(14) Print head and ribbon feed assembly replacement ..................................................................... 4-27

(15) Gear assembly replacement ....................................................................................................... 4-28

(16) Paper feeder assembly replacement ........................................................................................... 4-29

(17) Card guide replacement ............................................................................................................. 4-30

(18) Ribbon shift unit (color kit) replacement ................................................................................... 4-31

4.9.2

Adjustment .......................................................................................................................................... 4-32

(1)

Print head gap adjustment .......................................................................................................... 4-32

(2)

Vertical alignment ...................................................................................................................... 4-34

(3)

Top-of-forms adjustment (factory use) ...................................................................................... 4-36

4.9.3

Lubrication .......................................................................................................................................... 4-37

(1)

Ribbon drive assembly ............................................................................................................... 4-38

(2)

Color ribbon shift motor (option) .............................................................................................. 4-39

(3)

LF gear bearing and continuous/single lever ............................................................................. 4-40

(4)

Back cover assembly .................................................................................................................. 4-41

(5)

Paper feed roller shaft ................................................................................................................ 4-42

(6)

Shaft ........................................................................................................................................... 4-43

(7)

Stay shaft .................................................................................................................................... 4-44

(8)

Front and top covers (LA30N) ................................................................................................... 4-45

(9)

Front and top covers (LA30W) .................................................................................................. 4-46

(10) Sheet guide assembly ................................................................................................................ 4-47