Apple Color Printer Service Manual

K

Service Source

Apple Color Printer

K

Service Source

Basics

Apple Color Printer

Basics Overview - 1

Overview

The Apple Color Printer
control panel signals

Control

Panel

printer errors by means of
status messages, an alarm
indicator light, and a beep
tone.

Using a set of control keys,
you can perform various
service functions from the
control panel. There are two
modes of operation from the
panel: user and service.
Different levels and types of
menus are accessible in each
mode.

Basics Overview - 2

To access either the user or
service menus, you must
turn the printer off-line.
You can toggle the printer
on- and off-line by pressing

Display

the On Line key.

The printer is off-line when

On Line Key

On Line Indicator

the on line indicator is off
and the display reads

“00 READY.”

Note:

The * indicates that
the print heads are capped
and the printer may be
turned off.

Basics Control Panel Keys - 3

Control Panel Keys

Four control keys allow you

Display

On Line
Key

to operate the user and
service menus.

< Key

Enter Key

Menu/> Key

Basics Control Panel Keys - 4

• Pressing the Exit key
moves you from the
current menu level to
the next higher level.

Exit Key

Basics Control Panel Keys - 5

• Pressing the Enter
key moves you from
the current menu
level to the next
lower level. If you are
at the lowest menu
level, pressing the
Enter key executes
the menu item that is
currently displayed.

Enter Key

Basics Control Panel Keys - 6

• Pressing the > or <
key changes the menu
to the next choice at
the same level and
changes the value of
any parameter
displayed.

< Key

Menu/> Key

Basics User Menus - 7

User Menus

To enter the user mode and
access the user menus,
switch on the printer and set
it to off-line (press the On
Line key so that the on line
indicator turns off).

Press the Menu key once to
see the first menu displayed.
Then use the > or < key to
move between the menus
and choices.

Press the Enter key to
execute a selection.

< Key

Enter Key

Display

On Line
Key

Menu/> Key

Basics User Menus - 8

The following selections are available in the user menus:

PRINTING MODE

• MODE-A
Prints plain paper, envelopes, or coated paper

• MODE-B
Prints transparencies

• MODE-C
Prints blacks twice as dark

• MODE-D
Reduces bleeding on graphics with plain paper; increases
printing time considerably

• MODE-E
Prints high-speed drafts

Basics User Menus - 9

CLEANING

• CLEANING-A
Cleaning A clears print head of clogged ink nozzles.

• CLEANING-B
If Cleaning A does not work after 2–3 times, use Cleaning
B. Cleaning B uses more time and ink
(1.5 min. and 2 g of ink).

SET PARAMETER

The Set Parameter menu controls settings for parallel
interface. Do not change any of these settings.

Basics User Menus - 10

TEST PRINT

• TEST PRINT-A
Gives current status of printer (ROM version, interface,
etc.) as well as a color grid

• NOZZLE CHECK
Gives test pattern to check print head

DUMP MODE

• DUMP OFF (default mode)

• DUMP ON

INTERFACE SELECT

• SCSI (default mode)
Use Enter key to set SCSI ID number.

• PARALLEL

Basics User Menus - 11

COUNTRY CODE

• ENGLISH (default)

• FINNISH

• FRENCH

• GERMAN

• ITALIAN

• JAPANESE

• NORWEGIAN

• PORTUGUESE

• SPANISH

• SWEDISH

• DANISH

• DUTCH

NVRAM INITIALIZE

• INIT. NO (default)

• INIT. YES

Basics User Menus - 12

MEDIA SELECT

• NORMAL PAPER (default)

• ENVELOPE/THICK

Basics Service Menus - 13

Service Menus

To enter the service mode
and access the service
menus, switch off the
printer, hold down the
Menu key and the < key at the
same time, and switch the
printer back on.

Hold down the Menu and <
keys until a series of
squares appears on the
display. Then release the
keys, hold down the On Line
key, and press the Enter key
twice.

< Key

Enter Key

Display

On Line
Key

Menu/> Key

Basics Service Menus - 14

Note:

The first menu
displayed should be “BLACK
OFFSET.” If the first menu
is “CLEANING,” you are not
in the service mode. Repeat

Display

the entering service mode
procedure.

Basics Service Menus - 15

The following selections are available in the service menus:

BLACK OFFSET

Sets value for Black registration

CYAN OFFSET

Sets value for Cyan registration

MAGENTA OFFSET

Sets value for Magenta registration

YELLOW OFFSET

Sets value for Yellow registration

Basics Service Menus - 16

DIRECTION OFFSET

Sets the printing position for printing in both directions

TEST PRINT

• TEST PRINT-A
Bubble-jet head jet check pattern

• TEST PRINT-B
Bubble-jet head/main unit precision check pattern 1

• TEST PRINT-C
Printing position setting pattern

• TEST PRINT-D
Bubble-jet head/main unit precision check pattern 2

• HEAT RUN
Printer mechanism drive function for factory inspection

Basics Service Menus - 17

CLEANING

• CLEANING-A
Clears print head of clogged ink nozzles

• CLEANING-B
Checks the ink passage pressure

• CLEANING-C
Fills ink passage in the ink supply system

• CLEANING-D
Flushes ink supply system

Basics Service Menus - 18

CENTER HEAD

Moves the carriage to the center of the printer to allow
replacement of the bubble-jet head unit

When you press the Enter key, the carriage moves (while
the beeper sounds) and stays at the center of the printer for
5 seconds. The carriage then returns to its home position. To
exit this mode, switch the power off.

Basics Block Diagram - 19

Block Diagram

Basics Wiring Diagram - 20

Wiring Diagram

CNEXT

CNPOW

Basics Wiring Diagram - 21

CNMOT

Basics Wiring Diagram - 22

CNMEC

Basics Wiring Diagram - 23

CNPGM

CNPG

CNINK

CNID

Basics Wiring Diagram - 24

CNPE

CNPAN

Basics Wiring Diagram - 25

CNCAR1

Basics Wiring Diagram - 26

CNCAR2

Basics Wiring Diagram - 27

CNCA1

Basics Wiring Diagram - 28

CNCA2

Basics Wiring Diagram - 29

CNY

Basics Wiring Diagram - 30

CNM

Basics Wiring Diagram - 31

CNC

Basics Wiring Diagram - 32

CNK

Basics Wiring Diagram - 33

CNPW

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Service Source

Specifications

Apple Color Printer

Specifications Characteristics - 1

Characteristics

Print Methods

Throughput

Print Head

Print Head Life

Input Buffer

Serial bubble jet ink-on-demand

170 cps (10 cpi) text/standard speed mode
300 cps (10 cpi) text/high-speed mode

6.120 dots/sec. bit image

1 x 64 nozzles for each color

Approximately 100 million characters (MODE-A)

7 KB

Specifications Graphics - 2

Graphics

Resolution

360 dpi (best mode)

Specifications Paper Handling - 3

Paper Handling

Paper

Cut Sheets

Envelopes

Transparencies

Coated (recommended)

LDG, LTR, LGL, A3, B4, A4
Width: 7.9 in. to 11.7 in. (210 to 297 mm)
Length: 7.9 in. to 17.0 in. (210 to 432 mm)
Weight: 16 to 24 lbs.
Capacity: 100 sheets (A4, LTR)
50 sheets (B4, A3, LGL, LDG)

Commercial Number 10 size only (4.1 in. x 9.5 in)
Capacity: 5 envelopes

Coated transparencies, most inkjet transparencies

Specifications Ink Cartridges - 4

Ink Cartridges

Type

Ink Color

Ink Amount

Life

Color ink cartridges (four available)

Black, Cyan, Magenta, Yellow

Approx. 30 g (per cartridge)

Text: Approx. 700 pages (A4/LTR)

Specifications Environmental - 5

Environmental

Acoustic Noise Level

Temperature

Humidity

Approx. 45 dB (reference level)

59°F to 86°F (15°C to 30°C)

10% to 80% (no condensation)

Specifications Electrical - 6

Electrical

Power Source

Power Consumption

AC 120V 60Hz 0.36A (U.S./Canada)

48 W maximum

Specifications Physical - 7

Physical

Dimensions

Weight

Height: 6.7 inches (169 mm)
Width: 20.5 inches (520 mm)
Depth: 16.0 inches (407 mm)

Approx. 22 lbs (10 kg)

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Service Source

Troubleshooting

Apple Color Printer

Troubleshooting General/ - 1

General

The Symptom Charts included in this chapter will help you
diagnose specific symptoms related to your product. Because cures
are listed on the charts in the order of most likely solution, try
the first cure first. Verify whether or not the product continues to
exhibit the symptom. If the symptom persists, try the next cure.
(Note: If you have replaced a module, reinstall the original module
before you proceed to the next cure.)

If you are not sure what the problem is, or if the Symptom Charts
do not resolve the problem, refer to the Flowchart for the product
family.

For additional assistance, contact Apple Technical Support.

Troubleshooting Symptom Charts /Operation - 2

Symptom Charts

Operation

No power 1 Check power cable connections.

2 Replace power cord.
3 Replace fuse.
4 Replace power supply (international repairers only) or

return printer to Apple for service.

Troubleshooting Symptom Charts /Operation - 3

Does not print 1 Turn on printer and restart computer. Make sure ON LINE

is displayed.
2 Press On Line key.
3 Check interface cable connections.
4 If error message is displayed, see “Error Messages” in

this chapter.
5 Check SCSI setting.
6 Use Apple-approved SCSI cable.
7 Check that SCSI connections are terminated properly.
8 Replace printer driver.
9 Replace SCSI card assembly or return printer to Apple

for service.

Troubleshooting Symptom Charts /Paper - 4

Paper

Paper sticks together 1 Remove excess sheets from paper tray.

2 Use specified media only.
3 Check that settings in Page Setup menu are correct.

Paper skews 1 Remove excess sheets from paper tray.

2 Use specified media only.
3 Stack paper flush against left side of paper tray and adjust

paper guide.
4 Check rollers. Clean or replace if necessary (international

repairers only).

Paper jams and
printer displays
“13 CHECK PAPER”
error code

Remove paper from tray and press On Line key. If jammed paper
does not eject, carefully remove it by hand.

Troubleshooting Symptom Charts /Paper - 5

Paper jams during loading, before printing

Paper jams inside printer

Paper jams during output, after printing

Carefully remove paper by hand.

Remove top cover. Pull out paper in direction of paper output.
(Do not pull paper back toward you. Doing so could bend stainless
steel bar that holds paper down.)

Pull out paper in direction of paper output.

Troubleshooting Symptom Charts /Paper - 6

Blurring and/or smudging

1 Adjust print head position lever all the way down.
2 Use specified media only.
3 Set printer to proper printing mode. See “User Menus” in

Basics chapter.
4 Make sure print head is in correct position. If necessary,

perform the adjustments described in “Print Head Gap” in

the Adjustments chapter (international repairers only).
5 Perform the “Print Head Cleaning” procedure; see the

Additional Procedures chapter (international repairers

only).
6 Check print head gap; see “Print Head Gap” in Adjustments

chapter (international repairers only).

Troubleshooting Symptom Charts /Print Quality - 7

Print Quality

Missing dots and/or white streaks

1 Perform “Print Head Cleaning” and “Nozzle Check.”

See Additional Procedures chapter.
2 Make sure ink cartridges are set firmly.
3 Use specified media only.
4 Replace bubble-jet head unit.
5 Replace carriage board (international repairers only).
6 Replace logic board (international repairers only).

Troubleshooting Symptom Charts/Error Messages - 8

Error Messages

00 READY In on-line state, message indicates that printer is ready to accept

data. In off-line state, message indicates that printer is not
experiencing any errors.

00 READY * Print head has been properly capped and printer can be turned off.

00 IGNORE DATA Message indicates that data has been ignored and discarded. Press

Menu and < keys at same time. Printer will then return to
standard operating mode and message will change to “00 READY.”

01 TEST PRINT Printer is executing self-test print. After test print is finished,

press On Line key.

02 WARMING UP Printer is warming up. Allow approximately 30 seconds before

printing.

Troubleshooting Symptom Charts/Error Messages - 9

03 RESET Printer is restoring its setting to power-up status.

08 CLEANING Printer is cleaning print head.

10 CHECK PAPER Paper has run out or is inserted improperly. Load paper into

paper feed.

40 SERVICE 1 Check SCSI cable.

2 Check SCSI terminator.
3 Replace SCSI card assembly.
4 Replace logic board (international repairers only) or return

printer to Apple for service.

Troubleshooting Symptom Charts/Error Messages - 10

50 SERVICE 1 Check carriage motor.

2 Remove any obstructions in carriage drive path.
3 Replace print timing slit (international repairers only).
4 Replace encoder unit (international repairers only).
5 Replace carriage board (international repairers only).
6 Replace logic board (international repairers only) or return

printer to Apple for service.

51 SERVICE 1 Check carriage motor.

2 Remove any obstructions in carriage drive path.
3 Replace print timing slit (international repairers only).
4 Replace encoder unit (international repairers only).
5 Replace carriage board (international repairers only).
6 Replace logic board (international repairers only).
7 Replace purge unit (international repairers only) or return

printer to Apple for service.

Troubleshooting Symptom Charts/Error Messages - 11

52-55 SERVICE 1 Check bubble-jet head unit connection.

2 Replace bubble-jet head unit.
Error 52 Black bubble-jet head unit
Error 53 Cyan bubble-jet head unit
Error 54 Magenta bubble-jet head unit
Error 55 Yellow bubble-jet head unit
3 Return printer to Apple for service.

56-59 SERVICE 1 Check bubble-jet head unit connection.

2 Replace bubble-jet head unit.
Error 56 Black bubble-jet head unit
Error 57 Cyan bubble-jet head unit
Error 58 Magenta bubble-jet head unit
Error 59 Yellow bubble-jet head unit
3 Return printer to Apple for service.

Troubleshooting Symptom Charts/Error Messages - 12

5A-5D SERVICE 1 Replace bubble-jet head unit.

Error 5A Black bubble-jet head unit
Error 5B Cyan bubble-jet head unit
Error 5C Magenta bubble-jet head unit
Error 5D Yellow bubble-jet head unit
2 Return printer to Apple for service.

5E SERVICE 1 Unlock carriage lock lever located under printer cover.

2 Check carriage for binding. Perform “Print Head Gap” in the

Adjustments chapter (international repairers only).
3 Replace carriage drive motor (international repairers only).
4 Replace logic board (international repairers only) or return

printer to Apple for service.

Troubleshooting Symptom Charts/Error Messages - 13

5F SERVICE 1 Unlock carriage lock lever located under printer cover.

2 Check carriage for binding. If necessary, perform “Print

Head Gap” in the Adjustments chapter (international

repairers only).
3 Replace carriage drive motor (international repairers only).
4 Replace logic board (international repairers only) or return

printer to Apple for service.

61 SERVICE Replace logic board (international repairers only) or return

printer to Apple for service.

61 SERVICE Replace logic board (international repairers only) or return

printer to Apple for service.

63 SERVICE Replace logic board (international repairers only) or return

printer to Apple for service.

Troubleshooting Symptom Charts /Error Messages - 14

65 SERVICE 1 Replace logic board (international repairers only).

2 Replace control panel (international repairers only).
3 Replace ribbon cables (international repairers only) or

return printer to Apple for service.

Note:

Printer beeps a number of times while displaying this

error code.

66 SERVICE Replace logic board (international repairers only) or return

printer to Apple for service.

68 SERVICE Replace logic board (international repairers only) or return

printer to Apple for service.

72 SERVICE Replace logic board (international repairers only) or return

printer to Apple for service.

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Service Source

T ak e Apart

Apple Color Printer

Take Apart Covers - 1

Covers

Printed Paper Guide

Paper Support

No preliminary steps are
required before you begin
this procedure.

Note:

This procedure covers
the removal of all covers on
the printer.

1 Remove the paper

support.

2 Pull up the printed

paper guide.

Take Apart Covers - 2

3 Pull the front cover

toward you and lift off
the cover.

Front Cover

Take Apart Covers - 3

4 Lift off the printer cover

unit.

5 Carefully place the

Printer Cover

Unit

printer cover unit with
the inner cover rollers
facing up.

Take Apart Covers - 4

6 Using a small

screwdriver, push out
the two latches.

7 Pull up and remove the

inner cover roller.

Inner Cover Roller

Printer Cover
Unit

Take Apart Covers - 5

8 Loosen the two screws

Upper Cover

and lift off the upper
cover.

Take Apart Covers - 6

9 Press the center of the

ink cartridge cover and
release the coupler.

10 Push down and remove

the ink cartridge cover.

Coupler

Ink Cartridge
Cover

Take Apart Covers - 7

11 Using a small

screwdriver, push in the

Latch

two small latches and
press up the coupler.

Latch

Coupler

Take Apart Covers - 8

12 Remove the two rear

cover mounting screws.

13 Lift up the front of the

rear cover.

14 Pull back the rear cover

and remove the cover.

Rear Cover

Take Apart Control Panel (Intl. Only) - 9

Control Panel (Intl. Only)

Before you begin, remove
the covers.

Control Panel

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart Control Panel (Intl. Only) - 10

1 Lift the plate on the

purge unit.

2 Push down the locking

Carriage

tab and move the
carriage out of home
position.

Print Heads
Locking Tab
Plate

Purge Unit

Caution:

The print heads
are now uncapped. Do not
leave them uncapped for
more than 12 hours or
they will dry out.

Take Apart Control Panel (Intl. Only) - 11

3 Push in the latch, lift

the front of the control
panel, and pull it toward

Control Panel

you.

4 Lay the control panel in

front of the printer.

Latch

Take Apart Control Panel (Intl. Only) - 12

5 Pull the latch and lift up

the control panel base.

Control Panel Base

Latch

Take Apart Control Panel (Intl. Only) - 13

6 Disconnect the control

panel connector from the
right connector card.

7 Remove the control

panel.

Right Connector Card

Control Panel
Connector

Control Panel

Take Apart Bubble-Jet Head Units - 14

Bubble-Jet Head Units

Before you begin, remove

Bubble-Jet

Head Units

the covers.

Caution

precautions in Bulletins/
Safety.

: Review the ESD

Caution:

on your hands or clothes.
Although the ink is water
soluble, it contains dyes that
will stain.

Do not get the ink

Take Apart Bubble-Jet Head Units - 15

Print Heads
Locking Tab
Plate

Purge Unit

Carriage

Caution:

To prevent the
print nozzles from
clogging, do not touch or
wipe them.

1 Lift the plate on the

purge unit.

2 Push down the locking

tab and move the
carriage out of home
position.

Caution:

The print heads
are now uncapped. Do not
leave them uncapped for
more than 12 hours or
they will dry out.

Take Apart Bubble-Jet Head Units - 16

3 Using a side-to-side

motion, lift up the
carriage board holder.

Carriage
Board
Holder

Take Apart Bubble-Jet Head Units - 17

4 Release the tabs on both

sides of the print head
cover.

5 Pull the cover

downward and remove it.

Tab

Tab

Print Head
Cover

Take Apart Bubble-Jet Head Units - 18

6

Caution:

Handle each
bubble-jet head unit by
the top edge only. To
prevent the print
nozzles from clogging, do
not touch or wipe them.

Note:

Bubble-Jet
Head Unit

Before removing
any of the bubble-jet
head units, label a sheet

Top

Edge

of paper with each
color. Then place each
unit on the appropriate
label.

Grasp the top edge of one
of the bubble-jet head
units and gently pull out

Print Nozzles

the unit.

Take Apart Bubble-Jet Head Units - 19

7 Repeat for each of the

three remaining units.

Top

Edge

Print Nozzles

Bubble-Jet
Head Unit

Replacement Note:

Before installing a new
bubble-jet head unit,
remove the orange tape
and grey rubber cap
that cover the print
nozzles. Do not shake the
new bubble-jet head or
the ink may leak.

Take Apart Carriage Assembly (Intl. Only) - 20

Carriage Assembly (Intl. Only)

Before you begin, remove
the following:

• Covers

• Control panel

Carriage Assembly

Caution

precautions in Bulletins/
Safety.

: Review the ESD

Take Apart Carriage Assembly (Intl. Only) - 21

1 Lift the plate on the

purge unit.

2 Push down the locking

Carriage

tab and move the
carriage out of home
position.

Print Heads
Locking Tab
Plate

Purge Unit

Caution:

The print heads
are now uncapped. Do not
leave them uncapped for
more than 12 hours or
they will dry out.

Take Apart Carriage Assembly (Intl. Only) - 22

3 Disconnect the two cable

connectors CNCA2 and
CNCA1 from the right
connector card.

CNCA2

CNCA1

Right Connector Card

Take Apart Carriage Assembly (Intl. Only) - 23

Reservoir Overflow
Connector

Reservoir Supply

Connector

Caution:

Make sure the
reservoir connectors
are secured. If they are
not, ink could spill into
the printer.

4 Remove the reservoir

supply and reservoir
overflow connectors and
hook them onto the
carriage assembly.

Take Apart Carriage Assembly (Intl. Only) - 24

5 Remove the ground

screw.

6 Disconnect the carriage

motor connector.

Ground Screw

Assembly

Carriage
Motor
Connector

Take Apart Carriage Assembly (Intl. Only) - 25

7 Remove the screw and

push in the mounting

Ink Tubes

tab on one side of the
carriage assembly.

Screw

Repeat for other side.

Mounting

Tab

8 Lift out the carriage

assembly.

Replacement Note:

Make
sure the ink tubes are
not caught under the
carriage assembly.

Take Apart Carriage Board (Intl. Only) - 26

Carriage Board (Intl. Only)

Before you begin, remove
the covers.

Carriage Board

Caution

precautions in Bulletins/
Safety.

: Review the ESD

Take Apart Carriage Board (Intl. Only) - 27

1 Lift the plate on the

purge unit.

2 Push down the locking

Carriage

tab and move the
carriage out of home
position.

Print Heads
Locking Tab
Plate

Purge Unit

Caution:

The print heads
are now uncapped. Do not
leave the heads uncapped
for more than 12 hours
or they will dry out.

Take Apart Carriage Board (Intl. Only) - 28

3 Using a side-to-side

motion, lift up the
carriage board holder.

Carriage
Board
Holder

Take Apart Carriage Board (Intl. Only) - 29

4 Push in the two latches

and remove the carriage
board cover.

Carriage Board Cover

Latch

Take Apart Carriage Board (Intl. Only) - 30

5 Disconnect the following

connectors from the
carriage board:

CNPW

• CNCA1

• CNCA2

• CNPW

CNCA1

Carriage Board

Take Apart Carriage Board (Intl. Only) - 31

6 Set the carriage position

lever to position 2.

Position 2

Carriage Position Lever

Take Apart Carriage Board (Intl. Only) - 32

Carriage

Board Holder

Caution:

To avoid
damaging the carriage
position lever, make
sure you do not use
excessive force when
removing the carriage
board holder.

7 Carefully pull out the

sides of the carriage
board holder.

8 Lift up and remove the

holder from the
carriage.

Take Apart Carriage Board (Intl. Only) - 33

9 Carefully push apart the

carriage board holder
and slide out the carriage
board.

Side Catch

Bottom Catch

Carriage Board

Holder

Carriage Board

Replacement Note:

Make
sure the board seats in
the bottom and side
catches.

Take Apart Carriage Drive Motor (Intl. Only) - 34

Carriage Drive Motor (Intl. Only)

Before you begin, remove
the covers.

Carriage Drive

Motor

Caution

precautions in Bulletins/
Safety.

: Review the ESD

Take Apart Carriage Drive Motor (Intl. Only) - 35

1 Lift the plate on the

purge unit.

2 Push down the locking

Carriage

tab and move the
carriage out of home
position.

Print Heads
Locking Tab
Plate

Purge Unit

Caution:

The print heads
are now uncapped. Do not
leave the heads uncapped
for more than 12 hours
or they will dry out.

Take Apart Carriage Drive Motor (Intl. Only) - 36

3 Loosen the screw.

4 Push in the idler roller

bracket and remove the
belt from the carriage
drive motor.

Idler Roller

Bracket

Screw

Belt

Take Apart Carriage Drive Motor (Intl. Only) - 37

5 Disconnect the carriage

motor connector.

6 Remove the mounting and

ground screws.

7 Remove the carriage

Mounting Screw

Ground Screw

Carriage

Drive

Motor

Carriage
Motor
Connector

drive motor.

Take Apart Print Timing Slit (Intl. Only) - 38

Print Timing Slit (Intl. Only)

Before you begin, remove
the covers.

Print Timing Slit

Caution

precautions in Bulletins/
Safety.

: Review the ESD

Take Apart Print Timing Slit (Intl. Only) - 39

1 Carefully remove the

print timing slit from

Print Timing Slit

the tab on one side of the
carriage assembly.

Tab

Take Apart Print Timing Slit (Intl. Only) - 40

2 Carefully remove the

print timing slit from
the tab on the other side
of the carriage assembly.

3 Remove the print timing

Triangle

slit from the carriage
assembly.

Print Timing

Slit

Replacement Note:

Make
sure the triangle on the
print timing slit is
facing up.

Take Apart SCSI Card Assembly - 41

SCSI Card Assembly

Before you begin, remove

SCSI Card

Assembly

the covers.

Caution

precautions in Bulletins/
Safety.

: Review the ESD