Toshiba B-EP4DL Series User manual

PRINTED IN JAPAN
TOSHIBA Potable Printer
B-EP4DL SERIES
Document No. EO18-33023
Original Sep., 2008
(Revised )
Maintenance Manual

WARNING!
Follow all manual instructions. Failure to do so could create safety hazards such as fire or
electrocution.
NOTE:
Failure to follow manual instructions or any unauthorized modification, substitution orchange to
this product will void the limited product warranty.

EO18-33023
(Revision Date: Dec. 16, 2008)
CAUTION!
1. This manual may not be copied in whole or in part without prior written permission of TOSHIBA
TEC.
2. The contents of this manual may be changed without notification.
Copyright © 2008
by TOSHIBA TEC CORPORATION
A
ll Rights Reserved
570 Ohito, Izunokuni-shi, Shizuoka-ken, JAPAN
TABLE OF CONTENTS
Page
1. UNPACKING .............................................................................................................. 1- 1
1.1 Procedure ........................................................................................................................1- 1
1.2 Checks.............................................................................................................................1- 1
2. MAJOR UNIT REPLACEMENT.................................................................................. 2- 1
2.1 Replacing the CPU PC Board .........................................................................................2- 1
2.2 Replacing the LCD Unit ...................................................................................................2- 8
2.3 Replacing the Peel-off Roller...........................................................................................2- 9
2.4 Replacing the Peel-off Sensor.......................................................................................2- 10
2.5 Replacing the Drive PC Board.......................................................................................2- 12
2.6 Replacing the Battery Terminal .....................................................................................2- 13
2.7 Replacing the Stepping Motor .......................................................................................2- 14
2.8 Replacing the Print Head...............................................................................................2- 15
2.9 Replacing the Cover Open Switch and Media Sensor (Lower) .....................................2- 17
2.10 Replacing the Media Sensor (Upper) ............................................................................2- 19
2.11 Replacing the Platen Ass’y............................................................................................2- 21
3. TROUBLESHOOTING................................................................................................ 3- 1

1. UNPACKING EO18-33023
1.1 Procedure
1- 1
1. UNPACKING
1.1 Procedure
1) Open the carton.
2) Unpack the accessories from the carton.
3) Unpack the printer.
NOTE: Keep the carton and pad for future transportation of the printer.
1.2 Checks
1) Check for damage or scratches on the machine.
2) Confirm that none of the accessories are missing.

2. MAJOR UNIT REPLACEMENT EO18-33023
2.1 Replacing the CPU PC Board
2-1
2. MAJOR UNIT REPLACEMENT
WARNING!
1. Disconnect the power cord before installing the main parts.
2. Be careful not to injure your fingers when replacing the main parts.
CAUTION!
1. Since a lot of small moulded parts are used in this printer, care must be taken not to damage or lose
them.
2. Be careful not to damage the print head while removing and reassembling.
3. In the United States, used lithium ion batteries should be returned to the store where you bought the
machine. (USA only)
4. LITHIUM ION BATTERYDISPOSE OF PROPERLY
Caution: Do not handle damaged or leaking lithium ion battery.
5. Before handling the main parts, be sure to discharge static electricity in human body through other
metals. Failure to do this may damage the CPU PC board, print head, etc..
NOTES:
1. Before replacing the main parts, print out the maintenance counter values and the parameter values and keep
the printout. (Refer to Section 4.2 Diagnostics Test in the System Mode Manual.)
After replacing, restore the setting according to the printout.
2. Use precision screwdrivers for replacing the precision components which are installed into the printer.
2.1 Replacing the CPU PC Board
1) Turn off the printer.
2) Slide the Battery Lever in the direction of the arrow, and remove the Battery Pack from the printer.
3) Remove the four Tapping Screws from the Bottom Cover.
Battery Lever
Battery Pack
T-3x10 Screw
T-3x10 Screw

2. MAJOR UNIT REPLACEMENT EO18-33023
2.1 Replacing the CPU PC Board
2-2
4) Press the Top Cover Open Button to open the Top Cover.
5) Remove the Left Side Cover in the direction of the arrow.
6) Remove the Right Side Cover and the Front Cover in the direction of the arrow, respectively.
NOTE: The Gears shown in the picture below are not secured and are easily removed. Be carefu
l
not to drop and break or lose them.
Top Cover
Top Cover Open Button
Left Side Cover
Gea
r
Right Side Cover
Front Cove
r

2. MAJOR UNIT REPLACEMENT EO18-33023
2.1 Replacing the CPU PC Board
2-3
7) Remove the Front Cover.
6) Disconnect all Connectors and FPC Cable from the CPU PC Board.
NOTE: Before disconnecting the FPC Cable, release the Connector Lock.
7) Disconnect the Earth Terminal from the Drive PC Board.
Front Cover
CPU PC Board
FPC Cable
Connector Lock
CPU PC Board
Drive PC Board
Earth Terminal

2. MAJOR UNIT REPLACEMENT EO18-33023
2.1 Replacing the CPU PC Board
2-4
8) Open the Hooks, then remove the CPU PC Board from the Front Cover.
9) Remove the screw, then remove the Earth Terminal.
10) Replace the CPU PC Board with a new one, then reassemble in the reverse order of removal.
Hook
Hook
CPU PC Board
T-2x5 Screw
Earth Terminal

2. MAJOR UNIT REPLACEMENT EO18-33023
2.1 Replacing the CPU PC Board
2-5
11) Close the front cover.
12) Mount the left side cover to the printer while fitting the tabs on the left side cover into the slots of the printer
enclosure.
Fit the tabs A to D into the slots A’ to D’.
Front Cover
Tab Tab B Tab C Tab D
A
’
B’
C’
D’
NOTES:
1. Make sure that the pins on the both sides of the front cover are fit in position, as shown in the
pictures below.
2. Do not reassemble the Front Cover while the Top Cover Open Button is pressed. Doing so may
cause the Top Cover not to open.
Pin
Top Cover Open Button
Good No Good

2. MAJOR UNIT REPLACEMENT EO18-33023
(Revision Date: Dec. 16, 2008)
2.1 Replacing the CPU PC Board
2-6
13) Mount the right side cover to the printer while fitting the tabs on the right side cover into the slots of the
printer enclosure.
Fit the tabs A to C into the slots A’ to C’.
NOTE:
It is easy to mount the left side cover if you fit the tabs from the LCD side in order, then secure the bottom
side. Be careful not to catch the cable by the cover while reassembling.
Tab
A
Tab BTab C
A
’
B’
C’
NOTE:
It is easy to mount the right side cover if you fit the tabs from the LCD side in order, then secure the
bottom side. Be careful not to catch the cable by the cover while reassembling.
Right Side Cover
Left Side Cove
r