HA028909U180
Issue 2 Dec 06
HA028909U180
Issue 2 Dec 06
180 mm PAPERLESS GRAPHICS RECORDER: SERVICE INSTRUCTIONS 180 mm PAPERLESS GRAPHICS RECORDER: SERVICE INSTRUCTIONS
Display flexi
Touch screen flexi
Stylus holder
Service instructions
180 mm Paperless graphic recorders
INTRODUCTION
This document describes the disassembly of the 'front end' of a 180 mm paperless graphic recorder,
down as far as the display backlight replacement. Removal of the main 'micro' board and backlight
inverter board are included, but for replacement/retrofit instructions for i/o boards, the power supply
unit and the Serial communications and USB options the document HAHA028908U180 should be re-
ferred-to.
SAFETY PRECAUTIONS
Ensure that the recorder is isolated from supply voltage for at least 15 minutes before starting to work
on it. This will allow the high voltages associated with the inverter board to dissipate safely and will
also allow the power supply unit to cool down. The user should be aware, however, that areas of high
temperature may exist even after this period has elapsed.
STATIC ELECTRICITY
CAUTION
These procedures involve the handling of components which are susceptible to damage caused
by the discharge of static electricity. All relevant personnel must be aware of static handling
procedures. It is recommended that a static safe container be available, into which any circuit
board(s) removed from the recorder may be placed.
DUST INGRESS
When replacing the display or backlight, it is essential to keep the front face of the display and the rear
face of the touch screen as clean as possible. The use of polythene or latex gloves is recommended
when handling the display unit. If possible, the replacement should be carried out in a Clean Area.
Particles of dust not only appear unsightly, but can also affect the performance of the touch screen, in
extreme circumstances, causing a continuous 'press' to be perceived by the recorder.
Specification subject to change without notice. ©Eurotherm Limited.
EUROTHERM LIMITED
Faraday Close, Durrington, Worthing, West Sussex, BN13 3PL
Telephone: +44 (0)1903 268500 Facsimile: +44 (0)1903 265982
e-mail: [email protected]
Website: http://www.eurotherm.co.uk
HA028909U180/2 (CN22991)
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Page 1
USB
Flash Card
Flap
lock
catch
USB
Flash Card
USB
SD Card
SD Card
Flap
lock
catch
USB
SD Card
SD Card
MEDIA PLATE REPLACEMENT (Cont.)
DISPLAY/ BACKLIGHT REPLACEMENT
Disconnect the backlight connector 'G'. Undo the six screws
'J' which secure the backing plate to the display housing.
Lift the backing plate/display assembly out of the housing.
Remove the stylus holder, then lay the assembly on the
workbench with the display facing upwards.
Undo the four screws 'K' which secure the display unit to
the backing plate.
If required, a new display can be fitted, and the recorder re-asembled. Otherwise, to replace the
backlighting unit, undo the screw 'L' and carefully remove the existing backlight assembly.
Fit the new back light, and secure it using screw 'L'.
Re-assemble the display to the backing plate remembering:
1. to ensure that the two flexi cables (display and touchscreen) are routed correctly through the rel-
evant apertures.
2. to re-fit the stylus holder
K
K
K
K
L
J
JJ
J
J
J
G
HA028909U180
Issue 2 Dec 06
HA028909U180
Issue 2 Dec 06
180 mm PAPERLESS GRAPHICS RECORDER: SERVICE INSTRUCTIONS 180 mm PAPERLESS GRAPHICS RECORDER: SERVICE INSTRUCTIONS
Main Board
Page 3Page 2
TOP COVER REMOVAL
With the recorder removed from the panel, remove the top plate, by removing the four Torx-headed
screws 'A' and the Pozidrive screw 'B', and then lifting the cover up and out from under the gasket 'C'.
The main board can now be accessed
C
MAIN BOARD REMOVAL
Disconnect all looms to the main board and undo its four securing screws ('D'). The board may now be
removed. If a new main board is to be fitted, and no other work is to be done on the recorder, fit the
replacement board and re-assemble the recorder. If further work is to be done continue at 'Display
Housing Removal, below.
Note: if the type of memory device is to be changed (from Flash to SD card, or vice versa), a
new 'media plate' must be fitted).
INVERTER BOARD REPLACEMENT
Note: for recorders with status levels prior to B3, inverter board relacement is non-trivial. Refer
to the manufacturer's local service centre for advice.
For recorders with status levels B3 or higher, the inverter board is removed by disconnecting the two
connectors 'F' and 'G' and removing the two screws 'H'.
MEDIA PLATE REPLACEMENT
The media plate is designed to help the user to guide the flash or SD card into its connector on the main
micro board. Fitted at the bottom of the display housing, and retained by the screen plate, this flexible
strip also has cutouts for the USB port and for the lock catch (if fitted) and also contains areas which
allow the status LEDs to be viewed.
The variants are shown on page 4, as viewed from the inside of the recorder.
Remove the six screws 'J' which secure the backing plate to the display unit. The media plate can now
be replaced as required.
Display flexi
Touch screen flexi
H
Stylus holder
Inverter board
Media plate
G
F
J
J
J
J
J
DISPLAY HOUSING REMOVAL
Undo the six Torx-headed screws 'E' and carefully move the display housing away from the chassis
E
E
E
E
E
E
Input board 2 or
option slot 5 or 7
Power
Battery
Board
Serial comms
USB
Touch screen
Inverter board
Display
Input board 5 or
option slot 2 or 4
Flap lock
solenoid
I/O 0
I/O 2
I/O 1
I/O 3
Input board 6 or
option slot 6, 8 or 9
Input board 1 or
option slot 1 or 3
Front of recorder
D
D
D
D
A
A
A
A
B
J
-
1
-
2
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