Marquette Hellige GmbH
MicroSmart V 2.xx
Page 47
Servicing Instructions 227 470 35 B - 97.12
Replacing the battery
Open (do not cut) the two reusable cable ribbons by pressing on the attachment latch. Detach the
plug connection
G
and replace the battery.
Caution:
Use only original marquette Hellige batteries (see chapter 8, Spare Parts List)
Return defective batteries to the factory for proper disposal.
Place the battery in the compartment, tighten the cable ribbons and reconnect the plug connection
G
Replacing the recorder unit:
Open the recorder lid and take out the two screws on the base of the recorder enclosure. Detach
the plug for motor, array control and flat ribbon cable for the mark reader from the PCB -
MicroSmart. Disconnect the protective circuit connection on the power supply.
The complete recorder enclosure can now be removed.
Replacing the thermal array:
The thermal array can only be removed from the bottom of the recorder enclosure.
Carefully push the side wall of the recorder enclosure to the outside. At the same time push the
array holder forward until it detaches from its locking mechanism. Then remove the thermal
array from the top. The two springs will come undone. When re-installing the thermal array, use
pincers to lock the springs back in position.
Replacing the PCB MicroSmart
Before replacing the PCB, print out the configuration selected by the user, if possible.
With the unit open, first disconnect the plug connection
PSCON
to the power supply, then
disconnect the remaining plugs to the drive (plug connection
AB, AA, AC)
and to the ECG input
(plug connection
AH
). Then remove the two attachment screws.
Check if the solder bridge of the lithium battery of the real-time clock (BA 500) is properly
soldered. Install the new PCB and reconnect the plugs.
Setting the clock is described in the operating instructions.
Accept the configuration selected by the user (if known). If not, use the works settings.
Set the contrast with the display used.
Replacing the display
With the unit open, first detach the two attachment screws of the display. Pull the display off the
plug connection
AE
. Plug in the new display and re-attach.
