Marquette Hellige GmbH
MicroSmart V 2.xx
Page 46
Servicing Instructions 227 470 35 B - 97.12
6 Repair notes
6.1 Safety notes
Shock hazard. Always switch off the unit
and disconnect the power plug before
opening the MicroSmart. Do not reconnect
the power plug when the unit is open.
WARNING!
Shock hazard. Before replacing the primary
fuses in the line inlet module, always switch
off the unit and disconnect the power plug.
WARNING!
When replacing electronic components, always implement
ESD protection.
Return replacement PCBs only in
ESD packagings.
Return defective or exhausted batteries to the factory for
proper disposal.
6.2 Component replacement
For the following items, observe the safety notices in chapter 4.1.
Caution
:
To avoid damage to the thermal array, always fully discharge with a resistor
approx. 68 the condenser C1 (located on the PCB) before replacing/exchanging
the PCB or the thermal array.
Opening the unit
To open the MicroSmart, remove the 4 attachment screws on the base of the unit, open the paper
flap, carefully lift off the upper shell of the enclosure, disconnect the keyboard.
When reassembling the unit, make sure that none of the cables are pinched.
Replacing the Lithium battery
By replacing the Lithium-Battery heed on the polarity.
Caution:
Use only original marquette Hellige batteries (see chapter 8, Spare Parts List)
Return empty batteries to the factory for proper disposal.
