Service manual

5. DISASSEMBLY AND ASSEMBLY
Service Manual BSM-4100 5.23
Installing the Options
Installing QM-421P Flash
Disk Card into the Slot on
the MAIN Board
Perform the following procedure after the “Opening the Instrument” procedure.
1. Remove the 2 screws (marked with arrow 2 in the following picture) which
secure the inverter board.
2. Pull out the inverter board and put it beside the alarm indicator.
3. Remove the screw (marked with arrow 4 in the step 1 picture) which secure the
MAIN board. This screw prevents disconnection of the card.
CAUTION
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••
• Since a high voltage, approximately 600 to 800 V AC, is applied to the
cable between the inverter board and LCD unit, you may have an
electrical shock if you touch the inverter board within a few minutes
after the power is turned off. Wait 5 minutes or more to touch the
inverter board after the power is turned off.
••
••
• Do not scratch or damage the inverter cable with the edge of the
chassis or tools.