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Siemens Simatic PG 740 Manual page 61

Programming device
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Caution
!
Risk of damage!
The electronic components of the printed-circuit boards are highly sensitive
to electrostatic discharge. When handling the boards or cards, you must
follow the guidelines for electrostatically sensitive components (ESD
guidelines) at the end of this book.
Installing the SIMM
Plug the SIMM memory cards in as follows:
Cards
1. First open the unit as described in Section 4.1.
2. Before plugging the cards in, you must take out any expansion modules
3. Plug the cards in vertically, making sure the cut-out on the connector end
4. Gently press the card downwards at an angle until it locks into place.
Caution
!
Risk of short-circuit!
Incorrect insertion of the SIMM card may result in destruction of the card
and the motherboard.
Ensure that the contacts of the SIMM card and the receptacle are flush.
Programming Device PG 740
C79000-G7076-C742-01
already installed, the bracing and the motherboard.
of the SIMM card engages properly.
Make sure that the contacts are positioned correctly (see Figure).
SIMM card inserted correctly
PG 740 Expansions
SIMM card inserted incorrectly,
short-circuit between the contacts
4-13
4

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