DRAM Installation

Solution:

• DRAM Installation

  DRAM INSTALLATION
  
  The POS-562/562L can be installed with 4 / 8 / 16 / 32 / 64 MB 72 pins SIMM
  module DRAM or 8/ 16/ 32/ 64/ 128 MB 168-pin DIMM. The total memory size is 4 -
  128 MB.
  
  There are two on-board 72-pin SIMM sockets and one on-board168-pin DIMM socket.
  You can use either SIMM or DIMM type DRAM, they can not be used simultaneously.
  
  I. SIMM DRAM (SIM 1 and SIM 2)
  You can install up to 64 MB of SIMM DRAM on each socket for a total of 128 MB
  DRAM with two sockets filled. However, DRAM size and type must match when
  installing two SIMMs in each socket.
  
  SIMM INSTALLATION INSTRUCTION
  1. The SIMM memory modules will fit in only one orientation as shown because
  the plastic safety tab on one end of the SIMM sockets requires the notched end
  of the SIMM memory modules.
  2. Press the memory module firmly into place starting from a 45-degree angle,
  making sure that all the contacts are aligned with the socket.
  3. With your fingertips, rock the memory module into a vertical position so
  that it clicks into place. The plastic guides should go through the two
  mounting holes and the clips should snap.
  
  II. DIMM DRAM (DIM 1)
  You can also install one 168-pin DIMM (up to 128 MB DRAM) in the DIMM socket.
  The POS-562/562L can operate with only DIMM DRAM installed.
  Caution: When installing SIMM or DIMM, make sure the module is oriented
  properly. Do not use excess force during installation.
  
  DIMM INSTALLATION INSTRUCTION
  1. Insert the module as shown. Because the number of pins is different on
  either side of the breaks, the module will only fit in the orientation as
  shown. DRAM SIMM modules have the same pin contacts on both sides. SDRAM DIMM's
  have different pin contacts on each side and therefore have a higher pin
  density.
  
  2. The DIMM's must be 3.3 Volt unbuffered SDRAM. To determine the DIMM type,
  check the notches on the DIMM's (see figure below).
  
  3. The notches on the DIMM will shift between left, enter, or right t