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       # COMPUTER MODULES, INC.
       
          BBU-IR1, BBU-IR5
       
          Card Type         Battery pack                                 
          I/O Options       DC power out                                 
          Data Bus          N/A (see technical note)                     
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function       | Label |      Function       | Label |
          |----------------------+-------+---------------------+-------|
          | 9V DC power out to   |  P4   | Battery test switch |  SW1  |
          | Turbodisc            |       |                     |       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         BATTERIES                          |
          |------------------------------------------------------------|
          |  Power   | Bank 0  | Bank 1  | Bank 2  | Bank 3  | Bank 4  |
          |----------+---------+---------+---------+---------+---------|
          |  500mAh  |   (6)   |  NONE   |  NONE   |  NONE   |  NONE   |
          |          | 1.5V AA |         |         |         |         |
          |----------+---------+---------+---------+---------+---------|
          | 1000mAh  |   (6)   |   (6)   |  NONE   |  NONE   |  NONE   |
          |          | 1.5V AA | 1.5V AA |         |         |         |
          |----------+---------+---------+---------+---------+---------|
          | 1500mAh  |   (6)   |   (6)   |   (6)   |  NONE   |  NONE   |
          |          | 1.5V AA | 1.5V AA | 1.5V AA |         |         |
          |----------+---------+---------+---------+---------+---------|
          | 2000mAh  |   (6)   |   (6)   |   (6)   |   (6)   |  NONE   |
          |          | 1.5V AA | 1.5V AA | 1.5V AA | 1.5V AA |         |
          |----------+---------+---------+---------+---------+---------|
          | 2500mAh  |   (6)   |   (6)   |   (6)   |   (6)   |   (6)   |
          |          | 1.5V AA | 1.5V AA | 1.5V AA | 1.5V AA | 1.5V AA |
          |------------------------------------------------------------|
          |      Note: Ni-cad batteries must be used. If other types   |
          |      of batteries are used the hardware or batteries could |
          |      be damaged.                                           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIAGNOSTIC LED(S)                      |
          |------------------------------------------------------------|
          | LED  | Color | Status |             Condition              |
          |------+-------+--------+------------------------------------|
          | LED1 | Green |   On   |   Board has sufficient charge to   |
          |      |       |        |          power Turbodisc           |
          |------+-------+--------+------------------------------------|
          | LED1 | Green |  Off   |   Board does not have sufficient   |
          |      |       |        |     charge to power Turbodisc      |
          |------+-------+--------+------------------------------------|
          | LED2 | Green |   On   | Batteries are receiving power from |
          |      |       |        | Turbodisc AC adapter for charging  |
          |------+-------+--------+------------------------------------|
          | LED2 | Green |  Off   | Batteries are not receiving power  |
          |      |       |        |   from Turbodisc AC adapter for    |
          |      |       |        |              charging              |
          |------------------------------------------------------------|
          |      Note: These LEDs will only function when the battery  |
          |      test switch is pushed.                                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               MISCELLANEOUS TECHNICAL NOTES                |
          |------------------------------------------------------------|
          | This card has no connectors on its card edge. It can       |
          | therefore be installed in any 16-bit format card slot. It  |
          | provides battery backup power for the Computer Modules,    |
          | Inc. Turbodisc, document number V2116.                     |
          +------------------------------------------------------------+