compaq lte elite User Manual

6.3 Features 
The Compaq SmartStation provides the following features:
o Motorized docking mechanism for easy docking and undocking of the
computer.
o The following sensors to help prevent improper docking or undocking:
- Computer-present sensor (to detect when the computer is in the docking
bay)
- Computer status sensor (to determine the on, off, or Standby status of
the computer)
- Motor loaded/unloaded sensor (to verify that the computer is completely
docked or undocked)
- A PCMCIA card sensor to...

o DC power to the computer when it is docked
o Ability to fast charge the battery pack in the computer whether the
expansion base is on or off
o Ability to fast charge an additional Compaq LTE Elite battery pack in the
SmartStation battery charging compartment
o Two full-sized slots for 8- or 16-bit Industry Standard Architecture
(ISA) expansion boards
o Two internal half-height drive bays
o Ability to start a docked Compaq LTE Elite computer from the computers
hard drive or from an IDE hard drive in the...

o Manual eject override mechanism to allow the computer to be removed from
the expansion base in the event of mechanical or power failure
6.4 External Switches, Sensors, And LEDS 
This section covers the expansion base external switches, sensors, and LEDs
(Figure 6-3).
1. Power switch
2. PCMCIA card sensor receiver
3. PCMCIA card sensor emitter
4. Computer status sensor
5. Power LED
6. Hard drive LED
7. Eject switch
8. Battery charger LED
Power Switch
The expansion base has a momentary type power switch...

Eject Switch
The expansion base has a momentary type eject request switch [7] (Figure
6-3) on the front right of the unit that undocks the computer from the
expansion base. Refer to Eject Switch in Section 6.6 for more
information.
PCMCIA Card Sensor (Emitter and Receiver)
The PCMCIA card sensor is a two-part sensor consisting of a receiver [2]
and an emitter [3] (Figure 6-3). The sensor prevents undocking when it
detects that a PCMCIA card or cable extends beyond the safe limits of
the PCMCIA slot in...

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A/B and C/D Drive Selection Switches
The A/B and C/D drive selection switches are mounted on the system board
and accessible from the outer rear panel (Figure 6-4).
The A/B drive selection switch sets an optional diskette drive in the
expansion base to operate as logical drive A (for using bootable diskettes)
or as logical drive B. The C/D drive selection switch sets an optional IDE
hard drive in the expansion base to be...

This section covers external input/output (I/O) connectors and the internal
drive bay connectors for the Compaq SmartStation. Refer to Appendix A for
connector pin assignments.
External I/O Connectors
1. SCSI-2
2. Ethernet TPE RJ-45
3. Ethernet AUI DB-15
4. Parallel
5. Serial
6. Mouse
7. External keyboard
8. External monitor
9. AC power
198-Pin External Options Connector
The 198-pin external options connector (Figure 6-6) handles the entire
electrical interface between the expansion base and the...

Internal Drive Connectors
Drive cables connect to the following connectors on the vertical circuit
board or the system board:
o 40-pin IDE hard drive signal connector (vertical circuit board)
o 34-pin diskette/tape drive signal connector (vertical circuit board)
o 4-pin diskette/tape drive power connector (vertical circuit board)
o 50-pin SCSI-2 connector (system board)
For ease of identification, the vertical circuit board (also known as the
backplane board) and system board (also known as the...

The following connectors, switches and sensors are on the system board
(Figure 6-7):
1. Internal SCSI-2 connector
2. Card edge connector for the vertical circuit board
3. Computer-present sensor
4. 198-pin external options connector for handling power and signal
information between the expansion base and computer
5. SCSI-2 connector
6. Ethernet RJ-45 connector
7. Ethernet AUI DB-15 connector
8. Motor position sensor
9. Connector for battery contacts board for the battery charger
10. Connector for the...

11. Connector for docking mechanism motor
12. All pass-through I/O connectors
13. A/B switch
14. C/D switch
The following controllers are on the system board:
o Ethernet controller
o SCSI-2 controller
o Microcontroller (controls the battery charger, power up/down sequencing,
motor for the docking mechanism, and plug and play features for docking
and undocking)
Computer-Present Sensor
The computer-present sensor [3] (Figure 6-7) is an optical sensor on the
system board that detects when a computer is...

The battery charger [1] (Figure 6-8), controlled by the system board,
charges a Compaq LTE Elite spare battery pack. The battery charger operates
whenever the expansion base is connected to an electrical outlet, whether
the expansion base is on or off. In addition to charging the spare battery
pack in the battery charger, the expansion base simultaneously charges the
battery pack in the docked computer, whether the system is on or off.
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