HP 990c (US) Tray Locking Mechanism, Manual Ejection, Emergency Ejection, LEDs, Auto Insertion

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Manual Ejection

The drive has a manual ejection button on the front bezel. When pressed, it activates the electrical signal to open and close the tray. The manual ejection facility functions upon power-up, but it can be disabled by the host computer through the Prevent/ Allow Medium Removal command.

Emergency Ejection

The tray is ejectable by pushing a pin or standard size paper clip into the emergency eject pinhole on the front bezel (see Figure 3). The emergency ejection mechanism functions even without power to the drive and with the prevent bit set.

Table 9 Emergency Ejection Specification

Maximum force	3.5 Kgf
Stroke of pin insertion	40 mm
Recommended diameter of pin	1.2 mm

LEDs

The drive has one LED visible on the front bezel. The use of the LED is described in Table 11 LED Protocol.

Table 11 LED Protocol

Drive State	LED
No disc inserted	OFF
Disc is loading or being ejected
Disc in, drive in standby mode	Solid Orange
Disc not readable	Blinks Orange
Decoder Fail	Blinks Orange
EEPROM Fail	Blinks Orange
DRAM Fail	Blinks Orange

Auto Insertion

The tray automatically closes when it is pushed.

Table 10 Auto Insertion Specification

Maximum force	5.5 Kgf
Stroke	3 mm
The drive is designed to respond within 1 second.
Ejecting Position
The tray is ejected approximately 64.5 mm from the front of the front bezel to the
center of the disc.

Tray Locking Mechanism

There is a locking mechanism on the tray such that when power is off and the tray is closed, the tray will be locked in a closed position. This locking mechanism has a manual override.

hp dvd-writer dvd100i Technical Support Solutions Guide 10/25/01 Physical Specifications ⇐ ⇒ 18