3.3 Power Supply Requirements
(6) External light source
Mount the optical disk drive away from strong light sources (e.g., camera flash).
(7) System ground (handling of SG and FG)
The optical disk drive must be grounded to the signal ground (SG) of the power supply of the user's system. This SG line must be supplied with the system as well as the power line.
The optical disk drive can be mounted in a 120 mm (5 inch) device bay of the PC chassis using either a metal frame or a plastic (nonconductive material) frame.
If a plastic frame is used, the personal computer's FG and the optical disk drive's FG are not shorted. Consequently, the static electricity tolerance is inferior to that realized when a metal frame is used. Fujitsu recommends using a metal frame. In particular, a metal frame must be used especially when high static electricity tolerance is required.
3.3 Power Supply Requirements
(1) Allowable input voltage and current
The DC power supply input voltage must satisfy the requirements described in Section 2.1.3, "Environmental and power requirements" when measured at the power supply connector pin (receiving end) of the optical disk drive (For other requirements, see items (4) and (5) below).
(2) Current waveform (reference)
Figure 3.8 shows the current waveform while a disk is inserted.
