Battery Charger; Keyboard Unit Specification; Pointing Device Specification; Battery Charger Specification - NEC Versa 550 Series Service Manual

2-12 NEC Versa 550 Specifications

Battery Charger

The following table lists battery charger specifications.
Table Section 2-13 Battery Charger Specification
Input Voltage
Support Battery
Protection
Charge Method
Max. Temperature
Timer Setting
Charge Time
Charge IC
Operating
Temperature

Keyboard Unit Specification

The following table lists keyboard specifications.
Table Section 2-14 Keyboard Unit Specification
Key Switch Type
Key Stroke
Operating Force
Key Pitch

Pointing Device Specification

The following table lists trackball specifications.
Table Section 2-15 Pointing Device Specification
Type
20V (Max.)
NiMH Battery (9.6V)
Max. Temp., Max. Timer, Max. Voltage
o
Delta T / Delta t: 1 C (min.)
o o
53 C ~ 56 C
180 Min.
Machine On: 3 hours
Machine Off: 1.5 hours
BQ2004
o o
10 C ~ 50 C
Membrane
3.0 0.5mm
50 20GF
19.05mm
19mm Trackball
PS/2 Type