Reliability; Mechanical Design For Tco 03; Environment Protection Design; Acoustical Noise - BenQ Q7C3 Service Manual

Q7C3 LCD Monitor Service Guide
-DNSF compliance...EN55022, Class B.
-MPR2 compliance
- TCO99
-C-Tick
-BSMI
-EPA
2. The sample for EMI agency approval should be under 4 dB of the limit.
The production pilot run units should be under 3 dB of the limit.
The mass production units should be under 1 dB of the limit.

2.7 Reliability

1. The prediction MTBF of display unit shall be greater than 60,000 hours excluding the lamp.(at 25 ℃ )
2. Lamp life time : 40,000 hrs typical at which brightness of lamp is 50% compare to that of initial value at

2.8 Mechanical Design for TCO 03:

1) Front Frame Reflectance:
* diffuse reflectance: ≦ ±10%
*
Gloss≦ ± 2% gloss unit
2) Labeling of plastics:
Plastic weight > 25g shall be marked in accordance with ISO11469
3) Variety of Plastic:
Type of plastic material is synonymous with the term basic polymer used in ISO1043-1. For blends of plastics e.g.
PC+ABS, all weight ratios are considered to be the same type of material.
4) Painting of Plastic:
Plastic materials weighing more than 25 grams included in the VDU. Different kinds of adapters are defined as parts of
VDU. Printed wiring board laminates and the flat panel itself are excluded.
5) Metallization of Plastic Housing:
* Metallized name-plates and control knobs are accepted.
6) Plastic components > 25g shall not contain retardants of organically bound chloride or bromide.

2.9 Environment Protection Design:

Product is Per ES 715-c49 Environment Design Guide

2.10 Acoustical Noise

With the display operating, the issue of sound measured is contained within 40 dB/A in the audible field.

3. Input / Output Signal Specification

3.1 Input Signal Requirements

3.1.1 Signal cable (Directly attached to unit)

3.1.1.1 Video Inputs:
(1) DSUB –digital Signal Inputs
15pin D-sub connector is on the captive signal cable for IBM VGA, compatible graphic adapters.
The pin assignment of this connector is described as below:
7.0mA and 25 ℃ .
10
15
1
5
6
11
Engineering Specification
9