Visual display unit (VDU)
Case study : CRT: Philips 7CM5299

[CRT VDU]

Disconnect the monitor from the mains supply if the monitor is not to be used for an extended period of time.
Do not attempt to remove the back cover, as you will be exposed to a shock hazard. The back cover should only be removed by qualified service personnel.
Do not place objects on top of the monitor cabinet, which could fall into vents or which could cover them and prevent proper cooling of the monitor's electronics.
Do not expose the monitor to rain or excessive moisture to avoid the risk of shock or permanent damage to the set.
Do not use alcohol or ammonia based liquid to clean the monitor. If necessary, clean with a slightly damp cloth. Disconnect the monitor from the mains supply before cleaning.
Consult a service technician if the monitor does not operate normally when the operating instructions are followed.

make sure mains plug and socket are easily accessible
do not place monitor near a heat source
to prevent overheating, ensure that the ventilation openings of the monitor are not covered.

[connecting the VDU]

A fixed 15-pin D-sub connector of the video signal cable is connected to the computer at the video connector on the video card, and fixed firmly with the screws on the plug.
AC power is turned off.
connect the 15pin D-sub connector of the video signal cable to the video connector on the video card, and fix firmly with the screws on the plug.
connect to the mains, checking that the correct voltage is selected.

[VDU controls]

Picture tube	14 inch, 900 deflection, non-glare, black matrix, light transmission 57%,phosphor P22 medium short, dotted pitch 0.28 mm.
Screen area	250 mm (H) x 188 mm (V)
Line (Horizontal) frequency	31.5/35.2/35.5 KHz
Raster (Vertical) frequency	50 - 100 Hz (automatically)
Mains voltage	100 - 240 VAC , 60-50 Hz
Power consumption	80 watt max.
Dot rate	35 MHz
Pedestal	Tilt - 5deg forward, 15, backward; swivel - 90deg left or right.
Unit dimension (W x H x D)	356 x 376 x 385 mm
Net weight	11 Kg
Operating condition
Temperature	Odeg C to 40deg C
Humidity	20% to 80%
Storage condition
Temperature	-25deg C to 70deg C
Humidity	20% to 95%

The 15 pin D-sub connector (male) of the signal cable for IBM systems:

Pin No.	Assignment	Pin No.	Assignment
1	Red video input	9	No pin
2	Green video input	10	Logic ground
3	Blue video input	11	Identical output -connected to pin 10
4	Identical output - connected to pin 10	12	No pin
5	Self-test input	13	H. Sync
6	Red video ground	14	V. Sync
7	Green video ground	15	No pin
8	Blue video ground