HP LP2065 Service Manual

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EMI
COMPONENTS
LINE
100 ~ 240V
INPUT RECTIFIER
AND FILTER
ENERGY
TRANSFER
OUTPUT RECTIFIER
AND FILTER
18V
5V
GND
SIGNAL
COLLECT-
ON
PHOTO
INVERTER CIRCUIT
High Voltage output
18V
COUPLER
ISOLATION
PWM CONTROL
CIRCUIT
HVDC
100KHz
PRIMARY SECONDARY
50 ~ 60Hz
Operation description_LIPS
LIPS Board Block Diagram
1. EMI components.
This part contains of EMI components to comply with global marketing EMI standards like FCC, VCCI CISPR, the
circuit included a line-filter, across line capacitor and of course the primary protection fuse.
2. Input rectifier and filter.
This part function is for transfer the input AC voltage to a DC voltage through a bridge rectifier and a bulk capacitor.
3. Energy Transfer.
This part function is for transfer the primary energy to secondary through a power transformer.
4. Output rectifier and filter.
This part function is to make a pulse width modulation control and to provide the driver signal to power switch, to
adjust the duty cycle during different AC input and output loading condition to achieve the dc output stabilized, and
also the over power protection is also monitor by this part.
5. Photo-Coupler isolation.
This part function is to feed back the DC output changing status through a photo transistor to primary controller to
achieve the stabilized DC output voltage.
6. Signal collection.
This part function is to collect the any change from the DC output and feed back to the primary through photo
transistor.
7. Inverter
The inverter converts from DC18V to AC 700V and operate back-light lamp of module.

HP LP2065 Specifications

General

3D	Yes
Pixel pitch	0.255 x 0.255 mm
Response time	8 ms
Display diagonal	20.1 \
Display resolution	1600 x 1200 pixels
Vertical scan range	48 - 85 Hz
Horizontal scan range	30 - 94 kHz
Contrast ratio (dynamic)	-
Contrast ratio (typical)	800:1
Display brightness (typical)	300 cd/m²
USB hub version	2.0
DVI-I ports quantity	2
VGA (D-Sub) ports quantity	0
USB Type-A downstream ports quantity	5
LED indicators	Power
Tilt angle range	-5 - 25 °
Cable lock slot type	Kensington
Panel mounting interface	100 x 100 mm
Power consumption (standby)	2 W
Power consumption (typical)	75 W
Storage temperature (T-T)	10 - 60 °C
Operating temperature (T-T)	10 - 35 °C
Storage relative humidity (H-H)	5 - 85 %
Operating relative humidity (H-H)	20 - 80 %
Certification	TCO'03, TUV-Ergo, UL, VCCI, CE, ISO 13406-2
Country of origin	China
Market positioning	Business

Weight and Dimensions

Depth (with stand)	220 mm
Height (with stand)	425 mm
Weight (with stand)	9200 g
Depth (without stand)	87 mm
Width (without stand)	443 mm
Height (without stand)	345 mm
Weight (without stand)	5750 g