Datenblatt-pdf.com


W1934S Schematic ( PDF Datasheet ) - LG

Teilenummer W1934S
Beschreibung Color Monitor
Hersteller LG
Logo LG Logo 




Gesamt 49 Seiten
W1934S Datasheet, Funktion
Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. :
MODEL:
W1934S
(W1934S-SNI/W1934S-BNI.Axx*QP)
xx * means sales region and module type
(AxxIQP: INL 5ms, AxxQQP: CMO 5ms, AxxYQP: IVO 5ms)
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
http://www.DataSheet4U.net/
*To apply the MSTAR Chip.
1
datasheet pdf - http://www.DataSheet4U.net/






W1934S Datasheet, Funktion
Circuit Board Foil Repair
Excessive heat applied to the copper foil of any printed
circuit board will weaken the adhesive that bonds the foil to
the circuit board causing the foil to separate from or
"lift-off" the board. The following guidelines and
procedures should be followed whenever this condition is
encountered.
At IC Connections
To repair a defective copper pattern at IC connections use
the following procedure to install a jumper wire on the
copper pattern side of the circuit board. (Use this
technique only on IC connections).
1. Carefully remove the damaged copper pattern with a
sharp knife. (Remove only as much copper as
absolutely necessary).
2. carefully scratch away the solder resist and acrylic
coating (if used) from the end of the remaining copper
pattern.
3. Bend a small "U" in one end of a small gauge jumper
wire and carefully crimp it around the IC pin. Solder the
IC connection.
4. Route the jumper wire along the path of the out-away
copper pattern and let it overlap the previously scraped
end of the good copper pattern. Solder the overlapped
area and clip off any excess jumper wire.
At Other Connections
Use the following technique to repair the defective copper
pattern at connections other than IC Pins. This technique
involves the installation of a jumper wire on the
component side of the circuit board.
1. Remove the defective copper pattern with a sharp
knife.
Remove at least 1/4 inch of copper, to ensure that a
hazardous condition will not exist if the jumper wire
opens.
2. Trace along the copper pattern from both sides of the
pattern break and locate the nearest component that is
directly connected to the affected copper pattern.
3. Connect insulated 20-gauge jumper wire from the lead
of the nearest component on one side of the pattern
break to the lead of the nearest component on the
other side.
Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper wire
is dressed so the it does not touch components or
sharp edges.
http://www.DataSheet4U.net/
6
datasheet pdf - http://www.DataSheet4U.net/

6 Page









W1934S pdf, datenblatt
DESCRIPTION OF BLOCK DIAGRAM
1. Video Controller Part.
This part amplifies the level of video signal for the digital conversion and converts from the analog video signal to the
digital video signal using a pixel clock.
The pixel clock for each mode is generated by the PLL.
The range of the pixel clock is from 25MHz to 135MHz.
This part consists of the Scaler, ADC convertor and LVDS transmitter.
The Scaler gets the video signal converted analog to digital, interpolates input to 1440 X 900 resolution signal and
outputs 8-bit R, G, B signal to transmitter.
2. Power Part.
This part consists of the one 3.3V, and one 1.8V regulators to convert power which is provided 5V in Power board.
14V is provided for inverter, 14V is provided for LCD panel and 5V for micom.
Also, 5V is converted 3.3V and 1.8V by regulator. Converted power is provided for IC in the main board.
The inverter converts from DC14V to AC 700Vrms and operates back-light lamps of module.
3. MICOM Part.
This part is include video controller part. And this part consists of EEPROM IC which stores control data, and the
Micom which imbedded in scaler IC.
The Micom distinguishes polarity and frequency of the H/V sync are supplied from signal cable.
The controlled data of each modes is stored in EEPROM.
http://www.DataSheet4U.net/
12
datasheet pdf - http://www.DataSheet4U.net/

12 Page





SeitenGesamt 49 Seiten
PDF Download[ W1934S Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
W1934SColor MonitorLG
LG

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche