Toshiba TLP510U, TLP511E Operation Description, Basic Component Outline of Liquid Crystal Panel

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4-2. Operation Description

The video signal of the odd number pixel (even number pixel) is sent to Q501 (Q503) base and supplied to pin 16 of Q502 (Q504), LM1201M. The signal is clamped at pin 16 and the pedestal voltage is adjusted at pin 6 after the DC level is stabilized and then AC level is adjusted at pin 3.

The signal is developed from pin 8, supplied to the buffer circuits of Q505 – Q507 and Q511 – Q513, and supplied to the inverted circuits of Q508, Q509, Q510, Q523, Q525 and Q510. These signals are supplied to pins 5, 6, 8, 13, 15 and 16 of 12 phases development IC. CXA2504N, Q516 and Q517 of sample-and-hold passing through the SW circuit composed of Q514 and Q515. The signals are developed from pins 37, 35, 33, 25 and 23 for each input.

The signals at pins 4, 7, 14 are used as bias input and the bias inputs set the center DC voltage of output equal to the bias voltage.

Q519 works to suppress the noise occurred at 12 phases collective input process of the panel.

4-2-2. Basic Component

4-2-1. Outline of Liquid Crystal Panel

The liquid crystal panel module is an active matrix panel with a built-in driver of multi-crystal silicon. The liquid crystal panel module is designed for use of color projec- tors in combination with an enlargement projection system and dichroic mirror.

<Basic specification>

(1)	Screen size	26.624 (W) x 19.968 (H)
(2)	Pixel number	1024 (W) x 768 (H)

(3)Applicable to XGA

(4)Monochrome panel

(5)	Drive system	H inverted drive
(6)	Dot clock	65 MHz

(7)Inverted function for UP/DOWN/LEFT/RIGHT di- rections

Table 4-2-1 Terminal description

Pin No.	Name			Pin No.	Name			Pin No.	Name			Pin No.	Name
1		DT		10		VID7		19				28	VID10
										DIRX
2				11		VID5		20		DIRX		29	VID12
		CLY
3		CLY		12		VID3		21	ENB2			30	LCCOM
4	VDDY			13		VID1		22	ENB1			31		N.C.
5	NRS2			14	VSSX			23	VSSX			32		NRG
6	NRS1			15				24		VID2		33		DY
						CLX
7	LCCOM			16		CLX		25		VID4		34		DIRY

8	VID11			17		DX		26		VID6		35
														DIRY
9	VID9			18	VDDX			27		VID8		36	VSSY

4-3

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Contents TLP511U TLP510U TLP511E TLP510E Contents Description Main Power Supply CircuitVoltage Switching Output ControlOverheat Protection Over-current ProtectionSupplement Lamp Power Supply Circuit Lamp Driver ConfigurationOptical System Name DescriptionXGA 1.3 inch 3 plates system G.B. Drive Circuit Outline1st frame 2nd lineBasic Component Outline of Liquid Crystal Panel Basic specificationOperation Description 1 Terminal description2 Input terminal function description Name FunctionMicroprocessor System Outline1 System block diagram System Microprocessor 1 Terminal functions of the system microprocessorNon-volatile Memory Control Process Power Supply Reset ProcessRemote Control Reception Process RS-232C Transmission/Reception ProcessStatus Display Process 1 Contents of the status display signals and the logicOn-screen Display Process I2C control for each kind of video system Video System Control ProcessPanel System Control Process 11-1 IC control for each kind of panel systemVarious Display Modes Drive System Control Process12-1 Each kind of the drive system IC control Applicable Signal 14-1 Applicable signalRS-232C Control Method 15-1 RS-232C connection signalsPin No Signal name Signal content 15-2 RS-232C communication conditions15-3 RS-232C command list Command ContentDigital Circuit Conv Forc ExchangeSignal Format Measurement Video Signal Format ConversionPanel Driving Timing Signal Generation PLL CircuitPLL IC CXA3106Q QX028 for RGB Signals Each IC DescriptionSync Process IC SYG QX004 PLL IC TLC2932 QX029 for Video SignalTiming Signal Generation PLD QX009 5. A/D Converter CXA3026Q QX201, QX401 and QX601INV 9. D/A Converter Picture Size of View Conversion IC T-FORCQX204, QX404, QX604 MemoryVideo Circuit Circuit Component1 Block diagram Audio Signal Input Signal Switch SectionVideo Signal RGB Signal2 Internal block diagram of CXA1855Q 1 Terminal function of TC9090AN Video Demodulation Block1. Y/C Separation Circuit 4 Pin configuration of TDA9141 Video/Color CircuitLuminance Y Signal Process Circuit Pin No Name FunctionPin Name Function Color Signal Process CircuitPicture Sharpness Correction Circuit SDA9 Block diagram of TDA4672 RGB Demodulation 4 Terminal function of TDA4780 12 Audio circuit block diagram Audio CircuitRGB Signal Switch Circuit output terminal for SYNC/G Sync Signal Process CircuitRGB Signal Amplifier Section VIDEO/VD TC7S08FMicroprocessor Interface HD. COMP. POS NON VD POS VD NEG HD. COMP. NEG HD. HD. Comp QB012 M52347FP Input status QB025 CXA1315MNON VD POS VD NEG CCD and Drive Circuit Video Signal Process CircuitPower Supply Circuit Pre-amp and AD Coversion Circuit1 CCD camera circuit block diagram Coil Terminal Turns Winding specificationOperating Description WindingTroubleshooting Fluorescent does not turn onToshiba America Consumer PRODUCTS, INC