Toshiba TLP510U, TLP511E, TLP510E, TLP511U manual Audio Circuit, Audio circuit block diagram

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7-3-7. Audio Circuit

Fig. 7-3-12 shows the audio circuit block diagram.

Signal path from the QV001 to the LINE OUT terminal is: QV001 ® transistor buffer ® LINE OUT terminal.

Signal path from the QV001 to the speaker is as follows. The audio signal developed from the QV001 becomes one signal with its L and R signal components mixed. The mixed audio signal enters the electrical volume IC QA01 (M5222FP) and the output level is controlled within a range of about 0 dB to –80 dB by an external DC voltage (DAC). The audio signal thus controlled by the IC QA01 is fed to the speaker amplifier IC QA02 (TDA7056A) and amplified by about 36 dB to drive the speaker.

VIDEO

L
R	QV001

RGB INPUT SELECTOR

L CXA1855Q

R

LINEOUT

R BUFFER

L		BUFFER		QA01	M5222FP
			VOLUME	QA01	M5222FP

		DAC		VOL / MUTE
		DAC	MUTE	VOL / MUTE
	CXA1315M


				QA02	TDA7056A
				SOUND OUT			SPEAKER
							1.5W
							1.5W

Fig. 7-3-12 Audio circuit block diagram

7-11

Image 38

Contents TLP511U TLP510U TLP511E TLP510E Contents Description Main Power Supply CircuitVoltage Switching Output ControlSupplement Over-current ProtectionOverheat Protection 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 ProcessOn-screen Display Process 1 Contents of the status display signals and the logicStatus 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 system12-1 Each kind of the drive system IC control Drive System Control ProcessVarious Display Modes 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. Y/C Separation Circuit Video Demodulation Block1 Terminal function of TC9090AN 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 NON VD POS VD NEG QB012 M52347FP Input status QB025 CXA1315MHD. COMP. POS NON VD POS VD NEG HD. COMP. NEG HD. HD. Comp 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