Eiki LC-X71 LC-X71L service manual Audio signal processing stage, Chassis Description

Chassis Description

Audio signal processing stage
					10		AV BOARD			DRIVE BOARD
							AUDIO_SW1									IC1651				16VA
	L	1
PC 1					9											PRE AMP.
							AUDIO_SW2
	R	12											AUDIO-CONTROL			<EL2244>
AUDIO-IN/OUT				AUDIO-SW	3	Q5002					15				10	5	7					IC1632	K16N IC1631
(VARIABLE OUTPUT)												<BH3540>
	L	5	<4052>							3
PC 2							L											L
AUDIO-IN	R	14			13	Q5001					2				7	3	1
										1
	L	2			IC001				K00D					IC1652
VIDEO							R			K16S								R
	R	15				IC5002
AUDIO-IN							SW															3	1
												12			3,14									K20H
						1	2			5
						6	5			6
																						R NET
												VOLUME		SP MUTE		SP OFF
			Q5004														Q1636							K20J
			Q5303
			Q5007		K40E		K40C									K16R	K16U
									45			11		12	13				3		1	3	1
						7	15	47										5
					K10R		K10P									K8T	K20B				K20A	12VAR	12VAL
	264	AUDIO_MUTE														Q1683		Mute: L Q1681
	263															SW
		M_OUT																17	3,18	17	3,18
				Monitor out ON : L
																BOARD
				Monitor out OFF : H
	143		4			16	AUDIO_SW1											R		L
				IC3251
IC301 SYSTEM CONTROL	232		5	BUFFER		15	AUDIO_SW2										12,13		8,9	8,9	12,13
																IC1682					IC1681
	46		2			6										R-AMP.					L-AMP.
				IC3252			SP_MUTE									<TDA1517>					<TDA1517>
									Mute: H
	84		5			3
				BUFFER			SP OFF
									Mute: H
	325	PW_SCL_3V		PW_SCL_5V		2											K20D		SW2001		K20C
							IC281	15
									VOLUME							4	3	2	1	1	2	3	4
	246					3	DAC
		PW_SDA_3V		PW_SDA_5V													K20G					K20F
										MAIN BOARD								-	+	+	-
																-	+	R		L		+	-
																EXP SP._R					EXP SP._L
																		SP902		SP901
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