Sony MZ-E900 rWAVEFORMS, 1 TE, IC501 rs FE, rIC BLOCK DIAGRAMS, IC301 TA2131FL-EL, J Digital

MZ-E900

Note on Printed Wiring Boards: MAIN SECTION

•X : parts extracted from the component side.

• : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.)

Caution:
Pattern face side:	Parts on the pattern face side seen from the
(Side B)	pattern face are indicated.
Parts face side:	Parts on the parts face side seen from the
(Side A)	parts face are indicated.

•Main boards is four-layer printed board.

However, the patterns of layer 2 and 3 have not been included in this diagrams.

•Replacement of IC601 used in this set requires a special tool.

•Lead Layouts

surface

Lead layout of	CSP (chip size package)
conventional IC

Note on Schematic Diagram: MAIN SECTION

•All capacitors are in ∝ F unless otherwise noted. pF: ∝∝ F 50 WV or less are not indicated except for electrolytics and tantalums.

•All resistors are in Ω and 1/4 W or less unless otherwise specified.

•f : internal component.

Note: The components identified by mark 0or dotted line with mark 0are critical for safety.

Replace only with part number specified.

• : B+ Line.

•Power voltage is dc 1.5V and fed with regulated dc power supply from battery terminal.

•Voltages and waveforms are dc with respect to ground under no-signal conditions.

no mark : PLAY

•Voltages are taken with a VOM (Input impedance 10 MΩ ). Voltage variations may be noted due to normal produc- tion tolerances.

•Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc- tion tolerances.

•Circled numbers refer to waveforms.

•Signal path. F : Analog

J : Digital

•Replacement of IC601 used in this set requires a special tool.

•The voltage and waveform of CSP (chip size package) cannot be measured, because its lead layout is different form that of conventional IC.

rWAVEFORMS

1
		Approx.
		12 mVp-p
IC501	1 TE
	VOLT/DIV : 5 mV AC
	TIME/DIV : 1 ∝ sec
2
		Approx.
		1.2 Vp-p
IC501	ed	(RF)
	VOLT/DIV : 0.5 V AC
	TIME/DIV : 0.5 ∝ sec
3
		Approx.
		10 mVp-p

IC501 rs (FE)

VOLT/DIV : 5 mV AC

TIME/DIV : 1 ∝ sec

rIC BLOCK DIAGRAMS

IC301 TA2131FL-EL
	STB		MUTE	BST SW	BEEP IN	GND	VREF IN
	18		17	16	15	14	13
	PW		MT	BST	BEEP		V REF	12	VREF
	SW		SW	SW
								11	LPF1
TC MT	19
VCC	20			ADD
INR
	21							10	BST NF1
							BST1
INL	22							9	LPF2
BEEP	23	PW		PW		BST2		8	BST NF2
OUTB		A		B
BEEP								7	BST OUT
	24
OUTA							BST
							AGC
	1	2	3	4		5	6
	+B	OUTL	PWR GND	OUTR		DET	AGC IN
IC501 SN761057DBT

							44	ADIP-IN
				A+B+C+D		TWpp	43	S-MON
				I+J		PK/BTM
	TE	1		NPP		Aw
				TON		CSLO
	REXT	2		CSL		VREF075
	Wpp-LPF	3		Aw+Dw	S-MONITOR	A-C
				TON Peak		D-C
	VREF	4
				TON Botm		Malfa
	C	5
				ADIP		Mij
	D	6		TE		AwBPF
			TE	TEMP		Dw
						DwBPF
	D-C	7					42	FE
			Tpp/Wpp				41	ABCD
							40	AVCC
							39	OFC-1
							38	OFC-2
							37	PS
						RF	36	LP
	Iy	8					35	EQ
	Ix	9					34	AGND
			FE				33	RF
	Jx	10
							32	CCSL2
	Jy	11
				ABCD			31	VC
	A	12					30	VREF075
	A-C	13				PEAK/BOTM	29	PEAK
	B	14					28	BOTM
	TON-C	15
	CIG	16					27	DGND
	CDN	17
					T-ON		26	OFTRK
	PD-NI	18
	PD-I	19	APC
	PD-O	20
					SERIAL		25	XRST
							24	SCK
					I/F
							23	SBUS
			ADIP
	ADFG 21
	DVDD	22
22	22