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Sony MZ-NH1 4-3.BLOCK DIAGRAM – POWER SUPPLY Section –

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MZ-NH1

4-3. BLOCK DIAGRAM – POWER SUPPLY Section –

SDO0 SCK0

218 233 229

SLEEP IC DET _PWR _ _ XRST2 D_ENVG 297 XCS

XRST 136

HPOUT B+ REGULATOR IC902

B+ SWITCH

Q604, 611

REG4 B+

OR GATE

IC604

			SDO0	SCK0
87	64	94	59	58
RST OUT	VBUSSEL2	SLEEP IN	DATA	SCK

SDO0

58

CLK

SCK0

63

60

59

6

REC KEY

3

34

17

MUTEON

45

VSTB

VCO2

VC01

VG

XWK1, XWK2,

B+

B+

B+

B+

XWK4

XWK4

2

XWK2

4

5

WAKE UP SWITCH

XWK1

Q951

55

DDC3 B+

52

48

	+1.2V				VG	83

	REGULATOR				TSBV_IN 101
	IC603				REG_IN	97

REG5 B+				98 REG_OUT	DVDD_IN 90
		D609			VSTB_IN	105
				D610	VREF_IN	18

24 VG

VB 27

	FCRAM_VDD	B+ SWITCH	REG5 B+
	LG 25	Q883, 884

RECP 181 RECP_MON 231

VC B+

61 VIF

VREC B+

13 VC

14 VC

112

B+ SWITCH

Q502, 503

80

REG5 VSTB B+

81

REG5 TSBV B+

D602

REG F B+

REG5 OSC B+

USB IF VDD

B+ SWITCH

Q801, 802

26

REG1 B+

REG2 B+

REG3 B+

MDVCC

B+ SWITCH

Q603

VO1 12 VO2 39

FFCLR

D884

D883

VB B+

DRAM_

LEVEL

HOLD_DET

SHIFT

Q882

D881

DRAM_

REGULATOR

VDD_CLR

CONTROL

Q881

DRAM_ALONE

D882

VBUS_DET 250 USBHOLD 316 SUSPEND 317

VB_MON 121 VBUS_MON 129 HIDC_MON 127

L1 B+	+3V		D603
L1 B+	+3V	VB B+
L2 B+	REGULATOR	VB B+
L2 B+	IC502				L3_2	25
	IC502
		DDC3 B+	21	V3O_1
		DDC3 B+	21	V3O_1	L3_1	24
			22	V3O_2	L3_1	24
			22	V3O_2
	SWITCHING		28	V3FB	VBUS 54
	Q501		66	VG2	VBUS 54
	Q501		66	VG2	VPDRV 36
			73	VG3	VPDRV 36
			73	VG3	PVBUS 88
					PVBUS 88
			51	VBUS_DET	VBUSSEL	43
			51	VBUS_DET	CLP	38
			86	HOLD_OUT	CLP	38
			86	HOLD_OUT	CLM	42
			99	SUS_IN	CLM	42
			99	SUS_IN	POWP1 37
			95	RST_IN	POWP1 37		FFCLR
			95	RST_IN	POWP2 41
	VB B+
	VB B+
	VBUS B+
	DC IN B+

B+ SWITCH

Q605

DRAM_ALONE

DRAM_VDD_CLR

DRAM_HOLD_DET

FCRAM_VDD

VOLTAGE LIMITER Q606, 607

Q404

				VB B+
				CN451 (2/2)
				(USB)
				3	VBUS
		8
		PWR_WAKE
		VI	6	1	DCIN6V
		IN1–	12	11
		TYPE1	11	12
		TYPE2	16	12
		TYPE2	16
	CHARGE CONTROL			REGULATOR
		IC401		REGULATOR
		IC401		Q401
				Q401	D401
20	I_CTL1	RF1	26		D401
		RF1	26

SYSTEM CONTROLLER

219 73 256 257 207

DRAMDRAM __DRAM _FCRAM _HOLD_VDD_ FFCLRVDDDETCLRALONE

220

CHG_I_CTL2 221 CHG_I_CTL3 222

CHG_MON 122 A7CAL_SW 194

XRST_CHG_IC 208 CHG_SEL 230 CHG_IAMP_CAL 241

			VO	32	LITHIUM-ION
			BAT+	31
	4	VI_CTL			RECHARGEABLE

					BATTERY
	7	CHG_CTL
			BAT–		LIP-4WM
	29	I_CTL2		25

	23	I_CTL3			CHARGE
	22	A/D	CHG_SW1
				30	CONTROL
	13	A7CAL_SW			Q432
	14	XRESET	RS	24	CHARGE
	18	I_SEL

	27	IAMP_CAL	CHG_SW2	5	CONTROL
					Q431

	BATT_MINUS_MON	130
	XGUM_ON	198	S431
	XGUM_ON	198	(BATTERY INSERT DETECT)
			(BATTERY INSERT DETECT)

MZ-NH1

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Contents

SPECIFICATIONS Sony Corporation Personal Audio Company Page TABLE OF CONTENTS SERVICING NOTES GENERAL 3.DISASSEMBLY TEST MODE NOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNIT NOTES ON LASER DIODE EMISSION CHECK UNLEADED SOLDER : LEAD FREE MARK Installing The recorder The display window of the recorder The headphones/earphones with a remote control The display window of the remote control 3-1.DISASSEMBLY FLOW Note 1: Note 2: 3-2.BOTTOM PANEL SUB ASSY 3-3.MAIN BOARD 3-4.UPPER PANEL SUB ASSY 3-5.CONTROL ORNAMENT BLOCK 3-6.MECHANISM DECK ASSY (MT-MZNH1-181) 3-7.GEAR (BSA), GEAR (SB) 3-8.OP SERVICE ASSY 3-10.HOLDER ASSY Ver Ver Manual AdjF MENU MD1Run HM3Run OfsRun OPChk ResOK SET OK ## RMC OK ## Temp SetTmp POWER PwrAdj VC1 VBsAdj ChrgLi DESIGN LrefPw DistF 3-9.Resume Clear 3-10.Releasing The Test Mode 6-1.BLOCK DIAGRAM – MD SERVO Section – 6-2.BLOCK DIAGRAM – AUDIO Section – 4-3.BLOCK DIAGRAM – POWER SUPPLY Section – •Note For Printed Wiring Boards and Schematic Diagrams Note on Printed Wiring Board: Note on Schematic Diagram: •Waveforms IC701 1 (VI1), 2 (WI1) SCHEMATIC DIAGRAM – MAIN Section (1/9) – See page 36 for IC Block Diagrams SCHEMATIC DIAGRAM – MAIN Section (3/9) – See page 36 for IC Block Diagram SCHEMATIC DIAGRAM – MAIN Section (5/9) – SCHEMATIC DIAGRAM – MAIN Section (6/9) – Page SCHEMATIC DIAGRAM – MAIN Section (8/9) – SCHEMATIC DIAGRAM – MAIN Section (9/9) – 6-13.PRINTED WIRING BOARD – MAIN Section (1/2) – : Uses unleaded solder •Semiconductor Location Ref. No Location 6-14.PRINTED WIRING BOARD – MAIN Section (2/2) – : Uses unleaded solder Ref. No. Location CXD9811K IC401 MM1655LCBE IC501 SN761059ZQLR IC601 SC901585VAR2 IC602 R1160N121B-TR-FA IC701 SC901583EPR2 IC871 R2061K01-E2 IC891 AK6514CN-L IC901 SC901584EPR2 IC902 XC62HR5502MR •IC Pin Function Description IC801 CXD2681-222GG(SYSTEM CONTROLLER, DIGITAL SIGNAL PROCESSOR) Page Page Page Page Page Page NOTE: 7-1.PANEL SECTION MAIN SECTION 7-3.MECHANISM DECK SECTION