Pioneer MJHX-33, MJHX-55, MJHX-77 Service manual

ORDER NO.

RRV2171

MINI DISC RECORDER

MJ-HX55

MJ-HX33

MJ-HX77

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

	Type		Model No.		Power Requirement	Remarks
		MJ-HX55	MJ-HX33	MJ-HX77
	ZLXCN	à	à	à	DC power supplied from other system component

¦ This service manual should be used together with the following manual(s):

Model No.

Order No.

Remarks

MJ-HX700/ZVYXCN RRV2134

These products are component of systems.

This product does not operate normally by itself. Please connect it to the CD RECEIVER SYSTEM, for adjustment and operation inspection. Otherwise damage may result.

System Component Table

	Component		Model No.		Remarks
		X-HX55	X-HX33	X-HX77
	CD RECEIVER AMPLIFIER	XC-HX55	XC-HX33	XC-HX77
	SPEAKER SYSTEM( L ch, R ch )	S-HX55-LR	S-HX33-L, -R	S-HX77-LR
	MD RECORDER	MJ-HX55	MJ-HX33	MJ-HX77	This manual

PIONEER CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan

PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.

PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Allexandra Road, #04-01, Singapore 159936

PIONEER CORPORATION 1999

T–ZZR JULY 1999 Printed in Japan

MJ-HX55, MJ-HX33, MJ-HX77

7 CONTRAST OF MISCELLANEOUS PARTS

NOTES : Ö Parts marked by “ NSP ” are generally unavailable because they are not in our Master Spare Parts List.

ÖThe mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation.

ÖScrew adjacent to °mark on the product are used for disassembly.

ÖReference Nos. indicate the pages and Nos. in the service manual for the base model.

CONTRAST TABLE

MJ-HX55/ZLXCN, MJ-HX33/ZLXCN, MJ-HX77/ZLXCN and MJ-HX700/ZVYXCN are constructed the same except

for the following :

	Ref.				Part No.
		Mark	Symbol and Description					Remarks
				MJ-HX700	MJ-HX55	MJ-HX33	MJ-HX77
	No.
				/ZVYXCN	/ZLXCN	/ZLXCN	/ZLXCN
			PACKING
	P3-3		Display Carton	66679-70	66679-55L	66679-33L	66679-77L
	P3-6		Sound Scape MD	AFB7011	AFB7005	AFB7003	AFB7011
			POS Code Seal	66668-M70	66668-M55	66668-M33	66668-M77	No.1
			EXTERIOR
	P5-1	NSP	Front Cover (A)	66714-K7M	66714-05M	Not used	66714-K7M
			Front Cover (B)	Not used	Not used	66715-03M	Not used
	P5-2	NSP	Front Door (A)	66708-K7M	66708-05M	Not used	66708-K7M
			Front Door (B)	Not used	Not used	66709-03M	Not used
	P5-3		Button B (MD)	66717-K7M	66717-05M	66717-03M	66717-K7M
	P5-10		MD Front Case	66702-K7	66702-05	66702-03	66702-K7
	P5-11		Button D (REC)	66719-K7R	66719-05R	66719-03R	66719-K7R
	P5-19		Eject Button	66721-K7	66721-05	66721-03	66721-K7
	P5-20		Button C (MD EDIT)	66718-K7ME	66718-05ME	66718-03ME	66718-K7ME
	P5-24		Inner Panel (MD)	66711-K7M	66711-05M	66711-03M	66711-K7M
	P5-36		Leg Rubber (A)	66758-01	66758-01	Not used	66758-01
			Leg Rubber (B)	Not used	Not used	66759-02	Not used
	P5-37		Foot (A)	66722-K7	66722-05	Not used	66722-K7
			Foot (B)	Not used	Not used	66723-03	Not used
	P5-38		MD Rear Case	66704-K7	66704-05	66704-03	66704-K7
	P5-46		Back Plate (MD)	66762-70	66762-MJ55	66762-MJ33	66762-MJ77
	P5-47		Front Door A Assy (MD)	10000-K7M	10000-05M	Not used	10000-K7M
			Front Door B Assy (MD)	Not used	Not used	10100-03M	Not used

Note : • The numbers in the remarks column correspond to the numbers on the exploded diagram. Refer to “EXPLDED VIEWS”

EXPLDED VIEWS

PACKING SECTION

Front Side	Display Carton

No.1

2

ORDER NO.

RRV2134

MINI DISC RECORDER

MJ-HX5000

MJ-HX3000

MJ-HX2000

MJ-HX700

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

	Type			Model			Power Requirement	Remarks
		MJ-HX5000	MJ-HX3000		MJ-HX2000	MJ-HX700
	ZUCXCN	à	à		à	—	DC power supplied from other system component
	ZUCXCN1	à	à		à	—	DC power supplied from other system component
	ZVYXCN	—	—		—	à	DC power supplied from other system component

¦ ZUCXCN type and ZUCXCN1 type are constructed the same.

These products are component of systems.

This product does not operate normally by itself. Please connect it to the CD RECEIVER SYSTEM, for adjustment and operation inspection. Otherwise damage may result.

CONTENTS

	1. SAFETY INFORMATION ....................................	2	7. GENERAL INFORMATION	28
	2. EXPLODED VIEWS AND PARTS LIST	3
			7.1 DIAGNOSIS	28
	3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 8
			7.2 PARTS	30
	4. PCB CONNECTION DIAGRAM	19
			8. PANEL FACILITIES AND SPECIFICATIONS
	5. PCB PARTS LIST	26
				32
	6. ADJUSTMENT	28	...................................................................

PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.

PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936

PIONEER ELECTRONIC CORPORATION 1999

T–ZZR MAY 1999 Printed in Japan

MJ-HX5000, MJ-HX3000, MJ-HX2000, MJ-HX700

1. SAFETY INFORMATION

This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual.

Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician.

WARNING

This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to

cause cancer, birth defects or other reproductive harm.

Health & Safety Code Section 25249.6 – Proposition 65

	IMPORTANT
THIS PIONEER APPARATUS CONTAINS					LASER DIODE CHARACTERISTICS
LASER OF CLASS 1.
				MAXIMUM OUTPUT POWER: 5 mw
SERVICING OPERATION OF THE APPARATUS				WAVELENGTH: 780 – 785 nm
S H O U L D B E D O N E B Y A S P E C I A L L Y
INSTRUCTED PERSON.

LABEL CHECK

Excpet for MJ-HX700

MJ-HX700 type Only

MJ-HX700 type Only

2

MJ-HX5000, MJ-HX3000, MJ-HX2000, MJ-HX700

2. EXPLODED VIEWS AND PARTS LIST

NOTES : Ö Parts marked by “ NSP ” are generally unavailable because they are not in our Master Spare Parts List.

ÖThe mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation.

ÖScrew adjacent to °mark on the product are used for disassembly.

2.1PACKING

6			13
		1	14
			12
5			10
			9
			8
		4	11
7
				(1)PACKING PARTS LIST
				Mark No.				Description		Parts No.
			1					Polyfoam (TOP)		66680
			2					Polyfoam (BOTTOM)		66681
			3					Display Carton		See Contrast table (2)
			4					Mirormat Mat(380x300x0.5)		66694
2			5					Exclusive use CD-MD Cable		60233
								(L=1.0 m)
			6					Sound Scape MD		AFB7011-A
			7					MD RECORDER		See Contrast table (2)
			8					Operating Instructions (English)		66780-MDU
			8					Operating Instructions (French)		66780-MDF
		3	9					Operating Instructions		See Contrast table (2)
			10					Guarantee Card		See Contrast table (2)
			11					Polyethylene Bag		53117
							(0.03 × 200 × 300)
			12					Initial Instruction Manual		66783
			13					Carton Sheet C		66669
			14					Safety Directions		See Contrast table (2)

(2) CONTRAST TABLE

MJ-HX5000, MJ-HX3000, MJ-HX2000 and MJ-HX700 are constructed the same except for the following:

	Mark	No.	Symbol and Description		Part No.			Remarks
				MJ-HX5000	MJ-HX3000	MJ-HX2000	MJ-HX700
		3	Display Carton	66679-50U	66679-30U	66679-20U	66679-70
	NSP	7	MD RECORDER	MJ-HX5000	MJ-HX3000	MJ-HX2000	MJ-HX700
				/ZUCXCN	/ZUCXCN	/ZUCXCN	/ZVYXCN
		9	Operating Instructions (German)	Not used	Not used	Not used	66780-MDG
		10	Guarantee Card	66688-U	66688-U	66688-U	66688-Y/N
		14	Safety Directions	66784-50U	66784-30U	66784-20U	66784-70V

3

MJ-HX5000, MJ-HX3000, MJ-HX2000, MJ-HX700

2.2 EXTERIOR				39
				40
				41
			B	8
		38
				42	8
					8
	32
					43
	32				44
					45
				A
		9
			32		46
			32
		32
			37	51
			36	52	8
			35
					8		8
						8
							8
			15
						17
		11	14		16		53
	10	12	13		31
9		18		8			A
							B
8							40
7	4		19
			9
5
			20				44
6					50
					8
3							33	34
	23		22
							34
		23
						49	29
			26			34
			9
				27
				25	28
1				48	21
47		2	24		Refer to "2.3 MD MECHA. (1/2)"
						"2.4 MD MECHA. (2/2)"

30

34

34

34

4

MJ-HX5000, MJ-HX3000, MJ-HX2000, MJ-HX700

(1) EXTERIOR PARTS LIST

Mark		No.		Description		Parts No.		Mark		No.		Description			Parts No.
										26		MD Door Shaft		66750
NSP		1		Front Cover A, B (MD)	See Contrast table (2)
NSP		2		Front Door A, B (MD)	See Contrast table (2)					27		MD Door Spring		66751
		3		Button B (MD)	See Contrast table (2)					28		Screw PAN M3x6		PMZ30P060FZK
		4		Lens	66734-MD					29		Screw BIND TAPP. M3x6		BMZ30P060FZK
		5		Cushion A	66795					30		Shield Case (Bottom)		66739
		6		Door Shaft A	66746					31		Shield Case (Up)		66738
		7		Dumper Gear	60227					32		Screw PLAT M3x6		CMZ30P060FNI
		8		Screw PAN TAPP. T3x10	PMZ30P100FNI					33		MD COMBI PCB Assy		66785B
		9		Plate Nut	66741							(AD/DA PCB)
		10		MD Front Case	See Contrast table (2)					34		Screw PAN M2x4		PMZ20P040FZK
										35		Screw PAN M3x10		PBZ30P100FMC
		11		Button D (REC)	See Contrast table (2)
		12		LCD Window	66735					36		Leg Rubber (A, B)		See Contrast table (2)
		13		LCD Assy	52715					37		Foot (A, B)		See Contrast table (2)
		14		LCD Sheet	66756					38		MD Rear Case		See Contrast table (2)
		15		LCD Holder	66727					39		12P	Connector Holder A	66728
								NSP		40		12P	Connector Assy	66763
		16		MD COMBI PCB Assy	66785C
				(LED PCB)						41		12P	Connector Holder B	66729
		17		MD COMBI PCB Assy	66785A					42		Wire Clamper		66726
				(FRONT PCB)						43		10P	Connector Holder A	66730
		18		Push Door Lock	60226			NSP		44		10P	Connector Assy	66778
		19		Eject Button	See Contrast table (2)					45		10P	Connector Holder B	66731
		20		Button C (MD EDIT)	See Contrast table (2)
										46		Back Plate (MD)		See Contrast table (2)
		21		MD Mechanism Assy	61416					47		Front Door Assy A,B (MD)		See Contrast table (2)
		22		Front Door Spring	66748					48		Panel Tape B		66761
		23		Screw PAN TAPP. T2x8	PBZ20P080FMC					49		16P	FFC (SUMI Card)	66775
		24		Inner Panel (MD)	See Contrast table (2)					50		19P	FFC (SUMI Card)	66776
		25		MD Door	66732
										51		Label Plate (CAUTION)		66690I
										52		Label Plate		See Contrast table (2)
										53		Label Plate (MD Caution A)		See Contrast table (2)

(2) CONTRAST TABLE

MJ-HX5000, MJ-HX3000, MJ-HX2000 and MJ-HX700 are constructed the same except for the following:

	Mark	No.	Symbol and Description		Part No.			Remarks
				MJ-HX5000	MJ-HX3000	MJ-HX2000	MJ-HX700
	NSP	1	Front Cover (A, B)	66714-05M	66715-03M	66714-02M	66714-K7M
	NSP	2	Front Door (A, B)	66708-05M	66709-03M	66708-02M	66708-K7M
		3	Button B (MD)	66717-05M	66717-03M	66717-02M	66717-K7M
		10	MD Front Case	66702-05	66702-03	66702-02	66702-K7
		11	Button D (REC)	66719-05R	66719-03R	66719-02R	66719-K7R
		19	Eject Button	66721-05	66721-03	66721-02	66721-K7
		20	Button C (MD EDIT)	66718-05ME	66718-03ME	66718-02ME	66718-K7ME
		24	Inner Panel (MD)	66711-05M	66711-03M	66711-02M	66711-K7M
		36	Leg Rubber (A, B)	66758-01	66758-02	66758-02	66758-01
		37	Foot (A, B)	66722-05	66723-03	66723-02	66722-K7
		38	MD Rear Case	66704-05	66704-03	66704-02	66704-K7
		46	Back Plate (MD)	66762-50U	66762-30U	66762-20U	66762-70
		47	Front Door Assy (MD)	10000-05M	10000-03M	10000-02M	10000-K7M
		52	Label Plate	66690B	66690B	66690B	66690E
		53	Label Plate (MD Caution A)	Not used	Not used	Not used	66690A

5

MJ-HX5000, MJ-HX3000, MJ-HX2000, MJ-HX700

2.3 MD MECHA. (1/2 : LOADING ASSY)

13

12

11

19

15

14

16

17

13

12

22

20

21

Refer to "2.4 MD MECHA. (2/2 : MECHA ASSY)

33

10		11
9		18
		23
		24
8
	7	26
32
		6
	4

31 3

5

27

2 1

30

2

¦ MD MECHA. (1/2:LOADING ASSY) PARTS LIST

Mark No.				Description		Parts No.		Mark No.				Description		Parts No.
1				Motor Plate Assy	X-2646-247-1		18					Mode Cam	2-646-560-01
2				Screw +P2.6x4.5 TYPE3	7-627-854-28		19					Head F.Wire Connection	1-669-181-11
3				L-SW Wire Connection Board	1-668-261-11		20					Screw +P1.7x2.5TYPE2	2-627-529-01
4				Connecton Wire (6P)	1-783-386-11		21					MD Head	1-500-518-12
5				Gear (AW B)	2-646-555-02		22					Sheet	2-646-549-02
6				Gear (AW A)	2-646-554-01		23					MD MOUNT ASSY	A-4917-020-A
7				Slot Frame Assy	X-2646-249-2		24					Screw	2-643-228-01
8				Lifter Spring (Slot Arm)	2-646-563-01		25					• • • • •
9				Slot Arm	2-646-556-01		26					Lifter Spring (Door Arm)	2-646-545-01
10				Load Frame Assy	X-2646-248-2		27					Main Frame	2-646-547-02
11				lnsulator	2-646-548-01		28					• • • • •
12				W2.6,MIDDLE	7-688-002-11		29					• • • • •
13				Screw	4-628-167-01		30					Loading Motor Assy	X-2626-328-1
14				Slid Frame	2-646-557-01		31					Screw +P1.7x1.8TYP.3	7-627-852-38
15				Head Arm	2-646-559-01		32					Screw +P2x3 TYP.3	7-627-853-37
16				Lifter Spring (Slot Frame)	2-646-562-01		33					Loading Assy	A-4912-117-A
17				Coil Spring (Head Arm)	2-646-561-01

6

MJ-HX5000, MJ-HX3000, MJ-HX2000, MJ-HX700

2.4 MD MECHA. (2/2 : MECHA ASSY)

23

6

											12
											11
													13
								8
					1								24
					9
					10
								15
					7			14
			5		15
											20
			4
			3								21
					25
			2		16								22
								17
			4		19
			1		18						1
¦ MD MECHA. (2/2:MECHA ASSY) PARTS LIST
Mark No.				Description		Parts No.		Mark No.				Description			Parts No.
1				Screw +P1.4x3.5 TYPE3	2-627-404-01			16				SL Motor Assy			X-2626-329-1
2				Guide	2-646-453-01			17				Gear (MD)	2-646-571-01
3				Connecton Wire (7P)	1-783-387-11			18				Screw +P1.7x4 TYPE3	7-627-852-18
4				Screw +P1.4x1.8TYPE3	7-627-850-79			19				SP Motor Assy			X-2626-327-1
5				D-SW MOUNT BOARD	1-668-262-11			20				Lead Screw Assy			X-2626-330-1
6				Servo Base	2-646-575-01			21				Lead Holder Assy			X-2626-331-1
7				SP Motor Holder	2-646-566-01			22				Lead Holder (B)	2-646-573-01
8				OP Lead Wire	1-669-180-11			23				Deck Mechanism Assy			A-4912-118-A
9				SL Motor Lead Wire	1-783-318-11			24				MD MECHANISM ASSY			KMS-260A
10				SL Motor Lead Wire	1-783-318-21							(KMS-260A)
								25				SP Tension Spring	2-646-564-01
11				Guide Shaft	2-646-452-01
12				Screw +P1.4x1.4TYPE2	2-627-530-D1
13				Rack (Insater)	4-963-914-02
14				Pulley Load plate	2-646-567-01
15				N0.0 Cross Screw	2-627-431-01

7

	1		2		3		4

MJ-HX5000, MJ-HX3000, MJ-HX2000, MJ-HX700

	3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
	3.1 BLOCK DIAGRAM
A	PCB			CN805
												CN801
			1	CON
												SYS3.3V	2	1
	POWER	CN301	3	SYSSO								LEDO
			2	SYSSI								STB	4	3
												VBAT
			4	SYSCLK								AMUTE	6	5
		RECEIVER									DOWNPOWER	XLATCH	8	7
			5	SUBCS
												DA RST	10	9
			6	SUBREQ								RXD
												TXD	12	11
			7	SUBRST								RTS
												CTS	14	13
			8	COM+5V
													16	15
		CD	9	COM GND								EMPHASIS
			10	MD+5V	MD +5V							CN804
		TO											2	1
			11	MDGND
													4	3
			12	CON								ADDT
													6	5
						MD	19		15	MD
	PCB			CN806				IC801
B												DADT	8	7
				REC L		R ch 20		52186	12
	TUNER	CN101	1			MD REC		(AK4518-VF-E2)				DIN	12	11
							6	AD/DA CON.					10	9
			2	AU GND
						R ch 3
		RECEIVER	3	AU+9V	(2SA1037K,								14	13
			7									DOUT
			4	LCH
												+5V	16	15
			5	AU GND					IC802			+5V	18	17
			6						(TC7SU04F)
					Q803 - Q807				X'TAL OSC.			256FS		19
		CD			2SC2412K)
			8	AU GND	+3.3V REG.
		TO	9	B.LED+9V
			10	B.LEDGND
	EXCLUSIVE USE			CN807		2
	CD– MD			1	IC803
	TARMINAL
	CD
C	REC IN				A AD/DA PCB
						ASSY
				CN802								CN803
			1	AN0								DB7		1
			2	AN1								DB6		2
			3	AN2								DB5		3
			4	B.LED+9V						IC800		DB4		4
										52181
			5	B.LEDGND
									(CXP84632-1)			DB3		5
			6	SCAPELED					SUB. CPU			DB2		6
			7	BACKLEDY								DB1		7
			8	BACKLEDG								DB0		8
			9	GND									E	9
D
			10	+5V								R/W		10
												RS		11
	8
	1			2					3					4

	5		6		7		8

MJ-HX5000, MJ-HX3000, MJ-HX2000, MJ-HX700

		CN103														CN106									11)
2		1			AMUTE	93	43, 36, 23, 20, 13, 8,									CHACK IN		1		1
4		3		XLATCH		90				CHACK IN	6							2		2	PWBSW-L				261-668-(1-
																							ASSY
6		5			DARST					37		REC P						3		3
						83						PB P
					EMP 70				μCOM	38
																	REC P
8		7			CTS				(IC201)									4		4
						60		RU8X12MF-0020
10		9			RTS	59											PB P	5		5
					TXD
						58
12		11			RXD	57				LIMITIN 96							LIMITIN	6		6
								41–42, 32-33,12-16
14		13											C MD MOUNT				CN105
16		15																1		1					11)
CN102													ASSY					2		2
4		3	ADDT															4		4		PWB			262- -
						53				DADATA	24
2		1								DIN								3		3
					A2+3V			1–9, 10–15		21
						69											SPDL+
					A2+3V																				-(1668
											79–6783											SW-D	ASSY
					SRDR 91			CXD2652AR		ADDATA
6		5			TRDR 85				DSSP								SPDL-	5		5
			DADT		TFDR	86			&
8		7			FFDR 88				DSP									6		6
					FRDR 89				(IC121)
10		9			SFRD 92						62–							6		6
12						93 SPRD				RF1 55							CN101
			DIN			94	SPFD
14		13			XRST		10	29–32, 34–38, 46–49
																	2		1	2	1
16		15											16	20
								1–2,5,6–9, 11–15, 18–19							2		4		3	4	3
													RF
									DRAM				38
18		17											RF–AMP		4		6		5	6	5
									(IC125)				(IC101)
															3 VC									Device 260A)-(KMS
		19			OUT4F			MSM51V4400-70TS-K					CXA2523AR			FSC+						DiskMini
								-ES					25		-TRK		8		7	8	7
													35
															1
					PSB	16			13 VM3	M+5V							10		9	10	9
					IN3R 15				19 IN1F								12		11	12	11
					IN3F	14	ROHM		IN1R
									18
					OUT3F 12		DRIVER		17								14		13	14	13
					OUT3R 10		(IC152)		VDD
					OUT4R	8	BH6511FS
									OUT1F
						6			21								16		15	16	15
					IN2R				23 OUT1R
						30
																	FSC-
					IN2F 29														17	18	17
																	18
							3	4
						IN4R		IN4F						TRK+			20		19	20	19
																			21		21
				MD MECHANISM ASSY (KMK-260AAB)
CN903																	CN902
1	DB7			KEY LED													AN0		1
2	DB6				BACK-LIGHT							B FRONT MD PCB					AN1		2
							LED
3	DB5			LED DRIVER				SCAPE-LED									AN2		3
4	DB4			Q901–Q905					1				ASSY			B.LED+9V			4
				DTC114YK
5	DB3														B.LEDGND				5
6	DB2			LCD DRIVER						CN901			CN900		SCAPELED				6
7	DB1			IC 900								1	1		BACKLEDY				7
				52182
8	DB0			(NJU6408B)								2	2		BACKLEDG				8
9	E			LC 900								3	3				GND		9
10	R/W			LCD PANEL				KEY				4	4				+5V		10
				52715
11	RS
				(KSG4148S)
																									9
			5							6					7										8

A

B

C

D