PIONEER RX330 Service Manual

Service

Manual

RX330 AUDIO SYSTEM HEAD UNIT

ORDER NO.

CRT3000

VEHICLE	DESTINATION	PRODUCED AFTER	TOYOTA PART No.	ID No.	PIONEER MODEL No.
LEXUS RX330	U.S.A., CANADA	February 2003	86120-48170	P6828	FX-M8427ZT/UC
LEXUS RX330	U.S.A., CANADA	February 2003	86120-48310	P6828	FX-M8427ZT-91/UC

Manufactured for TOYOTA
by PIONEER CORPORATION	PUB. NO. CRT3000

1		2		3		4

A

For details, refer to "Important symbols for good services".

FX-M8472ZT/UC(P6828)

B

C

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

		Model No.	Order No.	Mech. Module	Remarks
		CX-977	CRT2624	S9	CD Mech. Module:Circuit Description, Mech.Description, Disassembly
		CX-1011	CRT2406	3L	Cassette Mech. Module:Mech.Description, Disassembly
		- Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.
D		"Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.

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.

E

	- CD section precaution
	1. Before disassembling the unit, be sure to turn off the			2. To protect the pickup unit from electrostatic dis-
		power. Unplugging and plugging the connectors dur-		charge during servicing, take an appropriate treat-
		ing power-on mode may damage the ICs inside the		ment (shorting-solder) by referring to “the DISAS-
		unit.		SEMBLY” on page 69.
F				3. After replacing the pickup unit, be sure to check the
				grating. (See p.59.)
2
			FX-M8427ZT/UC

1		2		3		4

5		6		7		8

[ Important symbols for good services ]

In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely. When you find the procedures bearing any of the symbols, be sure to fulfill them:

1. Product safety

You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and should keep the safety during servicing by following the safety instructions described in this manual.

2. Adjustments

To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable. In accordance with the procedures or instructions described in this manual, adjustments should be performed.

3. Cleaning

For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning, proper cleaning should be performed to restore their performances.

4. Shipping mode and shipping screws

To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or the shipping screws should be installed before shipping out in accordance with this manual, if necessary.

5. Lubricants, glues, and replacement parts

Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying

glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed ones should be used.

FX-M8427ZT/UC	3

A

B

C

D

E

F

5		6		7		8

1		2		3		4

A	CONTENTS
	SAFETY INFORMATION.......................................................................................	2
	1. SPECIFICATIONS..................................................................................................	5
	2. EXPLODED VIEWS AND PARTS LIST .................................................................	6
	2.1 PACKING(FX-M8427ZT-91/UC) ......................................................................	6
	2.2 EXTERIOR .......................................................................................................	8
	2.3 CD MECHANISM MODULE .........................................................................	10
	2.4 CASSETTE MECHANISM MODULE............................................................	12
	3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .............................................	14
	3.1 BLOCK DIAGRAM.........................................................................................	14
	3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)...................................	16
B
	3.3 KEYBOARD UNIT .........................................................................................	22
	3.4 CD MECHANISM MODULE .........................................................................	24
	3.5 CASSETTE MECHANISM MODULE............................................................	28
	4. PCB CONNECTION DIAGRAM ..........................................................................	30
	4.1 MAIN UNIT ...................................................................................................	30
	4.2 KEYBOARD UNIT .........................................................................................	34
	4.3 CD MECHANISM MODULE .........................................................................	38
	4.4 CASSETTE MECHANISM MODULE............................................................	40
	5. ELECTRICAL PARTS LIST ..................................................................................	42
	6. ADJUSTMENT....................................................................................................	50
	6.1 CONNECTION DIAGRAM ............................................................................	50
C
	6.2 AUDIO, TUNER ADJUSTMENT...................................................................	54
	6.3 TEST MODE ..................................................................................................	56
	6.4 CD ADJUSTMENT........................................................................................	57
	6.5 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT ..........	59
	6.6 ERROR CODE................................................................................................	61
	6.7 AVC-LAN DIAGNOSIS MODE......................................................................	65
	7. GENERAL INFORMATION .................................................................................	69
	7.1 DIAGNOSIS...................................................................................................	69
	7.1.1 DISASSEMBLY ........................................................................................	69
	7.1.2 CONNECTOR FUNCTION DESCRIPTION ..............................................	73
D	7.2 PARTS ...........................................................................................................	74
	7.2.1 IC...............................................................................................................	74
	7.2.2 DISPLAY ...................................................................................................	77
	7.3 EXPLANATION .............................................................................................	78
	7.3.1 SYSTEM BLOCK DIAGRAM....................................................................	78
	7.3.2 OPERATIONAL FLOW CHART ................................................................	81
	7.4 CLEANING ....................................................................................................	82
	8. OPERATIONS......................................................................................................	83
E

F

4	FX-M8427ZT/UC

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5		6		7		8

1. SPECIFICATIONS

General

Power source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13.2V(10.5V-16.0V allowable) DC Grounding system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Negative type Backup current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.3mA or less Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .319(W) x144(H) x174(D)mm Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3kg

Cassette player

Tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Compact cassette tape(C30-C90) Tape speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.76cm/sec.(+0.14cm/sec., -0.05cm/sec.) Wow and flutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.2% or less(WRMS) Crosstalk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40dB or less Stereo Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30dB or more S/N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40dB or more Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3% or less

CD player

System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Compact disc audio system Usable discs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Compact disc Signal format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sampling frequency : 44.1kHz

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Number of quantization : 16; linear S/N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65dB or more Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.3% or less

FM tuner

Frequency range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87.75, 87.9− 107.9 MHz S/N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46dB or more(54dBµ input) Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5% or less IF interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80dB or more Image interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35dB or more Stereo Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25dB or more(1kHz)

AM tuner

Frequency range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .530-1,710 kHz S/N 20dB usable sensibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34dBµ or less S/N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42dB or more Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5% or less IF interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55dB or more Image interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45dB or more

A

B

C

D

E

F

FX-M8427ZT/UC	5

5		6		7		8

1		2		3		4

A

B

C

D

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING(FX-M8427ZT-91/UC)

NOTE:

- Parts marked by “*” are generally unavailable because they are not in our Master Spare Parts List.

E		- Screws adjacent to mark on the product are used for disassembly.
		- For the applying amount of lubricants or glue, follow the instructions in this manual.
		( In the case of no amount instructions, apply as you think it appropriate.)
		- PACKING(FX-M8427ZT-91/UC) SECTION PARTS LIST
		Mark No. Description			Part No.
		*	1 Air Cap		CHW1945
		*	2 Air Cap		CHW1948
			3	Cover	CEG1045
			4	Polyethylene Bag	CEG1174
F			5	Carton	CHG4861
			6	Contain Box	CHL4861
		6
						FX-M8427ZT/UC

1		2		3		4

5		6		7		8

A

B

C

D

E

F

FX-M8427ZT/UC	7

5		6		7		8

1		2		3		4

2.2 EXTERIOR

A

B

C

D

E

F

8	FX-M8427ZT/UC

1		2		3		4

5		6		7		8

- EXTERIOR SECTION PARTS LIST

Mark No. Description		Part No.	Mark No. Description			Part No.
1	Cassette Mechanism Module EXK4295		51		Button(1)	CAC7599
2	Screw	BSZ26P060FTC	52		Button(2)	CAC7600
3	Screw	BSZ30P060FTC	53		Button(3)	CAC7601
4	Connector	CDE7248	54		Button(4)	CAC7602
5	Connector	CDE7260	55		Button(5)	CAC7603
6	CD Mechanism Module(S9T)CXK5521		56		Button(6)	CAC7604
7	Chassis	CNA2466	57		Button(AM)	CAC7605
8	Case	CNB2880	58		Button(FM)	CAC7606
9	Holder	CND1792	59		Button(TAPE)	CAC7607
10	Frame	CND1789	60		Button(DISC)	CAC7608
11	Chassis Unit	CXC1820	61		Button(TAPE EJECT)	CAC7609
12	Screw	ISS26P060FTC	62		Button(TEXT)	CAC7610
13	90467-10203	CNV5641	63		Button(SEEK,TRACK)	CAC7611
14	Guide	CNV7306	64		Button(RDS,TRAF)	CAC7612
15	Main Unit	CWM8384	65		Button(CD EJECT)	CAC7613
16	Screw	BMZ30P060FTC	66		Button(TYPE)	CAC7615
17	Screw(M3x6)	CBA1393	67		Button(SCAN)	CAC7616
18	Connector(CN801)	CKM1322	68		Button(MUTE)	CAC7637
19	Connector(CN473)	CKM1350	69		Door	CAT2351
20	Connector(CN472)	CKM1351	70		Spring	CBH2663
21	Connector(CN353)	CKS3568	71		Lighting Conductor	CNV7251
22	Connector(CN351)	CKS3835	72		Lighting Conductor	CNV7252
23	Connector(CN804)	CKS4361	73		Lighting Conductor	CNV7253
24	Connector(CN501)	CKX1064	74		Holder	CNV7256
25	Holder	CNC9591	75		Holder	CNV7257
26	Holder	CND1588	76		Holder	CNV7258
27	FM/AM Tuner Unit	CWE1630	77		Holder	CNV7259
28	Holder	CNC8855	78		Holder	CNV7260
29	Terminal(CN802,CN803)	VNF1084	79		Holder	CNV7261
30	Transistor(Q809,811,812)	2SB1185	80		Holder	CNV7316
31	Screw	BPZ20P080FTC	81		Holder	CNV7317
32	Keyboard Unit	CWS1364	82		Lighting Conductor	CNV7319
33	LCD	CAW1722	83		Lighting Conductor	CNV7320
34	Connector(CN901)	CKS4361	84		Lighting Conductor	CNV7321
35	Connector(CN904)	CKS4591	85		Lighting Conductor	CNV7330
36	Connector(CN905)	CKS4591	86		Lighting Conductor	CNV7467
37	Connector(CN902)	CKS4592	87		Lighting Conductor	CNV7469
38	Connector(CN903)	CKS4592	88		Holder	CNV7472
39	Holder	CND1788	89		Holder Unit	CXB8886
40	Sheet	CNM7958	90		Grille Unit	CXB9134
41	Seal	CNM7970	91		Knob Unit	CXB9458
42	Seal	CNM7971	92		Screw	BMZ50P080FTC
43	Seal	CNM8261			(FX-M8427ZT/UC)
44	Connector	CNV7249	93		86211-48030-A	CND1247
45	Lighting Conductor	CNV7250			(FX-M8427ZT/UC)
46	Rubber	CNV7323	94		Screw	IMS26P060FTC
47	Rubber	CNV7324	95		86212-48030-A	CND1248
48	Rubber	CNV7325			(FX-M8427ZT/UC)
49	Screw	IMS26P060FTC	96		Grille Assy	CXC2064
50	Sheet	CNM8435	97		Screw	BPZ20P080FTC

FX-M8427ZT/UC	9

A

B

C

D

E

F

5		6		7		8

1		2		3		4

A 2.3 CD MECHANISM MODULE

B

C

UD321BR

GEM1035

GEM1035

D

E

CE

F

10	FX-M8427ZT/UC

1		2		3		4

5		6		7		8

- CD MECHANISM MODULE SECTION PARTS LIST

Mark No. Description		Part No.	Mark No. Description			Part No.
1	Control Unit	CWX2608		46	Gear	CNV6320
2	Connector(CN701)	CKS1959	47		Arm	CNV6322
3	Connector(CN101)	CKS3486	48		Arm	CNV6323
4	Screw	BMZ20P025FMC	49		Arm	CNV6324
5	Screw	BSZ20P040FMC	50		Arm	CNV6888
6	Screw(M2x4)	CBA1362	51		Arm	CNV6889
7	Screw(M2x3)	CBA1527	52		Guide	CNV6327
8	Screw	CBA1545	53		Arm	CNV6924
9	Washer	CBF1037	54		Guide	CNV6921
10	Washer	CBF1038	55		Rack	CNV6923
11	Washer	CBF1039	56		Clamper	CNV6331
12	Washer	CBF1060	57		Arm	CNV6332
13	Spring	CBH2378	58		Guide	CNV6333
14	Spring	CBH2379	59		Cover	CNV6334
15	Spring	CBH2514	60		Arm	CNV6335
16	Spring	CBH2533	61		Guide	CNV6336
17	Spring	CBH2382	62		Roller	CNV6338
18	Spring	CBH2383	63		Damper	CNV6175
19	Spring	CBH2384	64		Damper	CNV6662
20	Spring	CBH2527	65		Guide	CNV6925
21	Spring	CBH2386	66		Chassis Unit	CXB7980
22	Spring	CBH2537		* 67 Arm Unit		CXB7983
23	Spring	CBH2390	68		Arm Unit	CXB7984
24	Spring	CBH2391	69		Arm Unit	CXB7985
25	Spring	CBH2523	70		Motor Unit(M2)	CXB8284
26	Spring	CBH2426	71		Screw Unit	CXB5904
27	Spring	CBH2444	72		Gear Unit	CXB8076
28	Spring	CBL1561	73		Bracket Unit	CXB7982
29	Spring	CBL1553	74		Motor Unit(M1)	CXB6007
30	Shaft	CLA3845	75		Arm Unit	CXB8504
31	Roller	CLA3910	76		Screw(M2x5)	EBA1028
32	Frame	CNC9654	77		Screw	JFZ20P020FMC
33	Lever	CNC9664	78		Screw	JGZ17P020FZK
34	Lever	CNC8949	79		Washer	YE15FUC
35	Arm	CNC9661	80		Washer	YE20FUC
36	Arm	CNC9016	81		Pickup Unit(Service)(P9)	CXX1482
37	Arm	CNC9017	82		Screw	IMS26P030FMC
38	Bracket	CNC9123	83		Guide	CNV6922
39	Frame	CNC8947	84		Roller	CNV6887
40	Belt	CNT1086	85		Spring	CBH2509
41	Gear	CNV6886	86		Spring	CBH2512
42	Gear	CNV6316	87		Spring	CBH2536
43	Gear	CNV6317	88		Collar	CNV6906
44	Gear	CNV6318
45	Gear	CNV6319

FX-M8427ZT/UC	11

A

B

C

D

E

F

5		6		7		8

1		2		3		4

A 2.4 CASSETTE MECHANISM MODULE

For grease application, refer to the service manual for CX-1011 (CRT2406).

B

C

D

FD

E

GE

F

12	FX-M8427ZT/UC

1		2		3		4

5		6		7		8

- CASSETTE MECHANISM MODULE SECTION PARTS LIST

	Mark No. Description		Part No.		Mark No. Description		Part No.
1		Screw	BSZ20P040FMC	46		Pinch Roller	ENV1518
2		Washer	CBF1037	47		Pinch Holder Unit	EXA1607
3		Washer	CBG1003	48		Pinch Roller	ENV1518
4		Screw	EBA1028	49		Reel Unit	EXA1625
5		Screw	CBA1037	50		Head Base Unit	EXA1611
6		Spring	EBH1653	51		Lever Unit	EXA1587
7		Spring	EBH1642	52		Gear Unit	EXA1596
8		Spring	EBH1641	53		Motor Unit(M2)	EXA1623
9		Spring	EBH1626	54		Washer	HBF-179
10		Spring	EBH1627	55		Spring	EBH1537
11		Spring	EBH1648	56		Worm Gear	ENV1564
12		Cord	EDD1024	57		Spring	EBH1655
13		Photo-reflector(Q101)	EGN1004	58		Lever	ENC1548
14		Arm	ENC1526	59		Washer	YE15FUC
15		Lever Unit	EXA1610	60		Tube	ENM1039
16		Lever	ENC1543	61		Spring	EBH1645
17		Arm	ENC1532	62		Spring	EBH1545
18		Frame	ENC1533	63		Sensor Unit	EWM1041
19		Holder	ENC1547
20		Gear	ENC1535
21		Arm	ENC1550
22		Roller	ENR1040
23		Belt	ENT1027
24		Collar	ENV1508
25		Arm	ENV1539
26		Arm	ENV1540
27		Gear	ENV1569
28		Gear	ENV1547
29		Gear	ENR1044
30		Worm Wheel	ENV1559
31		Lever	ENV1551
32		Flywheel	ENV1554
33		Gathering PCB	ENX1073
34		Switch(S101,S102,S103)	ESG1007
35		Deck Unit	EWM1043
36		Plug(CN251)	CKS3540
37		Gathering PCB	ENX1076
38		Motor Unit(M1)	EXA1618
39		Motor	EXM1035
40		Head Assy(HD1)	EXA1594
41		Arm	ENC1537
42		Screw	JGZ20P025FNI
43		Bracket	ENC1559
44		Chassis Unit	EXA1636
45		Pinch Holder Unit	EXA1608

FX-M8427ZT/UC	13

A

B

C

D

E

F

5		6		7		8

1		2		3		4

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

A

FM/AM TUNER UNIT

		FM/AM 1ST IF 10.7MHz			MPXREF 41kHz
		AMRF	T51 Q51 CF51 CF52 CF53		AMDET
	AMANT
		ATT
	28				IC 2 FM MPX	L ch	6				TUNL
						R ch	5
						AMIN	20
CN501
		ANT ADJ		IC1		COMP 21
MAIN ANTENNA
				MIXER, IF AMP, DET.		LDET
							18
SUB ANTENNA	FMANT	ATT
	27
	26 RFGND	FMRF					20		IC252	5	RDT
				CF202			RBDS	PM4009A
							DECODER	11	12
			IMG ADJ	AM 2ND IF X901	IC 3				X251
					EEPROM
				450kHz 10.25MHz

B

C

D

RF ADJ

		LOCH	LOCL
		23	25
	MFIX	FMSD
	13	Q501
5	SUB IC 501 NIN 1	COMP
6	LA1061M

MAIN

DIVERSITY

WC AMPNS

VCC

VDD

CREQ

DI/DO

FMLOCL

DGND

CE2

CK

CE1

SDBW

SL

FMSD

NL1

NL2

STIND

AMDET

7

17

22

10

19

14

24

11

12

15

16

8

13

2

3

4

1

9

AUDIO+B

AM NOISE CANCELER Q561

SWVDD

3

IC561

9

AM

HA12181FP

FMSD

PU UNIT

EC CONTROL UNIT

SERVICE(P9)

CN351

CN101 Q101

CN701

LASER

Q351

DIODE

LD-

15

9 LDO

24

38 RFI

LO 85

L-OUT 14

14

MD

RFRPIN

16

43 FEI

5

8 MDI

FEO

78

HOLOGRAM

AC,BD

TEO

14

46

TEI

79

UNIT

F,E

RF-AMP

SERVO

FO+

1

FOP

CONTROL,

FOCUS ACT.

DSP,

TRACKING ACT.

TO+

4

TOP

IC 101

LPF, DAC

LD+

MONITOR

14

VDD

TA2153FN

12

TD/FD

DIODE

FOP

IC 201

14

TOP

SD/MD

TC9495FP

SPINDLE

M

MOTOR

16

SOP

15

SOM

LOADING

M

17

LCOP

LOEJ 10

/CARRIAGE

18

LCOM LOEJ

22

10

MOTOR

MUTE

9

CONT 11

11

ACT

IC 401

/MOTOR DRIVER BA5996FM

DSCSNS 17

17

HOME 16

11

S901

HOME

VD

VD

2

2

12EJ

DISC

5V REGULATOR

C

SENSE

SENSE

CLAMP

8EJ

4

IC 701

2

SENSE

SENSE

VDD

BA05SFP

1

CD5VON

1

1

				F DECK UNIT
E				CN252						CN251			CN353
			1								4
	FWD					EQ AMP			16	TAPE+B		4	AUDIO+B
	L-ch			37
						IC251
			5	38						6	3	3	CSL
	REV			39		HA12216F				Lch
	L-ch		4
							12	10
	M2			CN254						MUTE	9
		M	2	MECHANISM
	SUB									B.U 20
	MOTOR		1	DRIVER18				19				20	BU
				5		IC351			17	STBY 19		19
				2
				1	PA2020A					MTL
	M1			CN255							8	8
	MAIN	M				7	10			LOAD
				8							11	11
	MOTOR			CN253
					3	1	5		4	6
	G SENSOR UNIT			CN256	3	1	5		4	6
F
				Q101
				REEL
				SENSE
							S102		S103	S101
							MODE		70 s	LOAD
14	FX-M8427ZT/UC
1	2			3								4

5		6		7		8

A

BALANCE TO UNBALANCE CONVERTER

LANL

7

IC201

5

TUNER

SELECTOR

NJM2068MD

MIXING AMP

2

TUNL

IC401

1

2

IC202

UNBALANCE TO BALANCE CONVERTER

NJM2068MD

TC4052BF

Q204

1

3

6

IC203

7

6

IC204

7

CSL

4

NJM2068MD

NJM2068MD

CDL

5

Q205

SELECTOR

2

IC302

UNBALANCE TO BALANCE CONVERTER

RDT

1

TC4052BF

3

6

IC303

7

6

IC304

7

Q304

CN472

4

NJM2068MD

NJM2068MD

5

Q305

Q864

Q866

SLD2

SWVDD

B

RSR+

Q865 Q867

GND2

RSR-

SW1

RSL+

SW2

RSL-

TX2

RMU

TX2

ADIM

FMSD

AUDIO+B

CN473

Q563(1/2)

SYSTEM

FMB

FMSD

1

FMSD

CONTROLLER

ISENS

SLD1

GND1

IC 601(1/2)

Q564(1/2)

isen

Q805

R

PD5772A

R

TX1

DI/DO

32

PDI

31

L

TX1

PDO

BSENS

CE2

11

L

PCE2

bsens

Q806

BU

ACC

CK

33

pck

MUTE

+B

CE1

34

PCE1

Q563(2/2)

SL

93

ASENS

SL

RDT

44

AMB

RDT

asens

Q807

ST

2

ST

Q564(2/2)

BU

+B

ACC

CN351

Q351

ILL+

ILL-

14

AVC-LAN BUS DRIVER

AMP

ANT

TX

1

IC701

6

RX

2 HA12187FP

5

ATX+ ATX-

C

IPPW

8

MUTE

RESET

MUTE

Q801

MUTE

1	IC 602	2		R+	R-
RESET	S-80835CNUA-B8U	VDD	AMP+B Q882
				L+	L-
12				SLD	GND

		reset	AMPW	42				CN801
				41		SYSPWR	Q884
	15		FMPW	52
		XIN	SYSMUTE1
				53			ANT+B Q451
	X601		sysmute@
				75		BU
	13	XOUT	bsens
			asens	73			AMB
				65
10			isen				Q452
							FMB
							Q453
11			TX	30
			RX1	29	RX
				21
			RX2
				22
			IPPW
17	39	XOUTLOEJ		56
			AMPMUTE
11	40	CONT	BLIGHT	28
				57
		SYSTEM	ADIM			SWVDD
2	89				Q722
		DSCSNS CONTROLLER

CD8R3V

IC 601(2/2)

VDCNT

63

87

A

D

home

PD5772A

Q721

Q818

BU

4

LAMP

1

23

CD5VON

43

VDD 5V REG.

ILLB REGULATOR

SYSPWR

B

IC870

Q811

Q819

S-812C56AUA-C3K

VDD

3

Q820

SWVDD

Q645

BU

LCDBL REGULATOR

Q870

Q813

80 stby

SWVDD

55

Q644

Q812

BU

A

VDCONT

Q809

B

SYSPWR

Q808

69

metal

83

Q814

CD8R3V

AUDIO+B

71

CSLOAD

ENC1-

ENC1+

82

ENC2-

85

ENC2+

84

Q822

cdej

csej

ENC2M

ENC1P ENC1M

Q815

Q802

20

74

ENC2P

LCDBL

CN804

ILLB

CD 8.3V REGULATOR

AUDIO +B REGULATOR

17

23

21 22

19 20

14,15

9-13

A MAIN UNIT

CN901

17

23

21 22

19 20

14,15

9-13

E

CDEJ

CSEJ

1

1

IC 901

3

7

7

LC75804W

4

6

KEY CONTROLLER

1 ILLCONT

6

LCD DRIVER

CN904

D LEFT PCB

KEY

CN902

PWR•VOL

VR901

MATRIX

LCD901

Q903

Q901

1

1

7

7

C RIGHT PCB

6

6

Q902

CN903

CN905

VR902

AUDIO•TUNE

F

B KEYBOARD PCB

FX-M8427ZT/UC

15

5

6

7

8

1		2		3		4

3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)

Note: When ordering service parts, be sure to refer to " EXPLODED VIEWS AND PARTS LIST" or "ELECTRICAL PARTS LIST".

A					Large size	A-a
					SCH diagram
	A-a		A-b

FM/AM TUNER UNIT FM(400Hz, 30%MOD):-24.2dBs

AM(400Hz, 30%MOD):-12.0dBs

A-a	A-b	Guide page
A-a	A-b	Detailed page

B

FM DIVERSITY

C

D

SYSTEM

CONTROLLER

E CN701 CD(1kHz):+4.0dBs

E

TAPE(1kHz):-7.4dBs F CN251

F

B

CN901

A

16	FX-M8427ZT/UC

1		2		3		4

5		6		7		8

A-b

A

A MAIN UNIT

B

FM:-14.4dBs TAPE:-7.4dBs

AM:-11.4dBs CDCH:-2.2dBs

CD:-1.6dBs

C

D

CDCH(1kHz):+8.3dBs

>

E

FM:-4.6dBs

AM:-1.6dBs

CD:+8.3dBs

TAPE:+2.4dBs

CDCH:+7.8dBs

350 H

NOTE :
				Symbol indicates a resistor.	Decimal points for resistor
				No differentiation is made between chip resistors and
					and capacitor fixed values
				discrete resistors.
					are expressed as :
				Symbol indicates a capacitor.	2.2 ←	2R2
				No differentiation is made between chip capacitors and	0.022	←R022
				discrete capacitors.

FX-M8427ZT/UC

The > 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.

F

A

17

5		6		7		8

1 2 3 4

A-b

1

2

3

A

B

C

D

E

A-a A-b	30%MOD):-24.2dBs	30%MOD):-12.0dBs
	FM(400Hz,	AM(400Hz,
	FM/AM TUNER UNIT

FM DIVERSITY

F

A-a

18	FX-M8427ZT/UC

1		2		3		4

5 6 7

4 5 6

SYSTEM

CONTROLLER

CD(1kHz):+4.0dBs

CN701	CN251
E	F
	TAPE(1kHz):-7.4dBs

FX-M8427ZT/UC

B CN901

8

A-b

A

B

C

A-a A-b

D

E

F

A-a

19

5		6		7		8

A

1 2 3 4

MAIN UNIT

A

B

C

A-a A-b

D

TAPE:-7.4dBs	CDCH:-2.2dBs
FM:-14.4dBs	AM:-11.4dBs CD:-1.6dBs

E

F

A-b	1	2	3
20			FX-M8427ZT/UC

1

2

3

4

5

4

5

6

M8427ZT/UC-FX

6

7

8

21

b-A

CDCH(1kHz):+8.3dBs

>

FM:-4.6dBs

AM:-1.6dBs

CD:+8.3dBs

TAPE:+2.4dBs

CDCH:+7.8dBs

350 H

NOTE :

Symbol indicates a resistor.

No differentiation is made between chip resistors and discrete resistors.

Symbol indicates a capacitor.

No differentiation is made between chip capacitors and discrete capacitors.

Decimal points for resistor and capacitor fixed values are expressed as :

2.2	←	2R2
0.022			←	R022
A-a	A-b

The > 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.

5

6

7

8

F

E

D

C

B

A

1 2 3 4

	3.3 KEYBOARD UNIT
A	B KEYBOARD PCB
	D LEFT PCB

B

SEEK•TRACK DOWN

C

D

SEEK•TRACK UP

E

A CN804

F

B D

22	FX-M8427ZT/UC

1		2		3		4

5		6		7		8

A

C RIGHT PCB

B

C

D

RACK UP

KEYBOARD UNIT

Consists of

KEYBOARD PCB

RIGHT PCB

LEFT PCB

B C

FX-M8427ZT/UC	23

E

F

5		6		7		8

1		2		3		4

	3.4 CD MECHANISM MODULE
A	E CONTROL UNIT
	PICKUP UNIT
	(SERVICE)(P9)	RF AMP
	CN101
B		91K
		91K

C

D

ACT/MOTOR DRIVER

	SPINDLE
	M1 CXB6007
E	LOADING/CARRIAGE
	M2 CXB8284

F

5V REGULATOR

E

24	FX-M8427ZT/UC

1		2		3		4

5		6		7		8

A

SERVO CONTROL/DSP/DAC/LPF

B

TC9495FP

C

16.934MHz

D

SWITCHES:

CONTROL UNIT

S901 : HOME SWITCH.....ON-OFF

S902 : CLAMP SWITCH....ON-OFF

S903 : DSCSNS SWITCH....ON-OFF

S904 : 12EJ SWITCH....ON-OFF

S905 : 8EJ SWITCH....ON-OFF

The underlined indicates the switch position.

E

CN701

A

CN351

F

E

FX-M8427ZT/UC	25

5		6		7		8

1		2		3		4

Note:1. The encircled numbers denote measuring pointes in the circuit diagram.

2.Reference voltage VREF:2.1V

A

- Waveforms

1 CH1:DSCSNS

5V/div.

1 CH1:DSCSNS

5V/div.

5 CH1:FD

500mV/div.

2 CH2:CLCONT

5V/div.

500ms/div.

2 CH2:CLCONT

5V/div.

500ms/div.

6 CH2:FOK

5V/div.

500ms/div.

3 CH3:LOEJ

5V/div.

3 CH3:LOEJ

5V/div.

7 CH3:MD

5V/div.

4 CH4:VD

10V/div.

4 CH4:VD

10V/div.

When setting up "Source On"

When loading (12 cm CD)

When loading (8 cm CD)

Ref. :

Ref. :

Ref. :

GND

GND

VREF

Mode :

Mode :

Mode :

B

Normal

Normal

Normal

5 CH1:FD

500mV/div.

8 CH1:FE

500mV/div.

500ms/div.

0 CH1:TE

500mV/div.

200ms/div.

6 CH2:FOK

5V/div.

100ms/div.

9 CH2:FOON

5V/div.

8 CH2:FE

500mV/div.

7 CH3:MD

5V/div.

When setting up "Source On"

When setting up "Source On"

Magnified drawing for "time"

C

Ref. :

Ref. :

Ref. :

VREF

VREF

VREF

Mode :

Mode :

Mode :

Normal

Normal

Normal

8 CH1:FE

500mV/div.

@ CH1:BCK

2V/div.

1µs/div.

# CH1:LRCK

2V/div.

10µs/div.

5 CH2:FD

500mV/div.

$ CH2:DOUT

2V/div.

1ms/div.

0 CH3:TE

500mV/div.

During "Play"

D

! CH4:TD

500mV/div.

During "Play"

During "Play"

Ref. :

Ref. :

Ref. :

VREF

VREF

VREF

Mode :

Mode :

Mode :

Normal

Normal

Normal

E

7 CH1:MD

500mV/div.

10µs/div.

% CH1:RFO

500mV/div.

0.5µs/div.

% CH1:RFO

500mV/div.

2ms/div.

0 CH2:TE

500mV/div.

During "Play"

During "Play"

During "Tracking Open"

Ref. :

Ref. :

Ref. :

VREF

VREF

VREF

Mode :

Mode :

Mode :

Normal

Normal

Test

F

26

FX-M8427ZT/UC

1		2		3		4