Pioneer FXMG-8237-ZT, FXMG-8337-ZT Service manual

ORDER NO.

CRT3025

PUB. NO.

CRT3025

AUDIO SYSTEM

HEAD UNIT

Manufactured for TOYOTA by PIONEER CORPORATION

VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No. LEXUS RX330 EUROPE February 2003 86120-48200 P3920 FX-MG8237ZT/EW

86120-48340 P3920 FX-MG8237ZT-91/EW 86120-48220 P3921 FX-MG8337ZT/EW 86120-48360 P3921 FX-MG8337ZT-91/EW

RX330

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

FX-MG8237ZT/EW(P3920) FX-MG8337ZT/EW(P3921)

LOAD

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

Model No. Order No. Mech. Module Remarks CX-1011 CRT2406 3L Cassette Mech. Module:Mech.Description, Disassembly CX-951 CRT2872 G2 CD Mech. Module:Circuit Description, Mech.Description, Disassembly

- Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. "Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.

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SAFETY INFORMATION

-

CD section precaution

1. Before disassembling the unit, be sure to turn off the power. Unplugging and plugging the connectors during power-on mode may damage the ICs inside the unit.

2. To protect the pickup unit from electrostatic discharge during servicing, take an appropriate treatment (shorting-solder) by referring to “the DISASSEMBLY” on page 83.

3. After replacing the pickup unit, be sure to check the grating. (See p.73.)

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.

1. Safety Precautions for those who Service this Unit.

• When checking or adjusting the emitting power of the laser diode exercise caution in order to get safe, reliable

results.

Caution:

1. During repair or tests, minimum distance of 13cm from the focus lens must be kept.

2. During repair or tests, do not view laser beam for 10 seconds or longer.

2. A “CLASS 1 LASER PRODUCT” label is affixed to the bottom of the player.

CLASS 1 LASER PRODUCT

4. Specifications of Laser Diode

Specifications of laser radiation fields to which human access is possible during service. Wavelength = 800 nanometers

3. The triangular label is attached to the mechanism unit frame.

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[ 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:

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.

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.

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.

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.

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1. SPECIFICATIONS

General

Power source................13.2V(10.5V–16.0V allowable) DC

Grounding system........................................Negative type

Backup current..............................................0.3mA or less

Dimensions............................320(W) x145(H) x175(D)mm

Weight..........................................................................2.8kg

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........................................87.5–108.0 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)

MW tuner

Frequency range ..........................................522–1,611 kHz

S/N 20dB useable sensibility........................34dBµ or less

S/N .................................................................42dB or more

Distortion..........................................................1.5% or less

IF interference ...............................................55dB or more

Image interference........................................45dB or more

LW tuner

Frequency range .............................................153–279 kHz

S/N 20dB useable sensibility........................40dBµ or less

S/N .................................................................42dB or more

Distortion..........................................................1.5% or less

IF interference ...............................................55dB or more

Image interference........................................45dB or more

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2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING(FX-MG8237ZT-91/EW, FX-MG8337ZT-91/EW)

* 1 Air Cap CHW1945 * 2 Air Cap CHW1948

3 Cover CEG1045 4 Polyethylene Bag CEG1026 5 Carton CHG4861

6 Contain Box CHL4861

Mark No. Description Part No. Mark No. Description Part No.

NOTE:

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

- 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-MG8237ZT-91/EW, FX-MG8337ZT-91/EW) SECTION PARTS LIST

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2.2 EXTERIOR

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1 Screw BMZ26P040FTC 2 Screw

See Contrast table(2)

3 Connector CDE7260 4 Screw BMZ20P025FMC 5 Screw BMZ26P040FMC

6 Screw(M2x2.5) CBA1076 7 Spring CBH2481 8 Spring CBH2482 9 Connector CDE7020

10 Connector CDE7035

11 Case CNB2705 12 Sheet CNM5981 13 Damper CNV6608 14 Control Unit(G2T) CWX2649 15 Connector(CN601) CKS1956

16 Connector(CN101) CKS4512 17

Service Mechanism Assy(G2T) CXX1658

18 Label CRW1429 19 Main Unit

See Contrast table(2)

20 Screw BMZ30P060FTC

21 Screw(M3x6) CBA1393 22 Connector(CN801) CKM1322 23 Connector(CN473) CKM1350 24 Connector(CN472) CKM1351 25 Plug(CN354) CKS-291

26 Connector(CN353) CKS3568 27 Connector(CN351) CKS3886 28 Connector(CN804) CKS4361 29 Connector(CN501) CKX1064 30 Holder CNC9639

31 Holder CNC9701 32 FM/AM Tuner Unit CWE1633 33 Holder CNC8855 34 Terminal(CN802) VNF1084 35 Terminal(CN803) VNF1084

36 Screw BPZ20P080FTC 37 Keyboard Unit CWS1363 38 LCD(LCD901) CAW1722 39 Connector(CN901) CKS4361 40 Connector(CN904) CKS4591

41 Connector(CN905) CKS4591 42 Connector(CN902) CKS4592 43 Connector(CN903) CKS4592 44 Holder CND1021 45 Sheet CNM7958

46 Seal CNM7970 47 Seal CNM7971 48 Connector CNV7249 49 Lighting Conductor CNV7250 50 Rubber CNV7323

51 Rubber CNV7324 52 Rubber CNV7325 53 Grille Assy

See Contrast table(2)

54 Screw BPZ20P080FTC 55 Button(1) CAC7599

56 Button(2) CAC7600 57 Button(3) CAC7601

58 Button(4) CAC7602 59 Button(5) CAC7603 60 Button(6) CAC7604

61 Button(DISC) CAC7620 62 Button(TAPE) CAC7621

63 Button(FM) CAC7622 64 Button(AM) CAC7623 65 Button(TEXT) CAC7624 66 Button(TAPE EJECT) CAC7625 67 Button(AF,TA) CAC7627

68 Button(LOAD) CAC7629 69 Button(CD EJECT) CAC7628 70 Button(SEEK,TRACK) CAC7626 71 Button(AST) CAC7630 72 Button(PTY) CAC7631 73 Door

See Contrast table(2)

74 Spring CBH2663 75 Lighting Conductor CNV7251

76 Lighting Conductor CNV7252 77 Lighting Conductor CNV7253 78 Holder CNV7256 79 Holder CNV7257 80 Holder CNV7258

81 Holder CNV7259 82 Holder CNV7260 83 Holder CNV7261 84 Holder CNV7316 85 Holder CNV7317

86 Lighting Conductor CNV7319 87 Lighting Conductor CNV7320 88 Lighting Conductor CNV7321 89 Lighting Conductor CNV7330 90 Lighting Conductor CNV7467

91 Lighting Conductor CNV7469 92 Holder CNV7472 93 Door Assy CXB9033 94 Knob Unit CXB8884 95 Chassis Unit CXB9795

96

Cassette Mechanism Module EXK4295

97 Screw IMS26P040FTC 98 Screw IMS26P060FTC 99 Frame CND1789

100 86211-48030-A

See Contrast table(2)

101 86212-48030-A See Contrast table(2) 102 Insulator CNM7496 103 Spacer CNM8078 104 Seal CNM8343 105 90467-10203 CNV5641

106 Guide CNV7306 107 Label CRW1425 108 Chassis Unit CXA8029 109 Transistor(Q809,811,812) 2SB1185 110 Bracket Unit CXB8082

111 Grille Unit

See Contrast table(2)

112 Sheet CNM8435

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Mark No. Description Part No. Mark No. Description Part No.

(1) EXTERIOR SECTION PARTS LIST

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Part No.

Mark No. Symbol and Description FX-MG8237ZT/EW FX-MG8337ZT/EW

2 Screw BMZ50P080FTC BMZ50P080FTC 19 Main Unit CWM8388 CWM8556 53 Grille Assy CXC2067 CXC2068 73 Door CAT2354 CAT2355

100 86211-48030-A CND1247 CND1247

101 86212-48030-A CND1248 CND1248 111 Grille Unit CXB9904 CXB9905

Part No.

Mark No. Symbol and Description FX-MG8237ZT-91/EW FX-MG8337ZT-91/EW

2 Screw Not used Not used 19 Main Unit CWM8388 CWM8556 53 Grille Assy CXC2067 CXC2068 73 Door CAT2354 CAT2355

100 86211-48030-A Not used Not used

101 86212-48030-A Not used Not used 111 Grille Unit CXB9904 CXB9905

(2) CONTRAST TABLE FX-MG8237ZT/EW, FX-MG8337ZT/EW, FX-MG8237ZT-91/EW and FX-MG8337ZT-91/EW are constructed the same except for the following:

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2.3 CD MECHANISM UNIT(1)

1

3

1

3

1

3

F

3

1

3

1

3

D

2

1

1:GEM1043 2:GEM1042 3:GEM1024

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Mark No. Description Part No. Mark No. Description Part No.

1 Screw BMZ20P020FZB 2 Screw BMZ20P025FTC 3 Screw(M2x2) CBA1556 4 Screw(M2x2.5) CBA1626 5 Screw(M2x2.5) CBA1609

6 Screw(M2x4.5) CBA1629 7 Spring CBH2460 8 Spring CBH2461 9 Spring CBH2484

10 Spring CBH2694

11 Spring CBH2486 12 Spring CBH2487 13 Spring CBH2500 14 Connector CDE6698 15 Collar CLA4329

16 Collar CLA4330 17 Collar CLA4331 18 Gear CND1649 19 Cam Gear CND1650 20 Frame CND1651

21 Steer CND1667 22 Arm CND1657 23 Bracket CND1658 24 Bracket CND1660

* 25 Lever CNC9953

26 Gear CNV6612 27 Holder CNV6648

28 Holder CNV6738 * 29 Chassis Unit CXC1642 * 30 Frame Unit CXC1643

* 31 Arm Unit CXC1647

32 Spring CBH2488

33 Holder Unit CXC1644

34 Holder Unit CXC1646

35 Tray Unit CXB6930

36 Lever Unit CXC1648 * 37 Lever Unit CXC1649

38 Lever Unit CXC1650 * 39 Lever Unit CXC1651

40 Cam Motor Assy CXB7522

41 Washer CBF1064

42 Gear CNV6610

43 Gear CNV6611

44 Motor Unit(-A)(M1) CXC1144

45 Screw JFZ20P020FTC

46 Washer YE20FTC 47 ELV Motor Assy CXB7523 48 Screw BMZ20P025FTC 49 Washer CBF1064 50 Holder CND1668

51 Gear CNV6634 52 Gear CNV6635 53 PCB Unit(LED) CWX2614

* 54 Connector(CN31) CKS4523

55 Motor Unit(-A)(M2) CXC1145

56 Screw JFZ20P020FTC

* 57 Arm Unit CXC1653

58 Bracket Unit CXC1654 * 59 Lever Unit CXC1658 * 60 Lever Unit CXC1659

* 61 Lever Unit CXC1661

62 Arm Assy CXB8822

63 Washer CBF1038

64 Spring CBH2489

65 Arm CNV6735

66 Bracket Unit CXC1652

67 Screw BMZ20P025FTC

68 Spring CBH2459

69 Volume(VR1) CCW1023

70 Bracket CND1652

71 Steer CND1656

72 Flexible PCB CNP6368

73 PCB Unit(SIDE) CWX2613

74 Connector(CN12) CKS3991 * 75 Connector(CN14) CKS4404

76 Connector(CN13) CKS4525

77 Connector(CN11) CKS4572

78 Lever Unit CXC1645 * 79 Lever Unit CXB9121 * 80 Lever Unit CXB9122

81 Screw JFZ20P020FTC

82 Washer CBF1037

- CD MECHANISM UNIT(1) SECTION PARTS LIST

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1:GEM1043 2:GEM1042

G

H

E

2.4 CD MECHANISM UNIT(2)

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Mark No. Description Part No. Mark No. Description Part No.

1 Carriage Mech. Assy(G2T) CXB8842 2 Screw(M2x2) CBA1556 3 Screw(M2x6) CBA1628 4 Washer CBF1038 5 Spring CBH2453

6 Spring CBH2480 7 Spring CBL1521

* 8 Guide CNC9402

9 Flexible PCB CNP6217

10 Holder CNV6624

11 Holder CNV6625 12 Rack CNV6642 13 Arm CNV6731 14 Lever CNV6736 15 Holder CNV6737

16 PCB Unit CWX2611 17 Connector(CN41) CKS3785 18 Connector(CN42) CKS4508 19 Connector(CN1) CKS4508 20 Support Wheel Unit CXC1768

21 Screw Unit(-B) CXB7518 22 Carriage Motor Assy CXB7521 23 Washer CBF1038 24 Belt CNT1088 25 Pulley CNV6627

26 Gear CNV6629 27 Motor Unit(-A)(M3) CXC1143 28 Screw JFZ14P020FTC 29 Loading Mech. Assy CXB7525 30 Washer CBF1037

* 31 Washer CBF1075 * 32 Spring CBH2450

33 Spring CBH2452 * 34 Spring CBH2457 * 35 Spring CBH2580

* 36 Frame CND1653 * 37 Arm CND1654 * 38 Sheet CNM7295

39 Roller CNV6616

40 Collar CNV6617

* 41 Guide CNV6622 * 42 Holder CNV6636 * 43 Lever CNV6732 * 44 Lever CNV6733

45 Collar CNV6734

* 46 Holder CNV7144

47 Screw JFZ12P018FTC 48 Washer CBF1037

* 49 Motor Unit(-A) CXC1146

50 Shaft Unit(-C) CXB7528

51 Screw JFZ20P020FTC

52 PU Unit(PX1)(Service) CXX1569 * 53 Gear CNV6620 * 54 Gear CNV6621

55 Switch(S1,2) CSN1057

* 56 Connector CDE6674

- CD MECHANISM UNIT(2) SECTION PARTS LIST

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2.5 CASSETTE MECHANISM MODULE

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I

J

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

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- CASSETTE MECHANISM MODULE SECTION PARTS LIST

1 Screw BSZ20P040FMC 2 Washer CBF1037 3 Washer CBG1003 4 Screw EBA1028 5 Screw CBA1037

6 Spring EBH1653 7 Spring EBH1642 8 Spring EBH1641 9 Spring EBH1626

10 Spring EBH1627

11 Spring EBH1648 12 Cord EDD1024 13 Photo-reflector(Q101) EGN1004 14 Arm ENC1526 15 Lever Unit EXA1610

16 Lever ENC1543 17 Arm ENC1532 18 Frame ENC1533 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

46 Pinch Roller ENV1518 47 Pinch Holder Unit EXA1607 48 Pinch Roller ENV1518 49 Reel Unit EXA1625 50 Head Base Unit EXA1611

51 Lever Unit EXA1587 52 Gear Unit EXA1596 53 Motor Unit(M2) EXA1623 54 Washer HBF-179 55 Spring EBH1537

56 Worm Gear ENV1564 57 Spring EBH1655 58 Lever ENC1548 59 Washer YE15FUC 60 Tube ENM1039

61 Spring EBH1645 62 Spring EBH1545 63 Sensor Unit EWM1041

Mark No. Description Part No. Mark No. Description Part No.

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3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM(1)

M

LOADING

VR1 ELV SENSE

VR11

S31 CAMLOAD

PU UNIT(SERVICE)(PX1)

PCB UNIT(M2 UNIT)

HOLOGRAM

UNIT

FOCUS ACT

TRACKING ACT

MD

LD+

LD-

LD

MD

FO+ TO+

CN41

M

SPINDLE

M3 CARRIAGE

CLAMP

10

2

1

16 14

A+C,B+D, E,F

2

A3

3 5

A2 A1

IC 1

BA6849FS

MOTOR DRIVER

CN1

EC

19

S2 CLAMP

HOME

S1 HOME

5

2

1

5

2

1

CN42

S41 LOAD3

PCB UNIT

23

14

13

28 26

6

9

10

1

11 12

23

14

13

28 26

6

9

10

1

11 12

PCB UNIT(SIDE)

CN12

S11 CAMCLMP

M

M1 CAMGEAR

CN31

M

M2 ELV

S32 CAMEOK

D31

D32

PCB UNIT (LED)

CN14

CN13

Q22 Q21

S21 LOAD1

S22 LOAD2

PCB UNIT (LOAD)

2

1

4 5

CN11

MD

23

32

33

LD+

LD-

FOP

18

TOP

20

SIN(EC)

40

CLAMP

36

HOME

37

LOADSW2

45

50

COP

34

COM

35

CGM

3

CGP

1

ELP

15

ELM

13

CAMOK

11

CAMLOAD

10

LED

12

ELVSNS

46

EREF

48

LOADPHT

7

LOADSW1

8

LOP

6

LOM

5

G

F

H

D

E

1

2

5

7

8

C

CN101

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20

VDCNT2

R

CN501

SUB ANTENNA

16

13

10

11

2

AUDIO+B

SWVDD

MAIN ANTENNA

IC 501

LA1061M

5 6

Q501

DIVERSITY

COMP

IC561

HA12181FP

AM NOISE CANCELER

CN351

SUB

MAIN

1

NIN

39

FMSD

FML

Q401

MFIX

13

CSL

BU

8

4

19

20

3

CN353

IC 3

EEPROM

28

27

FM/AM 1ST IF 10.7MHz

T51 Q51 CF51

CF52 CF53

IC1

MIXER, IF AMP, DET.

6

21

18

LDET

COMP

222510 14 12 15 16 8 13 2 3 4

CF202

VDD

VCC

DI/DO

CE2CKCE1

SDBWSLFMSD

NL1

NL2

IC 2 FM MPX

AMANT

FMANT

ATT

AMRF

FMRF

IMG ADJ

RF ADJ

X901

10.25MHz

ANT ADJ

LOCL

23

LOCH

AMDET

MPXREF 41kHz

AM 2ND IF

450kHz

19

CREQ

11

DGND

1

STIND

L ch

5

R ch

924

AMDET

FMLOCL

20

177

AMPNS

WC

26

RFGND

AMIN

Q561

IC252

PM4009A

X251

RDS DECODER

1211

20

8

AM

Q402

VDD

Q404

Q351

LDET

RDSMUTE

FMSD

1

CD9V

11

AUDIO+B

RDT

5

Q403

Q406

AMB

Q405

FMB

Q252

NL2

Q502

AUDIO+B

LOCL

Q504

SWVDD

STBY

B.U

MUTE

MTL

LOAD

5

1

4

2

1

3

4

11

9

20

19

8

I

DECK UNIT

IC251

HA12216F

IC351

PA2020A

EQ AMP

MECHANISM

DRIVER

CN251

CN252

CN254

CN255

CN253

6

16

TAPE+B

Lch

10

12

FWD L-ch

REV L-ch

37 38 39

18

19

17

3

15 6

8

7

10

CN256

3

15 6

S101

LOAD

S102

MODE

Q101 REEL

SENSE

M

M2

SUB

MOTOR

M1

MAIN

MOTOR

5 2 1

SENSOR UNIT

S103 70µs

4

J

I

23

32

33

18

20

40

36

37

45

50

34 35

3 1

15 13

11

10

12

46

48

7

8

6 5

CONTROL UNIT(G2T)

Q101

96

PD

CD CONTROL

97

LD

A+C,B+D,E,F

L-OUT

16

IC504(1/2)

TC74VHCT08AFT

3 1,2

IC 201

UPD63711GC

6 4,5

33

LRCKIN

31

SCKIN

3.3V - 5V CONVERTER

5V - 3.3V CONVERTER

IC505(1/2)

TC74VHC541FT

DOUT,LRCK, SCKO,RADV, SBSY

15

ZLRCK

14

ZSCK

IC501

SM5903BFP

SHOCK PROOF CONTROLLER

10

V+5

22

3V

IC507

MSM51V17400F6TFT

IC702

PD5748E

MECH. CONTROLLER

IC504(2/2)

TC74VHCT08AFT

IC505(2/2)

TC74VHC541FT

YMDATA, YMLD, YMCLK

21

ZSENSE

9,10

8

98

ZSENSE

BUFFER RAM

14

VDD

VCC2

3+3ch

DRIVER

IC 301 BD7962FM

ELV1,ELV2,ELVCONT,LD1,LD2, LOCONT,CG1,CG2

9

29

CONT

MUTE

MOTOR CONTROL

14

VD

XSI,XSO,XSCK,XSTB,XAO,XRST,FOK,LOCK, TSI,TSO,TSCK,TSTB,PACK,SBSY

SERVO DSP I/F

SERVO EQUALIZER OUTPUT

FD,TD,SD,MD

18

15

OUT1+

OUT2-

Q602

Q603

CD MUTE

VD

Q601

74

CDMUTE

CN101

CN501

BSI,BSO,BSCK,BRXEN,BSRQ,BRST

10

reset

LOUT

37

VDCONT

9

6

3

RESET

VDCONT

VDD

VD

17 18

IC 303

BA05SFP

5V REGULATOR

4

2

V+5

S-818A33AUC-BGN

3V REGULATOR

1

5

IC 302

3V

92

TEMP

94

VDIN

VD

26

OPOUT

COP

COM

ELP

ELM

LOP LOM CGM

CGP

19 20

2

3 21 22 34 35

OUT3+ OUT3-

OUT5OUT5+

OUT4+ OUT4OUT6+ OUT6-

VD

CLAMP

HOME LOADSW2 CAMCLMP

ELVSNS

EREF

72 79

82 23 91 92

HOME2

HOME LOADSW2 CAMCLMP

EREFF

CAMOK

21

CAMOK

CAMLOAD

22

CAMLOAD

LOADPHT

89

LOADPHT

LOADSW1

81

LOADSW1

ELVSENS

C

F

CN11

8

FM/AM TUNER UNIT

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

3.2 BLOCK DIAGRAM(2)

flashLAV www.club-lexus.ru

21

13

XOUT

X601

VDCNT2

17 23

17

20 74

23 21 22

19

21 22

19

20

LC75804W

IC 901

LCD901

20

14,15

14,1599

CD

EJECT

TAPE

EJECT

VDD

IC 602

S-80835CNUA-B8U

53

12

RESET

15

XIN

13

XOUT

RESET

75 73

28

BLIGHT

83 82

ENC1+

85

ENC2-

84

ENC2+

65

CONTROLLER

SYSTEM

IC 601(2/2)

KEY

MATRIX

CN804

CN902

VDD

KEYBOARD PCB

ENC2P

ENC2M

ENC1P

pwr

LCDBL

ILLB

cdej

csej

asens

bsens

Q818

Q819

BU

Q816

Q808

KEY CONTROLLER

LCD DRIVER

16

13

10

11

2

VR902

POWER•VOL

VR901

AUDIO CONTROL•TUNE

ENC1-

power

81

18

ENC1M

ILLB

101011

11

AVC-LAN BUS DRIVER

UNBALANCE TO BALANCE CONVERTER

IC701

HA12187FP

6

BU

AVC-LAN MUTE

Q801

ISENS

Q805

BSENS

Q806

ASENS

Q807

5

Q812

Q814

4

LAMP

Q802

Q809

Q815

CD9V

AUDIO+B

VDCONT2

SYSPWR

Q865

Q867

IC401

NJM2068MD

TUNER

MIXING AMP

1

IC203

NJM2068MD

67

IC204

NJM2068MD

67

Q864

Q205

sysmute

30 29 21

TX RX1 RX2

isens

22

IPPW

1 2

8

bsens

TX RX

isens

IPPW MUTE

RX

56

LANMUTE

CN351

Q811

Q813

BU

AUDIO +B REGULATOR

CD 9V REGULATOR

BU

Q563(1/2)

Q564(1/2)

Q563(2/2)

Q564(2/2)

AUDIO+B

FMB

AMB

42

AMPW

41

FMPW

FML

CSL

CDL

B

SWVDD

IC202

TC4052BF

IC302

TC4052BF

2

3

1

4

BALANCE TO UNBALANCE CONVERTER

IC303

NJM2068MD

67

IC304

NJM2068MD

67

3

ACC+B

R

L

R

SGND

mute

GND

TX

BU+B

TX

L

CN473

SW2

SW1

TX1

GND

ADIM

SLD1

CN472

RSR+

RSR-

RSL+

RSL-

rmut

ACC

+B

ILL-

ILL

ANT

AMP

TX-

TX+

mute

R-

R+

L-

L+

GND

SLD

CN801

Q351

Q204

Q305

Q304

IC870

S-812C56AUA-C3K

3

VDD

VDD5V REGULATOR

BU

Q870

1

CD9V

UNBALANCE TO BALANCE CONVERTER

SELECTOR

IC201

NJM2068MD

7

5

LANL

Q866

52

sysmute@

asens

Q451

Q452

Q453

AMB

FMB

ANT+B

Q645

SWVDD

Q644

55

SWVDD

43

SYSPWR

CONTROLLER

IC 601(1/2)

SYSTEM

FMSD RDSMUTE LDET DI/DO

CE2 CK CE1 SL

1

FMSD

3

RDSMUTE

19

ldet

32

PDI

11

PDO

33

PCE2

34

pck

93

PCE1

31

SL

MAIN UNIT

A

PD5789A

80

stby

69

mtl

71

CSLOAD

RDT

44

RDT

BU

ADIM

Q721

Q722

57

ADIM

SW5V

ADIM

1 2 6 7

ILLCONT

Q901

Q902

Q903

ILLB

Q907

Q908

ILLB

Q905

Q906

ILLB

34

CDILLRCDILLG

LCDBL

1 2 6 7

ILL2

ILL1

LEFT PCB

L

RIGHT PCB

K

4

KST2

KDT1

ENC2P

ENC2M

ENC1P

pwr

ENC1M

ENC2P ENC2M

ENC1P

pwr

ENC1M

CN904 CN902

CN905CN903

LDO,LCK,LCE,LDI,LRST

Q820

Q882

Q884

BU

SYSPWR

ILLB REGULATOR

ILL-

Q825

SWVDD

ILL-

94

ILL-

sysmute

sysmute@

Q860

Q861

AMPW

FMPW

Q863

BU

SWVDD

Q862

Q497

RSEMT

51

RSEMUTE

Q301

Q302

Q303

6

9

10

INH

B

A

SEL2b

SEL2a

sysmute

Q201

Q202

Q203

6

9

10

INH

B

A

SEL1b

SEL1a

sysmute@

45

SEL1b

46

SEL1a

48

SEL2b

49

SEL2a

53

sysmute

52

sysmute@

2

Q406

AMB

Q405

FMB

NL1

91

NL1

NL2

100

NL2

LOCL

10

LOCL

6

121213

13

BU

LANLP LANLM

BU

Q822

CREQ

26

currq

ST

2

ST

SDBW

23

SDBW

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

A-a A-b

A-a

A-b

A-a

Large size

SCH diagram

Guide page

Detailed page

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

A-a

A

FM/AM TUNER UNIT

C

CN501

I

CN251

B

CN901

A

MAIN UNIT

FX-MG8337ZT/E

R022 R022

FX-MG8237ZT/EW

R1 R1

C411 C412

SYSTEM CONTROLLER

FM(30%,400Hz):-24.9dBs AM(30%,400Hz):-11.8dBs

CD(1kHz):+3.6dBs

TAPE(1kHz):-7.5dBs

431

5

2

431

52

6

431

52

6

4

3

1

5

2

6

4

3

1

5

2

6

4

3

1

5

2

4

3

1

5

2

5

2

TUNER MUTE

FM DIVERSITY

RDS DECODER

ANTENNA

JACK

22

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

3.3 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)

flashLAV www.club-lexus.ru

A-b

A

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

2.2 2R2

0.022 R022

←

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.

Symbol indicates a resistor. No differentiation is made between chip resistors and discrete resistors.

NOTE :

Symbol indicates a capacitor. No differentiation is made between chip capacitors and discrete capacitors.

FX-MG8337ZT/EW

R022 R022

FX-MG8337ZT/EW

>

350µH

FM: -9.6dBs

AM:-11.5dBs

TAPE: -7.5dBs

CD: +2.3dBs

FM: -3.9dBs

AM: -5.8dBs

TAPE: -1.9dBs

CD:+8.0dBs

4

3

1

5

2

6

4

3

1

5

2

6

4

3

1

5

2

6

431

52

6

4

3

1

5

2

4

3

1

5

2

4

3

1

5

2

4

3

1

5

2

4

3

1

5

2

6

4

3

1

5

2

6

4

3

1

5

2

6

TUNER MIXING AMP

BALANCE TO UNBALANCE

UNBALANCE TO BALANCE

AUDIO SELECTOR

FOR RSA

AUDIO SELECTOR

FOR AMP

SYSTEM MUTE

ASENSEBSENSEISENSE

23

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

A-a

A-b A-a

A-a

A-b

1

2

FM/AM TUNER UNIT

A

MAIN UNIT

FX-MG8337ZT/EW

R022

FX-MG8237ZT/EW

R1

C411

C412

FM(30%,400Hz):-24.9dBs

AM(30%,400Hz):-11.8dBs

4

3

1

5

2

4

3

1

52

6

4

3

1

5

2

6

4

3

1

5

2

4

3

1

5

2

4

3

1

5

2

6

4

3

1

5

2

4

3

1

2

6

TUNER MUTE

FM DIVERSITY

RDS DECODER

TUNER

ANTENNA

JACK

24

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

A-a

A-b A-a

A-a

A-b

3

4

5 6

C

CN501

I

CN251

B

CN901

SYSTEM CONTROLLER

CD(1kHz):+3.6dBs

TAPE(1kHz):-7.5dBs

4

3

1

52

6

4

3

1

5

2

6

25

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

A-a

A-b

1

2

Decimal points for resistor

and capacitor fixed values

are expressed as :

2.2 2R2

0.022 R022

←

Symbol indicates a resistor.

No differentiation is made between chip resistors and

discrete resistors.

NOTE :

Symbol indicates a capacitor.

No differentiation is made between chip capacitors and

discrete capacitors.

FX-MG8337ZT/EW

FM: -9.6dBs

AM:-11.5dBs

TAPE: -7.5dBs

CD: +2.3dBs

4

1

2

6

4

3

1

5

6

4

3

1

5

2

4

3

1

5

2

4

3

1

5

2

4

3

1

5

2

4

3

152

6

TUNER MIXING AMP

BALANCE TO UNBALANCE

UNBALANCE TO BALANCE

AUDIO SELECTOR

FOR RSA

AUDIO SELECTOR

FOR AMP

SYSTEM MUTE

26

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

A-a

A-b

3

4

5 6

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.

>

350µH

FM: -3.9dBs

AM: -5.8dBs

TAPE: -1.9dBs

CD:+8.0dBs

4

3

1

5

2

6

4

3

152

6

ASENSEBSENSEISENSE

27

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

28

B L

R917

R919

R921

B

KEYBOARD PCB

L

LEFT PCB

A

CN804

SEEK•TRACK

DOWN

DISCTAPE

AM FM

4321

56

TAPE EJECTTEXT CD EJECTLOAD

TA

AFPTY

AUDIO

CONTROL•

TUNE

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

3.4 KEYBOARD UNIT

flashLAV www.club-lexus.ru

29

B K

2SC4116

R998

4R7K

R999

10K

K

RIGHT PCB

KEYBOARD UNIT Consists of KEYBOARD PCB RIGHT PCB LEFT PCB

1

5

POWER•VOL

SEEK•TRACK

UP

AST

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

C-a

C

D E

F

G H

VR1

ELVSENSE

CCW1023

10K

LOAD1

LOAD2

CAMGEAR MOTOR

M1 CXC1144

LOADING MOTOR

ELEVATION MOTOR

M2 CXC1145

CAMEOK

CAMLOAD

L1

LOAD3

S41

CSN1051

CRG MOTOR M3 CXC1143

CLAMP HOME

S2 S1

CSN1057

1

5

12

24

13

SPINDLE

MOTOR

MOTOR DRIVER

CD CONTROL

3+3ch

DRIVER

1K(B)

VCC

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

30

CN11

CN12

1

2

3

4

5

CN14

CN13

GR BL

CN31

RE WH

6 7 8 9 5 4 3 2 1

CN42

CN1

1 2 3 4 5

6 7 8

9 10 11 12

13 14

15 16 17

CN41

1 2 3 4 5

6 7 8

9 10 11 12

13 14

15 16 17

F

PCB UNIT

(SIDE)

G

PCB UNIT

H

PCB UNIT (M2 UNIT)

D

PCB UNIT (LED)

E

PCB UNIT(LOAD)

PU UNIT(SERVICE)(PX1)

F T C

S

SIGNAL LINE FOCUS SERVO LINE TRACKING SERVO LINE CARRIAGE SERVO LINE SPINDLE SERVO LINE

SL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

30

1 2 3 4 5 6 7 8

1 2 3

1 2 3 4 5 6 7 8

T T

T

T T

T

SL

S

C

C C

S

C

F

T

F

T

F

T

F T

T T F F

T

F F T

T F F T

SL

F

3 2

4

!

7

9

6

0

5

@

)81

: The power supply is shown with the marked box.

30

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

Pioneer FXMG-8237-ZT, FXMG-8337-ZT Service manual

SAFETY INFORMATION

CONTENTS

1. SPECIFICATIONS

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING(FX-MG8237ZT-91/EW, FX-MG8337ZT-91/EW)

2.2 EXTERIOR

2.3 CD MECHANISM UNIT(1)

2.4 CD MECHANISM UNIT(2)

2.5 CASSETTE MECHANISM MODULE

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM(1)

3.2 BLOCK DIAGRAM(2)

3.3 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)

3.4 KEYBOARD UNIT

3.5 CD MECHANISM MODULE(GUIDE PAGE)