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

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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

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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

3.5 CD MECHANISM MODULE(GUIDE PAGE)

flashLAV www.club-lexus.ru

C-b

C

SHOCK PROOF

MEMORY

CONTROLLER

BUFFER RAM

3.3V-5V CONVERTER

5V-3.3V CONVERTER

MECHANISM CONTROLLER

5V REGULATOR

3.3V REGULATOR

MUTE

A

CN351

C

CONTROL UNIT(G2T)

SL

#

$

%

^

&

(

*

31

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

A-a

C-b C-a

C-a

C-b

F

G H

1

VR1

ELVSENSE

CCW1023

10K

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

123456789

101112131415161718192021222324252627282930

CN11

CN12

CN14

678954321

CN42

CN1

123456789

10111213141516

17

CN41

123456789

10111213141516

17

F

PCB UNIT(SIDE)

G

PCB UNIT

H

PCB UNIT

(M2 UNIT)

PU UNIT(SERVICE)(PX1)

123456789

101112131415161718192021222324252627282930

123

4

T

SL

S

C

S

C

F T

F

T

F

T

TFF

T

TFF

T

SL

F

!

7

9

6

0

5

@

)

8

1

32

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

A-a

C-b C-a

C-a

C-b

D E

2

3

LOAD1

LOAD2

CAMGEAR MOTOR

M1 CXC1144

LOADING MOTOR

ELEVATION MOTOR

M2 CXC1145

CAMEOK

CAMLOAD

3+3ch

DRIVER

30

12345

CN14

CN13

GR

BL

CN31

RE

WH

17

D

PCB UNIT

(LED)

E

PCB UNIT(LOAD)

PU UNIT(SERVICE)(PX1)

30

1234567

8

123

1234567

8

F

T

C

S

SIGNAL LINE

FOCUS SERVO LINE

TRACKING SERVO LINE

CARRIAGE SERVO LINE

SPINDLE SERVO LINE

SL

: The power supply is shown with the marked box.

C

S

F

T

TTF

F

3

2

4

33

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-b

1

SHOCK PROOF

MEMORY

CONTROLLER

BUFFER RAM

3.3V-5V CONVERTER

5V-3.3V CONVERTER

3.3V REGULATOR

MUTE

A

CN351

C

CONTROL UNIT(G2T)

SL

%

^

&

(

*

34

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

C-a

C-b

2

3

MECHANISM CONTROLLER

5V REGULATOR

3.3V REGULATOR

#

$

35

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

36

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

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

CH1 : 1 FDX

Mode:Test CH2 : 2 FOP CH3 : 3 FOM

CH1 : 5 RFO CH2 : 6 TE CH3 : 7 TEC

Mode:Test

CH4 : 4 EC Focus search mode

CH1 : 5 RFO

Mode:Test CH2 : 6 TE CH3 : 8 TDX

1 Track Jump

Tracking open

CH1 : 5 RFO CH2 : 6 TE CH3 : 8 TDX

4 Track Jump

Mode:Test

CH1 : 5 RFO CH2 : 6 TE CH3 : 8 TDX

10 Track Jump

Mode:Test

CH1 : 5 RFO CH2 : 6 TE CH3 : 8 TDX

32 Track Jump

Mode:Test

flashLAV www.club-lexus.ru

37

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

CH1 : 6 TE

Mode:Normal CH2 : 9 FE CH3 : 0 RFI

Focus close

CH1 : $ STSMO

Mode:Normal

CH2 : 6 TE

Memory capacity (remaining) at the starting of PLAY

CH1 : 1 FDX CH2 : ! FOK CH3 : @ MDX CH4 : # FG Setup

CH1 : 9 FE CH2 : 1 FDX CH3 : 6 TE CH4 : 8 TDX During "Play"

Mode:Normal

CH1 : $ RFO

Mode:Normal

CH2 : 6 TE

Memory capacity (remaining) during PLAY

CH1 : % LRCK

Mode:Normal CH2 : ^ SCKO CH3 : & DOUT

Digital audio data(x2 speed)

flashLAV www.club-lexus.ru

38

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

CH1 : * LOUT CH2 : ( ROUT

Mode:Normal

CH1 : 6 TE CH2 : 8 TDX

Mode:Normal

CH3 : ) SD

Audio output(1kHz , 0dB)

CH1 : 1 FDX

Mode:Normal

CH4 : 4 EC During inside / outside search

CH2 : ! FOK CH3 : @ MDX CH4 : # FG DISC stop

flashLAV www.club-lexus.ru

39

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

DECK UNIT

MUTE

HA12216F

11

12

13

14

15

16

17

18

19

20

40

39

38

37

36

35

34

33

32

31

30

292827

26

252423

22

21

1

234

5

678

9

10

R256

180

R287

0R0

C271

1/50

R284 0R0

R283 0R0

R282 0R0

C254 390P

C253 390P

C252 390P

C251 390P

R281 0R0

R255

180

C256

R01

R258

18K

R402

3R3K

R403 910

C272

R1

R288

0R0

R285 0R0

HD1 HEAD ASSY EXA1594

TEST TAPE NCT-150 (400Hz, 200nWb/m)

RL

RR

FR

FL

C302

R1

VR302

33K(B)

-8.24dBs(300mV)±1dB

Fwd-R

Fwd-L

Rev-R

Rev-L

NFI(L) RIN(L) RIP FIN(L) GND GND FIN(R) VREF RIN(R) NFI(R)

M-OUT(R)

EQOUT(R)

TAI(R)

BIAS

RAI(R)

PBOUT(R)

DET(L)

MUTE

MSGV(R)

MAOUT

MSI

MSDET

MSGV

F/R

120/70

NR

MOUT(L)

EQOUT(L)

TAI(L)

NC

RAI(L)

PBOUT(L)

NC

DET(L)

MSGV(S)

CN252

CN251

DOLBY B NR

IC251

VR301

33K(B)

C310

R1

C309

R1

R321

0R0

VCC

CCP1280

NC

MSOUT

NC

R260

13K

R262

270K

C401

3900P

R401

15K

R276

100K

C402

R33

C404

R01

C403

R022

R273 0R0

R272

0R0

C40

Q271 2SC4116

R271

18K

C301

R1

R259

13K

C255

R01

R257

18K

R261

270K

A

I

CN353

R292

0R0

R286 0R0

R296

0R0

I

40

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

3.6 CASSETTE MECHANISM MODULE

flashLAV www.club-lexus.ru

41

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

SWITCHES: SENSOR UNIT

S101:LOAD SWITCH..........EJECT-PLAY

S102:MODE SWITCH............ON-OFF

S103:70µs SWITCH...............ON-OFF

The underlined indicates the switch position.

R275

47K

R351 1K

R352 1K

R353 1K

R354 1K

R373 0R0

R355

270K

C352

3900P

R362 300

C351 R22

C353 R01

C354 R01

R374 0R0

C356 R01

C355 R1

D352 1SS355

M1 MOTOR UNIT (MAIN MOTOR) EXA1618

M2 MOTOR UNIT (SUB MOTOR) EXA1623

RS3

RS2

RS1

SC2

SC1

TAB

MC

CE

VCC2

NC

VCC

MCS

RRS

FRS

RSB

C

TAB

MS2

NC

MM

SM1

RSB GND RS

mtl

MCS

load

CN255

CN253

CN254

MECHANISM

DRIVER

IC351 PA2020A

R375 0R0

R404 270K

C405

R033

R277

220K

R278

100K

Q271 2SC4116

SENSOR UNIT

S101

LOAD

ESG1007x3

S102

MODE

Q101 EGN1004

CN256

S103

70µs

J

L101

L102

JI

flashLAV www.club-lexus.ru

42

Capacitor

Connector

P.C.Board

Chip Part

A

MAIN UNIT

SIDE B

SIDE A

NOTE FOR PCB DIAGRAMS

1.The parts mounted on this PCB include all necessary parts for several destination. For further information for respective destinations, be sure to check with the schematic dia gram.

2.Viewpoint of PCB diagrams

C

CN501

B

CN901

I

CN251

CAR HA

76859

4

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

4. PCB CONNECTION DIAGRAM

4.1 MAIN UNIT

flashLAV www.club-lexus.ru

43

A

SIDE A

FRONT

FM/AM TUNER UNIT

CAR HARNESS CAR HARNESS

CAR HARNESS

ANTENNA

SUB

MAIN

11112213314415516617718819920

10

111012913814715616517418319220

1

76859410311212

1

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

44

A

MAIN UNIT

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

45

A

SIDE B

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

B

KEYBOARD PCB

SIDE A

SEEK•TRACK

DOWN

CD EJECT

TAPE EJECT

1 1 2 2 3 3 4 45 56 6

TEXT

LOAD

TA

DISC

TAPE

FM

AM

FM

46

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

4.2 KEYBOARD PCB

flashLAV www.club-lexus.ru

B

KEYBOARD PCB

SIDE B

A

CN804

K

CN905

L

CN904

47

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

48

C

CONTROL UNIT (G2T)

SIDE A

IC,Q

A

CN351

F

CN11

REFO

E

F

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

4.3 CD MECHANISM MODULE

flashLAV www.club-lexus.ru

49

C

CONTROL UNIT (G2T)

SIDE B

IC,Q

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

D

PCB UNIT (LED)

E

PCB UNIT (LOAD)

E

F

CN14

M

M2 ELEVATION

RE

WH

CAMOK

CAMLOAD

5

6

7

8

LOAD2

LOAD1

F

CN13

50

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

F

PCB UNIT (SIDE)

F

PCB UNIT (SIDE)

SIDE A

SIDE B

E

M

LOADING

VR1 ELV SENSE

1 2 3 4 5

D

CN31

C

CN101

G

8

GR

BL

M

M1 CAMGEAR

51

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

M

M3

CRG

1

30

F

CN12

1

9

CN42

1

17

CN41

S41

LOAD3

H

CN1

PU UNIT(SERVICE)(PX1)

L1

G

PCB UNIT

52

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

H

PCB UNIT(M2 UNIT)

M

SPINDLE

S1

HOME

S2

CLAMP

1

9

CN1

G

CN42

C1

R2

R1

IC1

1

5

1012

13 15

20

24

R4

R3

HE3

HE2

HE1

53

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

I

DECK UNIT

SIDE A

SIDE B

I

DECK UNIT

CN251

2 4 6 8 10 12 14 16 18 20

1 3 5 7 9 11 13 15 17 19

IC,Q

IC251

Q351

Q352

ADJ

VR302

VR301

IC351

CN252

CN254

CN253

CN255

M1

M2

HEAD ASSY

CN256

21

22

1

10

11

20

21

30

31

40

5

15

25

35

R292

Q271

E

R278 R276

R277

R404 C405 C403 C402 C401

C310

C272

R273

R272

R275

R285

R286

R258

C404 R403 R402 R401

C271

IC251

VR302

R283

R282

R281

R284

C253

R253

C252

R252

R287

R296

R321

R288

R255

R261

C255

R257

R259

C301

R271

C309

VR301

C254

R251

C251

R254

C302

R260

C256

R262

R256

R354

R352

R351

R353

E

1

Q271

A

CN353

J

54

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

4.4 CASSETTE MECHANISM MODULE

flashLAV www.club-lexus.ru

J

1

2

3

4

5

6

S101

LOAD

S102

MODE

S103 70µs

CN256

Q101

REEL SENSE

L101

L102

I

CN253

J

SENSOR UNIT

55

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

flashLAV www.club-lexus.ru

K

L

LEFT PCB

SIDE A

L

LEFT PCB

SIDE B

K

RIGHT PCB

SIDE A

K

RIGHT PCB

SIDE B

L

B

CN902

B

CN903

PTY

AST

SEEK•TRACK

UP

PTY

AF

AUDIO CONTROL

•TUNE

POWER•VOL

56

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

4.5 RIGHT PCB, LEFT PCB

flashLAV www.club-lexus.ru

Unit Number : CWM8388(FX-MG8237ZT/EW) Unit Number : CWM8556(FX-MG8337ZT/EW) Unit Name : Main Unit

MISCELLANEOUS

IC 201 IC NJM2068MD IC 202 IC TC4052BF IC 203 IC NJM2068MD IC 204 IC NJM2068MD IC 252 IC PM4009A

IC 302 IC TC4052BF IC 303 IC NJM2068MD IC 304 IC NJM2068MD IC 401 IC NJM2068MD IC 501 IC LA1061M

IC 561 IC HA12181FP IC 601 IC PD5789A IC 602 IC

S-80835CNUA-B8U

IC 701 IC HA12187FP IC 870 IC

S-812C56AUA-C3K

Q 201 Transistor DTC144EU Q 202 Transistor DTC144EU Q 203 Transistor DTC144EU Q 204 Transistor FMG13 Q 205 Transistor FMG13

Q 252 Transistor 2SC3052-12 Q 301 Transistor DTC144EU Q 302 Transistor DTC144EU Q 303 Transistor DTC144EU Q 304 Transistor FMG13

Q 305 Transistor FMG13 Q 351 Transistor IMX1 Q 401 Transistor IMX1 Q 402 Transistor FMG13 Q 403 Transistor FMG13

Q 404 Transistor DTA114EU Q 405 Transistor DTC143TU Q 406 Transistor IMH3A Q 451 Transistor 2SB1260 Q 452 Transistor 2SC2712

Q 453 Transistor 2SC2712 Q 497 Transistor DTC114EU Q 501 Transistor IMX1 Q 502 Transistor 2SC2712 Q 504 Transistor 2SC2712

Q 561 Transistor 2SC2712 Q 563 Transistor IMT2A Q 564 Transistor IMH1A Q 644 Transistor DTC114EU Q 645 Transistor 2SA1162

Q 721 Transistor DTA114EU Q 722 Transistor 2SC2712 Q 801 Transistor DTC114EU Q 802 Transistor IMX1 Q 805 Transistor DTC144TUA

Q 806 Transistor DTC144TUA Q 807 Transistor DTC144TUA Q 808 Transistor 2SB1184F5 Q 809 Transistor 2SB1185 Q 811 Transistor 2SB1185

Q 812 Transistor 2SB1185 Q 813 Transistor 2SA1162 Q 814 Transistor 2SA1162 Q 815 Transistor IMX1 Q 816 Transistor 2SC4081

Q 818 Transistor 2SB1184F5 Q 819 Transistor 2SA1162 Q 820 Transistor IMX1 Q 822 Transistor 2SD2226K Q 825 Transistor 2SA1162

Q 860 Transistor 2SA1162 Q 861 Transistor DTC143EU Q 862 Transistor DTC144TUA Q 863 Transistor IMD3A Q 864 Transistor DTA114EU

Q 865 Transistor DTA114EU Q 866 Transistor DTA114EU Q 867 Transistor DTA114EU Q 870 Transistor 2SD1767 Q 882 Transistor 2SA1162

Q 884 Transistor DTC124EU D 203 Diode HZU4R7(B2) D 401 Diode 1SS355 D 451 Diode DAN202K D 452 Diode 1SS355

D 472 Diode MPG06G-6415G50 D 473 Diode MPG06G-6415G50 D 474 Diode 1SS355 D 475 Diode 1SS355 D 497 Diode UDZS20(B)

D 501 Diode 1SV241 D 502 Diode 1SV241 D 503 Diode DAP202K D 504 Diode 1SS355 D 703 Diode UDZS18(B)

D 704 Diode UDZS18(B) D 801 Diode 1SS355 D 802 Diode UDZS5R6(B) D 803 Diode RM4LFJ10 D 804 Diode 1SS355

D 805 Diode UDZS20(B) D 808 Diode HZU8R2(B2) D 809 Diode HZU7R5(B3) D 810 Diode HZU8R2(B2) D 811 Diode 1SS355

D 812 Diode HZU7R5(B3) D 813 Diode 1SS355 D 814 Diode HZU8R2(B3) D 860 Diode HZU8R2(B3) D 861 Diode 1SS355

57

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

5. ELECTRICAL PARTS LIST

NOTES:

- Parts whose parts numbers are omitted are subject to being not supplied.

- The part numbers shown below indicate chip components.

Chip Resistor

RS1/_S___J,RS1/__S___J

Chip Capacitor (except for CQS.....)

CKS....., CCS....., CSZS.....

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

A

flashLAV www.club-lexus.ru

D 862 Diode 1SS355 D 863 Diode DAP202K D 864 Diode 1SS355 D 870 Diode MPG06G-6415G50 D 871 Diode UDZS16(B)

D 882 Diode 1SS355 L 251 Inductor LCTA101J2520 L 252 Inductor LCTC100K3216 L 351 Inductor LCTC2R2K1608 L 352 Inductor LCTC2R2K1608

L 353 Inductor LCTC2R2K1608 L 354 Inductor LCTC2R2K1608 L 355 Inductor CTF1578 L 356 Inductor LCTC2R2K1608 L 357 Inductor CTF1306

L 358 Inductor CTF1306 L 359 Inductor CTF1306 L 360 Inductor CTF1306 L 361 Inductor CTF1306 L 363 Inductor LFEA4R7J

L 505 Ferri-Inductor LAU4R7K L 506 Coil CTB1102 L 507 Inductor LCTC6R8K3216 L 508 Inductor LCTC6R8K3216 L 509 Inductor LCTC6R8K3216

L 510 Inductor LCTA561J4532 L 511 Inductor LCTA4R7J2520 L 512 Inductor LCTA1R0J2520 L 513 Inductor LCTA1R0J2520 L 514 Inductor LCTA1R0J2520

L 561 Inductor LCTA4R7J2520 L 601 Inductor LCTA100J3225 L 801 Coil 350µH CTH1276 CG 501 Surge Protector DSP-201M-A21F CG 502 Surge Protector DSP-201M-A21F

X 251 Crystal Resonator 3.648MHz CSS1447 X 601 Radiator 10.0MHz CSS1577 VR 561 Semi-fixed 10kΩ(B) CCP1396 FU 471 Fuse 5A CEK1216

FM/AM Tuner Unit CWE1633

EF 352 EMI Filter CCG1163

RESISTORS

R 1 (FX-MG8337ZT/EW) RS1/16S0R0J R 2 (FX-MG8337ZT/EW) RS1/16S0R0J R 3 RS1/16S0R0J R 4 RS1/16S0R0J R 201 RS1/16S223J

R 202 RS1/16S223J R 203 RS1/16S223J R 204 RS1/16S223J R 205 RS1/16S223J R 206 RS1/16S223J

R 207 RS1/16S223J R 208 RS1/16S223J R 211 RS1/16S101J R 212 RS1/16S101J R 213 RS1/16S163J

R 214 RS1/16S163J R 215 RS1/16S163J R 216 RS1/16S163J R 217 RS1/16S163J R 218 RS1/16S163J

R 219 RS1/16S163J R 220 RS1/16S163J R 221 RS1/16S103J R 222 RS1/16S103J R 223 RS1/16S103J

R 224 RS1/16S103J R 225 RS1/16S181J R 226 RS1/16S181J R 227 RS1/16S181J R 228 RS1/16S181J

R 229 RS1/10S470J R 230 RS1/10S470J R 231 RS1/10S470J R 232 RS1/10S470J R 233 RS1/16S473J

R 234 RS1/16S473J R 235 RS1/16S473J R 237 RS1/16S473J R 238 RS1/16S473J R 239 RS1/16S473J

R 240 RS1/16S473J R 241 RS1/16S222J R 243 RS1/16S103J R 244 RS1/16S103J R 245 RS1/16S103J

R 246 RS1/16S103J R 247 RS1/16S223J R 248 RS1/16S223J R 249 RS1/16S223J R 250 RS1/16S223J

R 251 RS1/16S153J R 252 RS1/16S474J R 253 RS1/16S681J R 254 RS1/16S0R0J R 257 RS1/16S102J

R 261 RS1/16S225J R 267 RS1/16S222J R 285 RS1/16S104J R 286 RS1/16S104J R 287 RS1/16S104J

R 288 RS1/16S104J R 313 RS1/16S163J R 314 RS1/16S163J R 315 RS1/16S163J R 316 RS1/16S163J

R 317 RS1/16S163J R 318 RS1/16S163J R 319 RS1/16S163J R 320 RS1/16S163J R 321 RS1/16S103J

R 322 RS1/16S103J R 323 RS1/16S103J R 324 RS1/16S103J R 325 RS1/16S181J R 326 RS1/16S181J

R 327 RS1/16S181J R 328 RS1/16S181J R 329 RS1/10S470J R 330 RS1/10S470J R 331 RS1/10S470J

R 332 RS1/10S470J R 333 RS1/16S473J R 334 RS1/16S473J R 335 RS1/16S473J R 337 RS1/16S473J

R 338 RS1/16S473J R 339 RS1/16S473J R 340 RS1/16S473J R 351 RS1/16S272J R 352 RS1/16S272J

R 353 RS1/16S333J R 354 RS1/16S333J R 355 RS1/16S473J R 356 RS1/16S473J R 357 RS1/16S102J

58

1

234

12

34

F

E

D

C

B

A

FX-MG8237ZT/EW

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

flashLAV www.club-lexus.ru

R 358 RS1/16S102J R 359 RS1/16S100J R 369 RS1/16S100J R 401 RS1/16S432J R 402 RS1/16S432J

R 405 RS1/16S224J R 407 RS1/16S102J R 408 RS1/16S102J R 409 RS1/16S222J R 410 RS1/16S222J

R 411 RS1/16S224J R 412 RS1/16S224J R 413 RS1/16S102J R 414 RS1/16S102J R 417 RS1/16S753J

R 418 RS1/16S753J R 427 RS1/16S123J R 428 RS1/16S123J R 429 RS1/16S823J R 430 RS1/16S823J

R 431 RS1/16S473J R 432 RS1/16S473J R 433 RS1/16S101J R 451 RS1/16S102J R 452 RS1/16S223J

R 453 RS1/16S823J R 454 RS1/16S181J R 455 RS1/16S181J R 456 RS1/16S181J R 457 RS1/16S181J

R 458 RS1/16S181J R 459 RS1/16S223J R 460 RS1/16S223J R 474 RS1/8S103J R 497 RS1/8S221J

R 501 RS1/16S225J R 502 RS1/16S225J R 503 RS1/16S225J R 504 RS1/16S225J R 505 RS1/16S471J

R 506 RS1/16S104J R 507 RS1/16S103J R 508 RS1/16S103J R 509 RS1/16S334J R 510 RS1/16S101J

R 511 RS1/16S101J R 512 RS1/16S104J R 513 RS1/16S104J R 514 RS1/16S103J R 515 RS1/16S182J

R 516 RS1/16S683J R 517 RS1/16S224J R 518 RS1/16S473J R 519 RS1/16S473J R 520 RS1/16S102J

R 522 RS1/16S222J R 525 RS1/16S473J R 526 RS1/16S681J R 527 RS1/16S681J R 528 RS1/16S681J

R 529 RS1/16S103J R 530 RS1/16S681J R 531 RS1/16S473J R 532 RS1/16S473J R 533 RS1/16S472J

R 534 RS1/16S393J R 535 RS1/16S473J R 536 RS1/16S103J R 537 RS1/16S473J R 538 RS1/16S681J

R 539 RS1/16S681J R 541 RS1/16S681J R 542 RS1/16S681J R 543 RS1/16S681J R 544 RS1/16S681J

R 545 RS1/16S473J R 546 RS1/16S103J R 547 RS1/16S103J R 548 RS1/16S221J R 551 RS1/16S0R0J

R 552 RS1/16S0R0J R 561 RS1/16S104J R 562 RS1/16S123J R 563 RS1/16S105J R 564 RS1/16S562J

R 567 RS1/16S822J R 568 RS1/16S222J R 569 RS1/16S184J R 570 RS1/16S223J R 571 RS1/16S473J

R 582 RS1/16S332J R 583 RS1/16S332J R 584 RS1/16S332J R 585 RS1/16S332J R 601 RS1/16S102J

R 602 RS1/16S473J R 603 RS1/16S102J R 604 RS1/16S681J R 605 RS1/16S102J R 606 RS1/16S0R0J

R 607 RS1/16S104J R 608 RS1/16S102J R 609 RS1/16S681J R 610 RS1/16S0R0J R 611 RS1/16S0R0J

R 612 RS1/16S102J R 613 RS1/16S0R0J R 614 RS1/16S102J R 615 RS1/16S102J R 616 RS1/16S102J

R 617 RS1/16S102J R 618 RS1/16S102J R 619 RS1/16S0R0J R 620 RS1/16S0R0J R 621 RS1/16S681J

R 622 RS1/16S0R0J R 623 RS1/16S473J R 624 RS1/16S473J R 625 RS1/16S473J R 626 RS1/16S473J

R 627 RS1/16S473J R 628 RS1/16S0R0J R 629 RS1/16S472J R 630 RS1/16S0R0J R 631 RS1/16S0R0J

R 632 RS1/16S102J R 633 RS1/16S102J R 634 RS1/16S102J R 635 RS1/16S471J R 637 RS1/16S102J

R 638 RS1/16S102J R 640 RS1/16S473J R 641 RS1/16S473J R 642 RS1/16S104J R 643 RS1/16S104J

R 644 RS1/16S473J R 645 RS1/16S102J R 646 RS1/16S103J R 647 RS1/16S102J R 648 RS1/16S102J

59

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

=====Circuit Symbol and No.===Part Name Part No.

--- ------ ------------------------------------------ -------------------------

flashLAV www.club-lexus.ru

R 649 RS1/16S222J R 651 RS1/16S0R0J R 654 RS1/16S102J R 655 RS1/16S102J R 656 RS1/16S102J

R 657 RS1/16S102J R 658 RS1/16S223J R 659 RS1/16S102J R 660 RS1/16S102J R 661 RS1/16S102J

R 662 RS1/16S102J R 663 RS1/16S102J R 664 RS1/16S102J R 665 RS1/16S102J R 666 RS1/16S681J

R 667 RS1/16S473J R 668 RS1/16S473J R 669 RS1/16S473J R 670 RS1/16S473J R 671 RS1/16S473J

R 672 RS1/16S473J R 673 RS1/16S473J R 674 RS1/16S473J R 675 RS1/16S473J R 676 RS1/16S102J

R 677 RS1/16S102J R 678 RS1/16S102J R 679 RS1/16S102J R 680 RS1/16S102J R 681 RS1/16S102J

R 683 RS1/16S102J R 685 RS1/16S102J R 687 RS1/16S473J R 689 RS1/16S473J R 693 RS1/16S0R0J

R 698 RS1/16S102J R 699 RS1/16S473J R 701 RS1/16S473J R 703 RS1/4S101J R 704 RS1/4S101J

R 705 RS1PMF680J R 711 RS1/16S473J R 721 RS1/16S102J R 722 RS1/16S473J R 723 RS1/16S103J

R 801 RS1/8S222J R 802 RS1/8S472J R 803 RS1/8S472J R 804 RS1/8S472J R 805 RS1/8S472J

R 806 RS1/8S472J R 807 RS1/8S221J R 810 RS1/16S104J R 811 RS1/16S104J R 812 RS1/16S104J

R 819 RS1/16S102J R 820 RS1/16S123J R 821 RS1/16S103J R 822 RS1/16S103J R 823 RS1/16S223J

R 824 RS1/16S102J R 825 RS1/16S331J R 826 RS1/16S103J R 827 RS1/16S471J R 828 RS1/16S221J

R 829 RS1/16S223J R 830 RS1/10S221J R 831 RS1/16S331J R 832 RS1/16S471J R 833 RS1/16S221J

R 840 RS1/4S1R5J R 841 RS1/4S1R5J R 842 RS1/4S1R5J R 843 RS1/4S1R5J R 844 RS1/16S471J

R 845 RS1/16S471J R 846 RS1/16S105J R 847 RS1/10S361J R 848 RS1/16S3301D R 849 RS1/16S4301D

R 850 RS1/4S2R2J R 851 RS1/16S471J R 852 RS1/16S105J R 853 RS1/16S102J R 854 RS1/16S2701D

R 855 RS1/16S4301D R 856 RS1/16S103J R 857 RS1/16S103J R 858 RS1/4S1R5J R 859 RS1/4S1R5J

R 860 RS1/16S223J R 861 RS1/16S103J R 862 RS1/16S104J R 863 RS1/16S223J R 865 RS1/16S103J

R 866 RS1/16S103J R 867 RS1/16S472J R 868 RS1/16S102J R 869 RS1/16S102J R 870 RS1/10S102J

R 871 RS1/16S472J R 882 RD1/4PU121J R 884 RS1/16S223J R 886 RS1/16S472J R 888 RS1/16S473J

CAPACITORS

C 201 CEALNP4R7M16 C 202 CEALNP4R7M16 C 203 CEALNP4R7M16 C 204 CEALNP4R7M16 C 205 CCSRCH330J50

C 206 CCSRCH330J50 C 207 CCSRCH330J50 C 208 CCSRCH330J50 C 209 CKSRYB102K50 C 210 CKSRYB105K10

C 215 CEALNP4R7M16 C 216 CEALNP4R7M16 C 217 CEALNP4R7M16 C 218 CEALNP4R7M16 C 219 CCSRCH220J50

C 220 CCSRCH220J50 C 221 CCSRCH220J50 C 222 CCSRCH220J50 C 223 4.7µF/35V CCH1016 C 224 4.7µF/35V CCH1016

C 225 4.7µF/35V CCH1016 C 226 4.7µF/35V CCH1016 C 227 CCSRCH221J50 C 228 CCSRCH221J50 C 229 CCSRCH221J50

C 230 CCSRCH221J50 C 231 CKSRYB473K50 C 232 CEAL101M6R3 C 233 CKSRYB102K50 C 235 4.7µF/35V CCH1016

C 236 4.7µF/35V CCH1016 C 237 4.7µF/35V CCH1016 C 238 4.7µF/35V CCH1016 C 243 CKSQYB102K50 C 244 CKSQYB102K50

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C 245 CKSQYB102K50 C 246 CKSQYB102K50 C 251 CKSRYB104K16 C 252 CKSRYB104K16 C 253 CEAL220M6R3

C 254 CKSRYB104K16 C 256 CCSRCH270J50 C 257 CCSRCH270J50 C 259 CKSRYB104K16 C 260 CCSRCH471J50

C 261 CCSRCH471J50 C 262 CEAL4R7M35 C 263 CKSRYB473K50 C 264 CKSRYB103K50 C 281 CKSRYB182K50

C 282 CKSRYB182K50 C 283 CKSRYB182K50 C 284 CKSRYB182K50 C 309 CKSRYB102K50 C 310 CKSRYB105K10

C 319 CCSRCH220J50 C 320 CCSRCH220J50 C 321 CCSRCH220J50 C 322 CCSRCH220J50 C 323 4.7µF/35V CCH1016

C 324 4.7µF/35V CCH1016 C 325 4.7µF/35V CCH1016 C 326 4.7µF/35V CCH1016 C 327 CCSRCH221J50 C 328 CCSRCH221J50

C 329 CCSRCH221J50 C 330 CCSRCH221J50 C 335 4.7µF/35V CCH1016 C 336 4.7µF/35V CCH1016 C 337 4.7µF/35V CCH1016

C 338 4.7µF/35V CCH1016 C 351 CEAL4R7M35 C 352 CKSRYB103K50 C 353 4.7µF/35V CCH1016 C 354 4.7µF/35V CCH1016

C 355 CEAL101M10 C 356 CEAL100M16 C 357 CEAL220M10 C 381 CKSRYB182K50 C 382 CKSRYB182K50

C 383 CKSRYB182K50 C 384 CKSRYB182K50 C 401 CKSRYB123K50 C 402 CKSRYB123K50 C 403 4.7µF/35V CCH1016

C 404 4.7µF/35V CCH1016 C 405 CKSRYB153K50 C 406 CKSRYB102K50 C 411 (FX-MG8237ZT/EW) CKSRYB104K16 C 411 (FX-MG8337ZT/EW) CKSRYB223K50

C 412 (FX-MG8237ZT/EW) CKSRYB104K16 C 412 (FX-MG8337ZT/EW) CKSRYB223K50 C 415 CKSRYB105K10 C 416 CKSRYB105K10 C 417 CKSRYB561K50

C 418 CKSRYB561K50 C 421 CEAL470M6R3 C 480 CKSQYB102K50 C 492 CKSRYB473K50 C 493 CCSQCH221J50

C 494 CCSQCH221J50 C 497 CCSRCH221J50 C 503 CKSQYB103K50 C 504 CKSRYB222K50 C 505 CKSRYB222K50

C 506 CKSRYB222K50 C 507 CKSRYB222K50 C 508 CKSRYB103K50 C 509 CKSRYB103K50 C 510 CEAL100M16

C 511 CKSRYB472K50 C 512 CEAL100M16 C 513 CKSRYB473K50 C 514 CEAL2R2M50 C 515 CKSRYB102K50

C 516 CKSRYB103K50 C 517 CKSRYB103K50 C 518 CKSRYB392K50 C 519 CKSRYB103K50 C 520 CKSRYB103K50

C 521 CEAT101M10 C 522 CKSRYB103K50 C 523 CEAL100M16 C 524 CKSRYB472K50 C 525 CKSRYB182K50

C 528 CKSQYB103K50 C 530 CCSRCH100D50 C 561 CEAL3R3M50 C 562 CKSRYB333K16 C 563 CEALNP1R0M50

C 564 CQMA683J50 C 565 CQMA333J50 C 566 CQMA333J50 C 567 CQMA333J50 C 568 CKSRYB105K10

C 569 CKSRYB333K16 C 570 CKSRYB103K50 C 571 CKSRYB682K50 C 572 CEAL101M10 C 573 CKSRYB392K50

C 574 CKSRYB334K10 C 575 CKSRYB102K50 C 585 CKSRYB223K50 C 586 CKSRYB223K50 C 601 CKSRYB102K50

C 602 CKSRYB103K50 C 603 CKSRYB103K50 C 604 CKSRYB104K16 C 605 CEAL220M6R3 C 645 CKSRYB103K50

C 648 CKSRYB102K50 C 671 CCSRCH101J50 C 672 CCSRCH101J50 C 673 CCSRCH101J50 C 674 CCSRCH101J50

C 675 CCSRCH101J50 C 701 CKSRYB103K50 C 703 CCSRCH221J50 C 704 CCSRCH221J50 C 801 CKSRYB102K50

C 802 CEAL1R0M50 C 803 CKSRYB102K50 C 804 2200µF/16V CCH1186 C 805 CKSQYB473K50 C 806 CKSRYB102K50

C 807 CEAL1R0M50 C 808 CKSRYB102K50 C 814 CEAL1R0M50 C 815 CEAL1R0M50 C 816 CKSRYB103K50

C 817 100µF/10V CCH1402 C 818 CKSRYB103K50 C 819 100µF/10V CCH1402 C 820 CKSRYB103K50 C 824 CKSRYB472K50

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C 825 100µF/10V CCH1402 C 826 CKSRYB472K50 C 828 CKSRYB102K50 C 829 CKSRYB103K50 C 830 CKSRYB103K50

C 831 CKSRYB103K50 C 861 CEAL101M6R3 C 866 CEAL100M16 C 867 CEAL100M16 C 870 CKSRYB103K50

C 871 CKSRYB103K50 C 872 2200µF/16V CCH1186 C 873 CKSRYB105K10 C 875 CCSRCH101J50 C 883 CKSRYB103K50

Keyboard Unit Consists of

Keyboard PCB Right PCB Left PCB

Unit Number : CWS1363 Unit Name : Keyboard Unit

MISCELLANEOUS

IC 901 IC LC75804W Q 901 Transistor 2SB1132 Q 902 Transistor 2SC4116 Q 903 Transistor 2SB1132 Q 905 Transistor 2SA1162

Q 906 Transistor DTC143EK Q 907 Transistor 2SA1162 Q 908 Transistor DTC143EK D 901 Diode 1SS355 D 902 Diode 1SS355

D 903 Diode 1SS355 D 904 Diode 1SS355 D 905 Diode 1SS355 D 906 Chip LED NSCW310-0371 D 907 Chip LED NSCW310-0371

D 911 Chip LED NSCW310-0371 D 912 Chip LED NSCW310-0371 D 916 LED SML-310FC D 917 LED SML-310FC D 918 LED SML-310DT

D 919 LED SML-310DT D 920 Diode HZU4R7(B3) IL 901 Lamp 8V 60mA CEL1732 IL 902 Lamp 8V 60mA CEL1731 IL 903 Lamp 8V 60mA CEL1731

IL 904 Lamp 8V 60mA CEL1731 IL 905 Lamp 8V 60mA CEL1731 IL 906 Lamp 8V 60mA CEL1731 IL 907 Lamp 8V 60mA CEL1731 IL 908 Lamp 8V 60mA CEL1732

IL 911 Lamp 8V 60mA CEL1730 IL 912 Lamp 8V 60mA CEL1730 IL 913 Lamp 8V 60mA CEL1732 IL 914 Lamp 8V 60mA CEL1730 IL 915 Lamp 8V 60mA CEL1730

IL 916 Lamp 8V 60mA CEL1730 IL 917 Lamp 8V 60mA CEL1730 IL 918 Lamp 8V 60mA CEL1732 IL 919 Lamp 8V 60mA CEL1734 IL 920 Lamp 8V 60mA CEL1746

IL 921 Lamp 8V 60mA CEL1746 IL 922 Lamp 8V 60mA CEL1734 IL 923 Lamp 8V 60mA CEL1746 IL 924 Lamp 8V 60mA CEL1746 VR 901 Encoder(AUDIO CONTROL•TUNE) CSD1087

VR 902 Encoder(POWER•VOL) CSD1088 LCD 901 LCD CAW1722

RESISTORS

R 901 RAB4CQ102J R 902 RS1/16S102J R 903 RAB4CQ102J R 905 RS1/16S222J R 906 RS1/16S222J

R 907 RS1/16S222J R 908 RS1/16S393J R 909 RS1/16S681J R 910 RAB4CQ102J R 911 RS1/16S471J

R 912 RS1/16S103J R 914 RS1/16S223J R 915 RS1/16S223J R 916 RS1/16S223J R 917 RAB4CQ0R0J

R 919 RAB4CQ0R0J R 921 RAB4CQ0R0J R 923 RS1/8S331J R 924 RS1/8S331J R 926 RS1/8S331J

R 927 RS1/8S331J R 928 RS1/16S103J R 929 RS1/8S151J R 931 RS1/8S200J R 932 RS1/8S200J

R 933 RS1/8S200J R 934 RS1/8S200J R 935 RS1/8S200J R 936 RS1/8S200J R 942 RS1/16S103J

R 943 RS1/8S151J R 944 RS1/10S100J R 945 RS1/10S100J R 946 RS1/10S180J R 947 RS1/10S100J

R 948 RS1/10S100J R 949 RS1/10S100J R 950 RS1/10S100J R 951 RS1/10S180J R 953 RS1/10S151J

R 954 RS1/10S151J R 955 RS1/10S151J R 956 RS1/10S151J R 957 RS1/16S332J R 958 RS1/16S103J

R 959 RS1/10S151J R 960 RS1/10S151J R 961 RS1/10S151J R 962 RS1/10S151J R 963 RS1/16S332J

R 964 RS1/16S103J R 965 RS1/10S100J R 967 RS1/10S100J R 968 RS1/10S100J R 970 RS1/10S120J

R 971 RS1/8S151J R 972 RS1/8S151J R 973 RS1/10S100J R 975 RS1/10S120J R 976 RS1/10S100J

R 978 RS1/10S100J R 982 RS1/8S180J R 983 RS1/8S150J R 984 RS1/8S180J R 985 RS1/8S150J

R 988 RS1/8S180J R 989 RS1/8S150J R 994 RS1/8S150J R 995 RS1/8S180J R 998 RS1/16S472J

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R 999 RS1/16S103J

CAPACITORS

C 906 CKSRYB474K10 C 907 CKSRYB104K25 C 908 CKSRYB104K25 C 909 CKSRYB104K25 C 910 CCSRCH102J50

C 911 CCSRCH101J50 C 913 CCSRCH101J50 C 915 CKSRYB103K50 C 918 CKSRYB104K25 C 919 CKSRYB104K25

C 920 CKSRYB104K25 C 921 CKSRYB104K25 C 922 CCSRCH101J50 C 923 CCSRCH101J50 C 924 CCSRCH101J50

C 925 CCSRCH101J50

Unit Number : CWX2649 Unit Name : Control Unit(G2T)

MISCELLANEOUS

IC 201 IC UPD63711GC IC 301 IC BD7962FM IC 302 IC

S-818A33AUC-BGN

IC 303 IC BA05SFP IC 501 IC SM5903BFP

IC 504 IC TC74VHCT08AFT IC 505 IC TC74VHC541FT IC 507 IC

MSM51V17400F6TFT

IC 702 IC PD5748E Q 101 Transistor 2SB1132

Q 601 Transistor DTC114EK Q 602 Transistor DTA123JK Q 603 Transistor DTC314TK Q 604 Transistor DTC314TK Q 702 Transistor UMD3N

D 101 Diode 1SS355 D 301 Diode S1G-6904G2P D 303 Diode S1G-6904G2P D 601 Chip Diode MA151WA L 201 Inductor CTF1306

L 601 Inductor CTF1295 TH 701 Thermistor CCX1061 X 201 Radiator 16.93MHz CSS1581 X 701 Radiator 10.00MHz CSS1428

RESISTORS

R 101 RS1/8S120J R 102 RS1/8S100J R 103 RS1/16S222J R 104 RS1/16S102J R 105 RS1/16S0R0J

R 201 RS1/16S104J R 202 RAB4CQ681J R 203 RS1/16S0R0J R 204 RS1/16S0R0J R 205 RS1/16S103J

R 206 RS1/16S393J R 207 RS1/16S0R0J R 209 RS1/16S0R0J R 210 RS1/16S0R0J R 211 RS1/16S0R0J

R 212 RS1/16S562J R 213 RS1/16S153J R 214 RS1/16S123J R 216 RS1/16S0R0J R 217 RS1/16S0R0J

R 220 RS1/16S471J R 221 RS1/16S681J R 298 RS1/16S0R0J R 301 RS1/16S103J R 302 RS1/16S153J

R 303 RS1/16S103J R 304 RS1/16S103J R 305 RS1/16S272J R 306 RS1/16S272J R 307 RS1/16S182J

R 308 RS1/16S272J R 309 RS1/16S682J R 310 RS1/16S822J R 311 RS1/16S103J R 312 RS1/16S681J

R 313 RS1/16S103J R 314 RS1/16S153J R 315 RS1/16S153J R 316 RS1/16S153J R 317 RS1/16S103J

R 318 RS1/16S103J R 319 RS1/16S102J R 320 RS1/16S392J R 322 RS1/16S103J R 323 RS1/16S103J

R 324 RS1/16S103J R 325 RS1/16S103J R 501 RS1/16S0R0J R 504 RS1/16S331J R 508 RS1/16S682J

R 511 RS1/16S0R0J R 512 RS1/16S333J R 513 RS1/16S473J R 516 RS1/16S331J R 601 RS1/16S102J

R 602 RS1/16S102J R 603 RS1/16S223J R 604 RS1/16S223J R 605 RS1/16S102J R 606 RS1/16S681J

R 607 RS1/16S681J R 608 RS1/16S102J R 609 RAB4CQ681J R 701 RAB4CQ104J R 702 RS1/16S222J

R 703 RS1/16S681J R 704 RAB4CQ222J R 705 RAB4CQ681J R 706 RS1/16S473J R 707 RS1/16S473J

R 708 RS1/16S222J R 709 RS1/16S222J R 711 RAB4CQ104J R 712 RS1/16S473J R 713 RS1/16S681J

R 714 RS1/16S473J R 715 RAB4CQ222J R 716 RS1/16S103J R 718 RS1/16S473J R 719 RS1/16S104J

R 720 RS1/16S103J R 724 RS1/16S104J R 727 RS1/16S0R0J R 734 RS1/16S104J R 736 RS1/16S681J

R 739 RS1/16S473J R 741 RS1/16S104J R 742 RS1/16S222J R 743 RS1/16S681J R 758 RS1/16S1502D

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R 759 RS1/16S103J R 760 RS1/16S433J R 767 RS1/16S154J R 775 RAB4CQ681J

CAPACITORS

C 101 CKSRYB103K25 C 102 CKSRYB104K25 C 103 CEVL101M10 C 104 CEVL470M6R3 C 105 CKSRYB224K16

C 106 CKSRYB224K16 C 107 CKSRYB224K16 C 201 CKSRYB104K25 C 202 CEVL220M16 C 203 CKSRYB473K25

C 204 CKSRYB182K50 C 205 CKSRYB104K25 C 206 CKSRYB152K50 C 207 CKSRYB224K16 C 208 CCSRCH180J50

C 209 CCSRCK2R0C50 C 210 CCSRCH181J50 C 211 CCSRCH510J50 C 212 CKSRYB682K50 C 213 CKSRYB104K25

C 214 CKSRYB104K25 C 215 CKSRYB103K25 C 216 CKSRYB104K25 C 217 CKSRYB104K25 C 218 CKSRYB104K25

C 219 CKSRYB104K25 C 220 CKSRYB104K25 C 221 CEVL470M6R3 C 222 CKSRYB104K25 C 223 CKSRYB102K50

C 224 CKSRYB104K25 C 225 CKSRYB103K25 C 226 CCSRCH220J50 C 301 CEVL101M10 C 302 CKSRYB224K16

C 303 CKSRYB224K16 C 304 10µF/10V CCH1349 C 305 CKSRYB224K16 C 306 10µF/10V CCH1349 C 307 CKSRYB224K16

C 309 CKSYB475K16 C 501 CKSRYB102K50 C 502 CKSRYB104K25 C 503 CKSRYB104K25 C 505 CKSRYB104K25

C 506 CKSRYB104K25 C 508 CKSRYB104K25 C 509 CKSRYB104K25 C 601 CEVL220M6R3 C 602 CEVL220M6R3

C 701 CKSRYB104K25 C 702 CKSRYB104K25 C 703 CKSRYB103K25 C 704 CKSRYB103K25 C 705 CKSRYB104K25

C 706 CKSRYB104K25 C 707 CKSRYB103K25 C 708 CKSRYB473K25

Unit Number : Unit Name : PCB Unit(Load)

Q 21 Photo-transistor CPT231SCTU Q 22 Photo-transistor CPT231SCTU L 21 Inductor LCYBR15J1608 L 22 Inductor LCYBR15J1608 S 21 Spring Switch(LOAD1) CSN1051

S 22 Spring Switch(LOAD2) CSN1052

Unit Number : CWX2614 Unit Name : PCB Unit(LED)

D 31 Chip LED CL205IRXTU D 32 Chip LED CL205IRXTU S 31 Spring Switch(CAMLOAD) CSN1052 S 32 Spring Switch(CAMEOK) CSN1052 R 31 RS1/16S0R0J

Unit Number : CWX2611 Unit Name : PCB Unit

L 1 Inductor CTF1389 S 41 Spring Switch(LOAD3) CSN1051

Unit Number : CWX2613 Unit Name : PCB Unit(Side)

MISCELLANEOUS

S 11 Spring Switch(CAMCLMP) CSN1052 VR 11 Semi-fixed 1kΩ(B) CCP1338

RESISTORS

R 11 RS1/16S562J R 12 RS1/16S562J R 13 RS1/10S391J R 14 RS1/10S391J R 15 RS1/16S0R0J

R 16 RS1/16S0R0J

CAPACITORS

C 12 CKSRYB104K25

Unit Number : Unit Name : PCB Unit(M2 Unit)

MISCELLANEOUS

IC 1 IC BA6849FS S 1 Switch(HOME) CSN1057 S 2 Switch(CLAMP) CSN1057

RESISTORS

R 1 RS1/16S221J R 2 RS1/16S221J R 3 RS1/16S4R7J R 4 RS1/16S1R0J

CAPACITORS

C 1 CKSRYB104K16

Unit Number : EWM1043 Unit Name : Deck Unit

MISCELLANEOUS

IC 251 IC HA12216F IC 351 IC PA2020A Q 271 Transistor 2SC4116 D 352 Diode 1SS355 VR 301 Semi-fixed 33kΩ(B) CCP1280

VR 302 Semi-fixed 33kΩ(B) CCP1280

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RESISTORS

R 255 RS1/16S181J R 256 RS1/16S181J R 257 RS1/16S183J R 258 RS1/16S183J R 259 RS1/16S133J

R 260 RS1/16S133J R 261 RS1/16S274J R 262 RS1/16S274J R 271 RS1/16S183J R 272 RS1/8S0R0J

R 273 RS1/8S0R0J R 275 RS1/16S473J R 276 RS1/16S104J R 277 RS1/16S224J R 278 RS1/16S104J

R 281 RS1/8S0R0J R 282 RS1/8S0R0J R 283 RS1/8S0R0J R 284 RS1/8S0R0J R 285 RS1/8S0R0J

R 286 RS1/8S0R0J R 287 RS1/8S0R0J R 288 RS1/8S0R0J R 292 RS1/8S0R0J R 296 RS1/16S0R0J

R 321 RS1/8S0R0J R 351 RS1/16S102J R 352 RS1/16S102J R 353 RS1/16S102J R 354 RS1/16S102J

R 355 RS1/16S274J R 362 RS1/8S301J R 373 RS1/16S0R0J R 374 RS1/8S0R0J R 375 RS1/16S0R0J

R 401 RS1/16S153J R 402 RS1/16S332J R 403 RS1/16S911J R 404 RS1/16S274J

CAPACITORS

C 251 CKSRYB391K50 C 252 CKSRYB391K50 C 253 CKSRYB391K50 C 254 CKSRYB391K50 C 255 CKSRYB103K50

C 256 CKSRYB103K50 C 271 CEH1R0M50 C 272 CKSRYB104K16 C 301 CKSRYB104K16 C 302 CKSRYB104K16

C 309 CKSRYB104K16 C 310 CKSRYB104K16 C 351 CKSQYB224K25 C 352 CKSRYB392K50 C 353 CKSRYB103K50

C 354 CKSRYB103K50 C 355 CKSQYB104K50 C 356 CKSRYB103K50 C 401 CKSRYB392K50 C 402 CKSRYB334K10

C 403 CKSRYB223K25 C 404 CKSRYB103K50 C 405 CKSRYB333K16

Unit Number : EWM1041 Unit Name : Sensor Unit

MISCELLANEOUS

L 101 Inductor CTF1546 L 102 Inductor CTF1546 S 101 Switch(LOAD) ESG1007 S 102 Switch(MODE) ESG1007 S 103 Switch(70µS) ESG1007

Q 101 Photo-reflector EGN1004

Miscellaneous Parts List

M 1 Motor Unit(MAIN) EXA1618 M 2 Motor Unit(SUB) EXA1623 HD 1 Head Assy EXA1594 M 1 Motor Unit(-A)(CAMGEAR) CXC1144 M 2 Motor Unit(-B)(ELEVATION) CXC1145

M 3 Motor Unit(-A)(CRG) CXC1143 VR 1 Variable Resistor 10kΩ CCW1023

PU Unit(Service)(PX1) CXX1569

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6. ADJUSTMENT

6.1 CONNECTION DIAGRAM

GGD1239

GGD1318

Bullet connector (To DC Regulated Power Supply)

Bullet connector SP Line

Bullet connector (To DC Regulated Power Supply)

Bullet connector

(To DC Regulated Power Supply)

FX-MG8237ZT/EW FX-MG8337ZT/EW

GM-8337ZT/E

H/U

EMV

12P

20P

6P

10P

14P

8P

10P

18P

32P

18P

10P

6P

10P

14P

12P

20P

24P

8P

20P

24P

GGD1317

AUI+AUI-

FR+FR-

AMP

NAVI ECU

- EMV/NAVI SYSTEM(AMP:P AND M/L)

M/L AMP SYSTEM cannot use GGD1317. Because, external connector is different from pioneer AMP and M/L AMP(PIO:24P-20P,M/L:25P-16P). Moreover, GGD1240 which is a previous jig cannot be used (Because the signal array is different). Therefore, when the head unit of the M/L AMP system is repaired, pioneer AMP system is used.

* P and Pio : Pioneer * M/L : Mark Levinson

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5

6

7

8

FX-MG8237ZT/EW

- STANDARD SYSTEM(AMP:P AND M/L)

GM-8337ZT/E

GGD1317

Bullet connector (To DC Regulated Power Supply)

Bullet connector SP Line

H/U

20P

12P

20P

24P

20P

24P

AMP

FX-MG8237ZT/EW FX-MG8337ZT/EW

M/L AMP SYSTEM cannot use GGD1317. Because, external connector is different from pioneer AMP and M/L AMP(PIO:24P-20P,M/L:25P-16P). Moreover, GGD1240 which is a previous jig cannot be used (Because the signal array is different). Therefore, when the head unit of the M/L AMP system is repaired, pioneer AMP system is used.

* P and Pio : Pioneer * M/L : Mark Levinson

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IC601

MAIN UNIT

DC Regulated Power Supply

BACK UP

ACC

GND

+13.2V

GND

FM/AM TUNER UNIT

DECK UNIT

Extention Cord GGD1121

VR561

VR302

mV Meter(1)

VR301

L-CH

R-CH

Pin2

Pin3

CN251

DECK UNIT

- Connection Diagram

DOLBY B NR ADJUSTMENT

No. Test Tape Adjustment Point Adjustment Method

(Switch Position)

1 NCT-150 VR301(Lch),VR302(Rch) mV Meter(1) : –8.24dBm(300mV)±1dB

(400Hz,200nwb/m) (DOLBY NR Switch : OFF)

1

234

12

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FX-MG8237ZT/EW

6.2 AUDIO, TUNER ADJUSTMENT

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Connection:

Setting of the pulse generator (setting of superimposed pulse)

Adjustment:

1. Setting of SSG Receiving frequency : 999 kHz Percentage modulation : 30% Modulation frequency : 400 Hz Antenna input : 74 dBuV (EMF)

2. Tune a RADIO to the "999kHz" with 1' condition.

3. Mix signal with the above-mentioned pulse and SSG moduration OFF.

4. Variable resistance adjust noise level to a minimam. Adjustment point : VR561

Pulse generator (equivalent to HP8011A)

SSG

2-signal pad AM dummy

KEX-M8406ZT

Output

Noise meter

Pulse width :50usec

Pulse intervals :5msec

Pulse voltage :4Vp-

p

4Vp-p(EMF)

50us

5ms

AM NOISE CANCELER ADJUSTMENT

FX-MG8237ZT/EW FX-MG8337ZT/EW

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6.3 TEST MODE

[1] + [6] + [DISC]: 3 times

DIAG IN

P190

[DISC] + [UP]

PBUS Test Mode In

PBUS TEST

[DISC]: for 1.7 seconds

DIAG End

Normal display

[DISC] CD On

CD *

(*: Disc number)

To the CD Test Mode

Key to be pressed

Operation

Display

[3] + [TA]

External CD-CH

Test Mode In

(*1)

[3] + [AF]

External CD-CH

Error number displayed

CD ERRXX

[4] + [DOWN]

Internal CD-CH

Error number displayed

CD ERRXX

Notes: *1) Depending on the state of DIAG

*2) Note that the test mode is cancelled in the system microcomputer by switching the ACC OFF and ON, but that it is not in the CD microcomputer. Use the reset function for complete cancellation of the test mode.

Rest the Microcomputer to

return to the normal mode.(*2)

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1) Precautions on Adjustment

• The unit employs a single voltage (+5V) for the regulator, thus the reference potential of the signal is REFO (approximately 2.5V) rather than GND. Inadvertent contact of REFO and GND during adjustment can result not only in disabling normal potential measurement but also in exposing the pickup to strong impacts due to malfunctioning of the servo. Therefore, you are requested to observe the following precautions.

• Make sure that the negative probe of the measuring instrument is not connected to REFO or GND. Special care must be exercised so that the channel 1 negative probe may not be connected to the oscilloscope and the channel 2 negative probe to GND. Since the frame of the measuring instrument is usually at the same potential as the negative probe, the frame of the measuring instrument must be changed to floating status. When REFO is inadvertently connected to GND, you must immediately turn off the regulator or power supply.

• The regulator must be turned off before mounting or dismounting filters or wiring materials.

• You should not start adjustment or measurement immediately after the regulator is turned on. It is recommended to run the player for approximately one minute so that it may stabilize.

• When the test mode is turned on, various protective functions from the software become unavailable. Thus, you must make sure that undesirable electric or mechanical shocks are not be given to the system.

• This model employs a photo-transistor for detecting discs at their loading or ejection. Thus, if its outer case is removed during repair work and internal parts are exposed to light of strong intensity, malfunctions including the following can result:

∗ The eject button becomes inoperable during play.

Pressing the eject button does not eject a disc and play is continued.

∗ Loading becomes unavailable.

If a malfunction is recognized, appropriate remedial actions must be taken. Such actions include changing the light source position, changing the unit position and applying a cover to the photo-transistor.

• When you press the EJECT key to eject a disc, you must not touch any other key until the ejection is complete.

• If you press the UP or DOWN for the focus search in the test mode, you must turn the power off immediately. (Otherwise, the lens will be forced to stick to the top or bottom, potentially resulting in the burning of the actuator.)

2) Description of the Test Mode

• Turning on the Test Mode See page 70.

• Ending the Test Mode Apply the reset (the reset will be applied two minutes after the power is turned from off).

• Operation of TR JUMPs (except 100TR) continues after your finger has left the key. CRG, MOVE and 100TR JUMP are forced to the tracking close mode as soon as the key is released.

• Turning the power on or off resets the JUMP MODE to the Single TR.

6.4 CD ADJUSTMENT

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- Flow Chart

Power Off

TRK

[TXT]

Power Off

MIN

TRK

[Key]

Contents

Display

Power ON (T.OFFSET adjustment required)

TRK

00

[TXT]

SEC

MIN

Tracking Close (AGC, Applicable Servo)

TRK

SEC

[1]+[6]+[DISC]3times

Diag Mode In

[DISC]+[SEEK UP]

Test Mode In

[DISC] 3sec Diag off

[DISC]

Source CD

SEC

MIN

TRK

[TXT]

SEC

MIN

00 00

[5]

Focus Close/S-curve/ F, F0 Measurement

SEC

MIN

TRK

91 91

91

[1]

SEC

MIN

xx xx

xx

MIN

99

SEC

0x 0x

SEC

[5]

SEC

99 99

*2

TRK or

TRK

Power ON (T.OFFSET adjustment not required)

TRK

[SEEK DOWN]

Focus Mode Select

MIN

TRK

0x

[SEEK DOWN]

Tracking Close (No AGC, Applicable Servo)

MIN

TRK

xx xx

xx

RF AMP Gain Select

TRK

[1]

Tracking Servo Close

SEC

MIN

00 00

00

SEC

MIN

99 99

99

Rough Servo and RF AGC/ RF AGC Factor Display

[5]

SEC

MIN

TRK

?? ??

??

[2]

*1

SEC

MIN

00 00

00

[TA]

CRG+

TRK or

TRK

SEC

MIN

00 00

00

SEC

MIN

99 99

99

TRK or

TRK

[TA]

CRG+

*9

MIN

TRK

8x 8x

8x

or

MIN

TRK

9x 9x

9x

[1]

Mechanism Test Mode Initial State

MIN

TRK

00 00

72

[AF]

CRG-

SEC

MIN

00 00

00

SEC

MIN

99 99

99

CRG-

SEC

TRK

8x

or

SEC

TRK

9x

SEC

MIN

[AF]

8x 8x 9x 9x

SEC

[SEEK DOWN]

New Test Mode

SEC

MIN

TRK

??

[2]

SEC

MIN

?? ??

Tracking Balance Adjustment

TRK

8x

[2]

MIN

8x 8x

Auto Adjustment Display Select

*3

SEC

[TXT]

Power Off

SEC

MIN

TRK

[TXT]

Power Off

SEC

MIN

SEC

MIN

SEC

MIN

00

SEC

MIN

99

Single TR 9X(8X):91(81)

TRK

→→

TRK

06

S.Curve Check

→→

TRK

00

)

99

→→→F.Offset Display

RF Offset Display T.Bal Display

( F.Cancel value = (Upper 8 bits of the setting (7F[H] to 80[H] + 128)/4 = 63[D] to 32[D] to 00[D]).

→→ → → →

4 TR

92(82)

*1)

TRK

*2)

TRK

(TRK

*3)

*4) Single TR /4TR / 10TR / 32TR / 100TR *5)

*6) Only for the CRG Move and 100TR modes

Track No. / Min / Sec

*7)

(F.T. AGC Gain = (Current value/Initial value) x 20)

→→→

F.AGC Gain T.AGC Gain

*8) CRG motor voltage : 2 [ V ] *9)

The first press displays the RF AGC coefficient. The second one or after performs the rough servo and RF AGC adjustments, and then displays the RF AGC coefficient.

In all TR Jump modes except for 100TR, track jump operation continues even after the key is released.

•

In the CRG Move and 100TR Jump modes, the tracking servo loop closes at the same time when the key is released. When the power is turned off and on, the jump mode, the RF AMP gain

•

setting, and the auto adjustment values are reset to the Single TR (91),0dB, and the factory setting respectively.

Note: When you pressed the

(otherwise, the lens can stick resulting in actuator damages).

F,T,RF AGC Display Switching

TRK

-6dB

SEC

MIN

06

SEC

MIN

01

10 TR

93(83)

[1]

*7

SEC

MIN

?? ??

??

-12dBTYP

SEC

MIN

TRK

12

06

LD OffFocus Close

MIN

TRK

02

32 TR

94(84)

02

100 TR

95(85)

01

[5] [SEEK DOWN]

F,T AGC and RF AGC

SEC

MIN

TRK

xx xx

xx

02

Rough Servo.

CRG Move

96(86)

RF AGC Gain

CRG/TR Jump Count

*5

Select

SEC

MIN

TRK

xx xx

xx

[Key]

[TXT]

[TA]

[AF]

[1]

[2]

[5]

[SEEK DOWN]

[LOAD]

[EJECT]

[4] (DISC UP)

[3] (DISC DOWN)

CRG+/TR Jump+

TRK

xx

Power ON/OFF

CRG+/TR Jump+ (Toward outer perimeter)

CRG-/TR Jump(Toward inner perimeter)

Tracking close and AGC and Applicable servo / AGC , AGC display switching

RF gain select / Offset adjustment display/ Tracking balance adjustment / Tracking open

Focus Close, S.Curve / Rough Servo/ RF AGC / F,T, RF AGC

Focus mode select / Tracking close / CRG.TR jump select

DISC load

DISC eject

DISC UP

DISC DOWN

[TA] or [AF] key during the Focus Search, you must turn the power off immediately

[TA]

MIN

SEC

xx xx

*4

CRG–/TR Jump–

TRK

TRK or

TRK

Test Mode

[AF]

MIN

xx xx

xx

[2]

Trackig Open

MIN

8x 8x

8x

MIN

9x 9x

9x

*4

SEC

*6

SEC

Operation

[2]

Trackig Open

MIN

TRK

8x 8x

8x

or

MIN

TRK

9x 9x

9x

SEC

New Test Mode Error occurrence time/ Cause display switching

DISC load

DISC eject DISC UP

DISC DOWN

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• Note :

The grating angle of the PU unit cannot be adjusted after the PU unit is changed. The PU unit in the CD mecha-

nism module is adjusted on the production line to match the CD mechanism module and is thus the best adjusted PU unit for the CD mechanism module. Changing the PU unit is thus best considered as a last resort. However, if the PU unit must be changed, the grating should be checked using the procedure below.

• Purpose :

To check that the grating is within an acceptable range when the PU unit is changed.

• Symptoms of Mal-adjustment :

If the grating is off by a large amount symptoms such as being unable to close tracking, being unable to perform

track search operations, or taking a long time for track searching.

• Method :

• Measuring Equipment • Oscilloscope, Two L.P.F.

• Measuring Points • E, F, REFO

• Disc • ABEX TCD-784

• Mode • TEST MODE

• Checking Procedure

1. In test mode, load the disc and switch the 5V regulator on.

2. Using the TA and AF buttons, move the PU unit to the innermost track.

3. Press key 5 to close focus, the display should read "91". Press key 2 to implement the tracking balance adjust

-

ment the display should now read "81". Press key 5 4 times. The display will change, returning to "81" on the fourth press.

4. As shown in the diagram above, monitor the LPF outputs using the oscilloscope and check that the phase differ

-

ence is within 75° . Refer to the photographs supplied to determine the phase angle.

5. If the phase difference is determined to be greater than 75° try changing the PU unit to see if there is any improvement. If, after trying this a number of times, the grating angle does not become less than 75° then the mechanism should be judged to be at fault.

• Note

Because of eccentricity in the disc and a slight misalignment of the clamping center the grating waveform may be

seen to "wobble" ( the phase difference changes as the disc rotates). The angle specified above indicates the aver

-

age angle.

• Hint

Reloading the disc changes the clamp position and may decrease the "wobble".

100kΩ

390pF

100kΩ

390pF

E

REFO

F

Xch Ych

Oscilloscope

L.P.F.

REFO

CONTROL UNIT(G2T)

REFO

E

F

5

6

7

8

F

E

D

C

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A

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FX-MG8237ZT/EW

6.5 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT

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Grating waveform

Ech → Xch 20mV/div, AC Fch → Ych 20mV/div, AC

45°

0°

75°

60°

30°

90°

1

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B

A

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6.6 TEST MODE(CD)

Manual test Select the motor you desire to move by using one of the following four keys: [1], [2], [5], and [6]. After selecting the motor, use the [TA] or [AF] key tomove the selected motor. While the key is being pressed, the motor will keep moving.

1. To select the CAM motor, press the key [1]. For the CAM PLAY direction, use the key [TA]. For the CAM ELV direction, use the key [AF].

2. To select the ELV motor, press the key [2]. For the ELV UP direction, use the key [TA]. For the ELV DOWN direction, use the key [AF].

3. To select the LOAD motor, press the key [5]. (Default) For loading, use the key [TA]. For ejection, use the key [AF].

4. To select the SPDL claws, press the key [6]. Caution: SPDL claw test should be performed in the servo test mode. The SPDL claws are controlled by the servo systems and the switches conditions cannot be checked in the mechanical test mode.

To open the claws, use the key [TA].

To close the claws, use the key [AF].

Durability test To enter the durability test modes, press the key [SEEK UP]. To exit from the test modes, press one of the keys [1], [2], [5], and [6].

1. LOAD durability test (Load <-> Eject) At the door open position (disc insertion/eject position), insert a disc and press the key [SEEK UP].

2. CAM durability test (Play <-> ELVOK) At any position between CAM4P and CAM5P (display: 06, 04), press the key [SEEK UP].

3. LIFT durability test (Current disc <-> Door Open) At any position between CAM2P and CAM3P (display: 05, 07), press the key [SEEK UP].

4. ELV durability test (ELV1F <-> 6F) At the CAM1P position (display: 01), press the key [SEEK UP]. .

[Key]

Operation

Display

[1]

CAM MOTOR

Selection

MIN

TRK

01 **

72

SEC

[1] + [6] + [DSIC]: 3 times

DIAG Mode In

[SEEK UP] + [DISC]

Test Mode In

PBUS TEST

[DISC]: for 3 seconds

DIAG Off

[CD] or [DISC]

Source CD

SEC

MIN

TRK

**** **

[1]

Mech Test In

Initial state

SEC

MIN

TRK

** **

72

[5]

LOAD MOTOR

Selection

SEC

MIN

TRK

00

72

bit2:CamEokSW OFF

bit1:CamloadSW

bit0:CamclampSW

Display

Mech test mote

Display

Mech test mote

Display

Mech test mote

[2]

ELV MOTOR

TRK

72

Display

Mech test mote

Selection

SEC

MIN

02 ****

Track Minute

72 01

CAM1P

(01H)

DISC CLAMP

SELECTION

TRK

72

CAM motor selected

E L

V

CAM1P

(01H)

ON

OFF

ON

OFF

ON

The states of the CAM switches

Track Minute Second

72 02

ELV motor selected

Track Minute Second

72 00

Track Minute Second

* *

Eudpzt (ELV position x2)

* *

LOAD motor selected

72 03 00

SPDL claws selected

0 fixed

[6]

SEC

MIN

03 **

TRK

Second

* *

L

C

I

L

F

M

T

P

CAM1P

(01H)

[SEEK UP]

SELECTION

RESET

MIN

** **

72

P

L A Y

(01H)

bit12:loadpht

bit11:loadsidesw

bit10:loadoksw

Display

[TXT]

CAM1P

(01H)

Mech Test In

MIN

TRK

**

SEC

[SEEK UP]

OFF

ON

OFF

ON

OFF

ON

The states of the loading switches

Track Minute Second

* *

Mech test mode (72)

An error occurs.

Error mode display

SEC

** **

Key

[TXT]

[TA]

[AF]

To the mech test initial state

Moves the motor selected by one of the keys B3H to B6H, in the FWD direction. The motor keeps moving while the key is pressed.

Moves the motor selected by one of the keys B3H to B6H, in the REV direction. The motor keeps moving while the key is pressed.

Selects the CAM motor.

[1]

[2]

Selects the ELV motor.

Selects the LOAD motor.

[5]

Selects the DISC CLAMP.

[6]

Selection reset.

Halfemp fill

* * * *

The number of loops (Max. 999)

Operation

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Mode

Electrical error

Servo error

1,2 1,2 3,4 1,2 1,2 1,2 1,2 1,2 1,2 1,2

3 4

A0 A1

10 11 12 14 17 19 30

VD power NG Mech Vref NG

Carriage home NG Focus search NG Spindle Lock NG Subcode Mirror NG Setup NG Tracking Balance NG Search time-out

VD power abnormal Mech elevation reference voltage abnormal At the occurrence of error, motor control output (*6) The CRG cannot move to inner tracks or move from inner tracks. No focus No spindle lock. Sub codes cannot be read. Not applicable to the G2 mech. AGC protection does not function. Focus is easily unlocked. Not applicable Cannot reach the target address. At the occurrence of error, claw switch value The rotation rate does not satisfy the spec.

ERROR 4 ERROR 4

ERROR 3 ERROR 1 ERROR 1

ERROR 1

Digit Code

Name

Descriptions

AVC-LAN

error code

Mode

Waiting for disc pulled out

CAM Err

CAMRST Err

1,2 1,2 1,2 1,2 1,2 1,2 1,2

3

4 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2

3

4 1,2 1,2 1,2 1,2

20 21 22 23 24 25 26

51 52 5a 5b 5e 61 62 64 66 6a 6b 71 72 7a 7b 7d

7f 81 82 8a 8b aa

91 92 93 94

MFWDTO MREVTO MFWDTO MREVTO MFWD2TO MFWDTO MREVTO MLSWNG MREV2TO MFWDTO MREVTO MFWDTO MREVTO MFWDTO MREVTO MLSWNG MREV2TO MFWDTO MREVTO MFWDTO MREVTO MOVERCNT

MFWDTO MREVTO MOVERCNT MSPDERR

CAMRST Forced ejection Waiting for disc pulled out WTLOAD Forced ejection Waiting for disc pulled out EJCTON Forced ejection Waiting for disc pulled out SEJPCK Forced ejection Waiting for disc pulled out HLFLOAD Forced ejection Waiting for disc pulled out DINSRDY Forced ejection Waiting for disc pulled out LIFTDN LIFTUP Forced ejection Waiting for disc pulled out The m2stat value at the original error followed by forced ejection (*3) The LOAD SW value (3 bits) at the forced ejection end: CAM motor FWD time-out error during TRAY UP operation CAM motor REV time-out error during TRAY UP operation CAM motor FWD time-out error during TRAY DN operation CAM motor REV time-out error during TRAY DN operation CAM motor FWD2 time-out error during TRAY DN operation CAM motor FWD time-out error during CRG OUT operation CAM motor REV time-out error during CRG OUT operation LOAD SW ON stuck error during CRG OUT operation CAM motor REV2 time-out error during CRG OUT operation CAM motor FWD time-out error during CRG IN operation CAM motor REV time-out error during CRG IN operation CAM motor FWD time-out error during ELV IN operation CAM motor REV time-out error during ELV IN operation CAM motor FWD time-out error during ELV OUT operation CAM motor REV time-out error during ELV OUT operation LOAD SW ON stuck error during ELV OUT operation CAM motor REV2 time-out error during ELV OUT operation CAM motor FWD time-out error during EIN_EXP operation CAM motor REV time-out error during EIN_EXP operation CAM motor FWD time-out error during CIN_EXP operation CAM motor REV time-out error during CIN_EXP operation CAM SW has not been determined during CAM operation (Chatter remains.) The OK stop position at the last elevation operation (*4) The CAM SW value (3 bits) before retry (with the first error) ELV motor FWD time-out error during CAMRST operation ELV motor REV time-out error during CAMRST operation Over-count error during CAMRST operation The claws do not close during CAMRST operation.

ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3

ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3

ERROR 3 ERROR 3 ERROR 3 ERROR 3

Digit Code

Name

Descriptions

AVC-LAN

error code

- Electrical and servo errors

- Mechanical errors

1

234

12

34

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E

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C

B

A

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Mode

1,2

3

4 1,2 1,2 1,2 1,2

3

4 1,2 1,2 1,2 1,2

3

4 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2

3

4 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2 1,2

3

4 1,2 1,2 1,2 1,2

3

4

96

9a 9b 9c 9d

b1 b2 b3 b6

c1 c2 c3 c6 d1 d2 d3 d4 d6 d7

90 eb ed fb e0 e2 e6 f0 f1 f2 f3 f4 f5 f6 f7 ab

40 41 42 43

MREV2TO

MSPDERR MSPDERR MSPDERR MSPDERR

MFWDTO MREVTO MOVERCNT MREV2TO

MFWDTO MREVTO MODERCNT MREV2TO MFWDTO MREVTO MOVERCNT MLSWNG MREV2TO MLSW2NG

BACKUP_NG MLSWNG MLSWNG MLSWNG BACKUP_NG MREVTO MREV2TO BACKUP_NG MFWDTO MREVTO MCHTERR MLSWNG MFWD2TO MREV2TO MLSW2NG MOVERCNT

New test mode New test mode New test mode New test mode

Overrun error during CAMRST operation The CAM SW value (3 bits) before operation The ELV stop position before operation (*5) The claws do not close during DSKFREE operation. The claws do not open during DSKLOCK operation. The claws do not close during CLWCLSE operation. The claws do not open during CLWOPEN operation. The CAM SW value (3 bits) with the claw error The CLAW SW values before and after the error stop (2 bits each) ELV motor FWD time-out error during DISCSEL operation ELV motor REV time-out error during DISCSEL operation Over-count error during DISCSEL operation Overrun error during DISCSEL DISC operation The target disc No. The ELV error stop position before retry (*5) ELV motor FWD time-out error during LIFT UP operation ELV motor REV time-out error during LIFT UP operation Over-count error during LIFT UP operation Overrun error during LIFT UP operation ELV motor FWD time-out error during LIFT DN operation ELV motor REV time-out error during LIFT DN operation Over-count error during LIFT DN operation DISC IN (SIDE SW ON) is sensed during door close operation. Overrun error during LIFT DN operation "Pinched disc" is sensed during LIFT DN operation (within the range of +/-1LSB, 200ms continued) Current disc No. The ELV error stop position before retry (*5) CAMRST Forced ejection Door open/close error LOAD SW error during HLFLOAD operation LOAD SW error during SEJPCK operation LOAD SW error during DINSRDY operation Backup NG during EJCTON operation MREVTO error during EJCTON operation MREV2TO error during EJCTON operation Backup NG during WTLOAD operation MFWDTO time-out error during WTLOAD operation SIDE SW ON with OK SW ON waiting retry during WTLOAD operation Incomplete insertion error during WTLOAD operation OK SW ON but PHOTO ON during WTLOAD operation MFWD2TO time-out error during WTLOAD operation OK SW ON waiting retry (3 times) during WTLOAD operation SIDE SW ON at the OK SW ON waiting mode during WTLOAD operation The LOAD SW has not been determined during insertion/loading operation (Chatter remains.) The LOAD SW value (3 bits) at the FEJCHK end The ELV stop position at the FEJCHK end (*5) Focus NG after servo close Lock NG after servo close Sub code NG after servo close Not applicable to the G2 mechanism. The claw SW value at the occurrence of error The rotation rate does not satisfy the spec.

ERROR 3

ERROR 3 ERROR 3 ERROR 3 ERROR 3

ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3

ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3 ERROR 3

ERROR 1 ERROR 1 ERROR 1 ERROR 1

Digit Code

Name

Descriptions

AVC-LAN

error code

New test mode

Claw Err

DISCSEL Err

LIFT Err (*2)

error ERROR 3

5

6

7

8

F

E

D

C

B

A

5

6

7

8

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78

Notes: *1) Insertion/ejection error is output only when door open/close error occurs with forced eject.

*2) LIFT error is output under the following conditions: LIFTDN --> TLFTUP --> forced eject --> door open/close error

*3) The values of m2stat: B.upNg=0, FwdTo=1, RevTo=2, Chata=3, OverCnt=4, SwNg=5, SpdNg=6, Fwd2To=7, Rev2To=8, Sw2Ng=9

*4) The last results of chatter check (compared with the target center): +8LSB=1, +7LSB=2, +6LSB=3, +5LSB=4, +4LSB=5, +3LSB=6, +2LSB=7, +1/0LSB=8, -1/0LSB=8,-2LSB=9, -3LSB=a, -4LSB=b, -5LSB=c, -6LSB=d, -7LSB=e, -8LSB=f, the others=0

*5) Basically the value of eudpzt except for the following case: In case of eudpzt=1 and door close mode, eudpzt=e

*6) bit0: P_lo1, bit1: P_lo2, bit2: P_elv1, bit3: P_elv2, bit4: P_cg1, bit5: P_cg2, bit6: P_elv_vol, bit7: P_lod_vol

1

234

12

34

F

E

D

C

B

A

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-Operations and functions

(1) Key operations

for Diagnosis IN

(Note *1 )

(2) Key operations

for Diagnosis OUT

(2) Key operations

for Diagnosis OUT

(2) Key operations

for Diagnosis OUT

Normal

operation

mode

All-element lighting mode SW check mode

Service check mode

The physical addresses for all devices connected to the AVC-LAN (including this product) are

displayed. The current and past product conditions are checked by performing the system check

and collecting the diagnosis memory data. Each address check result is displayed as follows: "OK",

"Not connected", "Check", "Replace", "Old Version" or "No response".

Details display mode

This mode is available only when the service check result is "Check", "Replace" or "Old

Version". For each physical address, the following information is displayed:

- Logical address for the device where some failure occurs and the diagnosis codes

(indicating details of the failure), which were obtained through system check

- In addition to the above data, sub-code (indicating the device with failure), connecting

confirmation no. (time stamp), and frequency of occurrence, which were obtained from

diagnosis memory data

Diagnosis memory

clearance

< From the service check mode >

The diagnosis memory data

(codes) for all devices connected

are cleared.

< From the details display mode >

The diagnosis memory data for

devices selected is cleared.

After memory clearance is

completed, the mode is

automatically shifted to the

service check mode.

(6)Key operations

for Memory

clearance

(6)Key operations

for Memory

clearance

Memory clearance

automatically ends.

(3) Key operations for entering Service check mode

(4)Key operations for entering

the details display mode

(5)Key operations for returning

to the service check mode

Note *1: To enter the diagnosis IN mode,

use the buttons on the head unit.

(1) Diagnosis IN While pressing the CH1 and CH6

With three times of beep sound, the mode buttons simultaneously, press the

change operation completes. DISC button three times.

(2) Diagnosis OUT Keep the DISC button pressed for

1.7 seconds or more and turn the

ACC switch OFF.

(3) Entering the Service check mode. Press the TA button.

With a beep sound, the mode change completes.

(4) Entering the Details display mode. Press the CH2 button.

(5) Returning to the service check mode. Press the CH3 button.

(6)Clearing the Memory data Keep the CH5 button pressed for

1.7 seconds or more.

Change the display (forward) Press the TRACK UP button.

Change the display (backward) Press the TRACK DOWN button.

-Key operations

All elements on the LCD are lit. (This is for checking if the LCD is lit normally.)

Note : In this mode, when any key except for TA is pressed, a beep will be heard once.

(You can check if pressing keys are accepted normally by hearing beeps.)

5

6

7

8

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E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

6.7 AVC-LAN DIAGNOSIS MODE

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After system check completes, the check results for the

devices connected to the AVC-LAN are displayed in

turn in order of physical address number as follows:

"Physical address"

...

The smallest physical address number is displayed

first, whose check result will follow it.

Ex. P190

Physical address number

(radio cassette)

The physical address is displayed.

"Check result"

...The check result is displayed.

Ex. good Normal (OK)

ECHn Replace

CHEC Check

OLd

Old Version

"Physical address"

...

The next physical address number is displayed.

"Connecting confirmation no. (current)"

...The AVC-LAN time stamp is displayed.

Ex. no01

The connecting confirmation

number is displayed.

The current connecting confirmation

number (expressed in the hexadecimal

number system by using 00 to FF)

The number increases by one each time one minute

passes. When 256 minutes pass, the indication

returns to 00.

Service check mode

Details display

mode

Details display mode (only in case of "Replace", "Check", or "Old Version")

This mode is available only when the service check result is "Replace", "Check" or "Old Version".

To select this mode, press the CH2 key.

"Physical address (for selected devices)"

The physical address number is displayed, whose check result details will follow it.

Ex. P360

Physical address number (CD-CH)

"Diagnosis data source"

The detailed items depend on the data source.

Ex. SyS The data was obtained from

system check.

"Logical address"

The logical address number for the device

with failure is displayed.

Ex. 1L_63

Logical address number (CD-CH)

The logical address is displayed.

Serial number

"Diagnosis code"

The diagnosis code indicates what problem occurs.

Ex. 1d_45

Diagnosis code (abnormal EJECT)

The diagnosis code is displayed.

If there are two or more diagnosis codes, the diagnosis

data display will continue.

Ex. COdE

The data was obtained from diagnosis memory data.

"Logical address"...The same as that for the SyS data

"Diagnosis code"...The same as that for the SyS data

"Sub code"...This code indicates the device with failure.

Ex. 1P_190

The sub code is displayed.

"Connecting confirmation number (when some failure

occurs)"... AVC-LAN time stamp

Ex. no01

The connecting confirmation number (expressed in

the hexadecimal number system by using 00 to FF)

The connecting confirmation number is displayed.

"Frequency of occurrence"

...The frequency of failures occurred

Ex. 1c_15

The frequency of occurrence expressed in the

decimal number system.

The frequency of occurrence is displayed.

-

Diagnosis mode display

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Physical address allocation

_

2

Display

P_

1

_

2

_

3

Ex.P190

Physical address

012345678 9ABCDE

F

_

1

012345678 9ABCDE

F

_

1

2

_

1

3

_

1

4

_

1

5

_

1

6

0

2

4

6

8

C

E

1,3,5,7,

9-B,D,F

M.DISP

computer

New EMV

New device

with AV

New MM ECU

device

with AV

Audio ECU

Audio H/U Rear TV

Rear Control

SW

Multi-CD

decoder

CD-CH

commander

AMP controlled

radio tuner

New 1-DIN TV

Europe navigation

DISP.M/U

Rear TV with

movie mode

Navigation

with controls

MONET

ECU

Vehicle

Information ECU

1-DIN

Navigation

DISPLAY

with SW

Europe GW

ECU

Consolidated

inside panel

Gateway ECU

FM multiplex

DISPLAY

Steering SW

Navigation

remote controller

Fr controlled

SW

Simple LCD

Consolidated

SW

MD-CH

commander

Body

computer

0

8

1-7,

9-F

0

8

1-7,

9-F

0

1-F

0

8

C

1-7,9-8,D-F

0

1-F

Navigation

computer

ATIS

VICS TV tuner

H/W

CD-CH

H/W

DVD-CH

TEL information

ECU

Camera

controller

Radio

Cassette

Radio cassette with

no CH controller

CD-P

1DIN

CD-CH

MD-P

MD-CH

DAT

DCC

TEL

ECU

Equalizer

DSP

H/W

AMP

GPS receiver

ATIS decoder

FM multiplex

decoder

CD-CH

MD-CH

CD-ROM

-CH

MD-ROM

-CH

TEL

information

May Day

A/C computer

Body

computer

DVD deck

Radio wave

beacon

Optical beacon

DVD-P

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

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Logical

address name

Logical

address

Diagnosis

code

Diagnosis details

AM tuner PLL unlocked

FM tuner PLL unlocked

No antenna connected

Antenna power supply abnormal

Tuner power supply abnormal

AM tuner abnormal

FM tuner abnormal

SW tuner abnormal

TV tuner PLL unlocked

FRONTEND abnormal

TV divergence shifting error

TV – no reception

VNR screen error

No antenna connected

Antenna power supply abnormal

SEL +B current – small

SEL +B current – large

Belt broken

Mechanical failure or cassette broken

EJECT failure

TAPE jamming

Dirty head

Mech power supply abnormal

CD Mech abnormal

CD loading/unloading abnormal

CD lead-in abnormal

No disc loaded

Incorrect disc

Disc unreadable

CD-ROM abnormal

CD abnormal

EJECT abnormal

Scratches or non-recorded side

CD high temperature detected

Excessive current detected

Tray IN/OUT abnormal

Elevator abnormal

Clamp abnormal

MD mech abnormal

MD IN/OUT abnormal

MD lead-in abnormal

No disc loaded

Incorrect disc

Disc unreadable

MD-ROM abnormal

MD abnormal

EJECT error

Scratches or non-recorded side

MD high temperature detected

Excessive current detected

Tray IN/OUT abnormal

Elevator abnormal

Clamp abnormal

1011404142434445101140414243444546104041424344101112404142434445464748505152101112404142434445464748505152

Radio

TV tuner

Cassette

tape

CD

CD-P

CD-CH

MD

MD-CH

60H

40H

61H

43H

62H

63H

64H

65H

Logical

address name

Logical

address

Diagnosis

code

Diagnosis details

No diagnosis

Abnormal reset

Abnormal +B

Abnormal ACC

Abnormal MUTE

Fuse broken

Microcomputer - abnormal

ROM - abnormal

RAM - abnormal

Bus - abnormal

F-ROM - abnormal

V-RAM - abnormal

Gate allay abnormal

Paint controller abnormal

Backup memory abnormal

Voice output controller abnormal

Internal power supply abnormal

Sync signal abnormal (input)

Sync signal abnormal (output)

ECU not connected

Transmission abnormal

Connecting confirmation: abnormal

Connecting confirmation: no response

Registered device data missing

(History of registered devices)

Master unavailable

Connecting confirmation: abnormal

Connecting confirmation: no response

Last mode abnormal

Command/order: no response

Mode status abnormal

Transmission fault

Master reset

Slave reset

Master abnormal

Registration completion

acknowledgement error

Voice processor ON abnormal

ON/OFF command or parameter abnormal

Registration command transmission

Multiple frames intermit.

Diagnosis - no response

000110111213202122232425262728

292A30

31

D0D1D2D4D5D6D7D8D9

DA

DB

DC

DD

DE

DF

E0E1E2E3E4

FF

Communi

-cation

control

01H

Logical

address name

Logical

address

Diagnosis

code

Diagnosis details

Gyroscope abnormal

GPS receiver abnormal

RTC abnormal

SS section abnormal

No Time updating

TCXO abnormal

PLL lock abnormal

GPS antenna abnormal

GPS antenna power supply abnormal

Map disc reading abnormal

SPD signal abnormal

Player abnormal

High temperature abnormal

Antenna power supply abnormal

Radio wave beacon - no antenna connected

Optical beacon - no antenna connected

No FM antenna connected

FM receiver abnormal

Radio wave beacon abnormal

Optical beacon abnormal

Voice-control activation SW abnormal

Voice-control Microphone abnormal

Multi-CD-CH (optical cable) abnormal

Multi-CD-CH (optical cable) not connected

Multi-CD-CH (CarNet) abnormal

Multi-CD-CH (CarNet) not connected

HIT64 communication not connected

HIT64 communication abnormal

HIT64 BRQ disconnection

HIT64 BRQ short-circuit

HIT64 disconnection

CarNet communication not connected

CarNet communication abnormal

CarNet periodical communication abnormal

Video circuit abnormal

Back light abnormal (with no current)

Back light abnormal (with excessive current)

Panel open/close mechanical operation abnormal

Front seat monitor abnormal

Heater abnormal

Panel SW abnormal

Touch SW failure

1011121314151640414243444541454647

4A

4B

4C

404140414243505152535455565710111213404110

11

Navigation

/GPS

Extended

communi

-cation

Information

display/front

monitors

58H

80H

02H

32H

34H

Diagnosis code table

FM multiplex

(VICS), radio

wave beacon,

beacon, optical

beacon, FM

multiplex (data),

and FM

multiplex tuner

5AH

84H

5BH

83H

82H

9AH

Voice

control

85H

SW, Audio

SW, SW

shifting,

Command

SW

21H

23H

24H

25H

82

1

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A

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5

6

7

8

F

E

D

C

B

A

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FX-MG8237ZT/EW

Remove the four screws.

-

Removing the Frame (Fig.2)

1

Fig.1

Disconnect the connector and then remove the Grille Assy.

- Removing the Grille Assy (Fig.1)

Fig.2

Grille Assy

Frame

1

Remove the five screws and then remove the Frame.

1

Chassis

- Removing the Chassis (Fig.3)

1

Remove the eight screws.

Fig.3

Disconnect the connector and then remove the Chassis.

1

When reassembling: While putting Knob units back on each place, steady each PCB behind (Right PCB, Left PCB) with your other hand because the PCB is fragile.

Knob Unit

7. GENERAL INFORMATION

7.1 DIAGNOSIS

7.1.1 DISASSEMBLY

*) This model is different partially from this photo.

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- Removing the Main Unit (Fig.5)

1

Fig.5

Straight the tabs at three locations indicated.

2

Remove the two screws and then remove the Main Unit.

2

Main Unit

- Removing the Cassette Mechanism Module (Fig.4)

Fig.4

Cassette Mechanism Module

Remove the four screws and then remove the Cassette Mechanism Module.

1

2

1

234

12

34

F

E

D

C

B

A

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7

8

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E

D

C

B

A

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FX-MG8237ZT/EW

-

Removing the Control Unit(G2T) (Fig.6)

1. Remove the eight screws and then remove the Case.

2. Apply shorting solder to the PU flexible cable before disconnecting it from the connector.

3. Disconnect the connector.

4. Remove the two screws B.

5. Remove the Control Unit(G2T).

- Removing the CD Mechanism Unit (Fig.6)

1. Remove the two springs A and two springs B.

2. Remove the three screws A and then remove the Bracket Unit.

3. Remove the four Dampers and then remove the CD Mechanism Unit.

Case

Shorting solder

Damper

Sheet

Damper

Spring A

Spring B

Sheet

Spring A

Screw A

Sheet

Spring B

Screw A

Damper

CD Mechanism Unit

Sheet

Damper

Control Unit (G2T)

Screw B

Fig.6

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- Removing the PU Unit(PX1)

1. Set the mechanism to the shipment mode.

2. Remove the two screws A and two screws B.

3. Remove the Frame.

Fig.7

GGD1250

1

2

3

Control Unit(G2T)

- Cautions on replacing the CD mechanism unit

The CD mechanism units available as service parts have been set in the shipment mode at the factory. Before mounting it on the product to be serviced, be sure to apply the power to a CD mechanism to put it into the initial mode, where the carriage mech assy stays at the disc clamp position, in accordance with the following method:

1. Keep a CD mechanism unit out of the product to be serviced as shown below. Connect the 50-pin connector of the control unit (G2T) in the product and the 50-pin connector of the PCB unit (Side) in the CD mechanism by using the extension cable (GGD1250).

2. Apply the power (+14V) to the product to move the CD mechanism until it enters the initial mode and stops. (Operating time: about 30 seconds)

3. When it is confirmed that the CD mechanism stops in the initial mode, the setting completes.

PCB Unit(Side)

86

1

234

12

34

F

E

D

C

B

A

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B

A

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FX-MG8237ZT/EW

15. While pressing the shaft holder in the direction shown by the black arrow in the right figure, remove the PU Unit together with the Screw Unit.

Note: To assemble the PU Unit, insert the Spring on the PU rear between the PU Unit and the Guide first.

Fig.10

4. Apply shorting solder to the PU flexible cable before disconnecting it from the connector CN12.

5. Disconnect the flexible cable from the connector CN12, and remove the flexible cable Holder.

6. Remove the washer and Arm. (Be careful not to lose the spring B.)

7. Remove the screw, spring A, and Collar.

8. Remove the Carriage Mech. Assy.

Fig.8

9. Apply shorting solder to the PU flexible cable before disconnecting it from the Connector.

10. Disconnect the PU flexible cable from the Connector.

11. Move the PU Unit to the left side slightly by turning the Gear.

12. Pull out the spindle motor Support Wheel Unit upwards to remove it.

13. Remove the Spring.

14. Slide the holder to make it easier to remove the Screw Unit.

Fig.9

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7.1.2 PCB LOCATIONS

MAIN UNIT

KEYBOARD PCB

CONTROL UNIT (G2T)

A

B

C

F

E

G

H

D

PCB UNIT(SIDE)

PCB UNIT

PCB UNIT(M2 UNIT)

PCB UNIT(LOAD)

PCB UNIT(LED)

SENSOR UNIT

J

DECK UNIT

I

LEFT PCB

L

RIGHT PCB

K

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A

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FX-MG8237ZT/EW

SW1

TX1+

NC

SLD1 RSR+

GND

NC

RSL-

NC

SW2

RSL+

rmut

RSR-

ADIM

TX1-

NC

GND

CDL-CDL+CDR-CDR+SGND

mute

+B

ACC

TX-TX+NC

ILL-

ACC

+B

ILL+

ANT

(AMP+)

NC

ATX+

ATX-

NC NC

NC

mute

R-

R+ L+

L-

GND

SLD

SUB

ANTENNA

MAIN

ANTENNA

S H I PS H I P

7.1.3 CONNECTOR FUNCTION DESCRIPTION

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- Pin Functions (PD5789A)

Pin No. Pin Name I/O Function and Operation

1 FMSD I T

uner : FM SD input

2 ST I Tuner : FM stereo indicator inpu

t

3

BLIGHT O

Back Light ON/OFF output

4 LAMP O

Lamp power supply control output

5 LDO O

LCD driver : Data output

6 LDI I

LCD driver : Data input

7 LCK O

LCD driver : Clock output

8 BYTE I

Connect to ground

9 CNVSS I G

round

10 LOCL O T

uner : Local L output

11 PCE2 O T

uner : E2PROM chip enable output

12 reset I

Reset Input

13 XOUT O C

rystal oscillating element connection terminal

14 VSS

GND

15 XIN I

Crystal oscillating element connection terminal

16 VDD

Power supply terminal

17 nmi I Connect to VD

D

18 rck I

RDS : Clock input

19 ldet IT

uner : PLL lock sense input

20 cdej I

CD EJECT key sense input

21 RX2 I I

P-BUS : Data input

22 IPPW O I

P-BUS : Driver power supply output

23 SDBW I

SDBW input

24 SHIMUKE1 I M

odel select input

25 RDS57K I

RDS : 57kHz pulse count input

26 currq OT

uner voltage FIX output

27 DRST O

RDS : Decoder reset output

28

RDSMUTE O

RDS : Mute output

29 RX1 I I

P-BUS : Data input

30 TX O I

P-BUS : Data output

31 PDO O T

uner : PLL IC data output

32 PDI I T

uner : PLL IC data input

33 pck OT

uner : PLL IC clock output

34 PCE1 O T

uner : PLL IC chip select output

35 BSO O

P–BUS : Serial data output

36 BSI I P

–BUS : Serial data input

37 BSCK O P

-BUS : Serial clock output

38 brxen I/O

P-BUS : Reception enable input/output

39 brst O

P-BUS : Reset output

40 bsrq O

P-BUS : Service request output

41 FMPW O

FM power supply control output

42 AMPW O

AM power supply control output

43 SYSPWR O

System power control output

44 RDT I

RDS : Data input

45 SEL1b O

Amp output select b output

46 SEL1a O

Amp output select a output

47 INH1 O

Amp output inhibit output

48 SEL2b O

RSE output select b output

49 SEL2a O

RSE output select a output

50 INH2 O

RSE output inhibit output

51 RSEMUTE O RSE mut

e output

52 sysmute@ OS

ystem mute output

53 sysmute O

RSE system mute output

54 NC

Not used

55 SWVDD O

Keyboard unit power supply control output

56 LANMUTE I A

VC-LAN mute output

57 ADIM I A

DIM information input

7.2 PARTS

7.2.1 IC

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FX-MG8237ZT/EW

Pin No. Pin Name I/O Function and Operation

58 ROMDT I/O

ROM correction data input/output

59 ROMCLK O R

OM correction clock output

60 TEST I T

est mode input

61 ROMCS O R

OM correction chip select output

62 VCC

Power supply terminal

63 NC

Not used

64 VSS

Grand

65 ISEN I

Illumination power supply sense input

66 MS I

Cassette mechanism : Music search sense input

67 fRO

Cassette mechanism : Head forward/reverse select output

68 PLAY O

Cassette mechanism : MS gain select output

69 mtl I

Cassette mechanism : 70µs equalizer select input

70 NR O

Cassette mechanism : Dolby NR ON/OFF select output

71 CSLOAD I Cassette mechanism : T

ape loading sense input

72 POS I

Cassette mechanism : Position sense input

73 asens I

ACC power supply sense input

74 csej IT

ape eject sense input

75 bsens I

Back up power supply sense input

76 ES I T

ape end sense input

77 SC2 O

Cassette mechanism : Sub motor control 2 output

78 SC1 O

Cassette mechanism : Sub motor control 1 output

79 CM O

Cassette mechanism : Capstan motor control output

80 stby O

Cassette mechanism : Driver stand-by output

81 power IP

OWER key input

82 ENC1+ I

VOL encoder (+) input

83 ENC1- I

VOL encoder (-) input

84 ENC2+ I

AUD encoder (+) input

85 ENC2- I

AUD encoder (-) input

86 LCE1 O

LCD driver 1 chip enable output

87 NC

Not used

88 lrst

CD illumination output

89 NC O

Not used

90 rdslk I

RDS : LK signal input

91 NL1 I

RDS : Noise level input

92 RDSL I

RDS : Signal level input

93 SL I Tuner : S

ignal level input

94 ILL- I

Rheostat signal input

95 STSW2 I S

teering switch 1 input

96 AVSS

A/D converter ground terminal

97 STSW1 I S

teering switch 1 input

98 VREF

A/D converter reference voltage terminal

99 AVCC

A/D converter power supply terminal

100 NL2 I Tuner : N

oise level 2 input

30

31

50

51

80

81

100

1

* PD5789A

* S-80835CNUA-B8U

IC's marked by * are MOS type. Be careful in handling them because they are very liable to be damaged by electrostatic induction.

VREF

123

VDD

VSS

OUT

123

VIN

VOUT

GND

Reference

Voltage

* S-812C56AUA-C3K

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FX-MG8237ZT/EW

- Pin Functions (SM5903BFP)

Pin No. Pin Name I/O Function and Operation

1 VDD2

2-6 UC1-UC5 I/O

7NC 8 NTEST I T

9 CLK I C 10 VSS 11 YSRDATA I 12 YLRCK I 13 YSCK I 14 ZSCK O 15 ZLRCK O 16 ZSRDATA O 17 YFLAG I RAM 18 YFCLK I 19 YBLKCK I 20 NRESET I 21 ZSENSE O M 22 VDD1 23 YDMUTE I M 24 YMLD I M 25 YMDATA I M 26 YMCLK I M 27 A10 O D 28 NCAS O D-RAM : cas

29,30 D2,D3 I/O 31,32 D0,D1 I/O

33 NWE O D-RAM : we 34 NRAS O D-RAM : ras

35-40 A9-A4 O 41-44 A0-A3 O

Power supply terminal Micro computer interface : Extension input / output Not used

est input

lock input (16.9344MHz) Ground terminal Audio : Serial data input Audio : Serial LR clock input Audio : Serial bit clock input Audio : Serial bit clock output Audio : Serial LR clock output Audio : Serial data output

over flow flag input from signal processing IC Frame clock input Sub code block clock input System reset input

icro computer interface : Status output

Power supply terminal

ute input icro computer interface : Latch clock input icro computer interface : Serial data input icro computer interface : Shift clock input

-RAM : Address output control output

D-RAM : Data input / output D-RAM : Data input / output

control output

D-RAM : Address output D-RAM : Address output

SM5903BFP

33

23

22

34

44

1

11

12

S-818A33AUC-BGN

VIN ON/OFF

ON/OFF

VREF

45

1 2 3

VOUT VSS NC

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6

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8

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E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

- Pin Functions (PD5748E)

Pin No. Pin Name I/O Function and Operation

1 STSMO O

STS test output

2 SPDLFG I

Spindle FG pulse input

3 TXTSO O

TEXT control parameter serial output

4 TXTSI I

TEXT data serial input

5 TXTSCK O

TEXT clock output

6 BYTE I

VCC connected

7 CNVSS I

VSS connected

8 POWER O

CD : +5V control output

9 CONT O

CD : Servo driver control output

10 reset I

Reset input

11 XOUT O Crystal oscillating element connection pi

n

12 VSS1

GND

13 XIN I Crystal oscillating element connection pi

n

14 VCC

Back up 5V

15 nmi I

Pull up

16 NC

Not used

17 BRST I

P–BUS reset input

18 TXTPACK I TEXT P

ACK interrupt input

19,20 NC O

Not used

21 CAMOK I

Cam operation sense 1 input

22 CAMLOAD I

Cam operation sense 2 input

23 CAMCLMP I

Cam operation sense 3 input

24 testin IT

est program start input

25 LOCK I

CD : LSI spindle lock sense input

26 TXTSTB O

TEXT parameter output

27 BRXEN I/O

P-BUS : Reception enable input/output

28 BSRQ O P

-BUS : Serial pole request output

29 BSO O

P–BUS : Serial data output

30 BSI I P

–BUS : Serial data input

31 BSCK O

P–BUS : Clock output

32 NC O

Not used

33 XSO O

CD : LSI data output

34 XSI I

CD : LSI data input

35 XSCK O

CD : LSI clock output

36 VDCONT O

VD control output

37 LCCONT O

LCD drive voltage select output

38–44 NC O

Not used

45 STSSL O S

TS IC latch output

46 NC O

Not used

47 XAO O

CD : LSI data discernment control signal output

48 xstb O

CD : LSI strobe output

49 xrst O

CD : LSI reset output

50 ccs OC

ompression IC chip enable output

51 epcs I/O

EEPROM detect input , Chip select output

52 FOK I

CD : LSI focus OK signal input

53 ELVCONT O ELV

drive voltage select output

54–58 NC O

Not used

59 STSWAQV O

STS test output

60 VCC

Power supply

61 STSDEC O

STS test output

62 VSS2

GND

63 STSENC O

STS test output

64 STSSTD O

STS test output

65 STSSTC O

STS test output

66 STSSTB O

STS test output

67 STSSTA O

STS test output

68–71 NC O

Not used

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FX-MG8237ZT/EW

Pin No. Pin Name I/O Function and Operation

72 HOME2 I

Disc clamp claw sense input

73 SBSY I

Sub code synchronous interrupt signal input

74 CDMUTE O

CD : Mute output

75 LO2 O

LOAD motor control 2 output

76 LO1 O

LOAD motor control 1 output

77 ELV2 O ELV

Motor control 2 output

78 ELV1 O ELV

Motor control 1 output

79 HOME I

Carriage home switch input

80 STS16M I

STS DRAM 4M/16M(H) select input

81 LOADSW1 I

LOAD operation sense 1 input

82 LOADSW2 I

LOAD operation sense 2 input

83,84 NC

Not used

85 adena OA

VREF enable output

86 CG1 O C

am motor 1 output

87 CG2 O C

am motor 2 output

88 LOADVOL2 I

LOAD voltage sense 2 input

89 LOADPHT I

LOAD operation photo sense input

90 LOMMON O

Not used

91 ELVSENS I ELV

position select input

92 EREFF EL

V sense reference voltage

93 TEMP I CD : T

emperature sense input

94 AVSS

A/D converter ground potential

95 VDIN I

CD : Power supply short sensor input

96 VREF I

A/D converter reference voltage input

97 AVCC

A/D converter ground

98 STSSI I

STS IC data input

99 STSSO O

STS IC data output

100 STSSCK O

STS IC clock output

25

26

50

51

75

76

100

1

* PD5748E

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95

BA6849FS

Hall BiasHall BiasHall BiasHall BiasHall Bias

2

3

4

5

6

7

8

9

10

11

12

1

23

22

21

20

19

18

17

16

15

14

13

24

DRIVER

GAIN

CONTROL

TSD

TL

PS

TORQUE

SENSE AMP

Vcc

SHORT BRAKE

Hall Bias

HALL AMP

DCKQ

q

R

CURRENT

SENSE AMP

GND

A3

A2

NC

A1

GND

H1+

H1-

H2+

H2-

H3+

H3-

RNF

VM

VCC

FG

PS

EC

ECR

FR

SB

CNF

NC

VH

A0-A10

ras cas

DQ1-DQ4

oe we

VCC VSS

1

2

3

4

5

6

8

9

10

11

12

13

26

25

24

23

22

21

19

18

17

16

15

14

VCC

DQ1

DQ2

we

ras

NC

A10

A0

A1

A2

A3

VCC

VSS

DQ4

DQ3

cas

oe

A9

A8

A6

A5

A4

VSS

A7

: Address input : Row address strobe : Column address strobe input : Data input / output : Output enable input : Write enable input : Power supply(3.3V) : Ground(0V)

* MSM51V17400F6TFT

GND2

36

33

32

31

30

29

28

27

26

25

24

23

22

21

1

4

5

6

7

8

9

10

11

12

13

14

15

18

20

19

35

34

2

3

17

16

Control

logic

+

-

F

R

CH5

CH2

CH1

CH3

CH4

LD

CONT1

CH6

Vcc3

BIAS

Vcc2

MUTE

T.S.D

Vcc1

Control

logic

-

+

R

F

Control

logic

-

+

R

F

LD

CONT3

LD

CONT2

(CH3,CH4)

(CH1,CH2)

(CH5,CH6)

LEVEL SHIFT LEVEL SHIFT

OUT5-

OUT5+

IN5FWD

IN5REV

IN6REV

IN6FWD

LDCONT2

OPIN1-

OP1OUT

OPIN2-

OP2OUT

VCC1

OUT2-

OUT2+

OUT1-

OUT1+

LDCONT3

BIAS

OUT6-

OUT6+

OP3OUT

OPIN3-

IN4FWD

IN4REV

MUTE

OPIN-

OPOUT

GND1

LDCONT1

VCC2

OUT4-

OUT4+

OUT3-

OUT3+

VCC3

BD7962FM

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

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96

No. Symbol I/O Explain

1 STIND O stereo

"Low" when the FM stereo signals are received.

indicator To be pulled up to the "VDD" at 47kΩ.

2 FMSD FM station "High" when signals are received. To be pulled up to the "VDD" at 47kΩ

detector Meanwhile, 10kΩ should be used when taking diver FIX trigger from here

and "High: 0.9VDD or more" and "Low: 250mV or less". (Should satisfy the diver IC specifications)

3 NL1 O noise level-1

"High" when noise is received. Output for the RDS. GND at 47kΩ//1,800pF.

4 NL2 O noise level-2 "High" when noise is received. Output for the RDS. GND at 36kΩ//330pF. 5 Rch O R channel

FM stereo "R-ch" signal output or AM audio output.

output Add the specified de-emphasis constant.

6 Lch O L channel

FM stereo "L-ch" signal output or AM audio output.

output

Add the specified de-emphasis constant.

7 WC write control

EEPROM write control. Writing permissible at "Low". Normally open. 8 SDBW O SD bandwidth SD bandwidth signal output. For detection of detuning data for the RDS. 9 AMDET O AM detector

AM detector output. r out < 100Ω

output

10 VDD power

Power supply pin for the digital section.

supply

DC 5V +/- 0.25V. Be careful about overlapping noise in the logic section.

11 DGND digital ground Grounding for the digital section. 12 CE2 I chip enable-2

EEPROM chip enable. Active a "Low"

To be pulled up to the "VDD" at 47kΩ

13 SL I/O signal level

Received FM/AM signal level (strength) output.

Connect the specified load resistor and capacitor (10k Ω+ 39k Ω//4,700pF)

14 DI/DO I/O data input/

Data input/Data output

data output

To be pulled up to the "VDD" at 47kΩ

15 CK I clock

Clock input To be pulled up to the "VDD" at 47kΩ

16 CE1 I chip enable-1

AF·RF chip enable. Active at "High"To be grounded at 47kΩ

17 AMPNS AM PNS IF signal

IF signal output for AM PNS circuit.

18 LDET O lock detector

Active at "Low". To be pulled up to the "VDD" at 47kΩ

19 CREQ I current request Active at "Low". To be grounded at 47kΩ 20 AMINI AM audio input

The frequency response and the level are set by connecting an external CR

network with terminal AMIN as terminal AMDET. r in = 50kΩ

21 COMP O composite signal

FM composite signal output. r out < 100Ω

22 VCC power supply

Analog section power supply pin.DC 8.4V +/- 0.3V

23 LOCH I local high FM local high pin. When seeking local high, apply 5V together with "LOCL". 24 FMLOCL I FM local low FM local low pin. When seeking local low, apply 5V to the base of the NPN

transistor with which the specified resistor is being connected to the emitter.

Keep it open in case of ordinary marketed models.

25 LOCL I local low FM/AM local low pin. When seeking local low, apply 5V to the base of the

NPN transistor.

Since this pin is exclusive for AM when the FMLOCL is in use,

do not drive it under FM.

26 RFGND RF ground Grounding for the antenna section. 27 FMANT I FM antenna input FM antenna input. 75Ω. Surge absorber (DSP-201M-S00B) is necessary. 28 AMANT I AM antenna input AM antenna input. High impedance.

Connect to the antenna through an L (LAU type) of 4.7µH.To cope with the

power transmission line hums, insert a series circuit consisting of an L

(a coil of about 100mH) + R (a resistor of 470 Ω to 2.2kΩ) between the GND.

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 3

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

- FM/AM Tuner Unit

O

42

1

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12

34

F

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6

7

8

FX-MG8237ZT/EW

COMMON

SEGMENT

- LCD(CAW1722)

COM1B

COM4B

COM3B

COM2B

COM1A

COM2A

COM3A

COM4A

SEG33

SEG34

SEG35

SEG36

SEG37

SEG38

SEG39

SEG40

SEG41

SEG42

SEG43

SEG44

SEG45

SEG46

SEG47

SEG48

SEG49

SEG50

SEG51

SEG52

SEG53

SEG54

SEG55

SEG56

SEG57

SEG58

SEG59

SEG60

SEG61

SEG62

SEG63

SEG64

SEG65

COM4B

COM3B

COM2B

COM1B

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

SEG32

SEG1

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

SEG16

COM4A

COM1A

COM2A

COM3A

7.2.2 DISPLAY

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FX-MG8237ZT/EW

AMPLIFIER

GM-8337ZT/E or OTHER MAKERS

NAVI

SPEAKER

Except FR

+B, ACC

AVC-LAN

FR

FL(or FR)

AVC-LAN

L / R

Video

OTHER MAKERS

FX-MG8237ZT/EW FX-MG8337ZT/EW

EMV

OTHER MAKERS

AMPLIFIER

GM-8337ZT/E or

OTHER MAKERS

SPEAKER

+B, ACC

AVC-LAN

L / R

FX-MG8237ZT/EW FX-MG8337ZT/EW

- System 1

- System 2

7.3 EXPLANATION

7.3.1 SYSTEM BLOCK DIAGRAM

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VCC=5V

Pin 62

Power ON

bsens=L

asens=L

YES

VDD=5V

Pin 16

bsens

Pin 75

asens

Pin 73

SYSPWR←H Pin 43

IPPW←H Pin 22

SWVDD←H Pin 55

Source keys operative

Completes power-on operation. (After that, proceed to each source operation)

Source ON

5

6

7

8

F

E

D

C

B

A

5

6

7

8

FX-MG8237ZT/EW

7.3.2 OPERATIONAL FLOW CHART

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7.4 NOTES ON SERVICING

7.4.1 CLEANING

7.4.2 FACTORY SETTINGS

Before shipping out the product, be sure to clean the following portions by using the prescribed cleaning tools:

Portions to be cleaned Cleaning tools CD pickup lenses Cleaning liquid : GEM1004

Cleaning paper : GED-008

Portions to be cleaned Cleaning tools Cassette heads Pinch rollers Cleaning paper : GED-008 Capstans

- When the Repair is Complete

When the Repair is Complete, make the CD mechanism ready for transportation.

Turning on "Shipment mode"

(to prevent damage during shipment)

-

Remove all discs loaded in this product, before disconnecting the power

supply connector .

-

Set this product to the "Shipment mode" and

-

then disconnect the power supply connector

-

before shipping.

-

Setting the "Shipment mode"

-

Switch ACC OFF, and then, while simultaneously pressing the "SEEK UP" (or "TUNE UP" ) and

-

"DISC"buttons, switch ACC ON.

-

Confirming "Shipment mode" setting

-

During Shipment mode setting the CD loading door indicator flashes.

-

when shipment mode setting is completed, it stays lit.

-

(If the radio unit itself has a display, "SHIP" is indicated.)

-

After disconnecting the power supply connector and removing this product,

-

confirm that you can see a metal plate through the hole near the "SHIP"

-

mark on the rear chassis.

-

Confirm that the door of the CD player is closed.

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

Specifications and Main Features

Frequently Asked Questions

User 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)

3.6 CASSETTE MECHANISM MODULE

4. PCB CONNECTION DIAGRAM

4.1 MAIN UNIT

4.2 KEYBOARD PCB

4.3 CD MECHANISM MODULE

4.4 CASSETTE MECHANISM MODULE

4.5 RIGHT PCB, LEFT PCB

5. ELECTRICAL PARTS LIST

6. ADJUSTMENT

6.1 CONNECTION DIAGRAM

6.2 AUDIO, TUNER ADJUSTMENT

6.3 TEST MODE

6.4 CD ADJUSTMENT

6.5 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT

6.6 TEST MODE(CD)

6.7 AVC-LAN DIAGNOSIS MODE

7. GENERAL INFORMATION

7.1 DIAGNOSIS

7.1.1 DISASSEMBLY

7.1.2 PCB LOCATIONS

7.1.3 CONNECTOR FUNCTION DESCRIPTION

7.2 PARTS

7.2.1 IC

7.2.2 DISPLAY

7.3 EXPLANATION

7.3.1 SYSTEM BLOCK DIAGRAM

7.3.2 OPERATIONAL FLOW CHART

7.4 NOTES ON SERVICING

7.4.1 CLEANING

7.4.2 FACTORY SETTINGS