TOYOTA KEH-8056 Service Manual

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

PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
PIONEER EUROPE NV Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936

C PIONEER CORPORATION 2000

K-ZZY. JUNE 2000 Printed in Japan

ORDER NO.

CRT2531

HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER

KEH-8056ZT X1N/ES

VEHICLE DESTINATION PRODUCED AFTER PART No. ID No. PIONEER MODEL No.
Not specified Puerto Rico, July 2000 08600-00946 T7409 KEH-8056ZT/X1N/ES

Chile, Peru,
Venezuelz,
The Caribbean
countries

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

Model Order No. Mech. Module Remarks
CX-644 CRT1800 2M Cassette Mech. Module:Mech.Description, Disassembly
KEH-1950/X1M/ES CRT2424

TOYOTA

KEH-8056ZT

1 Cord Assy CDE6276
* 2 Accessory Assy CEA2605
* 3 Polyethylene Bag E36-615

4 Screw TRZ50P080FMC

5 Polyethylene Bag CEG-162

6 Carton CHG3977

7 Contain Box CHL4104

8 Protector CHP2232

9 Protector CHP2233

10 Owner’s Manual CRD3256

* 11 Caution Card CRP1221

12 Case Assy CXB5408

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

- PACKING SECTION PARTS LIST

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.

4

3

2

1

9

9

8

7

12

5

6

10

11

EXPLODED VIEWS AND PARTS LIST

PACKING

3

KEH-8056ZT

EXTERIOR (Page 4)

- EXTERIOR SECTION PARTS LIST

Part No.

Mark No. Description KEH-1950/X1M/ES KEH-8056ZT/X1N/ES

10 Panel CNS5214 Not used
28 Chassis Unit CXA9851 CXB4403
29 Holder Unit CXA2687 Not used
30 Detach Grille Assy CXB4674 CXB6018
32 Button(EJECT) CAC5870 CAC5871

33 Button(REW) CAC5872 CAC5873
34 Button(FF) CAC5874 CAC5875
35 Button(CROSS) CAC6295 CAC6296
38 Button(DETACH) CAC6301 CAC6302
41 Cover CNS5696 CNS5697

50 Grille Unit CXB4634 CXB6015
60 Panel Unit CXB4926 CXB6016
61 Door CAT2109 CAT2108
65

Cassette Mechanism Assy EXK3410 EXK3710

70 Spacer Not used CNS5925

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

PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936

C PIONEER CORPORATION 1999

K-ZZY. NOV. 1999 Printed in Japan

ORDER NO.

CRT2424

HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER

KEH-1900 X1M/UC

CONTENTS

1. SAFETY INFORMATION............................................2

2. EXPLODED VIEWS AND PARTS LIST ......................2

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ....8

4. PCB CONNECTION DIAGRAM................................18

5. ELECTRICAL PARTS LIST........................................26

6. ADJUSTMENT.........................................................30

7. GENERAL INFORMATION.......................................32

7.1 DISASSEMBLY ..................................................32

7.2 PARTS ................................................................33

7.2.1 IC...............................................................33

7.2.2 DISPLAY ...................................................36

8. OPERATIONS AND SPECIFICATIONS....................37

KEH-1950 X1M/ES

KEH-1900/X1M/UC

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

Model No. Order No. Mech. Module Remarks
CX-644 CRT1800 2M Cassette Mech. Module:Circuit Description, Mech.Description, Disassembly

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

PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936

C PIONEER CORPORATION 1999

K-ZZY. NOV. 1999 Printed in Japan

ORDER NO.

CRT2426

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

Model Order No. Mech. Module Remarks
CX-644 CRT1800 2M Cassette Mech. Module:Mech.Description, Disassembly
KEH-1900/X1M/UC CRT2424

HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER

KEH-1900 X1N/UC

KEH-1900 X1IN/UC
KEH-1950 X1N/ES
KEH-1950 X1IN/ES

KEH-1900,1950

EXTERIOR(Page 4)

- EXTERIOR SECTION PARTS LIST

Part No.

Mark No. Description KEH-1900/X1M/UC KEH-1900/X1N/UC KEH-1900/X1IN/UC

29 Holder Unit CXB2687 Not used CXB2687

Holder Not used CNC6798 Not used

Part No.

Mark No. Description KEH-1950/X1M/ES KEH-1950/X1N/ES KEH-1950/X1IN/ES

29 Holder Unit CXB2687 Not used CXB2687

Holder Not used CNC6798 Not used

EXPLODED VIEWS AND PARTS LIST

PACKING(Page 2)

- PACKING SECTION PARTS LIST

Part No.

Mark No. Description KEH-1900/X1M/UC KEH-1900/X1N/UC KEH-1900/X1IN/UC

7 Carton CHG3913 CHG3921 CHG3917
8 Contain Box CHL3913 CHL3921 CHL3917

Part No.

Mark No. Description KEH-1950/X1M/ES KEH-1950/X1N/ES KEH-1950/X1IN/ES

7 Carton CHG3914 CHG3922 CHG3918
8 Contain Box CHL3914 CHL3922 CHL3918

3

6

10

2

9

8

7

5

4

14

19

18

11

15

13

12

1

16

20

17

2

KEH-1900,1950

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

1. SAFETY INFORMATION

CAUTION

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.

W

ARNING

This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of
California to cause cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 - Proposition 65

3

KEH-1900,1950

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.

- PACKING SECTION PARTS LIST

Part.No

Mark No. Description KEH-1900/X1M/UC KEH-1950/X1M/ES

* 1 Accessory Assy CEA2350 CEA2350

2 Spring CBH1650 CBH1650
3 Screw Assy CEA2351 CEA2351
4 Screw CBA1304 CBA1304

* 5 Polyethylene Bag CEG-127 CEG-127

6 Screw CRZ50P090FMC CRZ50P090FMC
7 Screw TRZ50P080FMC TRZ50P080FMC

* 8 Polyethylene Bag CEG-158 CEG-158

9 Handle CNC5395 CNC5395

10 Bush CNV3930 CNV3930

11 Polyethylene Bag CEG1173 CEG-162
12 Carton CHG3913 CHG3914
13 Contain Box CHL3913 CHL3914
14 Protector CHP1622 CHP1622
15 Protector CHP1623 CHP1623

16 Owner’s Manual CRD3099 CRD3097
17 Installation Manual CRD3100 CRD3098
18 Case Assy CXB3520 CXB3520
19 Cord Assy CDE6145 CDE6145

* 20 Card ARY1048 Not used

- Owner's Manual

Model Part No. Language
KEH-1900/X1M/UC CRD3099 English, French, Spanish
KEH-1950/X1M/ES CRD3097 English, Spanish, Portuguese(B), Chinese, Arabic

- Installation Manual

Model Part No. Language
KEH-1900/X1M/UC CRD3100 English, French, Spanish
KEH-1950/X1M/ES CRD3098 English, Spanish, Portuguese(B), Chinese, Arabic

4

KEH-1900,1950

2.2 EXTERIOR

5

KEH-1900,1950

(1) EXTERIOR SECTION PARTS LIST

Mark No. Description Part No.

Mark No. Description Part No.

1 Screw BSZ26P050FMC
2 Screw BSZ30P055FUC
3 Screw BSZ30P060FMC
4 Screw BSZ30P100FMC
5 Cord Assy CDE6145

6 Case CNB2481
7 Holder CNC5704
8 Insulator CNM5025
9 Cushion CNM5210

10 Panel CNS5214

11 Tuner Amp Unit

See Contrast table(2)

12 Screw BPZ26P080FMC
13 Screw BSZ26P080FMC
14 Screw BSZ26P140FMC
15 FM/AM Tuner Unit

See Contrast table(2)

16 Holder CNC6554
17 Pin Jack(CN401) CKB1028
18 Plug(CN603) CKM1270
19 Connector(CN601) CKS3362
20 Connector(CN602) CKS3581

21 Antenna Jack(CN301) CKX1056
22 Panel CNB2247
23 Holder CNC5399
24 Holder CNC6216
25 Heat Sink CNC6217

26 Holder CNC6531
27 Holder CNC6845
28 Chassis Unit CXA9851
29 Holder Unit CXB2687
30 Detach Grille Assy

See Contrast table(2)

31 Screw BPZ20P120FZK
32 Button(EJECT) CAC5870
33 Button(REW) CAC5872
34 Button(FF) CAC5874
35 Button(CROSS) CAC6295

36 Button(TUNER/BAND) CAC6297
37 Button(1-6) CAC6300
38 Button(DETACH) CAC6301
39 Spring CBH1836
40 Spring CBH2307

41 Cover CNS5696
42 Keyboard Unit CWM6745
43 LCD(LCD901) CAW1568
44 Connector(CN901) CKS3580
45 Holder CNC8525

46 Sheet CNM6486
47 Lighting Conductor CNV5969
48 Rubber CNV5970
49 Connector CNV5972
50 Grille Unit

See Contrast table(2)

51 Button CAC4836
52 Spring CBH1834
53 Spring CBH1835
54 Spring CBH2367
55 Bracket CNC6135

56 Bracket CNC6791
57 Arm CNV4692
58 Arm CNV4693
59 Arm CNV4728
60 Panel Unit CXB4926

61 Door CAT2109
62 Spring CBH1838
63 Screw IMS20P030FZK
64 Fuse(10A) CEK1136
65

Cassette Mechanism Assy EXK3410

66 IC(IC501) TDA7384
67 Transistor(Q804) 2SD2395

* 68 Cord

See Contrast table(2)

69 Holder See Contrast table(2)

(2) CONTRAST TABLE
KEH-1900/X1M/UC and KEH-1950/X1M/ES are constructed the same except for the following:

Part No.

Mark No. Description KEH-1900/X1M/UC KEH-1950/X1M/ES

11 Tuner Amp Unit CWM6742 CWM6744
15 FM/AM Tuner Unit CWE1467 CWE1486
30 Detach Grille Assy CXB4673 CXB4674
50 Grille Unit CXB4633 CXB4634

* 68 Cord CDC1043 Not used

69 Holder CNC8818 Not used

6

KEH-1900,1950

2.3 CASSETTE MECHANISM ASSY

7

KEH-1900,1950

1 Screw BSZ23P050FMC
2 Washer CBG1003
3 Connector(CN1) CKS2829
4 Screw(M2x5) EBA1038
5 Screw(M2x2.5) EBA1037

6 Spring EBH1554
7 Spring EBH1555
8 Spring EBH1556
9 Spring EBH1603

10 Spring EBH1591

11 Spring EBH1559
12 Spring EBH1593
13 Spring EBH1561
14 Spring EBH1562
15 Spring EBH1563

16 Spring EBH1623
17 Spring EBH1565
18 Spring EBH1566
19 Spring EBH1567
20 Spring EBH1568

21 Spring EBH1569
22 Spring EBH1571
23 Spring EBH1579
24 Head Base ENC1475
25 Lever ENC1429

26 Lever ENC1430
27 Lever ENC1431
28 Lever ENC1432
29 Arm ENC1433
30 Arm ENC1434

31 Arm ENC1480
32 Arm ENC1493
33 Bracket ENC1477
34 Lever ENC1483
35 Arm ENC1524

36 Frame ENC1440
37 Holder ENC1441
38 Lever ENC1446
39 Lever ENC1478
40 Belt ENT1027

41 Gear ENV1504
42 Gear ENV1470
43 Gear ENV1471
44 Lever ENV1472
45 Gear ENV1510

46 Gear ENV1475
47 Gear ENV1512
48 Gear ENV1513
49 Gear ENV1502
50 Lever ENV1480

51 Lever ENV1487
52 •••••
53 Arm ENV1519

* 54 PCB ENP1161

55 •••••

56 Switch(FWD)(REV)(S3) ESH1006
57 Switch(Load)(S1) ESN1016
58 Switch(Mute)(S2) ESN1017
59 Head Assy(HD1) EXA1466
60 Motor Unit(M1) EXA1467

61 Flywheel Unit EXA1547
62 •••••
63 Arm Unit EXA1447
64 Arm Unit EXA1448
65 Arm Unit EXA1534

66 Reel Unit EXA1450
67 Pinch Holder ENV1466
68 Pinch Roller ENV1518
69 Pinch Holder ENV1467
70 •••••

71 Chassis Unit EXA1498
72 Arm ENV1524
73 Washer HBF-167

74-78 •••••

79 Cover ENC1452

80 Washer CBF1051
81 Spring EBH1592

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

- CASSETTE MECHANISM ASSY SECTION PARTS LIST

KEY MATRIX

HEAD

M

MOTOR

FWD
Lch

REV
Lch

FWD-L

REV-L

Q808

Q806

Q807

Q805

FM SWITCH

AM SWITCH

FM

AM

FIX+B

VCO

AMIF

EO

Q303

Q302

LOOP FILTER

3

13

6

54

51

X601

4.5MHz

25

24

EO

AMIF

VCOIN

FM

AM

XI

XO

SL

FMSD

14
12

SYSTEM CONTROLLER

IC 601 (1/2)

PE5107A

SL

FMSD

Q804

9V REGULATOR

FIX+B

Q803

Q802

B.U

SYSPW

ILL+B

ILL+B

IL901-903

FM

OSC

Q201

Q202

FMTV

AM

OSC

AMIFC

VCO

FM+B AM+B

TUN+B

FMSD

25
26

19

20 15

17

21

14

13 6

7

9

18

41 9

10 14

15

17 19

47 1

2

19

43

40

28

30

31

252318

16

36

3238

6

34

Q3

FM RF

T31

FM/AM MIX

Q31

CF51

FM/AM IF

CF52
FM IF

CF53
FM IF

T51

FMSL
AMSL

AMTV

AMRF/AGC

CF232 AM IF

FM/AM PROCESSOR

IC 1

PA4023B

FM PROCESSOR

IC 2

PA4024A

TUN-L

FIX+B

A

B

C

D

KEYBO

FM/AM TUNER UNIT

TUNER AMP UNIT

CN301

ANT

8

KEH-1900,1950

A

1

234

B

C

D

12

34

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

- KEH-1900/X1M/UC

9

KEH-1900,1950

5

6

7

8

A

B

C

D

5

6

7

8

IC 501

TDA7384

FL+
FL-

RL+
RL-

MUTE

STBY

FL
RL

POWER AMP

9
7

17
19

FL+
FL-

RL+
RL-

6
5

8
9

7

2

1

22

4

SYSPW

Q501

Q609

Q502

Q607

MUTE

Q608

DMINH

Q606

FUSE
10A

B.U

B.U

ACC

CE

VDD1
VDD2

VDD

Q603

Q604

Q605

Q801

IC 801

TPD1018F

B REMOTE

BRE

CN603

1

SYSPW

6

5

B.U

SYSPW

SYSPW

437

4039

CE

DMINH

MUTE

11

15

19

20

IC 401

SN761029DL

ELECTRONIC

VOLUME

VDT/VCK/VST

2
3

3

IC 201

LA3161P

CASSETTE

EQUALIZER

1

B.U

FIX+B

4

MUTE

Q601

63

TAPLD

1

2

NOR/REV

MCMUT

LOAD

B.U

MECPW

50

Q809

Q810

MECPW

MECHA

POWER SWITCH

MECHA MUTE

MUTE

Q403

RL OUT

RL

Q602

SWVDD

18

VDD

SWVDD

9

10

LCK
LDT

4
3

5
6

CN602

ILL+B
SW5V

SCK
SIO

4
3

5

6

IC 901

PDC045A

KEY/LCD
DRIVER

RES
SCK

SO

SI

VDD

24

17
15
14
13

MATRIX

LCD 901

CAW1568

CN901

SYSTEM CONTROLLER

IC 601 (2/2)

PE5107A

MUTE SWITCH

LOAD SWITCH

FWD/REV

FWD/REV SWITCH

GND

1

10

6

8

4

9

1

10

6

8

4

9

CN601

FWD-L

REV-L

ILL+B

Q401

TUN-L

FL
SPEAKER

RL
SPEAKER

ACC

BATTERY

B REMOTE

D

CASSETTE PCB

CN401

REAR Lch OUT

FL+
FL-

RL+
RL-