PIONEER KEH-3900R, KEH-3930 Service Manual

Service KEH-3930R/X1M/EW
Manual	ORDER NO.
	CRT2420

HIGH POWER CASSETTE PLAYER WITH RDS TUNER

KEH-3930R X1M/EW

KEH-3900R X1M/EW

- 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:Circuit Description, Mech.Description, Disassembly

CONTENTS

1.	SAFETY INFORMATION ............................................		2	7. GENERAL INFORMATION .......................................	37
2.	EXPLODED VIEWS AND PARTS LIST .......................		2	7.1 DISASSEMBLY ...................................................	37
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .....			9	7.2 PARTS .................................................................	38
4.	PCB CONNECTION DIAGRAM ................................		22	7.2.1 IC................................................................	38
5.	ELECTRICAL PARTS LIST ........................................		32	7.2.2 DISPLAY ....................................................	42
6.	ADJUSTMENT..........................................................		36	8. OPERATIONS AND SPECIFICATIONS.....................	43
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-ZZD. NOV. 1999 Printed in Japan

KEH-3930R,3900R

1. SAFETY INFORMATION

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

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

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

12

2

4

3

5

10	13
	1

11

7

9

8

2

KEH-3930R,3900R

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.

(1)PACKING SECTION PARTS LIST

Mark No. Description			Part No.		Mark No. Description			Part No.
	1	Cord Assy	CDE6100			11	Protector	CHP2244
	2	Accessory Assy	CEA1917			12-1	Owner’s Manual	CRD3122
	3	Screw	CBA1304			12-2	Owner’s Manual	CRD3123
	4	Handle	CNC5395			12-3	Installation Manual	CRD3124
	5	Bush	CNV3930	*		12-4	Passport	CRY1013
*	6	Polyethylene Bag	E36-615	*		12-5	Warranty Card	CRY1157
	7	Polyethylene Bag	CEG-162			12-6	Polyethylene Bag	CEG1116
	8	Carton	See Contrast table(2)			13	Case Assy	CXB3520
	9	Contain Box	See Contrast table(2)
	10	Protector	CHP2243

(2) CONTRAST TABLE

KEH-3930R/X1M/EW and KEH-3900R/X1M/EW are constructed the same except for the following:

Mark No. Symbol and Description		Part No.
		KEH-3930R/X1M/EW	KEH-3900R/X1M/EW
8	Carton	CHG3844	CHG3843
9	Contain Box	CHL3844	CHL3843

- Owner's Manual, Installation Manual

Model	Part No.	Language
KEH-3930R/X1M/EW	CRD3122	English, Spanish, German
KEH-3900R/X1M/EW	CRD3123	French, Italian, Dutch
	CRD3124	English, Spanish, German,
		French, Italian, Dutch

3

KEH-3930R,3900R

2.2 EXTERIOR

4

KEH-3930R,3900R

(1) EXTERIOR SECTION PARTS LIST

Mark No. Description		Part No.	Mark No.		Description	Part No.
1	Screw	BSZ26P050FMC	31		Screw	BPZ20P100FZK
2	Screw	BSZ30P050FMC	32		Button(DETACH)	See Contrast table(2)
3	Screw	BSZ30P200FMC	33		Button(1-6)	CAC6275
4	Cord Assy	CDE6100	34		Button(EJECT)	CAC6277
5	Plug	CKM1314	35		Button(+ -)	See Contrast table(2)
6	Case	CNB2350	36		Button(SELECT)	See Contrast table(2)
7	Earth Plate	CNC8368	37		Button(SOURCE/LOUD)	CAC6494
8	Spacer	CNM4913	38		Spring	CBH2210
9	Insulator	CNM5963	39		Cover	See Contrast table(2)
10	Tuner Amp Unit	CWM6806	40		Keyboard Unit	See Contrast table(2)
11	Screw	BSZ26P080FMC	41		LCD(LCD1801)	CAW1559
12	Screw	BSZ26P160FMC	42		Connector(CN1801)	CKS3580
13	Cord	CDE6158	43		Holder	CNC8517
14	FM/AM Tuner Unit	CWE1500	44		Rubber	CNV5954
15	Holder	CNC7532	45		Lighting Conductor	CNV6274
16	Plug(CN604)	CKM1288	46		Rubber	CNV5968
17	Connector(CN602)	CKS3568	47		Grille Unit	See Contrast table(2)
18	Connector(CN601)	CKS3581	48		Button	CAC4836
19	Antenna Jack(CN402)	CKX1056	49		Spring	CBH1834
20	Panel	CNB2344	50		Spring	CBH1835
21	Holder	CNC5399	51		Spring	CBH2182
22	Holder	CNC6845	52		Bracket	CNC6135
23	Holder	CNC7533	53		Bracket	CNC6791
24	Holder	CNC7996	54		Arm	CNV4692
25	Insulator	CNM5967	55		Arm	CNV4693
26	Heat Sink	CNR1505	56		Arm	CNV4728
27	Holder Unit	CXB2687	57		Panel Unit	See Contrast table(2)
28	•••••		58		Door	See Contrast table(2)
29	Chassis Unit	See Contrast table(2)	59		Spring	CBH1838
30	Detach Grille Assy	See Contrast table(2)	60		Screw	IMS20P030FZK
			61		Cassette Mechanism Module EXK4100
			62		Screw	ISS26P055FUC
			63		Fuse(10A)	CEK1136
			64		IC(IC302)	TDA7384
			65		Transistor(Q904)	2SD2396

(2) CONTRAST TABLE

KEH-3930R/X1M/EW and KEH-3900R/X1M/EW are constructed the same except for the following:

Mark No. Symbol and Description		Part No.
		KEH-3930R/X1M/EW	KEH-3900R/X1M/EW
29	Chassis Unit	CXB4530	CXB4529
30	Detach Grille Assy	CXB4850	CXB4849
32	Button(DETACH)	CAC5929	CAC5789
35	Button(+ -)	CAC6458	CAC6273
36	Button(SELECT)	CAC6459	CAC6276
39	Cover	CNS5662	CNS5661
40	Keyboard Unit	CWM6813	CWM6812
47	Grille Unit	CXB5840	CXB4519
57	Panel Unit	CXB4929	CXB4928
58	Door	CAT2108	CAT2109

5

KEH-3930R,3900R

2.3 CASSETTE MECHANISM MODULE

6

KEH-3930R,3900R

- CASSETTE MECHANISM MODULE SECTION PARTS LIST

Mark No. Description		Part No.	Mark No. Description			Part No.
1	Screw	BSZ20P040FMC	46		Pinch Roller	ENV1518
2	Washer	CBF1037	47		Pinch Holder Unit	EXA1583
3	Washer	CBG1003	48		Pinch Roller	ENV1518
4	Screw	EBA1028	49		Reel Unit	EXA1585
5	Screw	CBA1037	50		Head Base Unit	EXA1586
6	Spring	EBH1531	51		Lever Unit	EXA1587
7	Spring	EBH1624	52		Gear Unit	EXA1588
8	Spring	EBH1625	53		Motor Unit(Service)	EXX1055
9	Spring	EBH1626	54		Washer	HBF-179
10	Spring	EBH1627	55		Screw	CBA1250
11	Spring	EBH1628	56		Bracket	ENC1542
12	Cord	EDD1024
13	Photo-reflector(EGN1)	EGN1004
14	Arm	ENC1526
15	Lever	ENC1530
16	Lever	ENC1531
17	Arm	ENC1532
18	Frame	ENC1533
19	Holder	ENC1534
20	Gear	ENC1535
21	Arm	ENC1536
22	Roller	ENR1040
23	Belt	ENT1027
24	Collar	ENV1508
25	Arm	ENV1539
26	Arm	ENV1540
27	Gear	ENV1544
28	Gear	ENV1547
29	Gear	ENV1548
30	Worm Wheel	ENV1550
31	Lever	ENV1551
32	Flywheel	ENV1554
33	Gathering PCB	ENX1054
34	Switch(S1,S2)	ESG1007
35	Deck Unit	EWM1023
36	Plug(CN251)	CKS3540
37	Gathering PCB	ENX1053
38	Motor Unit(M1)	EXA1491
39	Motor	EXM1028
40	Head Assy(HD1)	EXA1592
41	Motor Unit(M2)	EXA1580
42	Screw	BMZ20P022FMC
43	Bracket	ENC1528
44	Chassis Unit	EXA1582
45	Pinch Holder Unit	EXA1584

7

KEH-3930R,3900R

8

	1		2		3		4

KEH-3930R,3900R

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

ATUNER AMP UNIT

BFM/AM TUNER UNIT

		FM FRONT END		FM/AM 1ST IF 10.7MHz
ANTENNA	CN401	Q3			T51 Q51 CF51				CF52 CF53
	1
JACK	27
	2
				38	39		42		44		46
	ANT1TV	ANT2TV	RFTV	22
						MIXER.IF AMP DET
							IC 1
							PML002A
		Q201 Q204		35
				33 32 45	55	57	CF202	61	74		75
	28
		AM RF									5
			Q202		AM 2ND IF 450kHz						6
						VDD					DI/DO
						VCC
				25					22	10	14
				Q411							PDIO
				LOCL
							VCC

												FM MPX																	Q472
		32		25								24					19
	63				IC 2 PM4008A													6
		34		33		41				44			11	12	13	46
69
70																																		TMUTE
54																COMP 21
78																LDET 18
65
71
EEPROM		4																									VDD Q477
	IC 3																				RDS
		3
BR9010FV																					DECODER
							SDBL						FMSD																			FM/AM
		CE2	CK		CE1						SL			NL1	NL2					20		IC 701
		12	15		16	8				13			2	3		4					PM4009A								24	SWVDD
														NL1
		PCE2	TUNPCK		TUNPCE		SDBW				SL		SD
																						11					12
																						X702
					VDD

PDIO

A

Q474

		TUNER Lch
			Q903
		B.U			VDD
		LDET
	Q476
		SYSPW			68
	61		55	74
		LDET	SYSPW	AVDD	VDD
	51
		TMUTE
	21
		FM/AM
	78		SYSTEM
		NL1	CONTROLLER
	53	SD	IC601(1/2)
	76	SL
	10	SDBW	PE5088A
	14	TUNPCE
	13	TUNPCK
	20	PCE2
	12
		TUNPDO
	11
		TUNPDI
	28
		LOCL

FWD

L-ch

REV

L-ch

M2

SUB M MOTOR

M1 MAIN M

MOTOR

D DECK UNIT

	CN252					CN251
1
			EQ AMP		5	TAPE+B	4
	37		IC251
5	36					7	3
	39		CXA2559Q			Lch
4				17
	CN254					MUTE 9
2	MECHANISM					B.U 20
1	DRIVER			19
			18
	5		IC351		17	STBY 19
	2
	1	PA2020A
	CN255		7	10		LOAD
	8						11
	CN253
		3	1	5		6
	CN256	3	1	5		6
	EGN1
	REEL
	SENSE
				S2		S1
				MODE		LOAD

E REEL SENSE PCB

	ELECTRONIC VOLUME	TUN-L
		B

TUN-L

2

IC301

RL

20

TAPE-L

3

SN761029DL

FL

19

VCK/VDT/VST

15

TDA7384

CN604

POWER AMP

FL+

9

2

B5

FL+

7

11

IC302

FL-

1

B6

FL-

FL

Q350

RL

RL-

19

8

B8

RL-

MUTE

MUTE

STBY

RL+

17

7

B7

RL+

Q352

Q351

22

4

B.U

13

SYSPW

Q901

FUSE

A4

BACK UP

10A

BSENS

A7

ACC

Q905

Q902

B.U

A

ASENS

ACC

11

1

Q906

SYSPW

10

A5

4

VCC

POWER SWITCH

60

66

65

SYSPW

6

IC901

1

3

LOUT

MUTE

RESET

BSENS

ASENS

TPD1018F

C

X1

70

RIMUTE

30

SYSTEM

X601

B.REMOTE

9

RIMUTE

X2

69

TEL MUTE

CONTROLLER

20

B.U

IC601(2/2)

TELIN

64

TEL MUTE

19

STBY

48

STBY

PE5088A

CN901

Q951

11

LD

42

LOADSW

DSENS

KYDT

DPDT

SWVDD

CN602

63

8

9

5

VDD

A

SWVDD

Q650

VDD SWITCH

DSENS					SW5V
	ILL	KYDT	DPDT	SW5V	CN601
8	7	3	4	5
8	7	3	4	5
C KEYBOARD UNIT					CN1801

	50	10
18	DPDT	VDD	VLCD	D
20	KYDT

	KEY MATRIX	LCD DRIVER
		IC1801
		PD6293A

	LCD	XO	XI
		22	23

X901

9

	1		2		3		4

	1		2		3		4

KEH-3930R,3900R

3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)

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

A			A TUNER AMP UNIT	A-a
			ANTENNA JACK
		Large size
A-a	A-b	SCH diagram
			B FM/AM TUNER UNIT		SOUR
A-a	A-b	Guide page			ELEC
					FM(100%) : -15.5dBs
A-a	A-b	Detailed page			AM(30%) : -26dBs
					F
					A
					T

B

C

						MECHANISM
				E
				D
D						CASSETTE	MODULE
	10
		A

RESET

RDS DECODER

SYSTEM CONTROLLER

PE5088A

		NOTE :
		Symbol indicates a resistor.	For resistors and capacitors in the circuit diagrams, their resistance values or
		No differentiation is made between chip resistors and	capacitance values are expressed in codes:
		discrete resistors.
		Symbol indicates a capacitor.	Ex. *Resistors
		No differentiation is made between chip capacitors and	Code	Practical value
		discrete capacitors.	123	12k ohms
		The > mark found on some component parts indicates	103	10k ohms
	TAPE 315Hz(0dB)	the importance of the safety factor of the part.	*Capacitors
		Therefore, when replacing, be sure to use parts of	Code	Practical value
	: -7.9dBs
		identical designation.	103	0.01uF
			101/10	100uF/10V

	1		2		3		4

	5		6		7		8

KEH-3930R,3900R

A-b

A

CE SELECTOR/

RONIC VOLUME

: -15.5dBs M : -26.0dBs PE : -7.9dBs

POWER AMP

3300/16

FM: 7.5dBs

AM : -1.0dBs

TAPE : -2.9dBs

SYSTEM MUTE

8.4V REGULATOR

	OFF MUTE
	5V REGULATOR
	SWD 5V
	ACC SENSE
	POWER SWITCH
	BACK UP SENSE
C KEYBOARD UNIT	TELEPHONE MUTE

FM : 33.5dBs

AM : 25.0dBs

TAPE : 23.1dBs

2

1

4

3

7

8

5

6

13

600 H >CEK1136

12

11

10

B5

B6

B3

B4

B7

B8

B1

B2

A4

A7

A8

A5

TEL MUTE

B

C

D

A 11

	5		6		7		8

A

B

C

D

	1		2		3	4
KEH-3930R,3900R
		1				2
A-a A-b	SOURCE SE	ELECTRONI	FM: -15.5dB	AM : -26.0d	TAPE : -7.9d
						RESET
		-15.5dBs	26dBs
		FM(100%) :	AM(30%) : -
	FM/AM TUNER UNIT
	B
A TUNER AMP UNIT	ANTENNA JACK					RDS DECODER
12	A-a
	1		2		3	4

5

6

					MECHANISM MODULE
7				E
				D
					CASSETTE
8		a-A
		13

SYSTEM CONTROLLER

PE5088A

5

3

6

		NOTE :
		Symbol indicates a resistor.	For resistors and capacitors in the circuit diagrams, their resistance values or
		No differentiation is made between chip resistors and	capacitance values are expressed in codes:
		discrete resistors.
		Symbol indicates a capacitor.	Ex. *Resistors
		No differentiation is made between chip capacitors and	Code	Practical value
		discrete capacitors.	123	12k ohms
		The > mark found on some component parts indicates	103	10k ohms
	TAPE 315Hz(0dB)	the importance of the safety factor of the part.	*Capacitors
		Therefore, when replacing, be sure to use parts of	Code	Practical value
	: -7.9dBs
		identical designation.	103	0.01uF
			101/10	100uF/10V

7

		3930R,3900R-KEH
			8
A-a	A-b

D

C

B

A

D

b-A 14 1

CE SELECTOR/ RONIC VOLUME

1

2

M: -15.5dBs

M : -26.0dBs

APE : -7.9dBs

3

2

4

C		B		A

A-a A-b KEH -3930R,3900R 1

FM: 7.5dBs

AM : -1.0dBs

TAPE : -2.9dBs

SYSTEM MUTE

POWER AMP

3300/16	FM : 33.5dBs
	AM : 25.0dBs
	TAPE : 23.1dBs
	2
	1
	4
	3
	7
	8
	5
	6

8.4V REGULATOR

13

600 H >CEK1136

2

3

B5

B6

B3

B4

B7

B8

B1

B2

4

A4

		5	6		7	8
						KEH-3930R,3900R
					TEL MUTE		b
							A-
A4	A7	A8		A5			A-a
							A
		12	11	10
		REGULATOR5V		POWER SWITCH		TELEPHONEMUTE	B
		OFF MUTE	ACC SENSE	BACK UP SENSE
							C
			SWD 5V
					UNIT
				C	KEYBOARD		D
			3			A-b
							15
		5	6		7	8