Pioneer KEHP-7900-R, KEHP-7910-R, KEHP-7950 Service manual

CONTENTS

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

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

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM...10

4. PCB CONNECTION DIAGRAM ................................32

5. ELECTRICAL PARTS LIST ........................................44

6. ADJUSTMENT..........................................................62

7. GENERAL INFORMATION .......................................63

7.1 DISASSEMBLY ...................................................63

7.2 IC ........................................................................65

7.3 OPERATIONAL FLOW CHART...........................72

8. OPERATIONS AND SPECIFICATIONS.....................73

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 N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936

C PIONEER CORPORATION 2000

K-ZZB. FEB. 2000 Printed in Japan

ORDER NO.

CRT2458

MULTI-CD/DAB CONTROL HIGH POWER CASSETTE PLAYER WITH RDS TUNER

KEH-P7900R X1N/EW

KEH-P7900R/X1N/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:Mech.Description, Disassembly, Adjustment

KEH-P7910R X1N/EE
KEH-P7950 X1N/ES

NOTE:

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

- This service manual does not describe the CD test mode.

For the operations in the CD test mode, refer to the CD player's Service manual.

MULTI-CD/DAB CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER

2

KEH-P7900R,P7910R,P7950

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

13

14

10

8

12

11

9

1

2

6

5

7

4

3

- KEH-P7900R/X1N/EW, KEH-P7910R/X1N/EE

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.

3

KEH-P7900R,P7910R,P7950

1 Cord Assy(EW) CDE6284

Cord Assy(EE) CDE6285

2 Inner Box CHW1754
3 Accessory Assy CEA1917
4 Screw CBA1304

5 Handle CNC5395
6 Bush CNV3930

* 7 Polyethylene Bag E36-615

8 Polyethylene Bag CEG-162
9 Carton(EW) CHG4027

Carton(EE) CHG4028

10 Contain Box(EW) CHL4027

Contain Box(EE) CHL4028
11 Protector CHP2251
12 Protector CHP2252

13-1 Polyethylene Bag CEG1116
13-2 Owner’s Manual(EW) CRD3180

Owner’s Manual(EE) CRD3187
13-3 Owner’s Manual(EW) CRD3181
13-4 Owner’s Manual(EW) CRD3182

13-5 Installation Manual(EW) CRD3183

Installation Manual(EE) CRD3188

* 13-6 Passport(EW) CRY1013
* 13-7 Warranty Card CRY1157
* 13-8 Caution Card CRP1207

* 13-9 Caution Card(EE) CRP1216

14 Case Assy CXB3520

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.

- Owner's Manual, Installation Manual

Model Part No. Language
KEH-P7900R/X1N/EW CRD3180 English, Spanish

CRD3181 German, French
CRD3182 Italian, Dutch
CRD3183 English, Spanish, German, French, Italian, Dutch

- Owner's Manual, Installation Manual

Model Part No. Language
KEH-P7910R/X1N/EE CRD3187 English, Russian

CRD3188 English, Russian

4

KEH-P7900R,P7910R,P7950

- KEH-P7950/X1N/ES

1 Carton CHG4029
2 Cord Assy CDE6231

* 3 Accessory Assy CEA2350

4 Spring CBH1650

* 5 Screw Assy CEA2351

6 Screw CBA1304

* 7 Polyethylene Bag CEG-127

8 Screw CRZ50P090FMC
9 Screw TRZ50P080FMC

* 10 Polyethylene Bag CEG-158

11 Handle CNC5395
12 Bush CNV3930

13 Base Assy CEA2426
* 14 Base CNS5031
* 15 Sheet CZA3371

16 Polyethylene Bag CZE3188
17 Polyethylene Bag CEG-162
18 Battery CEX1006
19 Contain Box CHL4029
20 Protector CHP2251

21 Protector CHP2252
22 Case Assy CXB3520

23 Inner Box CHW1759
24-1 Polyethylene Bag CEG1116
24-2 Owner’s Manual CRD3184

24-3 Owner’s Manual CRD3185
24-4 Installation Manual CRD3186

* 24-5 Caution Card CRP1207
* 24-6 Caution Card CRP1216

25 Remote Control Assy CXB3875

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

- PACKING SECTION PARTS LIST

24

22

19

17

21

20

5

8

12

4

11

10

9

7

6

3

1

2

14

16

15

13

18

25

23

- Owner's Manual, Installation Manual

Model Part No. Language
KEH-P7950/X1N/ES CRD3184 English, Spanish,Portuguese(B)

CRD3185 Chinese, Arabic
CRD3186 English, Spanish, Portuguese(B), Chinese, Arabic

5

KEH-P7900R,P7910R,P7950

2.2 EXTERIOR

KEH-P7900R/X1N/EW

6

KEH-P7900R,P7910R,P7950

1 Screw BMZ30P040FZK
2 Screw BSZ26P050FMC
3 Screw BSZ30P050FMC
4 Screw BSZ30P200FMC
5 Cord Assy CDE6233

6 Cord Assy

See Contrast table(2)

7 Fuse(10A) CEK1136
8 Cap

See Contrast table(2)

9 Cap CNS1472

10 Resistor RS1/2PMF102J

11 Screw ISS26P055FUC
12 Case CNB2597
13 Holder CNC6798
14 Holder

See Contrast table(2)

15 Spacer See Contrast table(2)

16 Insulator CNM6640
17 Panel

See Contrast table(2)

18 Cap CNV2680
19 Tuner Amp Unit

See Contrast table(2)

20 Screw BPZ26P060FMC

21 Screw BSZ26P060FMC
22 Screw BSZ26P160FMC
23 Cord Assy CDE5852
24 Clamper CEF1007
25 Pin Jack(CN351) CKB1028

26 Terminal(CN403) CKF1059
27 Plug(CN901) CKM1278
28 Jack(CN451) CKN1027
29 Plug(CN352) CKS1238
30 Connector(CN751) CKS3124

31 Connector(CN101) CKS3408
32 Plug(CN801) CKS3537
33 Connector(CN251) CKS3568
34 Jack(CN452) CKS4061
35 Antenna Jack(CN401) CKX1056

36 Panel CNB2547
37 Holder

See Contrast table(2)

38 Holder CNC7996
39 Case CNC8138
40 Case CNC8301

41 Holder CNC8696
42 Insulator

See Contrast table(2)

43 Insulator CNM6249
44 Insulator CNM6250
45 Insulator CNM6875

46 Heat Sink CNR1505
47 Holder CNV5375
48 FM/AM Tuner Unit

See Contrast table(2)

49 Holder CNC7532
50 Detach Grille Assy

See Contrast table(2)

51 Screw BPZ20P100FZK
52 Knob CAA1525
53 Button(SOURCE) CAC6331
54 Button(OPEN) CAC6333
55 Button(F,A)

See Contrast table(2)

56 Button(DISP) See Contrast table(2)
57 Button(BAND) See Contrast table(2)
58 Button(E) CAC6464
59 Spring CBH2316
60 Spring CBH2320

61 Cushion CNM6542
62 Spacer CNM6943
63 Cover

See Contrast table(2)

64 Holder CNV6177
65 Keyboard Unit

See Contrast table(2)

66 Connector(CN1901) CKS4205
67 Holder CNC8698
68 Cushion CNM6633
69 Spacer CNM6710
70 Spacer CNM6711

71 Sheet CNM6746
72 Holder CNV6105
73 OEL Unit MXR8004
74 Knob Unit

See Contrast table(2)

75 Grille Unit See Contrast table(2)

76 Button(EJECT) CAC6327
77 Door CAT2109
78 Screw(M2x2) CBA1176
79 Washer CBF1038
80 Spring CBH1838

(1) EXTERIOR SECTION PARTS LIST

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

KEH-P7950/X1N/ES

KEH-P7910R/X1N/EE

7

KEH-P7900R,P7910R,P7950

(2) CONTRAST TABLE
KEH-P7900R/X1N/EW, KEH-P7910R/X1N/EE and KEH-P7950/X1N/ES are constructed the same except for
the following:

81 Spring CBH2310
82 Spring CBH2312
83 Spring CBH2313
84 Spring CBH2393
85 Spring CBL1492

86 Holder CNC8560
87 Cushion CNM5486
88 Spacer CNM6811
89 Panel CNS5728
90 Arm CNV5991

91 Arm CNV5992
92 Arm CNV5993
93 Lever CNV5994
94 Gear CNV5995
95 Gear CNV5996

96 Gear CNV5997
97 Pin CNV6027
98 Panel PCB Unit CWM6720
99 Socket(CN605) CKS3550

100 Connector(CN604) CKS4206

101 Damper Unit CXB5070
102 Holder Unit CXB5736
103 Holder Unit CXB5737
104 Screw IMS20P045FZK
105 Chassis Unit

See Contrast table(2)

106 Cassette Mechanism ModuleEXK4010
107 IC(IC301) PAL005A
108 Transistor(Q921) 2SD2396
109 Chock Coil(L901) CTH1171
110 Remote Control Assy

See Contrast table(2)

111 Battery Cover See Contrast table(2)
112 Cushion See Contrast table(2)
113 Double Sided Tape CNM6811

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

Part No.

Mark No. Symbol and Description KEH-P7900R/X1N/EW KEH-P7910R/X1N/EE KEH-P7950/X1N/ES

6 Cord Assy CDE6284 CDE6285 CDE6231

8 Cap CKX-003 Not used Not used
14 Holder CNC8357 CNC5704 CNC5704
15 Spacer CNM4913 Not used Not used
17 Panel CNS5992 CNS5992 CNS5993

19 Tuner Amp Unit CWM6957 CWM6958 CWM6959
37 Holder CNC7533 Not used Not used
42 Insulator CNM5967 Not used Not used
48 FM/AM Tuner Unit CWE1500 CWE1504 CWE1501
50 Detach Grille Assy CXB4971 CXB4972 CXB4973

55 Button(F,A) CAC6337 CAC6337 CAC6338
56 Button(DISP) CAC6339 CAC6339 CAC6639
57 Button(BAND) CAC6343 CAC6343 CAC6334
63 Cover CNS5737 CNS5737 CNS5738
65 Keyboard Unit CWM6940 CWM6940 CWM6939

74 Knob Unit CXB5350 CXB5350 CXB5351
75 Grille Unit CXB5658 CXB5659 CXB5660

105 Chassis Unit CXB5194 CXB5258 CXB5258
110 Remote Control Assy Not used Not used CXB3875
111 Battery Cover Not used Not used CNS5032

112 Cushion Not used CNM4870 CNM4870

8

KEH-P7900R,P7910R,P7950

2.3 CASSETTE MECHANISM MODULE

9

KEH-P7900R,P7910R,P7950

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

- CASSETTE MECHANISM MODULE SECTION PARTS LIST

1 Screw BSZ20P040FMC
2 Washer CBF1037
3 Washer CBG1003
4 Screw EBA1028
5 Screw EBA1037

6 Spring EBH1531
7 Spring EBH1624
8 Spring EBH1625
9 Spring EBH1626

10 Spring EBH1627

11 Spring EBH1629
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,S3) ESG1007
35 Deck Unit EWM1024

36 Plug(CN251) CKS3540
37 Gathering PCB ENX1053
38 Motor Unit(M1) EXA1490
39 Motor EXM1027
40 Head Assy(HD1) EXA1589

41 Motor Unit(M2) EXA1580
42 Screw BMZ20P022FMC
43 Bracket ENC1528
44 Chassis Unit EXA1582
45 Pinch Holder Unit EXA1584

46 Pinch Roller ENV1518
47 Pinch Holder Unit EXA1583
48 Pinch Roller ENV1518
49 Reel Unit EXA1585
50 Head Base Unit EXA1586

51 Lever Unit EXA1587
52 Gear Unit EXA1588
53 Motor Unit(Service) EXX1055
54 Washer HBF-179
55 •••••

56 •••••
57 Arm ENC1537

10

KEH-P7900R,P7910R,P7950

1

23

4

1234

D

C

B

A

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

B

FM/AM TUNER UNIT

A

TUNER AMP UNIT

CN401

IC 101

CA0008AM

IC 453

NJM2068MD

IC 961

S-80734ANDY-I

RESET

IP-BUS DRIVER

RDS

DECODER

VDD

M

M

CN252

CN254

CN255

CN256

CN253

CN251 CN251

EQ AMP

MECHANISM

DRIVER

1

4

3

9

20
19

8

11

64513

64513

4

3

9

20
19

8

11

5

6

2
1

S3

70µsS1LOAD

S2

MODE

EGN1
REEL

SENSE

M1

MAIN

MOTOR

M2

SUB

MOTOR

REV
L-ch

FWD
L-ch

8710

1

2

5

TAPE+B

VCC

B.U

Lch

L1

MUTE

B.U

stby

mtl

LOAD

LOADSW

MTLSW

STBY

RIMUTE

1718

39

36

37

17

1918

7

5

IC 251

CXA2560Q

IC 351

PA2020A

G

REEL SENSE PCB

F

DECK UNIT

Q101

Q402

X501

Q155

Q501

Q154

Q151 Q153

8

5
1
7
11

ASNB

B–
B+
BL+
BL–

B.U

5

8

11 12

20

24

6

3

1
2

7

8

IPPW

RX

TX

4

18

21

6

NL2

ldet

COMP

L-OUT

IC 501

PM4009A

Q3

CF202

X901

VDD
VCC

LOCL

VDD
VCC

ANTENNA

27

28

1

2

Q201 Q204

Q202

T51 Q51 CF51 CF52 CF53

ANT1 TV

ANT2 TV

RF TV

AM RF

EEPROM

IC 3

BR9010FV

MIXER, IF AMP DET

IC 1

PML002A

FM/AM 1ST IF 10.7MHz

AM 2ND IF 450kHz

FM FRONT END

5
6

4
3

35

33

38 42 46

32

4439

45 55 57 61 74 75

71

65

78

54

70

69

63

25 24

19

46131211444134 33

22

IC 2 PM4008A

22 10 14 12 15 16 8 13 2 3

DI/DO

CE2CKCE1

SDBLSLFMSD

NL1

CN101

CN452

CN451

Q401

25

EW, EE

B

21

B

AL

BU

TEL5V

Q102

Q451

EW, EE

IP-BUS

TEL

MIC

11

KEH-P7900R,P7910R,P7950

1

2

34

1

2

34

D

C

B

A

RIMUTE

loadsw

mtlsw

stby

67
64
58
59

reset

11

IPPW

RX

TX

86
85
24

PEE

100

TELSW

10

TEL1OUT

6

IN3_L

Frontout_L

42

10

adpw

22

AVREF

VDD

B.UVDD

B.U

83

DALMON

80

DRELAY

47

16

bsens

93

asens

92

isens

91

dled

50

DRSYS

49

DRSENS

48

TELIN

69

Rearout_L

FLIN
RLIN

SYSPW

11

12

9

7

14

22 4 25

Preout_L

9

X2

15

X1

16

RL–

23

RL+

21

FL–

3

FL+

RL–

TEL

DRSW

ILL

ACC

ALARM

GND

BUP

B.U

B.U

RL+

FL–

BREM

FL+

FL

RL

5

IN4+L

43

IN4_L

44

IN2_L

41

IN1_R

37

ASENBO

25

SL

74

NL1

76

SDBW

51

TUNPCE

99

TUNPCK

97

TUNPDO

98

TUNPDI

94

LOCL

30

SD

38

NL2DT

42

ldet

88

fm/AM

29

tmute

36

IC 203

PML004AF

IC 301

PAL005A

IC 271

PA2028A

ELECTRONIC VOLUME/

SOURCE SELECTOR

POWER AMP

HIGH-OUT

SYSTEM

CONTROLLER

MUTE STBY B.REM

16

18

Q301

Q261

Q351

Q352

Q262

Q983

Q981

Q921

Q923

Q922

IC 1904

PD5536A

IC 1905

PM5002A

IC 1906

PM5003A

IC 1902

PD8063A

5

6

4

8

10

11

3

IC 1901

PD5554A

KEY MATRIX

IC 1903
RS-140

REMOTE CONTROL SENSOR

OPT IN

Q1903

Q1904

Q1907

Q1905

Q1902

Q1901

D1912

D1911

C

KEYBOARD UNIT

D

PANEL PCB UNIT

ILB
SWDVDD

DPDT
KYDT

ENCH
ENCL

7

9

8

7

9

5

3

2

10

6

4

12

11

13

10

2

4

14

9

7

12

11

13

10

2

4

14

9

7

CSENS
DGND

OELB

CVCC

X1901

S1930

S602

34

5

4
1

14 97 32

33

11

13

Q913

Q911

Q931

Q932

Q681

Q683

Q951

Q682

Q601

IC 681

TPD1018F

DFS

B.U

SYS+B

B.U

X601

SYSPW

A

4

1

1

4

2

1

6

5

3

7

8

9
11
10

12

4

CN901

CN352

CN351

ES

IC 752

NJM2068MD

IC 751

NJM2068MD

MIC

Q751

VR751

ASL AMPASL AMP

1

3

1

3

121

2

CN751

CN752

ASLIN

77

TXD

96

SWVDD

1

FLPILM

8

EJTIN

78

ILMPW

20

OELPW

23

RXD

95

RDT1

4

RDT0

3

csens

43

MUTE

28

SAIN

75

MIC751

REM

VDD1

AVCC

ILMD

DPDT
KYDT

XOUT

XIN

R669,700,C685

Q453

Q452

BZ641

ALARM

BUZZER

DFS

ALARM

IC 452

NJM2068MD

IC 451

TC4W66FU

2

6

1

6

1

5

2

EW, EE

ES

Q454

Q455

VDD

Q132

Q133

VDD

VDD

SYSPW

IC 131

BA3834F

Q131

814

17

SYS+B

CN1901CN605 CN604CN801

Q801

Q805

Q802

Q852

Q851

VDD

VDD

Q804

Q803

IC 851

NJM2360M

16

ILB

SWVDD

55

66

88

EJILP

EJILM

EJSW

OELB

DPDT

KYDT

RDT1
RDT0

CSENS

DGND

A

Q1908

TUNPCE2

32

E

MIC PCB

ES

ES

EW, EE

EW, EE

EE, ES

EW

EW, EE

IC 601 (1/2)
PE5100A(EW,EE)
PE5101A(ES)

SYSTEM

CONTROLLER

IC 601 (1/2)
PE5100A(EW,EE)
PE5101A(ES)

EJECT

BACK UP
GND

ALARM

ACC

ILLUMI

DOOR
SW

MUTE

RL­RL+
FL­FL+

B.REMOTE

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”.

12

KEH-P7900R,P7910R,P7950

1

23

4

1234

D

C

B

A

A-a A-b

A-a

A-b

A-b

A-a

Large size

SCH diagram

Guide page

Detailed page

A

A-a

E

AM(30%):-26dBs
FM(100%):-15.5dBs

AM(30%):-30dBs
FM(100%):-19.5dBs

EW,EE

ES

TAPE:-9dBs

IP-BUS:+2.2dBs

200mA

D

PANEL PCB UNIT

C

CN1901

KEYBOARD UNIT

B

FM/AM TUNER UNIT

E

MIC PCB

F

CN251

Sy
No
dis

NOTE :

Sy
No
dis

>

TEL

MIC

R161
R162
R163
R164
C161
C162

EW
1R6K
1R6K
2R7K
2R7K
R012
R012

ES
2R7K
2R7K
1R6K
1R6K
R018
R018

13

KEH-P7900R,P7910R,P7950

5

6

78

5

6

78

D

C

B

A

A-b

A

AM(30%):-27dBs
FM(100%):-16.5dBs
AM(30%):-31dBs
FM(100%):-20.5dBs
IP-BUS:+2.2dBs
TAPE:-9dBs

(EW, EE)

(ES)

AM(30%):-7.9dBs
FM(100%):+2.6dBs
AM(30%):-1.9dBs
FM(100%):+6.6dBs

(ES)

(EW,EE)

IP-BUS:+7.3dBs
TAPE:-5.9dBs
IP-BUS:+9.3dBs
TAPE:-3.9dBs

(EW,EE)

(ES)

(EW,EE)

AM(30%):-0.4dBs
FM(100%):+10.1dBs
IP-BUS:+14.8dBs
TAPE:+1.6dBs

(ES)

AM(30%):-2.66dBs
FM(100%):+5.84dBs
IP-BUS:+8.54dBs
TAPE:-4.66dBs

(EW,EE)

AM(30%):+18.1dBs
FM(100%):+28.6dBs
IP-BUS:+33.3dBs
TAPE:+20.1dBs

(ES)

AM(30%):+24.1dBs
FM(100%):+32.6dBs
IP-BUS:+35.3dBs
TAPE:+22.1dBs

(EW,EE)

DFSSW

600mH

HIGH-OUT

A

TUNER AMP UNIT

BACK UP
GND
ILLUMI
B.REMOTE
ACC
ALARM(ES)
DOOR SW(ES)
MUTE
RL+
FL+

FL­RR+
FR+
RR­FR-

RL-

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.

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

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.

R913

EW,EE
7R5K

ES
6R2K

R351
R352
R353
R354
C351
C352
C353
C354

EW,EE
820
820
820
820
10/16
10/16
10/16
10/16

ES
82
82
82
82
10/35
10/35
10/35
10/35

DSENSE

14

KEH-P7900R,P7910R,P7950

1

23

4

1234

D

C

B

A

AM(30%):-26dBs

FM(100%):-15.5dBs

AM(30%):-30dBs

FM(100%):-19.5dBs

EW,EE

ES

IP-BUS:+2.2dBs

AM(30%):-27dBs

FM(100%):-16.5dBs

AM(30%):-31dBs

FM(100%):-20.5dBs

IP-BUS:+2.2dBs

TAPE:-9dBs

(EW, EE)

(ES)

200mA

E

MIC PCB

Symbol indicates a resistor.

No differentiation is made betw

discrete resistors.

NOTE :

Symbol indicates a capacitor.

No differentiation is made betw

discrete capacitors.

>

TEL

MIC

R161

R162

R163

R164

C161

C162

EW

1R6K

1R6K

2R7K

2R7K

R012

R012

ES

2R7K

2R7K

1R6K

1R6K

R018

R018

A-a

A-a

A-b

E

1

2

15

KEH-P7900R,P7910R,P7950

5

6

78

5

6

78

D

C

B

A

A-a

A-a

A-b

TAPE:-9dBs

D

PANEL PCB UNIT

C

CN1901

KEYBOARD UNIT

B

FM/AM TUNER UNIT

F

CN251

DSENSE

3

16

1

23

4

1234

D

C

B

A

A-a

A-b

A-b

KEH-P7900R,P7910R,P7950

AM(30%):-7.9dBs

FM(100%):+2.6dBs

AM(30%):-1.9dBs

FM(100%):+6.6dBs

(ES)

(EW,EE)

IP-BUS:+7.3dBs

TAPE:-5.9dBs

IP-BUS:+9.3dBs

TAPE:-3.9dBs

(EW,EE)

(ES)

(EW,EE)

AM(30%):-0.4dBs

FM(100%):+10.1dBs

IP-BUS:+14.8dBs

TAPE:+1.6dBs

(ES)

AM(30%):-2.66dBs

FM(100%):+5.84dBs

IP-BUS:+8.54dBs

TAPE:-4.66dBs

(EW,EE)

HIGH-OUT

A

TUNER AMP UNIT

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.

R351

R352

R353

R354

C351

C352

C353

C354

EW,EE

820

820

820

820

10/16

10/16

10/16

10/16

ES82828282

10/35

10/35

10/35

10/35

1

2

17

5

6

78

5

6

78

D

C

B

A

A-b

A-a

A-b

KEH-P7900R,P7910R,P7950

AM(30%):+18.1dBs

FM(100%):+28.6dBs

IP-BUS:+33.3dBs

TAPE:+20.1dBs

(ES)

AM(30%):+24.1dBs

FM(100%):+32.6dBs

IP-BUS:+35.3dBs

TAPE:+22.1dBs

(EW,EE)

DFSSW

600mH

BACK UP

GND

ILLUMI

B.REMOTE

ACC

ALARM(ES)

DOOR SW(ES)

MUTE

RL+

FL+

FL-

RR+

FR+

RR-

FR-

RL-

R913

EW,EE

7R5K

ES

6R2K

3

18

KEH-P7900R,P7910R,P7950

1

23

4

1234

D

C

B

A

B

3.3 FM/AM TUNER UNIT(KEH-P7900R/X1N/EW)

KV1410(23)

KV1410(23)

Mark
None
F0
F65
F125
A0
A74
A125

Band
–
FM
FM
FM
AM
AM
AM

Input Level
–
0dBf
65dBf
125dBf
0dBµ
74dBµ
125dBµ

DAN217U

DAN217U

FM/AM TUNER UNIT

B

A

19

KEH-P7900R,P7910R,P7950

5

6

78

5

6

78

D

C

B

A

B

KV1410(23)

20

KEH-P7900R,P7910R,P7950

1

23

4

1234

D

C

B

A

B

3.4 FM/AM TUNER UNIT(KEH-P7910R/X1N/EE)

KV1410(23)

Mark
None
F0
F65
F125
A0
A74
A125

Band
–
FM
FM
FM
AM
AM
AM

Input Level
–
0dBf
65dBf
125dBf
0dBµ
74dBµ
125dBµ

DAN217U

DAN217U

C29

C26

4700P

4700P

0R0

C30

12P

R23

D7

1SS390

R5 470

C34

C27

4700P

4700P

D8

1SS390

R5 470

R24 470

C13

27P

C925

4700P

D901

1SS390

C903

27P

R901
4R7K

4P

0R0

C9

22P

0R0

C33
1

56P

FM/AM TUNER UNIT

B

A

21

KEH-P7900R,P7910R,P7950

5

6

78

5

6

78

D

C

B

A

B

KV1410(23)

C925

4700P

D901

1SS390

C903

27P

7K

R910

0R0

22

KEH-P7900R,P7910R,P7950

1

23

4

1234

D

C

B

A

3.5 FM/AM TUNER UNIT(KEH-P7950/X1N/ES)

KV1410(23)

Mark
None
F0
F65
F125
A0
A74
A125

Band
–
FM
FM
FM
AM
AM
AM

Input Level
–
0dBf
65dBf
125dBf
0dBµ
74dBµ
125dBµ

DAN217U

DAN217U

FM/AM TUNER UNIT

B

A

B

23

KEH-P7900R,P7910R,P7950

5

6

78

5

6

78

D

C

B

A

KV1410(23)

B

24

KEH-P7900R,P7910R,P7950

1

23

4

1234

D

C

B

A

3.6 KEYBOARD UNIT(KEH-P7900R/X1N/EW, KEH-P7910R/X1N/EE)

OE

ENT

DISP

OPEN

TA

EQ+

EQ-

SOURCE

1

23

4

5

6

PT

TX(RT)

AUDIO

BAND

FUNC

CN604

D

C