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Service Manual
KEH-P7900R/X1N/EW
ORDER NO.
CRT2458
MULTI-CD/DAB CONTROL HIGH POWER CASSETTE PLAYER WITH RDS TUNER
KEH-P7900R
KEH-P7910R KEH-P7950 1
Model No. CX-1011 Order No. CRT2406
X1N/EW
X1N/EE
MULTI-CD/DAB CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER
X N/ES
- This service manual should be used together with the following manual(s):
Mech. Module Remarks 3L Cassette Mech. Module:Mech.Description, Disassembly, Adjustment
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.
CONTENTS
1. 2. 3. 4. 5. 6. SAFETY INFORMATION ............................................2 EXPLODED VIEWS AND PARTS LIST .......................2 BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...10 PCB CONNECTION DIAGRAM ................................32 ELECTRICAL PARTS LIST ........................................44 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
KEH-P7900R,P7910R,P7950
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
- KEH-P7900R/X1N/EW, KEH-P7910R/X1N/EE
3 5 4
6
2
7 14 12 1 10
8
13 11
9
2
KEH-P7900R,P7910R,P7950
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
Mark No. Description 1 Cord Assy(EW) Cord Assy(EE) 2 Inner Box 3 Accessory Assy 4 Screw 5 6 7 8 9 Handle Bush Polyethylene Bag Polyethylene Bag Carton(EW) Part No. CDE6284 CDE6285 CHW1754 CEA1917 CBA1304 CNC5395 CNV3930 E36-615 CEG-162 CHG4027 CHG4028 CHL4027 CHL4028 CHP2251 CHP2252 Mark No. Description 13-1 Polyethylene Bag 13-2 Owner's Manual(EW) Owner's Manual(EE) 13-3 Owner's Manual(EW) 13-4 Owner's Manual(EW) 13-5 Installation Manual(EW) Installation Manual(EE) 13-6 Passport(EW) 13-7 Warranty Card 13-8 Caution Card 13-9 Caution Card(EE) 14 Case Assy Part No. CEG1116 CRD3180 CRD3187 CRD3181 CRD3182 CRD3183 CRD3188 CRY1013 CRY1157 CRP1207 CRP1216 CXB3520
*
* * * *
Carton(EE) 10 Contain Box(EW) Contain Box(EE) 11 Protector 12 Protector
- Owner's Manual, Installation Manual
Model KEH-P7900R/X1N/EW Part No. CRD3180 CRD3181 CRD3182 CRD3183 Language English, Spanish German, French Italian, Dutch English, Spanish, German, French, Italian, Dutch
- Owner's Manual, Installation Manual
Model KEH-P7910R/X1N/EE Part No. CRD3187 CRD3188 Language English, Russian English, Russian
3
KEH-P7900R,P7910R,P7950
- KEH-P7950/X1N/ES
18 13 14 15 16 7 11 4 12 10 25 22 21 2 23 3 9 6 8 5
19
17
24 20
1
- PACKING SECTION PARTS LIST
Mark No. Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Carton Cord Assy Accessory Assy Spring Screw Assy Screw Polyethylene Bag Screw Screw Polyethylene Bag Handle Bush Base Assy Base Sheet Part No. CHG4029 CDE6231 CEA2350 CBH1650 CEA2351 CBA1304 CEG-127 CRZ50P090FMC TRZ50P080FMC CEG-158 CNC5395 CNV3930 CEA2426 CNS5031 CZA3371 Mark No. Description 16 17 18 19 20 21 22 23 24-1 24-2 24-3 24-4 24-5 24-6 25 Polyethylene Bag Polyethylene Bag Battery Contain Box Protector Protector Case Assy Inner Box Polyethylene Bag Owner's Manual Owner's Manual Installation Manual Caution Card Caution Card Remote Control Assy Part No. CZE3188 CEG-162 CEX1006 CHL4029 CHP2251 CHP2252 CXB3520 CHW1759 CEG1116 CRD3184 CRD3185 CRD3186 CRP1207 CRP1216 CXB3875
* *
*
*
* *
* *
- Owner's Manual, Installation Manual
Model KEH-P7950/X1N/ES Part No. CRD3184 CRD3185 CRD3186 Language English, Spanish,Portuguese(B) Chinese, Arabic English, Spanish, Portuguese(B), Chinese, Arabic
4
KEH-P7900R,P7910R,P7950
2.2 EXTERIOR
KEH-P7900R/X1N/EW
5
KEH-P7900R,P7910R,P7950
KEH-P7950/X1N/ES
KEH-P7910R/X1N/EE
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description 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 31 32 33 34 35 36 37 38 39 40 Screw Screw Screw Screw Cord Assy Cord Assy Fuse(10A) Cap Cap Resistor Screw Case Holder Holder Spacer Insulator Panel Cap Tuner Amp Unit Screw Screw Screw Cord Assy Clamper Pin Jack(CN351) Terminal(CN403) Plug(CN901) Jack(CN451) Plug(CN352) Connector(CN751) Connector(CN101) Plug(CN801) Connector(CN251) Jack(CN452) Antenna Jack(CN401) Panel Holder Holder Case Case Part No. BMZ30P040FZK BSZ26P050FMC BSZ30P050FMC BSZ30P200FMC CDE6233
See Contrast table(2)
Mark No. Description 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 Holder Insulator Insulator Insulator Insulator Heat Sink Holder FM/AM Tuner Unit Holder Detach Grille Assy Screw Knob Button(SOURCE) Button(OPEN) Button(F,A) Button(DISP) Button(BAND) Button(E) Spring Spring Cushion Spacer Cover Holder Keyboard Unit Connector(CN1901) Holder Cushion Spacer Spacer Sheet Holder OEL Unit Knob Unit Grille Unit Button(EJECT) Door Screw(M2x2) Washer Spring
Part No. CNC8696
See Contrast table(2)
CNM6249 CNM6250 CNM6875 CNR1505 CNV5375
See Contrast table(2)
CEK1136
See Contrast table(2)
CNS1472 RS1/2PMF102J ISS26P055FUC CNB2597 CNC6798
See Contrast table(2) See Contrast table(2)
CNC7532
See Contrast table(2)
BPZ20P100FZK CAA1525 CAC6331 CAC6333
See Contrast table(2) See Contrast table(2) See Contrast table(2)
CNM6640
See Contrast table(2)
CNV2680
See Contrast table(2)
BPZ26P060FMC BSZ26P060FMC BSZ26P160FMC CDE5852 CEF1007 CKB1028 CKF1059 CKM1278 CKN1027 CKS1238 CKS3124 CKS3408 CKS3537 CKS3568 CKS4061 CKX1056 CNB2547
See Contrast table(2)
CAC6464 CBH2316 CBH2320 CNM6542 CNM6943
See Contrast table(2)
CNV6177
See Contrast table(2)
CKS4205 CNC8698 CNM6633 CNM6710 CNM6711 CNM6746 CNV6105 MXR8004
See Contrast table(2) See Contrast table(2)
CNC7996 CNC8138 CNC8301
CAC6327 CAT2109 CBA1176 CBF1038 CBH1838
6
KEH-P7900R,P7910R,P7950
Mark No. Description 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 Spring Spring Spring Spring Spring Holder Cushion Spacer Panel Arm Arm Arm Lever Gear Gear
Part No. CBH2310 CBH2312 CBH2313 CBH2393 CBL1492 CNC8560 CNM5486 CNM6811 CNS5728 CNV5991 CNV5992 CNV5993 CNV5994 CNV5995 CNV5996
Mark No. Description 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 Gear Pin Panel PCB Unit Socket(CN605) Connector(CN604) Damper Unit Holder Unit Holder Unit Screw Chassis Unit IC(IC301) Transistor(Q921) Chock Coil(L901) Remote Control Assy
Part No. CNV5997 CNV6027 CWM6720 CKS3550 CKS4206 CXB5070 CXB5736 CXB5737 IMS20P045FZK
See Contrast table(2)
Cassette Mechanism Module EXK4010
PAL005A 2SD2396 CTH1171
See Contrast table(2) See Contrast table(2) See Contrast table(2)
111 Battery Cover 112 Cushion 113 Double Sided Tape
CNM6811
(2) CONTRAST TABLE KEH-P7900R/X1N/EW, KEH-P7910R/X1N/EE and KEH-P7950/X1N/ES are constructed the same except for the following:
Part No. KEH-P7910R/X1N/EE CDE6285 Not used CNC5704 Not used CNS5992 CWM6958 Not used Not used CWE1504 CXB4972 CAC6337 CAC6339 CAC6343 CNS5737 CWM6940 CXB5350 CXB5659 CXB5258 Not used Not used CNM4870
Mark No. 6 8 14 15 17 19 37 42 48 50 55 56 57 63 65 74 75 105 110 111
Symbol and Description Cord Assy Cap Holder Spacer Panel Tuner Amp Unit Holder Insulator FM/AM Tuner Unit Detach Grille Assy Button(F,A) Button(DISP) Button(BAND) Cover Keyboard Unit Knob Unit Grille Unit Chassis Unit Remote Control Assy Battery Cover
KEH-P7900R/X1N/EW CDE6284 CKX-003 CNC8357 CNM4913 CNS5992 CWM6957 CNC7533 CNM5967 CWE1500 CXB4971 CAC6337 CAC6339 CAC6343 CNS5737 CWM6940 CXB5350 CXB5658 CXB5194 Not used Not used Not used
KEH-P7950/X1N/ES CDE6231 Not used CNC5704 Not used CNS5993 CWM6959 Not used Not used CWE1501 CXB4973 CAC6338 CAC6639 CAC6334 CNS5738 CWM6939 CXB5351 CXB5660 CXB5258 CXB3875 CNS5032 CNM4870
112 Cushion
7
KEH-P7900R,P7910R,P7950
2.3 CASSETTE MECHANISM MODULE
8
KEH-P7900R,P7910R,P7950
- CASSETTE MECHANISM MODULE SECTION PARTS LIST
Mark No. Description 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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 Screw Washer Washer Screw Screw Spring Spring Spring Spring Spring Spring Cord Photo-reflector(EGN1) Arm Lever Lever Arm Frame Holder Gear Arm Roller Belt Collar Arm Arm Gear Gear Gear Worm Wheel Lever Flywheel Gathering PCB Switch(S1,S2,S3) Deck Unit Plug(CN251) Gathering PCB Motor Unit(M1) Motor Head Assy(HD1) Motor Unit(M2) Screw Bracket Chassis Unit Pinch Holder Unit Part No. BSZ20P040FMC CBF1037 CBG1003 EBA1028 EBA1037 EBH1531 EBH1624 EBH1625 EBH1626 EBH1627 EBH1629 EDD1024 EGN1004 ENC1526 ENC1530 ENC1531 ENC1532 ENC1533 ENC1534 ENC1535 ENC1536 ENR1040 ENT1027 ENV1508 ENV1539 ENV1540 ENV1544 ENV1547 ENV1548 ENV1550 ENV1551 ENV1554 ENX1054 ESG1007 EWM1024 CKS3540 ENX1053 EXA1490 EXM1027 EXA1589 EXA1580 BMZ20P022FMC ENC1528 EXA1582 EXA1584 Mark No. Description 46 47 48 49 50 51 52 53 54 55 Pinch Roller Pinch Holder Unit Pinch Roller Reel Unit Head Base Unit Lever Unit Gear Unit Motor Unit(Service) Washer ····· Part No. ENV1518 EXA1583 ENV1518 EXA1585 EXA1586 EXA1587 EXA1588 EXX1055 HBF-179
56 ····· 57 Arm
ENC1537
9
1
2
3
4
KEH-P7900R,P7910R,P7950
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
A
3.1 BLOCK DIAGRAM
A
TUNER AMP UNIT
B
ANTENNA 1 2
FM/AM TUNER UNIT
EW, EE FM FRONT END
Q3
CN401
27
FM/AM 1ST IF 10.7MHz
T51 Q51 CF51 CF52 CF53 32 38 39 42 44 46 63 25 24 L-OUT 6 19
Q151 Q155
Q153 Q154
IC 2 PM4008A
34 33 41 44 11 12 13 46
Q501
ANT1 TV
ANT2 TV
22
MIXER, IF AMP DET IC 1 PML002A EW, EE
35 33 45 55 57 CF202 61 74 75
69 70 54 78 65 71
RF TV
RDS DECODER
20 8
24
COMP 21 ldet 18
IC 501 PM4009A
11 12 X501 Q402
Q201 Q204 28
EEPROM AM RF
Q202
NL2 4 3 CK CE1 SDBL SL FMSD NL1
AM 2ND IF 450kHz
VDD VCC
X901
5 6 DI/DO
4
IC 3 BR9010FV
25 Q401
22 10
14
B
VDD VCC
CE2
12 15 16 8 13 2 3
Q101 LOCL Q102 B.U
IP-BUS DRIVER
5 6 ASNB 8 5 1 7 11 B B+ BL+ BL
IC 101 CA0008AM
8
1 2
TX RX IPPW
CN101
IP-BUS MIC CN452 TEL CN451
3 Q451
IC 453 NJM2068MD
7 B AL BU
TEL5V
C
RESET
VDD 2
F
1 FWD L-ch 5 REV L-ch 6
DECK UNIT
CN251
37 36 39
IC 961 S-80734ANDY-I
1
CN252 EQ AMP
5 7
CN251
4 3 4 3 L1 VCC
B
TAPE+B Lch
IC 251 CXA2560Q
18 17
MUTE
9
9
RIMUTE
CN254
M2 SUB MOTOR
MECHANISM DRIVER
5 2 1 18 19 17
B.U stby
M
2 1
20 19 8 11
20 19 8 11
B.U STBY
IC 351 PA2020A
8 7 10
mtl LOAD
D
M1 MAIN MOTOR
M
CN255 CN253
MTLSW LOADSW
3 3
1 1
5 5
4 4
6 6
CN256
EGN1 REEL SENSE S2 S3 S1 MODE 70µs LOAD
G
10 1 2 3
REEL SENSE PCB
4
1
2
3
4
KEH-P7900R,P7910R,P7950
A
Q911 VDD Q601 adpw 22 B.U Q913 B.U
CN901
BUP GND 1 2
36 tmute 29 fm/AM
SYSTEM CONTROLLER
83 AVREF 80 DALMON
BACK UP GND ALARM
DFS
47 6
ES
1 Q931 B.U ACC ALARM
88 42 32 76 38 74 51 99 97 30 98 94 25
IC 601 (1/2) PE5100A(EW,EE) PE5101A(ES) bsens
ldet asens NL2DT TUNPCE2 NL1 SD SL SDBW TUNPCE TUNPCK LOCL TUNPDO TUNPDI ASENBO isens
DRELAY
IC 681 TPD1018F
6
93 92
5
ACC
A
91
Q932 ILL 3
ILLUMI
EW, EE
dled
50
Q681 VDD B.U Q683
ES
DRSW
DRSYS DRSENS
49 48 Q682 Q951
7
DOOR SW
B
TEL 8
TELIN
69
MUTE
86 TX 85 RX 24 IPPW
ELECTRONIC VOLUME/ SOURCE SELECTOR
42 43 44 41 37 6 1 5 IN3_L IN4+L IN4_L IN2_L IN1_R
POWER AMP
10 11 9 Q301 12 FLIN 14 RLIN MUTE 22
IC 203 PML004AF
Frontout_L Rearout_L Preout_L
IC 301 PAL005A
STBY 4 SYSPW
R669,700,C685 BZ641 ALARM BUZZER
DFS ALARM
B.REM 25
RL RL+ FL FL+
23 21 3 5
RL 9 RL+ 11 FL 10 FL+ 12 BREM 4
RLRL+ FLFL+ B.REMOTE
ES
2 6
IC 451 TC4W66FU
2
CN352
FL
EW, EE
1 Q131 Q132 8
1 4
Q352
Q453
IC 452 NJM2068MD
ES
VDD SYSPW
HIGH-OUT
9 7 16
EW, EE
SYS+B
IC 131 BA3834F
17
14
IC 271 PA2028A
18
Q452
100 PEE 6 TEL1OUT
Q133
CN351
RL 4 1 Q921 SYS+B Q983 Q923 B.U SYSPW Q981 Q922 Q261 Q351
SAIN 75 28 15 16 X601
Q454 TEL5V VDD 10 Q455 TELSW MUTE X2 X1
B.U
A
Q262
SYSTEM CONTROLLER
C
IC 601 (1/2) PE5100A(EW,EE) PE5101A(ES)
E
Q751
MIC PCB
CN752
ASL AMP
77 Q851 1 Q852 VDD 1
ASL AMP
3 1
VR751 3
CN751
1 2 1 2
ASLIN
IC 752 NJM2068MD
IC 751 NJM2068MD
MIC
MIC751
IC 851 NJM2360M
6
EW, EE
11
reset
OELPW 23 VDD Q804 Q803
D
CN801
Q802 ILB SWVDD OELB 2 10 4 2 10 4
PANEL PCB UNIT
CN605 CN604
3 5 EJECT S602 2 10 8 11
C
KEYBOARD UNIT
EE, ES
D1911
CN1901
ILB SWDVDD Q1907 OELB Q1908 CVCC
ILMPW 20 Q801 67 RIMUTE 64 stby 58 mtlsw 59 loadsw
EW
Q1903 D1912
Q1901
SWVDD 1 EJTIN 78 Q805 FLPILM 8 EJILM 6 6 EJSW 8 8
Q1904
Q1902
REMOTE CONTROL SENSOR
OPT IN
Q1905
IC 1903 RS-140
11 XOUT
4 1 5 14 97 32
REM VDD1 AVCC ILMD
VDD TXD 96 RXD 95 RDT1 4 RDT0 3
5 DPDT 11 KYDT 12 RDT1 RDT0 14 13
EJILP
5 11 12 14 13 7 8 10 9 DPDT 6 KYDT 5 ENCH 3 ENCL 4
X1901
13 XIN 34 DPDT 33 KYDT
IC 1901 PD5554A
D
KEY MATRIX
csens 43
CSENS DGND
7 9
7 9
4 6
S1930 CSENS 9 DGND 7
IC 1902 PD8063A
IC 1904 PD5536A
IC 1905 PM5002A IC 1906 PM5003A
11 1 2 3 4
1
2
3
4
KEH-P7900R,P7910R,P7950
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
E
MIC PCB
A-a A-b
A-a
IP-BUS:+2.2dBs
Large size SCH diagram
NOTE : Sy No dis Sy No dis
A-a
A-b
Guide page
A-a
A-b
Detailed page
>
TEL
B
MIC
200mA
EW,EE AM(30%):-26dBs FM(100%):-15.5dBs ES AM(30%):-30dBs FM(100%):-19.5dBs
R161 R162 R163 R164 C161 C162
EW 1R6K 1R6K 2R7K 2R7K R012 R012
ES 2R7K 2R7K 1R6K 1R6K R018 R018
C
B
FM/AM TUNER UNIT
TAPE:-9dBs
KEYBOARD UNIT
CN1901
D
F
CN251
C
4
12
A E
1
2
3
D
PANEL PCB UNIT
5
6
7
8
KEH-P7900R,P7910R,P7950
E: 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.
A-b
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.
A
A
TUNER AMP UNIT
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
(ES) AM(30%):-0.4dBs FM(100%):+10.1dBs IP-BUS:+14.8dBs TAPE:+1.6dBs
B
IP-BUS:+7.3dBs (ES) TAPE:-5.9dBs IP-BUS:+9.3dBs (EW,EE) TAPE:-3.9dBs
HIGH-OUT
(EW,EE) AM(30%):-2.66dBs FM(100%):+5.84dBs IP-BUS:+8.54dBs TAPE:-4.66dBs
AM(30%):-27dBs (EW, EE) FM(100%):-16.5dBs AM(30%):-31dBs (ES) FM(100%):-20.5dBs IP-BUS:+2.2dBs TAPE:-9dBs
AM(30%):-7.9dBs (ES) FM(100%):+2.6dBs AM(30%):-1.9dBs (EW,EE) FM(100%):+6.6dBs (EW,EE)
DFSSW
C
EW,EE ES R913 7R5K 6R2K 600mH
BACK UP GND ILLUMI B.REMOTE ACC ALARM(ES) DOOR SW(ES) MUTE RL+ FL+ RLFLRR+ FR+ RRFR-
(EW,EE) AM(30%):+24.1dBs FM(100%):+32.6dBs IP-BUS:+35.3dBs TAPE:+22.1dBs (ES) AM(30%):+18.1dBs FM(100%):+28.6dBs IP-BUS:+33.3dBs TAPE:+20.1dBs
DSENSE
D
5
6
7
A
8
13
B
D A C
14
A-a A-b
1
KEH-P7900R,P7910R,P7950
A-a E
IP-BUS:+2.2dBs
AM(30%):-27dBs (EW, EE) FM(100%):-16.5dBs AM(30%):-31dBs (ES) FM(100%):-20.5dBs IP-BUS:+2.2dBs TAPE:-9dBs
1
R161 R162 R163 R164 C161 C162 EW 1R6K 1R6K 2R7K 2R7K R012 R012 ES 2R7K 2R7K 1R6K 1R6K R018 R018
E
MIC PCB
NOTE : Symbol indicates a resistor. No differentiation is made betw discrete resistors. Symbol indicates a capacitor. No differentiation is made betw discrete capacitors.
2
2
1
3
3
>
TEL
200mA
MIC
4
4
EW,EE AM(30%):-26dBs FM(100%):-15.5dBs ES AM(30%):-30dBs FM(100%):-19.5dBs
2
B
D
FM/AM TUNER UNIT
C D
KEYBOARD UNIT
CN1901
PANEL PCB UNIT
5
6
KEH-P7900R,P7910R,P7950
7
8
A-a A-b
DSENSE
5
6
TAPE:-9dBs
7
A-a
F
CN251
8
15 B C A
3
B
D A C
16
A-a A-b
1
KEH-P7900R,P7910R,P7950
A-b
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.
1
istor. ade between chip resistors and
pacitor. ade between chip capacitors and
A
TUNER AMP UNIT
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
2
(ES) AM(30%):-0.4dBs FM(100%):+10.1dBs IP-BUS:+14.8dBs TAPE:+1.6dBs
2
1
3
HIGH-OUT
(EW,EE) AM(30%):-2.66dBs FM(100%):+5.84dBs IP-BUS:+8.54dBs TAPE:-4.66dBs (EW,EE)
3
IP-BUS:+7.3dBs (ES) TAPE:-5.9dBs IP-BUS:+9.3dBs (EW,EE) TAPE:-3.9dBs
W, EE)
S)
AM(30%):-7.9dBs (ES) FM(100%):+2.6dBs AM(30%):-1.9dBs (EW,EE) FM(100%):+6.6dBs
4
4
2
DFSSW
5
5
EW,EE ES R913 7R5K 6R2K 600mH
BACK UP GND ILLUMI B.REMOTE ACC ALARM(ES) DOOR SW(ES) MUTE RL+ FL+ RLFLRR+ FR+ RRFR-
6
6 B C A
3
(EW,EE) AM(30%):+24.1dBs FM(100%):+32.6dBs IP-BUS:+35.3dBs TAPE:+22.1dBs (ES) AM(30%):+18.1dBs FM(100%):+28.6dBs IP-BUS:+33.3dBs TAPE:+20.1dBs
7
KEH-P7900R,P7910R,P7950
7
A-b
A-a A-b
8
8
17
D
1
2
3
4
KEH-P7900R,P7910R,P7950
3.3 FM/AM TUNER UNIT(KEH-P7900R/X1N/EW)
A
A
B FM/AM TUNER UNIT
Mark None F0 F65 F125 A0 A74 A125 Band FM FM FM AM AM AM Input Level 0dBf 65dBf 125dBf 0dBµ 74dBµ 125dBµ
B
C
KV1410(23)
KV1410(23)
DAN217U
D
18
B
1
2
DAN217U
3
4
5
6
7
8
KEH-P7900R,P7910R,P7950
A
KV1410(23)
B
C
D
5
6
7
B
8
19
1
2
3
4
KEH-P7900R,P7910R,P7950
3.4 FM/AM TUNER UNIT(KEH-P7910R/X1N/EE)
A
A
B FM/AM TUNER UNIT
56P C903 R901 D901 C925 4R7K 27P 4700P 1SS390
Mark None F0 F65 F125 A0 A74 A125
Band FM FM FM AM AM AM
Input Level 0dBf 65dBf 125dBf 0dBµ 74dBµ 125dBµ
470
B
4P
470
R24
R5
C30 12P 0R0 C13 27P C33 1
KV1410(23)
22P
1SS390
R23 0R0 4700P 4700P C29 C26
C9
0R0
1SS390
D7
D8
R5 4700P 4700P C34 C27
C
DAN217U
D
20
B
1
2
DAN217U
3
470
4
5
6
7
8
KEH-P7900R,P7910R,P7950
A
6P C903 901 D901 7K 27P 1SS390
C925
4700P
KV1410(23)
B
R910 0R0
C
D
5
6
7
B
8
21
1
2
3
4
KEH-P7900R,P7910R,P7950
3.5 FM/AM TUNER UNIT(KEH-P7950/X1N/ES)
A
A
B FM/AM TUNER UNIT
Mark None F0 F65 F125 A0 A74 A125 Band FM FM FM AM AM AM Input Level 0dBf 65dBf 125dBf 0dBµ 74dBµ 125dBµ
B
C
KV1410(23)
DAN217U
D
22
B
1 2 3 4
DAN217U
5
6
7
8
KEH-P7900R,P7910R,P7950
A
KV1410(23)
B
C
D
5
6
7
B
8
23
1
2
3
4
KEH-P7900R,P7910R,P7950
3.6 KEYBOARD UNIT(KEH-P7900R/X1N/EW, KEH-P7910R/X1N/EE)
A
D
CN604
DISP
ENT
B
TA
EQ+ SOURCE 1
EQ-
2
3
4
5
6
PT
C
AUDIO
TX(RT)
BAND
FUNC
OPEN
D
OE
24
C
1 2 3 4
5
6
7
8
KEH-P7900R,P7910R,P7950
A
C
KEYBOARD UNIT
DATA ROM
B
KEY / OEL CONTROLLER
C
22k(B)
D
OEL UNIT
MXR8004
5
6
7
C
8
25
1
2
3
4
KEH-P7900R,P7910R,P7950
3.7 KEYBOARD UNIT(KEH-P7950/X1N/ES)
A
D
CN604
DISP
ENT
B
LOUD
EQ+ SOURCE 1
EQ-
2
3
4
5
6
CLOCK
C
AUDIO
PGM
BAND
FUNC
OPEN
D
OE
26
C
1
2
3
4