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Service
Manual
MULTI-CD/DAB CONTROL HIGH POWER CASSETTE PLAYER WITH RDS TUNER
KEH-P7020R
MULTI-CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER
KEH-P7020R
KEH-P7025
This service manual should be used together with the following manual(s):
Model No.
Order No.
CX-1011
CRT2406
NOTE:
Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corpora-
tion.
"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.
Extension cable of cassette mechanism : Jig No. GGD1121
CONTENTS
1. SAFETY INFORMATION . . . . . . . . . . . . . . . . 3
2. EXPLODED VIEWS AND PARTS LIST . . . . . . . . . 4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM . . 14
4. PCB CONNECTION DIAGRAM . . . . . . . . . . . 36
5. ELECTRICAL PARTS LIST . . . . . . . . . . . . . . 44
6. ADJUSTMENT . . . . . . . . . . . . . . . . . . . . 54
For details, refer to "Important symbols for good services".
PIONEER CORPORATION
PIONEER ELECTRONICS (USA) INC.
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 2001
KEH-P7020R/XN/EW
XN/ES
Mech.Module
3L
Cassette Mech. Module:Mech.Description, Disassembly, Adjustment
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
SELECT
XN/EW
Remarks
7. GENERAL INFORMATION . . . . . . . . . . . . . . 56
7.1 DIAGNOSIS . . . . . . . . . . . . . . . . . . . . 56
7.1.1 DISASSEMBRY . . . . . . . . . . . . . . . . 56
7.1.2 CONNECTOR FUNCTION DESCRIPTION . . 58
7.2 IC . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.3 OPERATION FLOW CHART. . . . . . . . . . . . 66
7.4 CLEANING. . . . . . . . . . . . . . . . . . . . . 67
8. OPERATIONS AND SPECIFICATIONS . . . . . . . . 68
ORDER NO.
CRT2817
K-ZZA. DEC.2001 Printed in Japan
2000.printed in Japan
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Summary of Contents for Pioneer KEH-P7020RXN/EW
- Page 1 PIONEER ELECTRONICS (USA) 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 2001 K-ZZA. DEC.2001 Printed in Japan 2000.printed in Japan...
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Page 2: Block Diagram And Schematic Diagram
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM(KEH-P7020R/XN/EW) TUNER AMP UNIT FM/AM TUNER UNIT Q153 Q151 Q155 FM/AM 1ST IF 10.7MHz MPXREF 41kHz CN401 AMRF T51 Q51 CF51 CF52 CF53 AMDET AMANT L ch IC 2 FM MPX Q501 R ch DECODER ANT1 ADJ... - Page 3 RESET CN351 IC 961 S-80735ANDZI Q351 CN352-1 TMUTE Q352 FM/AM Q353 SYSTEM CONTROLLER IC 601(1/2) PD5698B CN352-2 VDD REGULATOR LDET Q911 NL2DT CN901 BACKUP SENSE FUSE BSENS BACK UP SDBW Q931 TUNPCE ASENS TUNPCK ACC SENSE Q932 TUNPCE2 ILL SENSE TUNPDO ISENS ASENBO...
- Page 4 3.2 BLOCK DIAGRAM(KEH-P7025/XN/ES) TUNER AMP UNIT FM/AM TUNER UNIT FM/AM 1ST IF 10.7MHz MPXREF 41kHz CN401 AMRF T51 Q51 CF51 CF52 CF53 AMDET AMANT L ch IC 2 FM MPX R ch ANT1 ADJ COMP MIXER, IF AMP, DET. LDET FMANT RFGND FMRF...
- Page 5 RESET CN351 IC 961 S-80735ANDZI Q351 CN352-1 Q352 Q353 SYSTEM CONTROLLER IC 601(1/2) PD5698B CN352-2 VDD REGULATOR Q911 CN901 BACKUP SENSE FUSE BSENS BACK UP Q931 TUNPCE ASENS TUNPCK ACC SENSE Q932 TUNPCE2 ILL SENSE TUNPDO ISENS ASENBO Q951 TELMUTE TELIN TELEPHONE MUTE 30 29 81...
- Page 6 3.3 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)(KEH-P7020R/XN/EW) Note: When ordering service parts, be sure to refer to " EXPLODED VIEWS AND PARTS LIST" or "ELECTRICAL PARTS LIST". CN251 IP-BUS TAPE:-11.2dBs IP-BUS:+2.2dBs Large size SCH diagram Guide page ELEC Detailed page > HANDSFREE IP-BUS DRIVER CN451...
- Page 7 TUNER AMP UNIT 10K(B) LEVEL INDICATOR ELECTRONIC VOLUME, SOURCE SELECTOR MUTE FM:+14.1dBs AM: +0.6dBs IP-BUS:+14.9dBs TAPE:+1.36dBs REAR R CH MUTE REAR L CH PML009A L CH FM: +6.6dBs R CH AM: -1.9dBs IP-BUS: +9.3dBs TAPE:-4.14dBs FRONT L CH MUTE FRONT FM: -16.5dBs R CH AM: -27.0dBs...
- Page 8 KEH-P7020R...
- Page 9 KEH-P7020R...
- Page 10 KEH-P7020R...
- Page 11 KEH-P7020R...
- Page 12 3.4 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)(KEH-P7025/XN/ES) CN251 IP-BUS TAPE:-11.2dBs IP-BUS:+2.2dBs IP-BUS DRIVER NOTE : Symbol indicates a resistor. Decimal points for resistor No differentiation is made between chip resistors and and capacitor fixed values FM: -20.5dBs discrete resistors. are expressed as : AM: -31.0dBs Symbol indicates a capacitor.
- Page 13 TUNER AMP UNIT 10K(B) LEVEL INDICATOR ELECTRONIC VOLUME, SOURCE SELECTOR MUTE FM:+10.1dBs AM: -0.4dBs IP-BUS:+14.9dBs TAPE:+1.36dBs REAR R CH MUTE REAR L CH PML009A L CH FM: +2.6dBs R CH AM: -7.9dBs IP-BUS: +7.3dBs TAPE:-6.14dBs FRONT L CH MUTE FRONT FM: -20.5dBs R CH AM: -31.0dBs...
- Page 14 KEH-P7020R...
- Page 15 KEH-P7020R...
- Page 16 KEH-P7020R...
- Page 17 KEH-P7020R...
- Page 18 3.5 KEYBOARD UNIT(KEH-P7020R/XN/EW) CN1851 3.3V REGULATOR REMOTE CONTROL SENSOR VOLUME DISP/SCRL TEXT SFEQ ← BAND/ESC KEH-P7020R...
- Page 19 KEYBOARD UNIT FONT ROM KEY CONTROL AND OEL CONTROL OEL UNIT MXS8017 KEH-P7020R...
- Page 20 3.6 KEYBOARD UNIT(KEH-P7025/XN/ES) CN1851 3.3V REGULATOR REMOTE CONTROL SENSOR VOLUME DISP/SCRL PAUSE SFEQ ← BAND/ESC KEH-P7020R...
- Page 21 KEYBOARD UNIT FONT ROM KEY CONTROL AND OEL CONTROL PD8088A OEL UNIT MXS8017 KEH-P7020R...
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Page 22: Cassette Mechanism Module
3.7 CASSETTE MECHANISM MODULE DECK UNIT CN252 C256 Rev-L Rev-R MUTE NF1(R) Vref1 120/70 IC251 ser/REP RIN(L) Fwd-R HA12228F RIN(R) MSOUT C405 R033 Fwd-L R404 270K MSDET FIN(R) C404 Vref2 Dolby-B R403 MAOUT FIN(L) NFI(L) MSGV(R) HEAD ASSY EXA1589 TEST TAPE NCT-150 C255 (400Hz, 200nWb/m) - Page 23 M1 MOTOR UNIT (MAIN MOTOR) EXA1490 CN255 CN256 REEL SENSE CN253 EGN1 EGN1004 R375 R373 70µs ESG1007 MECHANISM MODE ESG1007 DRIVER load S1 LOAD ESG1007 REEL SENSE C405 R033 270K CN254 MOTOR UNIT (SUB MOTOR) VCC2 EXA1580 R374 C356 SWITCHES: REEL SENSE PCB C355 S1:LOAD SWITCH..EJECT-PLAY...
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Page 24: Connector Function Description
7.1.2 CONNECTOR FUNCTION DESCRIPTION KEH-P7020R/XN/EW SUB WOOFER NON-FADING OUTPUT FRONT OUTPUT 8 9 10 11 1 2 3 4 1. BUS+ 7. BL+ 1. GND 9. RL- ANTENNA 2. GND 8. ASENB 2. B.UP 10. FL- 3. GND 9. BR+ 3.