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Pioneer KEH-M8027ZT Service Manual
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Pioneer KEH-M8027ZT Service Manual

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3 7 63 1515 0
Service
Manual
AUDIO SYSTEM HEAD UNIT
KEH-M8027
KEH-M8127
VEHICLE
DESTINATION
CAMRY
MIDDLE EAST
CAMRY
MIDDLE EAST
TE
- This service manual should be used together with the manual(s) listed below.
L 13942296513
For the parts numbers, adjustments, etc. which are not shown in this manual, refer to the following
manual(s).
Model No.
CX-1011
- Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.
"Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.
www
For details, refer to "Important symbols for good services".
.
PIONEER CORPORATION
PIONEER ELECTRONICS (USA) INC.
PIONEER EUROPE NV
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER CORPORATION 2002
http://www.xiaoyu163.com
PRODUCED AFTER
August 2002
August 2002
Order No. Mech. Module
CRT2406
3L
x
ao
u163
y
i
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
http://www.xiaoyu163.com
2 9
8
TOYOTA
ZT
ZT
XN/ES
PART No.
86120-YC270
86120-YC280
Q Q
3
6 7
1 3
1 5
Remarks
Cassette Mech. Module:Mech.Description, Disassembly, Adjustment
co
.
9 4
2 8
ORDER NO.
CRT2842
XN/ES
ID No.
PIONEER MODEL No.
P7406
KEH-M8027ZT/XN/ES
P7407
KEH-M8127ZT/XN/ES
0 5
8
2 9
9 4
2 8
m
K-ZZB. JUNE 2002 Printed in Japan
9 9
9 9

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Summary of Contents for Pioneer KEH-M8027ZT

  • 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 2002 K-ZZB. JUNE 2002 Printed in Japan http://www.xiaoyu163.com...

  • Page 2: Safety Information

    By following the instructions in this manual, be sure to apply the prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed ones should be used. KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 3: Table Of Contents

    7.1.2 ..41 CONNECTOR FUNCTION DESCRIPTION 4. PCB CONNECTION DIAGRAM ........22 7.2 PARTS ..............42 5. ELECTRICAL PARTS LIST ........29 7.2.1 IC..............42 6. ADJUSTMENT............34 7.2.2 DISPLAY ............45 7.3 OPERATIONAL FLOW CHART ......46 7.4 CLEANING ............47 8. OPERATIONS............34 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 4: Specifications

    IF interference ..........64dB or more Image interference........35dB or more AM tuner Frequency...........531–1602 kMHz AGC sens............20dBuV ±7dB S/N 20dB usable sens.........35dBuV or less IF interference ..........40dB or more Image interference........45dB or more Distortion(30% MOD.) ........1.5% or less u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 5: Exploded Views And Parts List

    - PACKING SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Polyethylene Bag CEG1042 5 Protector CHP2543 2 Contain Box(M8027ZT) CHL4669 6 Protector CHP2542 Contain Box(M8127ZT) CHL4670 7 Cover CEG1057 3 Protector CHP2545 u163 4 Protector CHP2544 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 6 3 7 63 1515 0 2.2 EXTERIOR L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 7 58 Holder CNV6976 27 Heat Sink CNR1613 59 Holder CNV7285 28 Main Unit(M8027ZT) CWM8358 60 IC(IC201) TDA7384 Main Unit(M8127ZT) CWM8360 29 Screw BMZ30P060FMC 30 Screw(M3x8) CBA1339 31 Plug(CN402) CKM1221 32 Connector(CN401) CKM1222 33 Connector(CN701) CKS3568 34 Connector(CN601) CKS4557 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 8: Http://Www.xiaoyu163.Com 6

    3 7 63 1515 0 2.2 CASSETTE MECHANISM MODULE For grease application, refer to the service manual for CX-1011 (CRT2406). L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 9 35 Deck Unit EWM1033 36 Plug(CN251) CKS3540 37 Gathering PCB ENX1067 38 Motor Unit(M1) EXA1491 39 Motor EXM1028 40 Head Assy(HD1) EXA1639 41 ••••• 42 Screw BMZ20P022FMC 43 Bracket ENC1558 44 Chassis Unit EXA1615 u163 45 Pinch Holder Unit EXA1608 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 10: Block Diagram And Schematic Diagram

    STBY MOTOR STBY SYSPW LOAD CSLOAD CSLOAD CN253 LCDPW POWER ILMPW ENC1M CN256 ENC1P Q101 REEL 24 25 SENSE S101 S103 S102 LOAD 70µs MODE SENSOR UNIT u163 ILL 10V Q761 LCD 8V Q752 Q751 Q762 Q753 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 11: Main Unit

    MAIN VOLUME ENC1P VR901 POWER POWER ENC1M ENC1M ENC1P ENC1P MODE SELECTOR VR902 MODE MODE ENC2M ENC2M ENC2P ENC2P KEY MATRIX KEY DATA IC 901 LC75853NE CSEJ u163 LCD DATA S914 LCD DRIVER EJECT ILL+B IL+B D901-D931 LCDBL BL+B KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 12 No differentiation is made between chip capacitors and 0.022 R022 u163 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. KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 13 3 7 63 1515 0 MAIN UNIT FM(30%):+12.6dBs AM(30%):+13.3dBs TAPE:+26.3dBs CD:+33.1dBs E-VOL FM(30%):-12.9dBs AM(30%):-12.7dBs TAPE: +0.3dBs CD: +7.1dBs LAN MUTE BUS IC > L 13942296513 ACC SENSE B.UP SENSE ILM SENSE u163 TAPE:-8.4dBs (400Hz 200nWb/m) CN251 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 14 3 7 63 1515 0 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 15 3 7 63 1515 0 L 13942296513 CN901 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 16 3 7 63 1515 0 CD:+8.2dBs (1KHz 0dB) L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 17 3 7 63 1515 0 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 18 3 7 63 1515 0 3.3 KEYBOARD UNIT KEYBOARD UNIT CN601 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 19 3 7 63 1515 0 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 20: Cassette Mechanism Module

    RIN(L) Fwd-R R406 HA12228F RIN(R) MSOUT C405 R03 Fwd-L R404 270K MSDET FIN(R) C404 Vref2 Dolby-B NR R403 MAOUT FIN(L) MSGV(R) NFI(L) HEAD ASSY L 13942296513 EXA1639 TEST TAPE NCT-150 C255 (400Hz, 200nWb/m) C272 CN251 -8.24dBs±1dB CN701 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 21 ESG1007 S101 LOAD R409 C405 R033 270K CN254 L 13942296513 MOTOR UNIT (SUB MOTOR) VCC2 EXA1627 R374 C356 C355 SWITCH POSITION: SENSOR UNIT S101:LOAD SWITCH..EJECT-PLAY S102:MODE SWITCH....ON-OFF S103:70µs SWITCH....ON-OFF CN701 The underlined indicates the switch position. u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 22: Pcb Connection Diagram

    For further information for respective destinations, be sure to check with the schematic dia- gram. 2.Viewpoint of PCB diagrams Capacitor Connector ANTENNA SIDE A SIDE B P.C.Board Chip Part L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 23 3 7 63 1515 0 SIDE A L 13942296513 CN251 u163 FRONT CN901 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 24 3 7 63 1515 0 MAIN UNIT L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 25 3 7 63 1515 0 SIDE B L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 26 4.2 KEYBOARD UNIT 3 7 63 1515 0 SIDE B SIDE A KEYBOARD UNIT KEYBOARD UNIT MODE SELECTOR FM1 2 TAPE CN601 L 13942296513 EJECT MAIN VOLUME SCAN DOWN u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 27 4.3 DECK UNIT 3 7 63 1515 0 DECK UNIT SIDE A CN701 CN251 C271 L 13942296513 SIDE B DECK UNIT HEAD ASSY IC,Q VR302 CN254 CN255 CN253 IC351 CN252 IC251 Q351 Q352 VR301 u163 CN256 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 28 4.4 SENSOR UNIT 3 7 63 1515 0 SENSOR UNIT S101 LOAD S103 70µs S102 MODE L101 CN256 L102 Q101 REEL SENSE CN253 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 29: Electrical Parts List

    RS1/16S334J Diode DAN202K Diode MPG06G-6415G50 RS1/16S0R0J RS1/16S0R0J Diode UDZS16(B) RS1/16S0R0J Diode 1SS355 RS1/16S0R0J Diode HZU8R2(B1) RS1/16S104J Diode UDZS20(B) u163 Diode UDZS20(B) RS1/16S104J RS1/16S104J Diode 1SS355 RS1/16S104J Diode UDZS20(B) RS1/16S103J Diode UDZS9R1(B) RS1/16S103J Choke Coil 600µH CTH1225 Ferri-Inductor LAU150K KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 30 RS1/16S102J RS1/16S681J RS1/16S102J RS1/16S472J RS1/16S102J RS1/16S103J RS1/16S102J RS1/16S393J RS1/16S102J RS1/16S681J RS1/16S102J RS1/16S473J RS1/16S102J RS1/16S103J RS1/16S681J RS1/16S473J RD1/4PU101J RS1/16S0R0J RD1/4PU101J RS1/16S272J RS1PMF680J RS1/16S272J RS1/16S472J u163 RS1/16S162J RS1/16S103J RS1/16S162J RS1/16S102J RS1/16S102J RS1/16S102J RS1/16S102J RS1/16S102J RS1/16S102J RS1/16S103J RS1/16S102J RS1/16S472J RS1/16S102J RD1/4PU471J KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 31 Chip LED SML210FC(KL) Chip LED SML210FC(KL) CKSRYB103K50 Chip LED SML210FC(KL) CEJQ100M16 Chip LED SML210FC(KL) CKSRYB103K50 CKSRYB103K50 u163 Chip LED SML210FC(KL) CEJQ101M10 Chip LED SML210FC(KL) Chip LED SML210FC(KL) CKSRYB102K50 Chip LED SML210FC(KL) CKSRYB103K50 Chip LED SML210FC(KL) CEJQ100M16 CKSRYB103K50 CKSQYB103K50 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 32 RS1/16S820J CKSRYB104K16 RS1/16S101J CKSRYB104K16 RS1/16S820J CKSRYB104K16 RS1/16S101J CKSRYB104K16 RS1/16S820J CKSQYB224K25 RS1/16S101J CKSRYB392K50 RS1/16S101J CKSRYB103K50 RS1/16S101J CKSRYB103K50 RS1/16S101J CKSQYB104K50 RS1/16S101J CKSRYB103K50 RS1/16S101J CKSRYB392K50 RS1/16S101J CKSRYB334K10 RS1/16S101J CKSRYB223K25 RS1/16S101J CKSRYB103K50 RS1/16S101J u163 CKSRYB333K16 RS1/16S6R8J RS1/16S6R8J RS1/16S3R9J RS1/16S3R9J RS1/16S6R8J RS1/16S6R8J RS1/16S3R9J KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 33 ------------------------- Unit Number : EWM1041 Unit Name : Sensor Unit MISCELLANEOUS Switch(LOAD) ESG1007 Switch(MODE) ESG1007 Switch(70µs) ESG1007 Photo-reflector EGN1004 Inductor CTF1546 Inductor CTF1546 Miscellaneous Parts List Motor Unit(MAIN) EXA1491 Motor Unit(SUB) EXA1627 Head Assy EXA1639 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 34: Adjustment

    DECK UNIT VR302 VR301 Pin2 Pin3 CN251 L 13942296513 MAIN UNIT L-CH R-CH Meter(2) DOLBY B NR ADJUSTMENT Test Tape Adjustment Point Adjustment Method (Switch Position) NCT-150 VR301(Lch),VR302(Rch) mV Meter(2) : –8.24dBm(300mV)±1dB (400Hz,200nwb/m) (DOLBY NR Switch : OFF) u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 35 3 7 63 1515 0 6.2 AVC-LAN DIAGNOSIS MODE L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 36 3 7 63 1515 0 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 37 3 7 63 1515 0 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 38 3 7 63 1515 0 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 39: General Information

    Removing the Grille Assy (Fig.2) Grille Assy Release the two latches. Release the four latches. Release the two latches and then remove the Grille Assy. Removing the Frame (Fig.2) Remove the four screws and then remove the Frame. u163 Frame Fig.2 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 40 Remove the two screws. Remove the three screws and then remove the Heat Sink. Remove the screw. Straight the tabs at two locations indicated. Remove the two screws and then remove the Main Unit. Main Unit L 13942296513 Fig.3 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 41: Connector Function Description

    7.1.2 CONNECTOR FUNCTION DESCRIPTION 3 7 63 1515 0 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 42: Parts

    Cassette: Sub motor control output 2 Cassette: Capstan motor control output STBY Cassette: Drive IC control output 54-56 Not used EVSTB E-VOL driver strobe output u163 EVDATA E-VOL driver data output EVCLK E-VOL driver data clock output TEST Test terminal Not used KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 43 A/D converter standard voltage AVCC Connect to VDD PLL data input PLL data output *PD5709B IC's marked by* are MOS type. Be careful in handling them because they are very L 13942296513 liable to be damaged by electrostatic induction. S-81256SGUP-DIM u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 44 Connect to the antenna through an L (LAU type) of 4.7µH.To cope with the power transmission line hums, insert a series circuit consisting of an L (a coil of about 100mH) + R (a resistor of 470 Ω to 2.2kΩ) between the GND. KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 45: Display

    3 7 63 1515 0 7.2.2 DISPLAY - CAW1694 COMMON SEGMENT COM 2 COM 2 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 46: Operational Flow Chart

    16 pin bsens=L asens 17 pin asens=L IPPW←H 19 pin L 13942296513 Starts communication with AVC-LAN swvdd←L 74 pin Source keys operative Source ON SYSPW←H u163 63 pin Completes power-on operation. (After that, proceed to each source operation.) KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 47: Cleaning

    7.4 CLEANING Before shipping out the product, be sure to clean the following portions by using the prescribed cleaning tools: Portions to be cleaned Cleaning tools Cassette heads Pinch rollers Cleaning paper : GED-008 Capstans L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

  • Page 48: Operations

    8. OPERATIONS AND SPECIFICATIONS 8.1 OPERATIONS 3 7 63 1515 0 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 49 3 7 63 1515 0 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...
  • Page 50 3 7 63 1515 0 L 13942296513 u163 KEH-M8027ZT/XN/ES http://www.xiaoyu163.com...

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Keh-m8127zt

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