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Pioneer KEH-M8227ZT Service Manual
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Pioneer KEH-M8227ZT Service Manual

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3 7 63 1515 0
Service
Manual
AUDIO SYSTEM HEAD UNIT
KEH-M8227
VEHICLE
DESTINATION
CAMRY
THAILAND
- This service manual should be used together with the manual(s) listed below.
For the parts numbers, adjustments, etc. which are not shown in this manual, refer to the following
manual(s).
Model No.
TE
L 13942296513
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
April 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
PART No.
86120-YZB22
Remarks
Q Q
3
6 7
1 3
1 5
Cassette Mech. Module:Mech.Description, Disassembly, Adjustment
co
.
9 4
2 8
ORDER NO.
CRT2839
ZT
XN/ES
ID No.
PIONEER MODEL No.
T7411
KEH-M8227ZT/XN/ES
0 5
8
2 9
9 4
2 8
m
K-ZZB. MAR. 2002 Printed in Japan
9 9
9 9

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  • 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. MAR. 2002 Printed in Japan http://www.xiaoyu163.com...

  • Page 2: Table Of Contents

    KEH-M8227ZT 3 7 63 1515 0 [ Important symbols for good services ] In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely. When you find the procedures bearing any of the symbols, be sure to fulfill them: 1.

  • Page 3: Safety Information

    KEH-M8227ZT 3 7 63 1515 0 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.

  • Page 4: Exploded Views And Parts List

    KEH-M8227ZT 3 7 63 1515 0 2. EXPLODED VIEWS AND PARTS LIST 2.1 EXTERIOR L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 5 KEH-M8227ZT 3 7 63 1515 0 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. - For the applying amount of lubricants or glue, follow the instructions in this manual.
  • Page 6 KEH-M8227ZT 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 http://www.xiaoyu163.com...

  • Page 7: Keh-M8227Zt

    KEH-M8227ZT 3 7 63 1515 0 - 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 EXA1607 3 Washer...

  • Page 8: Block Diagram And Schematic Diagram

    KEH-M8227ZT 3 7 63 1515 0 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM FM/AM TUNER UNIT FM/AM 1ST IF 10.7MHz MPXREF 41kHz AMRF T51 Q51 CF51 CF52 CF53 AMDET AMANT L ch IC 2 FM MPX R ch...

  • Page 9: Keh-M8227Zt 9

    KEH-M8227ZT 3 7 63 1515 0 TUNER AMP UNIT RESET IC 681 S-80736AN-D0 XOUT X601 PCE2 FMSD SYSTEM O 8V CONTROLLER Q471 ASENS Q411 PCE1 ASENS IC 601(1/2) PD5746A BSENS Q421 BACK UP Q472 BSENS SYSPW CN401 ISENS Q431...
  • Page 10 KEH-M8227ZT 3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE) 3 7 63 1515 0 Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS LIST”. FM/AM TUNER UNIT FM(30%): -30dBs Large size AM(30%):-12.7dBs SCH diagram...
  • Page 11 KEH-M8227ZT 3 7 63 1515 0 TUNER AMP UNIT FM(30%):+12.6dBs AM(30%):+13.3dBs TAPE:+26.3dBs CD:+33.1dBs FM(30%):-12.9dBs AM(30%):-12.7dBs TAPE: +0.3dBs CD: +7.1dBs FM(30%): -30dBs AM(30%):-21.7dBs TAPE:-11.8dBs CD: +1.0dBs L 13942296513 > ASENSE BSENSE ISENSE u163 TAPE:-8.4dBs CN251 (400Hz 200nWb/m) http://www.xiaoyu163.com...
  • Page 12 KEH-M8227ZT 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 13 KEH-M8227ZT 3 7 63 1515 0 L 13942296513 CN901 u163 http://www.xiaoyu163.com...
  • Page 14 KEH-M8227ZT 3 7 63 1515 0 CD:+8.2dBs (1KHz 0dB) L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 15 KEH-M8227ZT 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 16 KEH-M8227ZT 3.2 KEYBOARD UNIT 3 7 63 1515 0 KEYBOARD UNIT CN601 CSD1066 L 13942296513 T.INFO AM/FM CAW1729 u163 http://www.xiaoyu163.com...
  • Page 17 KEH-M8227ZT 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 18 KEH-M8227ZT 3 7 63 1515 0 3.3 CASSETTE MECHANISM MODULE DECK UNIT CN252 C256 Rev-L Rev-R MUTE NF1(R) 120/70 Vref1 IC251 ser/REP RIN(L) Fwd-R HA12228F RIN(R) MSOUT C405 R033 Fwd-L R404 270K FIN(R) MSDET C404 Vref2 Dolby B NR...
  • Page 19 KEH-M8227ZT 3 7 63 1515 0 M1 MOTOR UNIT (MAIN MOTOR) EXA1491 CN255 CN256 REEL SENSE CN253 Q101 EGN1004 L102 R375 L101 R373 ESG1007 70µs S103 MECHANISM ESG1007 S102 MODE DRIVER load ESG1007 S101 LOAD SENSOR UNIT CN254 L 13942296513...

  • Page 20: Pcb Connection Diagram

    KEH-M8227ZT 4. PCB CONNECTION DIAGRAM 3 7 63 1515 0 4.1 TUNER AMP UNIT NOTE FOR PCB DIAGRAMS 1. The parts mounted on this PCB include all necessary parts for several destination. For further information for respective destinations, be sure...
  • Page 21 KEH-M8227ZT 3 7 63 1515 0 SIDE A L 13942296513 CN251 u163 FRONT CN901 http://www.xiaoyu163.com...
  • Page 22 KEH-M8227ZT 3 7 63 1515 0 TUNER AMP UNIT L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 23 KEH-M8227ZT 3 7 63 1515 0 SIDE B L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 24 KEH-M8227ZT 3 7 63 1515 0 4.2 KEYBOARD UNIT SIDE A SIDE B KEYBOARD UNIT KEYBOARD UNIT MAIN VOLUME DOWN SCAN CN601 EJECT L 13942296513 TAPE AM/FM T.INFO MODE u163 SELECTOR http://www.xiaoyu163.com...
  • Page 25 KEH-M8227ZT 3 7 63 1515 0 4.3 DECK UNIT DECK UNIT CN701 SIDE A CN251 C271 L 13942296513 DECK UNIT SIDE B HEAD ASSY IC,Q VR302 CN254 CN255 CN253 IC351 CN252 IC251 Q351 Q352 VR301 u163 CN256 http://www.xiaoyu163.com...
  • Page 26 KEH-M8227ZT 3 7 63 1515 0 4.4 SENSOR UNIT SENSOR UNIT S101 LOAD S103 70µs S102 MODE L101 CN256 L102 Q101 REEL SENSE L 13942296513 CN253 u163 http://www.xiaoyu163.com...

  • Page 27: Electrical Parts List

    KEH-M8227ZT 3 7 63 1515 0 5. ELECTRICAL PARTS LIST NOTES: - Parts whose parts numbers are omitted are subject to being not supplied. - The part numbers shown below indicate chip components. Chip Resistor RS1/_S___J,RS1/__S___J Chip Capacitor (except for CQS..) CKS.., CCS.., CSZS..
  • Page 28 KEH-M8227ZT 3 7 63 1515 0 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S222J RS1/16S473J RS1/16S103J RS1/16S0R0J RS1/16S103J RS1/16S272J RS1/16S183J RS1/16S272J RS1/16S104J RS1/16S162J RS1/16S332J RS1/16S162J RS1/16S0R0J...
  • Page 29 KEH-M8227ZT 3 7 63 1515 0 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1PMF680J CFTNA224J50 RS1/16S472J CFTNA224J50 RS1/16S103J CKSQYB104K50 RS1/16S102J CEJQ330M10 RS1/16S103J CFTNA105J50 RS1/16S472J CEJQ100M16 RD1/4PU471J...
  • Page 30 KEH-M8227ZT 3 7 63 1515 0 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CKSRYB103K50 RESISTORS CKSQYB221K50 CKSQYB221K50 RS1/16S103J CKSRYB103K50 RS1/16S683J CEJQ1R0M50 RS1/16S820J RS1/16S101J CEJQ100M16 RS1/16S820J CKSRYB103K50...
  • Page 31 KEH-M8227ZT 3 7 63 1515 0 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/8S0R0J Unit Number : EWM1041 RS1/16S153J Unit Name : Sensor Unit RS1/16S332J RS1/16S911J...

  • Page 32: Adjustment

    KEH-M8227ZT 3 7 63 1515 0 6. ADJUSTMENT 6.1 CASSETTE MECHANISM ADJUSTMENT Extension Cord GGD1121 DECK UNIT VR302 VR301 Pin2 Pin3 L 13942296513 CN251 TUNER AMP UNIT L-CH R-CH Meter(2) DOLBY B NR ADJUSTMENT Test Tape Adjustment Point Adjustment Method...
  • Page 33 KEH-M8227ZT 3 7 63 1515 0 6.2 AVC-LAN DIAGNOSIS MODE L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 34 KEH-M8227ZT 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 35 KEH-M8227ZT 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 36 KEH-M8227ZT 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 37: General Information

    KEH-M8227ZT 3 7 63 1515 0 7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 DISASSEMBLY Removing the Case (Fig.1) Case Remove the two screws and then remove the Case. L 13942296513 Fig.1 Removing the Cassette Mechanism Module (Fig.2) Remove the four screws and then remove the Cassette Mechanism Module.
  • Page 38 KEH-M8227ZT 3 7 63 1515 0 Removing the Grille Assy (Fig.3) Grille Assy Remove the two screws. Release the five latches and then remove the Grille Assy. Fig.3 Removing the Frame (Fig.4) Remove the four screws and then remove the Frame.

  • Page 39: Connector Function Description

    KEH-M8227ZT 3 7 63 1515 0 7.1.2 CONNECTOR FUNCTION DESCRIPTION L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 40: Parts

    KEH-M8227ZT 3 7 63 1515 0 7.2 PARTS 7.2.1 IC - Pin Functions (PD5746A) Pin No. Pin Name Function and Operation PLL clock output Not used PCE2 PLL chip enable output FMSD TUNER:SD input CNVSS Connect to GND Not used...
  • Page 41 KEH-M8227ZT 3 7 63 1515 0 Pin No. Pin Name Function and Operation SYSMUTE System mute output SYSPW System power supply control output Not used LANMUTE LAN mute output AMPW AM power output FMPW FM power output 68,69 Not used LOCL TUNER:Local "L"...
  • Page 42 KEH-M8227ZT 3 7 63 1515 0 - FM/AM Tuner Unit FM/AM 1ST IF 10.7MHz MPXREF 41kHz AMRF T51 Q51 CF51 CF52 CF53 AMDET AMANT L ch IC 2 FM MPX R ch AMIN ANT ADJ COMP MIXER, IF AMP, DET.

  • Page 43: Display

    KEH-M8227ZT 3 7 63 1515 0 7.2.2 DISPLAY - CAW1729 SEGMENT COMMON L 13942296513 42(COM3) 42(COM3) 43(COM2) 43(COM2) 44(COM1) 44(COM1) u163 http://www.xiaoyu163.com...

  • Page 44: Operational Flow Chart

    KEH-M8227ZT 3 7 63 1515 0 7.3 OPERATIONAL FLOW CHART POWER ON VCC1=5V 13 pin bsens 16 pin bsens=L asens 17 pin asens=L IPPW←H L 13942296513 19 pin Starts communication with AVC-LAN SWVDPW←L 74 pin Source keys operative Source ON u163 SYSPW←H...

  • Page 45: Cleaning

    KEH-M8227ZT 3 7 63 1515 0 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...

  • Page 46: Operations And Specifications

    KEH-M8227ZT 3 7 63 1515 0 8. OPERATIONS AND SPECIFICATIONS 8.1 OPERATIONS Mode indicator Level indicator L 13942296513 Audio control Mode Power On/Off, Volume This selects the volume and tone adjustment Power On/Off modes. Press the knob to change the mode.
  • Page 47 KEH-M8227ZT 3 7 63 1515 0 Lights up when the traffic information button is switched Lights up when an FM stereo broadcast is being received Band Lights up Preset number Frequency during SCAN or Preset Scan Listening to the Radio Preset Scan AM•FM...
  • Page 48 KEH-M8227ZT 3 7 63 1515 0 Skip play indicator Dolby B NR indicator (Dolby NR B-Type) Tape Direction Tape select indicator (METAL) Repeat play indicator Listening to tape Start of a Track Tape Slot You can skip forward or go back to the start...

  • Page 49: Listening To A Cd

    KEH-M8227ZT 3 7 63 1515 0 Disc mode indicator Random play indicator Disc number Track number Elapsed play time indicator Scan indicator Repeat play indicator Listening to a CD L 13942296513 Repeat Connect a CD changer, and you can operate Repeating the track being played it with this unit.
  • Page 50 KEH-M8227ZT 3 7 63 1515 0 8.2 SPECIFICATIONS Power source....13.2V(10.5V-16.0V allowable) DC FM tuner Backup current ..........1mA or less Frequency...........87.5–108.0 MHz Grounding system........Negative type S/N(MONO) ...........46dB or more Dimensions........180(W)x50(H)x165(D)mm Distortion(30% MOD.) ........1.5% or less Weight..............1.226kg IF interference ..........64dB or more Image interference........35dB or more...

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