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PIONEER CORPORATION
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
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
AUDIO SYSTEM HEAD UNIT
KEH-M8227ZT
XN/ES
VEHICLE
DESTINATION
PRODUCED AFTER
PART No.
ID No.
PIONEER MODEL No.
CAMRY
THAILAND
April 2002
86120-YZB22
T7411
KEH-M8227ZT/XN/ES
- 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.
Order No. Mech. Module
Remarks
CX-1011
CRT2406
3L
Cassette Mech. Module:Mech.Description, Disassembly, Adjustment
- Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.
"Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.
For details, refer to "Important symbols for good services".
ORDER NO.
CRT2839
Service
Manual
TOYOTA


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2
KEH-M8227ZT
[ 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:
2. Adjustments
To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable.
In accordance with the procedures or instructions described in this manual, adjustments should be performed.
3. Cleaning
For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning,
proper cleaning should be performed to restore their performances.
5. Lubricants, glues, and replacement parts
Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying
glue may lead to failures or troubles in the product. 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.
4. Shipping mode and shipping screws
To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or
the shipping screws should be installed before shipping out in accordance with this manual, if necessary.
1. Product safety
You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and
should keep the safety during servicing by following the safety instructions described in this manual.
CONTENTS
1. SAFETY INFORMATION ............................................3
2. EXPLODED VIEWS AND PARTS LIST .......................4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .....8
4. PCB CONNECTION DIAGRAM ................................20
5. ELECTRICAL PARTS LIST ........................................27
6. ADJUSTMENT..........................................................32
7. GENERAL INFORMATION .......................................37
7.1 DIAGNOSIS ........................................................37
7.1.1 DISASSEMBLY .........................................37
7.1.2 CONNECTOR FUNCTION DESCRIPTION .......39
7.2 PARTS .................................................................40
7.2.1 IC................................................................40
7.2.2 DISPLAY ....................................................43
7.3 OPERATIONAL FLOW CHART ...........................44
7.4 CLEANING ..........................................................45
8. OPERATIONS AND SPECIFICATIONS.....................46


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KEH-M8227ZT
3
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.


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A
B
4
KEH-M8227ZT
2. EXPLODED VIEWS AND PARTS LIST
2.1 EXTERIOR


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KEH-M8227ZT
5
1 Screw
ASZ26P140FMC
2 Screw
BMZ30P100FMC
3 Screw
BSZ26P050FMC
4 Case
CNB2727
5 Earth
CNC9555
6 Frame
CNC9781
7 Insulator
CNM7401
8 Spacer
CNM7755
9 Heat Sink
CNR1613
10 Tuner Amp Unit
CWM8206
11 Screw
BMZ30P060FMC
12 Screw(M3x8)
CBA1339
13 Plug(CN402)
CKM1221
14 Connector(CN401)
CKM1222
15 Connector(CN701)
CKS3568
16 Connector(CN601)
CKS4557
17 86146-48030(CN501)
CKX1057
18 Holder
CNC9545
19 Holder
CNC9546
20 FM/AM Tuner Unit
CWE1557
21 Holder
CNC8855
22 Terminal(CN403)
VNF1084
23 Terminal(CN404)
VNF1084
24 Chassis Unit
CXB8435
25 Screw
BPZ26P080FMC
26 Button(CD,FM/AM,TAPE) CAC7462
27 Button(SCAN,UP,DOWN) CAC7463
28 Button(EJECT)
CAC7464
29 Button(T.INFO)
CAC7465
30 Button(EQ)
CAC7466
31 Button(1,2)
CAC7467
32 Button(3,4)
CAC7468
33 Button(5,6)
CAC7469
34 Door
CAT2340
35 Spring
CBH1712
36 Grille
CNS6945
37 Lighting Conductor
CNV7040
38 Keyboard Unit
CWM8207
39 LCD(LCD901)
CAW1729
40 Connector(CN901)
CKS4256
41 Holder
CNC9780
42 Sheet
CNM7774
43 Spacer
CNM7857
44 Lighting Conductor
CNV7041
45 Connector
CNV7280
46 Knob Unit
CXB8432
47 Holder Unit
CXB8433
48 Cassette Mechanism ModuleEXK4245
49 Screw
ISS26P055FUC
*
50 Cushion
CNM5281
51 IC(IC201)
TDA7384
52 Transistor(Q471,761)
2SB1185
*
53 Seal
CNM7933
- EXTERIOR SECTION PARTS LIST
Mark No. Description
Part No.
Mark No. Description
Part No.
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.
( In the case of no amount instructions, apply as you think it appropriate.)