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Service
Manual ORDER NO.
CRT2088
RX300
AUDIO SYSTEM
HEAD UNIT
VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No.
LEXUS RX300 U.S.A. , CANADA February 1998 86120-48050 P1714 KEX-M9086ZT/UC
LEXUS RX300 U.S.A. , CANADA February 1998 86120-48050 P1714 KEX-M9086ZT-91/UC
Manufactured for TOYOTA
by PIONEER ELECTRONIC CORPORATION PUB. NO. CRT2088
KEX-M9086ZT,M9086ZT-91
KEX-M9086ZT/UC, KEX-M9086ZT-91/UC
ID No. P1714
NOTE:
- The KEX-M9086ZT-91/UC is supplementary genuine part for a TOYOTA vehicle, and a Pioneer product for recycling
stock.
- As for the structure and electrical system, there is no difference between the KEX-M9086ZT/UC and KEX-M9086ZT-
91/UC.
- Supplementally model is identical to the original except for the addition of following items.
Description Part No.
Carton CHA1721
Contain Box CHD1721
Cover CEG1045
Polyethylene Bag CEG-162
- Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.
"Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.
- See the separate manual CX-529 (CRT1507) for the cassette mechanism description.
- The cassette mechanism employed in this model is one of 2L mechanism description.
- KEX-M9086ZT/UC has adopted AVC-LAN.
CONTENTS
1. SAFETY INFORMATION ............................................3 7. GENERAL INFORMATION .......................................35
2. EXPLODED VIEWS AND PARTS LIST .......................4 7.1 IC ........................................................................35
3. SCHEMATIC DIAGRAM .............................................8 7.2 DIAGNOSIS .......................................................38
4. PCB CONNECTION DIAGRAM ................................18 7.2.1 DIAGNOSIS MODE .................................38
5. ELECTRICAL PARTS LIST ........................................26 7.2.2 DISASSEMBLY ........................................42
6. ADJUSTMENT..........................................................32 7.2.3 CONNECTOR FUNCTION DESCRIPTION ..43
7.3 EXPLANATION..................................................44
7.3.1 BLOCK DIAGRAM ...................................44
7.3.2 SYSTEM BLOCK DIAGRAM ...................45
8. OPERATIONS AND SPECIFICATIONS.....................46
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KEX-M9086ZT,M9086ZT-91
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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KEX-M9086ZT,M9086ZT-91
2. EXPLODED VIEWS AND PARTS LIST
2.1 EXTERIOR
Fig. 1
4
KEX-M9086ZT,M9086ZT-91
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.
- EXTERIOR SECTION PARTS LIST
Mark No. Description Part No.
1 Screw BMZ26P050FMC
2 Screw BMZ30P060FMC
3 Case CNB2187
* 4 Earth CNC6739
5 Spacer CNM4305
6 Insulator CNM5314
7 Main Unit CWM5423
8 Transistor(Q813) 2SB1185
9 Screw CBA1393
10 Connector(CN801) CKM1222
11 Connector(CN802) CKM1238
12 Connector(CN702) CKS1730
13 Antenna Jack(CN501) CKX1057
14 Antenna Jack(CN502) CKX1058
15 Holder CNC2218
16 Holder CNC7149
17 Tuner Unit CWE1455
18 Holder CNC6774
19 Chassis Unit CXB1408
20 Cassette Mechanism Module EXK3240
21 Screw IMS30P050FMC
22 Nonwoven Fabric CNM5798
5
KEX-M9086ZT,M9086ZT-91
2.2 CASSETTE MECHANISM MODULE
Fig. 2
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KEX-M9086ZT,M9086ZT-91
- CASSETTE MECHANISM MODULE SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 Screw BSZ20P040FMC 46 Pinch Roller Unit EXA1473
2 Washer CBF1037 47 Reel Unit EXA1484
3 Washer CBF1038 48 Head Base Unit EXA1434
4 Washer CBG1003 49 Lever Unit EXA1438
5 Deck Unit EWM1008 50 Gear Unit EXA1436
6 Screw(M2