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TOYOTA

Service
Manual GM-9127ZT/EW
ORDER NO.
CRT2884
POWER AMPLIFIER



GM-9127ZT
GM-9127 ZT-91/EW
/EW



GM-9227 ZT/E
GM-9227ZT-91 /E

VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No.
LAND CRUISER Europe August 2002 86280-60340 GM-9127ZT/EW
GM-9127ZT-91/EW
LAND CRUISER Any country or area August 2002 86280-60320 GM-9227ZT/E
except for Japan GM-9227ZT-91/E




For details, refer to "Important symbols for good services".



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. JULY 2002 Printed in Japan
1 2 3 4




A 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.




B
[ 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. 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.


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.
C
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.


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.


5. Lubricants, glues, and replacement parts
D 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.




E




F




2 GM-9127ZT/EW
1 2 3 4
5 6 7 8




- Supplementally model is identical to the original except for the addition of following items.
A

Part No.
Description GM-9127ZT-91/EW GM-9227ZT-91/E
Cover CEG1057 CEG1045
Polyethylene Bag Not used CEG1185
Protector CHP2329 Not used
Protector CHP2330 Not used
Carton CHG4144 CHG4865

Contain Box CHL4863 CHL4866 B




NOTE:
- When diagnosing a product, take care of its heated portion.
Power IC (IC801,802,803)
Power Supply IC (IC901,902)
DSP IC (IC201,251)
Heat Sink
IC Holder C




CONTENTS
SAFETY INFORMATION............................................2 7. GENERAL INFORMATION.......................................33
1. SPECIFICATIONS .......................................................3 7.1 DIAGNOSIS .......................................................33
2. EXPLODED VIEWS AND PARTS LIST ......................4 7.1.1 DISASSEMBLY.........................................33
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ....6 7.1.2 CONNECTOR FUNCTION DESCRIPTION ......36 D
4. PCB CONNECTION DIAGRAM................................14 7.2 IC ........................................................................37
5. ELECTRICAL PARTS LIST........................................22 7.3 EXPLANATION...................................................38
6. ADJUSTMENT .........................................................27 7.3.1 OPERATIONAL FLOW CHART .................38
7.3.2 SYSTEM BLOCK DIAGRAM.....................40
8. OPERATIONS ...........................................................41




E
1. SPECIFICATIONS
Power source . . . . . . . . . . . . .13.2