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ORDER NO.
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
PIONEER CORPORATION 2008
AVIC-F90BT/XS/UC
CRT4158
FLASH MEMORY MULTIMEDIA AV NAVIGATION RECEIVER
AVIC-F90BT
/XS/UC
AVIC-F900BT/XS/UC
AVIC-F900BT/XS/AU
This service manual should be used together with the following manual(s):
Manufactured under licence from Dolby Laboratories. "Dolby" and the double-D symbol
are trademarks of Dolby Laboratories.
"DTS" and "DTS Digital Out" are registered trademarks of DTS, Inc.
Model No.
Order No.
Mech.Module
Remarks
CX-3212
CRT3896
MS5
DVD Mech. Module : Circuit Descriptions, Mech. Descriptions, Disassembly
For details, refer to "Important Check Points for Good Servicing".
K-ZZZ.-001 MAY 2008 Printed in Japan


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SAFETY INFORMATION
1. Safety Precautions for those who Service this Unit.
· Follow the adjustment steps in the service manual when servicing this unit. When check -
ing or adjusting the emitting power of the laser diode exercise caution in order to get safe, reliable results.
Caution:
1. During repair or tests, minimum distance of 13cm from the focus lens must be kept.
2. During repair or tests, do not view laser beam for 10 seconds or longer.
CAUTION
WARNING
Where in a manufacturer's service documentation, for example in circuit diagrams or lists
of components, a symbol is used to indicate that a specific component shall be replaced only
by the component specified in that documentation for safety reasons, the following symbol shall
be used:
The backlighting lamp of LCD in this equipment contains mercury. Disposal of this material may be
regulated due to environmental considerations according to Local, State or Federal Laws. For disposal
or recycling information, please contact your local authorities or the Electronics Industries
Alliance: www.eiae.org
This product contains mercury. Disposal of this material may be regulated due to environmental considerations.
For disposal or recycling information, please contact your local authorities or the Electronics Industries
Alliance: www.eiae.org.
This product contains certain electrical parts contain chemicals which are known to the State of
California to cause cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 - Proposition 65
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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[Important Check Points for Good Servicing]
In this manual, procedures that must be performed during repairs are marked with the below symbol.
Please be sure to confirm and follow these procedures.
1. Product safety
Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by
following the safety instructions described in this manual.
1 Use specified parts for repair.
Use genuine parts. Be sure to use important parts for safety.
2 Do not perform modifications without proper instructions.
Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as
radio/TV interference and foreign noise.
3 Make sure the soldering of repaired locations is properly performed.
When you solder while repairing, please be sure that there are no cold solder and other debris.
Soldering should be finished with the proper quantity. (Refer to the example)
4 Make sure the screws are tightly fastened.
Please be sure that all screws are fastened, and that there are no loose screws.
5 Make sure each connectors are correctly inserted.
Please be sure that all connectors are inserted, and that there are no imperfect insertion.
6 Make sure the wiring cables are set to their original state.
Please replace the wiring and cables to the original state after repairs.
In addition, be sure that there are no pinched wires, etc.
7 Make sure screws and soldering scraps do not remain inside the product.
Please check that neither solder debris nor screws remain inside the product.
8 There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.
Damaged power cords may lead to fire accidents, so please be sure that there are no damages.
If you find a damaged power cord, please exchange it with a suitable one.
9 There should be no spark traces or similar marks on the power plug.
When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure
connections and suitable usage. Please exchange the power cord if necessary.
a Safe environment should be secured during servicing.
When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries.
Please pay attention to your surroundings and repair safely.
2. Adjustments
To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification.
Adjustments should be performed in accordance with the procedures/instructions described in this manual.
4. Cleaning
For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper
cleaning should be performed to restore their performances.
3. Lubricants, Glues, and Replacement parts
Use grease and adhesives that are equal to the specified substance.
Make sure the proper amount is applied.
5. Shipping mode and Shipping screws
To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be
installed before shipment. Please be sure to follow this method especially if it is specified in this manual.


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CONTENTS
SAFETY INFORMATION..................................................................................................................................... 2
1. SERVICE PRECAUTIONS ............................................................................................................................... 5
1.1 SERVICE PRECAUTIONS ........................................................................................................................ 5
1.2 NOTES ON SOLDERING .......................................................................................................................... 6
2. SPECIFICATIONS ............................................................................................................................................ 7
2.1 SPECIFICATIONS ..................................................................................................................................... 7
2.2 DISC/CONTENT FORMAT ........................................................................................................................ 9
2.3 PANEL FACILITIES.................................................................................................................................. 10
2.4 CONNECTION DIAGRAM ....................................................................................................................... 13
3. BASIC ITEMS FOR SERVICE........................................................................................................................ 15
3.1 CHECK POINTS AFTER SERVICING..................................................................................................... 15
3.2 PCB LOCATIONS .................................................................................................................................... 16
3.3 JIGS LIST ................................................................................................................................................ 17
3.4 CLEANING............................................................................................................................................... 18
4. BLOCK DIAGRAM.......................................................................................................................................... 20
4.1 OVERALL CONNECTION DIAGRAM...................................................................................................... 20
4.2 BLOCK DIAGRAM ................................................................................................................................... 22
4.3 POWER SUPPLY SYSTEM FIGURE ...................................................................................................... 32
5. DIAGNOSIS.................................................................................................................................................... 36
5.1 OPERATIONAL FLOWCHART ................................................................................................................ 36
5.2 INSPECTION METHOD OF PICKUP UNIT............................................................................................. 38
5.3 DIAGNOSIS FLOWCHART ..................................................................................................................... 41
5.4 ERROR CODE LIST ................................................................................................................................ 63
5.5 CONNECTOR FUNCTION DESCRIPTION ............................................................................................. 64
5.6 TROUBLESHOOTING ............................................................................................................................. 65
6. SERVICE MODE ............................................................................................................................................ 69
6.1 TEST MODE ............................................................................................................................................ 69
6.2 DVD TEST MODE ................................................................................................................................... 82
6.3 uBOOT MENU ......................................................................................................................................... 86
6.4 USING THE TEST DISC.......................................................................................................................... 87
7. DISASSEMBLY .............................................................................................................................................. 93
8. EACH SETTING AND ADJUSTMENT ......................................................................................................... 102
8.1 DVD ADJUSTMENT .............................................................................................................................. 102
8.2 AV UNIT ADJUSTMENT ........................................................................................................................ 108
8.3 FLICKER ADJUSTMENT........................................................................................................................110
9. EXPLODED VIEWS AND PARTS LIST.........................................................................................................112
9.1 PACKING ................................................................................................................................................112
9.2 EXTERIOR(1) .........................................................................................................................................114
9.3 EXTERIOR(2) .........................................................................................................................................116
9.4 EXTERIOR(3) .........................................................................................................................................118
9.5 DVD MECHANISM MODULE ................................................................................................................ 120
10. SCHEMATIC DIAGRAM ............................................................................................................................. 122
10.1 AV UNIT(PS/IF SECTION)(GUIDE PAGE) .......................................................................................... 122
10.2 AV UNIT(A/V SECTION)(GUIDE PAGE) ............................................................................................. 128
10.3 AV UNIT(TUNER SECTION) ............................................................................................................... 134
10.4 AV UNIT(SYSTEM uCOM SECTION)(GUIDE PAGE) ......................................................................... 136
10.5 AV UNIT(RGB LED DRIVER SECTION) ............................................................................................. 142
10.6 AV UNIT(IF SECTION)(GUIDE PAGE) ................................................................................................ 144
10.7 KEYBOARD UNIT................................................................................................................................ 150
10.8 DVD CORE UNIT(1/2)(GUIDE PAGE)................................................................................................. 152
10.9 DVD CORE UNIT(2/2) ......................................................................................................................... 158
10.10 COMPOUND UNIT(A) AND COMPOUND UNIT(B) .......................................................................... 160
10.11 WAVEFORMS .................................................................................................................................... 162
11. PCB CONNECTION DIAGRAM.................................................................................................................. 164
11.1 AV UNIT ............................................................................................................................................... 164
11.2 KEYBOARD UNIT ................................................................................................................................ 168
11.3 DVD CORE UNIT ................................................................................................................................. 170
11.4 COMPOUND UNIT(A) AND COMPOUND UNIT(B)............................................................................. 174
12. ELECTRICAL PARTS LIST ........................................................................................................................ 175


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1. SERVICE PRECAUTIONS
1.1 SERVICE PRECAUTIONS
1. 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. Be careful in handling ICs. Some ICs such as MOS type are so fragile that they can be damaged by electrostatic
induction.
3. Before disassembling the unit, be sure to turn off the power. Unplugging and plugging the connectors during
power-on mode may damage the ICs inside the unit.
4. To protect the pickup unit from electrostatic discharge during servicing, take an appropriate treatment
(shorting-solder) by referring to "the DISASSEMBLY" .
5. After replacing the pickup unit, be sure to skew adjustment.
6. During disassembly, be sure to turn the power off since an internal IC might be destroyed when a connector
is plugged or unplugged.
EJECT LOCK MODE for DVD mechanism
In order to change the EJECT LOCK/UNLOCK status of the mechanism, please perform following procedure.
< Procedure >
Top Menu -> AV Source -> Source OFF
Short push area "A" -> Short push area "B" -> Long push area "C" on above screen.
(In order to change the status, follow the same operation.)
The current status can be confirmed by "OFF" character color.
A
B
C
Eject Lock: ON
Eject Lock: OFF
is a trademark of DVD Format/Logo Licensing Corporation.
The Bluetooth word mark and logos are owned by the Bluetooth SIG, Inc.
and any use of such marks by Pioneer Corporation is under license.
Other trademarks and trade names are those of their respective owners.