CLARION PN-2940S-B
Service Manual

NOTES
* This product includes technology owned by Microsoft Corporation and cannot be used or distributed without a license from MSLGP This unit is used special adjustment jig for measuring. Special data is individually written in ROM IC used for this model. When ROM IC BR93L56RFVM-W(IC7) is replaced, it is necessary to write data. We cannot supply PWB with component parts in principle. When a circuit on PWB has failure, please repair it by component parts base. Parts which are not mentioned in service manual are not supplied. Specifications and design are subject to change without notice for further improvement.

6. Cautions in soldering for chip capacitors Please solder the chip capacitors after pre-heating for replacement because they are very weak to heat. Please do not heat the chip capacitors with a soldering iron directly. 7. Cautions in handling for chip parts. Do not reuse removed chips even when no abnormality is observed in their appearance. Always replace them with new ones. (The chip parts include resistors, capacitors, diodes, transistors, etc). Please make an operation test after replacement. 8. Cautions in handling flexible PWB Before working with a soldering iron, make sure that the iron tip temperature is around 270 . Take care not to apply the iron tip repeatedly(more than three times)to the same patterns. Also take care not to apply the tip with force. 9. Turn the unit OFF during disassembly and parts replacement.

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COMPONENTS
1. Main unit ----------1

Recheck all work before you apply power to the unit. 10. Cautions in checking that the optical pickup lights up. The laser is focused on the disc reflection surface through the lens of the optical pickup. When checking that the laser optical diode lights up, keep your eyes more than 30cms away from the lens. Prolonged viewing of the laser within 30cms may damage your eyesight. 11. Cautions in handling the optical pickup The laser diode of the optical pickup can be damaged by electrostatic charge caused by your clothes and body. Make sure to avoid electrostatic charges on your clothes or body, or discharge static electricity before handling the optical pickup. 11-1. Laser diode The laser diode terminals are shorted for transportation in order to prevent electrostatic damage. After replacement, open the shorted circuit. When removing the pickup from the mechanism, short the terminals by soldering them to prevent this damage. 11-2. Actuator The actuator has a powerful magnetic circuit. If a magnetic material is put close to it. Its characteristics will change. Ensure that no foreign substances enter through the ventilation slots in the cover. 11-3. Cleaning the lens Dust on the optical lens affects performance. To clean the lens, apply a small amount of isopropyl alcohol to lens paper and wipe the lens gently.

To engineers in charge of repair or inspection of our products.
Before repair or inspection, make sure to follow the instructions so that customers and Engineers in charge of repair or inspection can avoid suffering any risk or injury.
1. Use specified parts. The system uses parts with special safety features against fire and voltage. Use only parts with equivalent characteristics when replacing them. The use of unspecified parts shall be regarded as remodeling for which we shall not be liable. The onus of product liability (PL) shall not be our responsibility in cases where an accident or failure is as a result of unspecified parts being used. 2. Place the parts and wiring back in their original positions after replacement or re-wiring. For proper circuit construction, use of insulation tubes, bonding, gaps to PWB, etc, is involved. The wiring connection and routing to the PWB are specially planned using clamps to keep away from heated and high voltage parts. Ensure that they are placed back in their original positions after repair or inspection. If extended damage is caused due to negligence during repair, the legal responsibility shall be with the repairing company. 3. Check for safety after repair. Check that the screws, parts and wires are put back securely in their original position after repair. Ensure for safety reasons there is no possibility of secondary ploblems around the repaired spots. If extended damage is caused due to negligence of repair, the legal responsibility shall be with the repairing company. 4. Caution in removal and making wiring connection to the parts for the automobile. Disconnect the battery terminal after turning the ignition key off. If wrong wiring connections are made with the battery connected, a short circuit and/or fire may occur. If extensive damage is caused due to negligence of repair, the legal responsibility shall be with the repairing company. 5. Cautions in soldering Please do not spread liquid flux in soldering. Please do not wash the soldering point after soldering.

CAUTIONS
This appliance contains a laser system and is classified as a "CLASS 1 LASER PRODUCT". In case of any trouble with this player, please contact your nearest "AUTHORIZED service station". To prevent direct exposure to the laser beam,do not to open the enclosure.
6 CDC RENAULT PART No. UNI T

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M i c r o s o f t Co r p o r a t i o n and cannot be used d i s t r i b u t e d wi t h o u t a l i c e n s e f r o m MS LGP .

WA R N I N G

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DROP L AI SSER T OMB E R

Top view of the unit

AVH

C l ar i o n C o . , L t d M AD E I N C H I N A P A RT NO.

PN-2940S-A, S-B,C,D,E,F

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