Sony cdx c 90 service manual
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Extracted text from sony cdx c 90 service manual (Ocr-read)
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Ð 2 Ð surface of objective lens slide base2-axis actuato r 2-axis cover cotton swabs objective lens optical pick-up NOTES ON CLEANING THE OBJECTIVE LENS SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. Notes: Do not force to push the objective lens. Otherwise, the plate spring supporting the objective lens will be bent, causing a deteriorated RF waveform. Never touch anything other than the objective lens. Otherwise, a significant deterioration occurs in the RF waveform. Apply CD lens cleaner B-4 (Part No.:J-2501-000-A) to cotton swabs (narrow type) (Part No.:J-2501-023-A) to be lightly wet. Use a force (about 5 g (0.18 oz)) to make the objective lens in contact with the bottom lightly, and clean the lens by spirals as following below. Replace the cotton swab and repeat this cleaning two or three times. SERVICE NOTE CAUTION Use of controls or adjustments or performance of proce- dures other than those specified herein may result in haz- ardous radiation exposure. Notes on Chip Component Replacement ·Never reuse a disconnected chip component. ·Notice that the minus side of a tantalum capacitor may be dam- aged by heat. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic breakdown and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick- up block. Therefore, when checking the laser diode emission, ob- serve from more than 30 cm away from the objective lens. NOTES ON PICK-UP FLEXIBLE BOARD The pick-up flexible board in this set is secured to the optical pick- up with an adhesive tape. Once the tape is removed, an adhering force becomes weak, and it cannot be reused. Therefore, if the optical pick-up is replaced, replace also the pick- up flexible board with a new one. Dimensions Approx. 178 ´ 50 ´ 184 mm (7 1/8 ´ 2 ´ 7 1/4 in.) (w/h/d) Mounting dimension Approx. 182 ´ 53 ´ 163 mm (7 1/4 ´ 2 1/8 ´ 6 1/2 in.) (w/h/d) Mass Approx. 1.6 kg (3 lb. 8 oz.) Supplied accessories Parts for installation and connections (1 set) Rotary remote RM-X90 (1) Wireless remote RM-X9 (1) Front panel case (1) Design and specifications are subject to change without notice.
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Ð 3 Ð TABLE OF CONTENTS 1. GENERAL Initial settings .......................................................................... 4 Setting the clock ...................................................................... 5 Using the main panel controls ................................................. 6 Basic oprations ........................................................................ 7 Using the rotary remote ........................................................... 8 Using the wireless remote ....................................................... 9 Menu display/Lists ................................................................ 10 Listening to a CD/MD ........................................................... 10 Playing tracks repeatedly ....................................................... 11 Playing tracks in random order ............................................. 12 Creating a program ................................................................ 12 Labeling a CD ....................................................................... 14 Selecting specific tracks for playback ................................... 15 Locating a disc by name ........................................................ 16 Viewing CD TEXT information ............................................ 17 Customizing the CD sound .................................................... 18 Listening to radio ................................................................... 18 Presetting radio stations ......................................................... 19 Specifying monaural/stereo mode ......................................... 20 Receiving only the strongest signals ..................................... 21 Labeling radio stations .......................................................... 22 Selecting a station by name ................................................... 23 Adjusting the sound characteristics ....................................... 23 Setting the set up menu ......................................................... 24 Setting the display menu ....................................................... 25 Setting the function menu ...................................................... 26 Selecting a surround menu .................................................... 26 Storing a surround effect for CDs ......................................... 27 Selecting the listening position .............................................. 28 Adjusting the cut-off frequency of the subwoofer(s) ............ 29 Adjusting the turn-over frequency of the bass and treble ...... 30 Additional information .......................................................... 31 Connections ........................................................................... 33 2. DISASSEMBLY 2-1. Cover (Upper) ................................................................... 35 2-2. Front Panel Assy ............................................................... 35 2-3. Cords ................................................................................. 36 2-4. Rear Panel ......................................................................... 36 2-5. MD Assy ........................................................................... 37 2-6. Audio Board ...................................................................... 37 2-7. Bracket (MD) .................................................................... 38 2-8. Motor Block ...................................................................... 38 2-9. Base Panel Assy ................................................................ 39 2-10. Sub Panel Assy .................................................................. 39 2-11. Chassis (Front) Assy ......................................................... 40 2-12. Main Board ....................................................................... 40 2-13. Chassis (T) Sub Assy ........................................................ 41 2-14. Lever Assy ......................................................................... 41 2-15. Servo Board ....................................................................... 42 2-16. Roller Assy ........................................................................ 42 2-17. Chassis (OP) (O/S) Assy ................................................... 43 2-18. Optical Pick-up Block ....................................................... 43 3. ELECTRICAL ADJUSTMENTS CD Section ............................................................................ 44 Tuner Section ......................................................................... 44 4. DIAGRAMS 4-1. IC Pin Descriptions ........................................................... 47 4-2. Block Diagram ÐCD SectionÐ ........................................... 57 4-3. Block Diagram ÐMain SectionÐ ........................................ 59 4-4. Block Diagram ÐDisplay SectionÐ .................................... 61 4-5. Circuit Boards Location .................................................... 63 4-6. Printed Wiring Boards ÐCD Mechanism SectionÐ ............ 63 4-7. Schematic Diagram ÐCD Mechanism SectionÐ ................ 67 4-8. Schematic Diagram ÐAudio SectionÐ ............................... 72 4-9. Printed Wiring Board ÐAudio SectionÐ ............................ 75 4-10. Schematic Diagram ÐMain Section (1/2)Ð ........................ 77 4-11. Schematic Diagram ÐMain Section (2/2)Ð ........................ 82 4-12. Printed Wiring Boards ÐMain SectionÐ ............................ 87 5. EXPLODED VIEWS 5-1. Case Section ...................................................................... 96 5-2. Front Panel Section ........................................................... 97 5-3. Chassis Section ................................................................. 98 5-4. CD Mechanism Section (1) ............................................... 99 5-5. CD Mechanism Section (2) ............................................. 100 5-6. CD Mechanism Section (3) ............................................. 101 6. ELECTRICAL PARTS LIST ...................................... 102