Sony mdx c 6500 rx service manual

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2 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. Flexible Circuit Board Repairing - Keep the temperature of the soldering iron around 270 ËšC dur- ing repairing. - Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). - Be careful not to apply force on the conductor when soldering or unsoldering. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 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 PUB- LISHED BY SONY. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. The laser diode in the optical pick-up block may suffer electro- static break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down 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 Never look into the laser diode emission from right avove when checking it for adustment. It is feared that you will lose your sight. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (KMS-241C/J1NP). The laser diode in the optical pick-up block may suffer electro- static break-down easily. When handling it, perform soldering bridge to the laser-tap on the flexible board. Also perform m easures against electrostatic break-down sufficiently before the operation. The flexible board is easily damaged and should be handled with care. laser-tap OPTICAL PICK-UP FLEXIBLE BOARD 1. GENERAL Location of controls ........................................................ 3 Installation ....................................................................... 4 Connections ..................................................................... 5 2. DISASSEMBLY ......................................................... 9 3. ELECTRICAL ADJUSTMENTS Test Mode ........................................................................ 16 MD Section ..................................................................... 16 Tuner Section .................................................................. 16 4. DIAGRAMS 4-1. Block Diagram -“ SERVO Section -“ ............................... 17 4-2. Block Diagram -“ TUNER Section -“ .............................. 18 4-3. Block Diagram -“ MAIN Section -“ ................................. 19 4-4. Block Diagram -“ BUS CONTROL/ POWER SUPPLY Section -“ ........................................... 20 4-5. Note for Printed Wiring Boards and Schematic Diagrams ....................................................... 21 4-6. Printed Wiring Boards -“ SERVO Board (Component Side)/ SENSOR Board -“ ............................................................ 22 4-7. Printed Wiring Board -“ SERVO Board (Conductor Side) -“ .............................. 23 4-8. Schematic Diagram -“ SERVO Board (1/2) -“ ................. 24 4-9. Schematic Diagram -“ SERVO Board (2/2) -“ ................. 25 4-10. Printed Wiring Board -“ MAIN Board (Component Side) -“ .............................. 26 4-11. Printed Wiring Board -“ MAIN Board (Conductor Side) -“ ................................ 27 4-12. Schematic Diagram -“ MAIN Board (1/3) -“ ................... 28 4-13. Schematic Diagram -“ MAIN Board (2/3) -“ ................... 29 4-14. Schematic Diagram -“ MAIN Board (3/3) -“ ................... 30 4-15. Printed Wiring Board -“ SUB Board -“ ............................ 32 4-16. Schematic Diagram -“ SUB Board -“ ............................... 33 4-17. Printed Wiring Board -“ KEY Board -“ ............................ 34 4-18. Schematic Diagram -“ KEY Board -“ .............................. 35 4-19. IC Pin Function Description ........................................... 40 5. EXPLODED VIEWS ................................................ 50 6. ELECTRICAL PARTS LIST ............................... 54 TABLE OF CONTENTS

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3 SECTION 1 GENERAL This section is extracted from instruction manual. Location of controls Refer to the pages listed for details. 1Volume control dial 19 2MENU button 8, 10, 12, 13, 14, 15, 16, 18, 19, 21, 24 3DISC/PRST +/-“ (cursor up/down) buttons 8, 10, 12, 13, 14, 15, 16, 18, 19, 20, 21, 24 During CD/MD playback: Disc change 10, 13 During radio reception: Preset stations select 16 4 Z (eject) button (located on the front side of the unit behind the front panel) 9 5DSPL/PTY (display mode change/ programme type) button 9, 10, 12, 17, 20 6LIST button 12 List-up 13 7SOURCE (TUNER/CD/MD) button 8, 9, 10, 13, 15, 16, 19 8Display window 9OPEN button 7, 9, 26 q;D-BASS button 25 qaSOUND button 23 qsReset button (located on the front side of the unit behind the front panel) 7 qdOFF button* 7, 8, 9qfSEEK/AMS -“/+ (cursor left/right) buttons 8, 10, 12, 14, 16, 18, 19, 21, 23, 24 Automatic Music Sensor 10, 14 Manual Search 10 Seek 15, 16, 18 qgENTER button 8, 10, 12, 13, 14, 15, 16, 18, 19, 20, 21, 24 qhMODE button 19 During CD or MD playback: CD/MD unit select 9, 13 During radio reception: BAND select 15, 16 qjReceptor for the card remote commander qkNumber buttons During radio reception: Preset number select 15, 16, 18, 19 During CD/MD playback: (1)REP 11 (2)SHUF 11 qlAF button 17, 18, 19 w;TA button 18, 19 *Warning when installing in a car without ACC (accessory) position on the ignition key switch Be sure to press (OFF) on the unit for two seconds to turn off the clock display after turning off the engine. When you press (OFF) only momentarily, the clock display does not turn off and this causes battery wear. MDX-C6500RX/C6500R /C6400R DISC+PRST+- DISC-“ PRST-- LISTDSPL AF OFF PTY ENTER MENU SOUND 1 2 3 4 56 SOURCE -SEEK/AMS REP SHUF TA OPEN D-BASS MODE Setting the clock The clock uses a 24-hour digital indication. Example: To set the clock to 10:08 1 Press (MENU), then press either side of (DISC/PRST) repeatedly until CLOCK appears. 1Press (ENTER). The hour indication flashes. 2Press either side of (DISC/PRST) to set the hour. 3Press the (+) side of (SEEK/AMS). The minute indication flashes. 4Press either side of (DISC/PRST) to set the minute. 2 Press (ENTER). The clock starts. After the clock setting is completed, the display returns to normal play mode. Tip You can set the clock automatically with the RDS feature (see page 17). Note In the initial setting, the clock indication appears while the unit is turned off. When the D.INFO mode is set to ON, the time is always displayed (page 24).