Sony mdx c 7890 r service manual
This is the 57 pages manual for sony mdx c 7890 r service manual.
Read or download the pdf for free. If you want to contribute, please upload pdfs to audioservicemanuals.wetransfer.com.
Extracted text from sony mdx c 7890 r service manual (Ocr-read)
Page 1
Ð 2 Ð 1. SERVICING NOTES ................................................ 2 2. GENERAL ................................................................... 3 3. DISASSEMBLY ......................................................... 9 4. ELECTRICAL ADJUSTMENTS Test Mode ........................................................................ 14 MD Section ..................................................................... 14 Tuner Section .................................................................. 14 Flexible Circuit Board Repairing ¥ Keep the temperature of the soldering iron around 270 ûC 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 chip component replacement ¥ Never reuse a disconnected chip component. ¥ Notice that the minus side of a tantalum capacitor may be dam- aged by heat. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. 3-023-589-01 (AEP: TYPE 2) 3-023-590-01 (AEP: TYPE 1) S® MDX-C7890R MODEL NO. FM/MW/LW MINIDISC PLAYER POWER SELECT SWITCH C E A ¥ TYPE A/B Discrimination [MAIN BOARD] (Component Side) ¥ Model Identification Ð Model Number Label Ð IC700 MB90574PFV-G-113-BND ( TYPE A ) MB90F574PFV-G-113 ( TYPE B ) Laser Diode Properites ¥ Material: GaAlAs ¥ Wavelength: 780 nm ¥ Emission Duration: continuous ¥ Laser Output Power: less than 44.6 µW* * This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block. 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 PUB- LISHED BY SONY. SECTION 1 SERVICING NOTES 5. DIAGRAMS 5-1. Printed Wiring Boards Ð MECHANISM DECK Section Ð ................................. 17 5-2. Schematic Diagram Ð MECHANISM DECK Section Ð ................................. 19 5-3. Schematic Diagram Ð MAIN Section Ð .......................... 23 5-4. Printed Wiring Board Ð MAIN Section Ð ...................... 27 5-5. Printed Wiring Board Ð PANEL Section Ð .................... 31 5-6. Schematic Diagram Ð PANEL Section Ð ....................... 33 5-5. IC Pin Function Description ........................................... 35 7. EXPLODED VIEWS ................................................ 52 8. ELECTRICAL PARTS LIST ............................... 56 TABLE OF CONTENTS
Page 2
Ð 3 Ð SECTION 2 GENERAL This section is extracted from instruction manual.