Sony-STRDE1015G-rec-sm维修电路原理图.pdf

1 SERVICE MANUAL MICROFILM STR-DE1015G SPECIFICATIONS FM STEREO FM-AM RECEIVER Continued on next page US Model Canadian Model RadioFans.CN 收音机爱 好者资料库 2 RadioFans.CN 收音机爱 好者资料库 3 TABLE OF CONTENTS 1. SERVICING NOTE. 4 2. GENERAL.5 3. DISASSEMBLY 3-1. Front Panel . 26 3-2. Balance Board, Display Board and Volume Board. 26 4. TEST MODE. 27 5. ELECTRICAL ADJUSTMENTS. 28 6. DIAGRAMS 6-1. IC Pin Functions. 30 6-2. Circuit Boards Location. 47 6-3. Block Diagrams Input/Output Section. 49 Power Amp Section . 51 DA Section. 53 DSP Section . 55 AC-3 (RF) Section . 57 OSD Section . 59 OSD Control Section . 61 Panel Section . 63 Power Section . 65 6-4. Printed Wiring Board Input/Output Section . 68 6-5. Schematic Diagram Input/Output Section . 71 6-6. Schematic Diagram Power Amp Section . 75 6-7. Printed Wiring Board Power Amp Section . 79 6-8. Printed Wiring Board Digital Section . 83 6-9. Schematic Diagram Digital (D/A) Section . 87 6-10. Schematic Diagram Digital (Control) Section . 91 6-11. Schematic Diagram Digital (Dolby AC-3) Section . 95 6-12. Printed Wiring Board Panel Section . 98 6-13. Schematic Diagram Panel Section . 101 6-14. Schematic Diagram OSD Section . 105 6-15. Printed Wiring Board OSD Section .109 6-16. IC Block Diagrams . 112 7. EXPLODED VIEWS 7-1. Case Section.117 7-2. Front panel Section .118 7-3. OSD Board Section.119 7-4. Chassis Section . 120 8. ELECTRICAL PARTS LIST. 121 SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE The AC leakage from any exposed metal part to earth Ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microampers). Leak- age current can be measured by any one of three methods. 1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers instructions to use these instruments. 2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a pas- sive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A) Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be damaged by heat. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. 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. Fig. A. Using an AC voltmeter to check AC leakage. MODEL IDENTIFICATION BACK PANEL Parts No.Model 4-989-885-4 4-989-885-5 US model Canadian model Parts No. AC voltmeter (0.75V) 1.5k 0.15F Earth Ground To Exposed Metal Parts on Set 4 ALL CLEAR Mode which erases all the user memories registered in this unit and sets to setting at shipment. Procedure: 1. With the power turned OFF, press the POWER button while pressing the MODE button, AUDIO FUNCTION and VIDEO FUNCTION button simultaneously to turn ON the power. 2. ALL CLEAR 3/5 will be displayed on the fluorescent indicator tube, and ALL CLEAR will be executed. FACTORY SET Mode which sets the memory of the unit to the setting of adjust- ment and check at factory. (Not used for servicing.) Procedure: 1. With the power turned OFF, press the POWER button while pressing the MODE button and AUDIO FUNCTION button simultaneously to turn ON the power. 2. FACTORY SET will be displayed on the fluorescent indicator tube, and FACTORY SET will be executed. Note: In case you return the unit to the customer, do not perform FACTRY SET. If you do it, perform ALL CLEAR. Fluorescent indicator tube, LED all lit mode Procedure: 1. With the power turned OFF, press the POWER button while pressing the MODE button and VIDEO FUNCTION button simultaneously to turn ON the power. 2. The fluorescent display tubes and LEDs will all light up. Re- lease the buttons in the order of VIDEO FUNCTION , and MODE . 3. The Fluorescent indicator tube display changes as follows by pressing the DPC MODE . (Pressing the other buttons will exit this mode.) SECTION 1 SERVICING NOTE Adjustment of OSD Screen Position The position of the screen can be adjusted freely to correct the de- viation of the OSD screen caused by the monitor type that users are using. 1. Move the cursor of the remote commander supplied as an acces- sory, and display the OSD screen. 2. Click the SET UP of the OSD screen. 3. Next click TV SET. 4. Next click GRAPHIC POSITION SET. 5. The screen for adjusting the OSD screen position will be dis- played. Adjust the position with the remote commander supplied as an accessory. 6. Click EXIT to end. AM Tuning Step 9 kHz/10 kHz Selection Method: 1. Turn ON the power, set the AUDIO FUNCTION to AM, and turn OFF the power. 2. While pressing the TUNING + button or PRESET TUNING + button, press the POWER button. 3. “AM 9K STEP” or “AM 10k STEP” will be displayed on the FL display tube. 9 Fluorescent indicator tube and all LEDs are OFF 9 Partial lighting of fluorescent indicator tube 2, LEDs are OFF *1 9 Partial lighting of fluorescent indicator tube 1, LEDs are OFF *1 9 Fluorescent indicator tubes, LEDs are all lit Press DPC MODE button. Press DPC MODE button. Press DPC MODE button. 9 Press DPC MODE button. *1 Those other than the POWER LED go OFF. 4. To exit the mode, press the POWER button to turn OFF the power. 12345 AC-3 RF DISCRETE PRO LOGIC MONO STEREO MEMORY MEMORY SOUND FIELDDIGITALDIGITAL 26 SECTION 3 DISASSEMBLY 3-2. BALANCE BOARD, DISPLAY BOARD AND VOLUME BOARD 0 DISPLAY board 8 Four screws (BVTP2.6x8) 9 Remove the four claws. 7 Two screws (BVTP2.6x8) 4 Two screws (BVTP2.6x8) 5 BALANCE board and VOLUME board 6 Bracket 3 Knob (Balance) 1 Knob (Volume) 2 Nut Note: Follow the disassembly procedure in the numerical order given. 3-1. FRONT PANEL 1 Three screws (BVTP3x8) 2 Screw (BVTP3x8) 3 Flat type wire (19 core) (CNS701) 4 Flat type wire (CNJ203) 5 Flat type wire (21 core) (CN3301) 8 Flat type wire (19 core) (CNS402) 7 Front panel 6 Three screws (BVTP3x8) 27 SECTION 4 TEST MODE Self-Diagnosis and Test Mode This unit is provided with a “self-diagnosis and self-recovery func- tion” which detects DSP errors and automatically recovers the unit, and a test mode for performing operation checks during repairs. 1. MAIN FUNCTIONS DSP self-diagnosis program for servicing and operation check mode. 2. ENTERING THE TEST MODE While pressing the MODE button and AUDIO FUNCTION < button simultaneously in the power OFF state, press the POWER button. 3. Self-diagnosis Mode for Servicing/Display of DSP Errors 3-1. Self-diagnosis Mode for Servicing Before entering the test mode, DSP self-diagnosis program for ser- vicing will be run. When an error is detected: The error message is displayed on the fluorescent display tube. When several errors occur at the same time, only the last error detected will be displayed. When no error is detected: First, “DSP ERROR” will be displayed, then “DSP NO ERROR” will be displayed, and the operation check mode will be set. Table-1: Error Message/Fluo- rescent Display Tube Possible Reasons DSP ERROR When a DSP error is detected, after this dis- play, the contents of “3-2. Display of DSP Op- erations” will be displayed. Display of errorPossible cause Mostly due to faulty connection (soldering) between DSP and microprocessor Faulty DSP clock (X3501 and onwards), faulty DSP part, etc. 1 DSPBOOT ERROR 2 DSPHREQ ERROR 3 DSPVRFY ERROR 1 2 1 2 Overrunning of DSP due to heat, microprocessor bugging, or IC3409 (DIGITAL board PLL) is faulty 4 DSP 1 RPLYFaulty DSP part, or faulty microprocessor part, etc. 4. OPERATION CHECK MODE Outputs the Lch LD/DVD OPTICAL signal to the FRONT Lch, REAR Lch, CENTER, and the Rch to the FRONT Rch, REAR Rch, and CENTER. 5. NOTE AFTER USING THE TEST MODE Be sure to unplug the AC plug after the test mode is performed. 1 2 3-2. Display of DSP Operations 28 SECTION 5 ELECTRICAL ADJUSTMENT TUNER SECTION No adjustment is needed due to a tuner unit (TU401). OSD SECTION OSD WIDTH Adjustment Note: Perform “ALL CLEAR” before this adjustment. (Refer to Servicing note on page 4) Connection: Procedure: 1. Press the POWER button and turn ON the power. 2. The OSD function frame will be displayed on the monitor. This screen will disappear in a few seconds automatically when the input of codes using the remote commander stops. If it disappears during adjustments, move the cursor of the re- mote commander supplied as an accessory. The screen will ap- pear again. 3. While watching the monitor screen, adjust CT201 of the OSD (V) board so that the following adjustment standard is satisfied. OSD COLOR BURST Adjustment Connection: Procedure: 1. Without anything connected to the external input terminal, press the POWER button and turn ON the power. 2. Adjust CT202 of the OSD (V) board so that the reading on the frequency counter becomes 3.579545 MHz 10 MHz. OSD PICTURE Adjustment Connection: Connection 1: MONITOR OUT SET Monitor Adjustment standard: Adjust so that the width B becomes one and a half times of width A. 1.5A = B NOTE: Extra margin is provided in this adjustment in consideration of the deviation of the screen according to the type of monitor used. Consequently, the user is able to adjust the position of the screen freely. (For details, refer to “Adjustment of OSD Screen Position” in 1. Servicing note. Refer to page 4.) frequency counter OSD (V) board JW232 + Monitor Vectorscope set MONITOR OUT Connection 2: Monitor Vectorscope set MONITOR OUT VIDEO 1 IN VTR etc. Procedure 1: 1. Without anything connected to the external input terminal (con- nection 1), press the POWER button and turn ON the power. 2. Check that the OSD function frame screen is displayed on the monitor. If no OSD function frame screen is displayed, move the cursor button of the remote commander supplied as an ac- cessory provided to display the screen. 3. Observe the vectorscope, and adjust RV201 of the OSD (V) board so that the light dots converge in the BLUE area. 4. Connect a dynamic picture video device to the external input terminal (VIDEO 1 IN jack) of this unit (Connection 2). 5. Press the VIDEO FUNCTION button and set the input source to VIDEO 1. 6. Move the cursor of the remote commander supplied as an acces- sory provided, and display the OSD function frame. 7. Observe the vectorscope. Check that the light dots in the BLUE range and the light dots adjusted at 3 are coinciding. 8. If they do not coincide, disconnect the external video device, and adjust RV201 of the OSD (V) board again. 9. If the light dots when an external video device is connected and not connected coincide, it indicates the end of the adjustment. monitor screen FUNCTIONSOUNDSETUP INPUTSUBUSER? ?+?=?P?p?)?(?0 ?1 ABOSD function frame 29 Procedure 2: (When no vectorscope is used) Connection: 1. Connect a dynamic picture video device to the VIDEO 1 IN jack of the unit. 2. Press the VIDEO FUNCTION button, and set the input source to VIDEO 1. 3. Move the cursor of the remote commander supplied as an ac- cessory provided, and display the OSD function frame. 4. Take note of the blue and green screens at the bottom left of the OSD function frame. 5. Disconnect the video device connected at 1. 6. Adjust RV201 of the OSD (V) board so that the blue and green parts at the bottom left of the OSD function frame to the same color as the images checked at 4. Adjustment Location OSD (V) BOARD (Component side) Monitorset MONITOR OUTVIDEO 1 IN VTR etc.Monitor monitor screen FUNCTIONSOUNDSETUP INPUTSUBUSER? ?+?=?P?p?)?(?0 ?1 OSD function frame Blue area Green area Note) Perform this adjustment when disconnecting the external video de- vice. If the external video device is connected, there is no meaning in performing this adjustment due to the use of the color burst of the external device instead of the internal sync signal. JW232 IC205 CT201 IC215 RV201 CT202 CNP202 OSD WIDTH OSD PICTURE OSD COLOR BURST 30 Function 6-1. IC PIN FUNCTIONS SECTION 6 DIAGRAMS O O O O O O O O O O O O O I I/O O O O O I I I I I I I I I O O IC103 Mode controller (MB90673PF) Function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Pin No.Pin NameI/O Not used Not used Not used Not used Not used Not used STANDBY indicator drive signal output SURROUND indicator drive signal output TONE indicator drive signal output INDEX indicator drive signal output Ground CD indicator drive signal output DAT/MD indica