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PMC-DR50 SERVICE MANUAL US Model Ver 1.0 2000.03 TAPE Model Name Using Similar Mechanism Section Tape Transport Mechanism Type MF-PMCDR50 Model Name Using Similar Mechanism MD Mechanism Type KSM-213CCP Section Optical Pick-up Type KSS-213C SPECIFICATIONS – Continued on page 2 –...
LIST ARE CRITICAL TO SAFE OPERATION. 3. Confirm the laser diode emission while observing the objecting REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE lens. When there is no emission, Auto Power Control circuit or PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN Optical Pick-up is broken.
SECTION 2 GENERAL LOCATION AND FUNCTION OF CONTROLS MAIN UNIT 1 VOLUME +, – buttons !¡ PLAY MODE, MONO/ST ISS button 2 CD tray !™ ENTER/MEM button 3 Timer buttons !£ =(–) , +(+) TUNE TIME SET button !¢ LINE IN button STANDBY !∞...
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Remote commander 1 DISPLAY button POWER 2 SLEEP button SLEEP DISPLAY 3 POWER button CD/RADIO 4 Number buttons 5 MEGA BASS button 6 VOLUME +, – buttons 7 SOUND button 8 CD operation buttons =, +(AMS, search) !¡ MODE ( (play) RADIO MEGA/BASS P (pause)
SECTION 3 DISASSEMBLY The equipment can be removed using the following procedure. Case(bottom) CD ASSY Main board, Jack board Tray ASP board Belt Main unit Motor board, Loading motor (M651) Optical pick-up block Cover ASSY, top Mechanism deck TC RF board, Head relay board, Capstan/reel motor (M160) Control board Display board DSP board, CPU board...
3-4. TRAY 3 Projection 1 Turn the gear in a direction as a figure Chassis 3 Projection Tray 3-5. ASP BOARD 1 Screw (+P 2x6) ASP board 2 Remove solder 3 Wire, parallel (16 core) Chassis – 8 –...
SECTION 4 ADJUSTMENTS 4-1. MECHANICAL ADJUSTMENTS Record/Playback/Erase Head Azimuth Adjustment Procedure : 1. Mode : FWD playback TAPE RECORDER SECTION test tape PRECAUTION level meter P-4-A100 1. Clean the following parts with a denatured-alcohol-moistened (10kHz, –10dB) 47K Ω swab : record/playback/erase head pinch roller rubber belts...
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Tape Speed Adjustment TUNER SECTION 0dB=1µV Procedure : – FWD Playback Mode – AM Section test tape BAND button : AM WS-48B frequency counter (3kHz, 0dB) Volume : MIN 47K Ω 60cm loop antenna B loop antenna A AM RF signal LINE OUT (JK301) generator 1.
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Auto Stop Level Adjustment FM IF ADJUSTMENT Adjust for a maximum reading on level meter. FM RF signal generator 10.7MHz 0.01 µF FM FREQUENCY COVERAGE CONFIRMATION FM EXT. ANT. reading on digital Adjust part Frequency display terminal voltmeter 22.5kHz frequency deviation by Confirmation 87.5MHz 1.2 –...
SECTION 5 DIAGRAMS 5-1. EXPLANATION OF IC TERMINALS MAIN UNIT-2 Pin No. Pin name Description IC801 CXP82832-022Q (SYSTEM CONTROL, FL DRIVE) SYS MUTE Mute signal output. TUNER MUTE Tuner mute signal output. Pin No. Pin name Description TC RF board CD MUTE CD mute signal output.
PMC-DR50 5-5. SCHEMATIC DIAGRAM – MAIN SECTION (1/3) – Waveforms – MAIN SECTION (1/3) – 1.5Vp-p 75kHz VOLT/DIV : 0.5 V AC IC3 wa TIME/DIV : 5 msec Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.
PMC-DR50 Refer to page 62 for IC Block Diagrams. Refer to page 39 for Waveforms. 5-6. SCHEMATIC DIAGRAM – MAIN SECTION (2/3) – Refer to page 39 for Notes. – 36 – – 37 – – 38 –...
PMC-DR50 5-9. SCHEMATIC DIAGRAM – CD SECTION – Refer to page 63 - 64 for IC Block Diagrams. Refer to page 49 for Waveforms. Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.
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PMC-DR50 5-10. SCHEMATIC DIAGRAM – CONTOROL SECTION – Waveforms (CD SECTION) Waveforms – CONTROL SECTION – (PLAY MODE) 4.8Vp-p 1.0 – 1.5Vp-p 32.768kHz IC701 ed VOLT/DIV : 0.5 V AC VOLT/DIV : 1V AC TIME/DIV : 1 µsec IC801 rs (RFO) TIME/DIV : 10 µsec...
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PMC-DR50 5-11. PRINTED WIRING BOARDS – CONTOROL SECTION – Refer to page 20 for Circuit Boards Location. MAIN BOARD JACK BOARD Semiconductor CN304 CN304 Location (Page 31) (Page 29) Ref. No. Location D801 D802 [CONTROL BOARD] [CPU BOARD] MAIN BOARD...
PMC-DR50 5-13. SCHEMATIC DIAGRAM – AMP SECTION – Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. • All resistors are in Ω and W or less unless otherwise specified.
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IC Block Diagrams – MAIN SECTION (2/3) – IC Block Diagrams – CD SECTION – IC751 CXD2589Q IC301 TA2068N IC701 CXA1992BR IC305 BA338 59 58 57 54 53 52 51 50 LOGIC MONITOR MONITOR 9 8 7 6 5 4 3 SYSM PD2 IV SERIAL-IN...
SECTION 6 EXPLODED VIEWS NOTE : • -XX, -X mean standardized parts, so they • The mechanical parts with no reference The components identified by mark 0 may have some difference from the original number in the exploded views are not or dotted line with mark 0 are critical one.
6-6. CD OPTICAL PICK-UP SECTION (KSM-213CCP) not s upplied (including M702) M702 M701 The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref.
6-7. SPEAKER (R-CH) SECTION F501 not supplied not supplied T501 SP101 not supplied not supplied not supplied supplied not supplied The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref.
SECTION 7 AMP IC ELECTRICAL PARTS LIST NOTE : • Due to standardization, replacements in the • SEMICONDUCTORS In each case, u : µ , for example : The components identified by mark 0 parts list may be different from the parts or dotted line with mark 0 are critical uA..