Technics-SLP310-cd-adj 电路图 维修手册.pdf

Adjustment Manual 1. ADJUSTMENT PROCEDURE Refer to the service manual for the disassembling methods of each parts. (Note) Avoid the direct entrance of laser rays into the eyes and exposure of the body to laser rays which are dangerous. Especially be carefull in the electric and optical pick-up adjustments because a laser beam is radiated from the lens of the optical pick-up when the power supply of unit is turned on. Also follow the adjusting procedures given in the manual. 1-1. Preparation for Eleetiig:Adjustments Remove the cabinet, and front panel. Remove the power switch rod. Release the optical pick-up lock by pressing in the lock shaft located on the bottom side of unit ( ol PPIPIPEPEP l ? VTV T? QT?TQTQI RadioFans.CN 收音机爱 好者资料库 e TEST DISC (SZZP1014F) old type Contents TON PURPOSE SIGNAL Time| |TON PURPOSE SIGNAL Time (Toc) 19 | Freq. Response 15 Hz 030 1 | Servo adjustment Wowble Tone -10dB L+R| 200 20 | Freq. Response 20 0:30 Pickup assenmetr 21 | Freq. Response 50 030 2 adjusfment Y | wowble Tone -10d8 L+R| 500 73 Freg. Res%nse 100 030 3 | Reference 1 kHz 0 dB L+R 100 23 | Freq. Response 200 030 4 | Freq. Response 20kHz 0 dB L+R 030 24 | Freq. Response 500 030 5 | Emphasis 16 kHz -0.96 L+R 030 25 | Freq. Response 2K 030 6 | Channel Separation |L 1kHz 0 dB R-= 030 26 | Freq. Response 5K 030 7 | Channel Separation R 1kHz 0 dB L-= 030 27 | Freq. Response 10K 030 8 | Dynamic range 1 kHz -60 dB L+R 100 28 | Freq. Response 12K 030 9 | Linearity 1 kHz -80 dB L+R 100 29 | Freq. Response 15K 030 10 S/N - o 200 30 | Freq. Response 18K 030 11 | THD 1 kHz 0 dB L+R 100 31 | Freq. Response 20K 030 12 | Black Spot Wowble Tone -10 dBL+R|500 32 | Channel Separation |L 100Hz 0 dB R - 030 13 | Black Spot Wowble Tone -10 dBL+R500 33 | Channel Separation |R 100Hz 0 dB L - 030 14 | Finger Print Wowble Tone -10 dBL+R|500 34 | Channel Separation L 10kHz 0 dB R - = 030 15 | Finger Print Wowble Tone -10 dBL+R 900 35 | Channel Separation |R 10kHz 0 dB L - = 030 16 | Wedge Wowble Tone -10 dBL+R | 4700 36 | Channel Separation (L 20kHz 0 dB L - = 030 17_| Wedge Wowble Tone -10 dBL+R|400 37 | Channel Separation |R 20kHz 0 dB L - = 18 | Reference 1 kHz 0 dB L+R 030 * This old type test disc has been changed to new type (CDT-002) This old type test disc has 37 tracks and display shown 37 tracks when this disc is played * Characteristics of old type and new type (CDT- 002) are completely same. And both disc can use for same purpose * e TEST DISC (SZZP1014F) new type INSPECTION TEST DISC (SZZP1054C) CDT-016 Contents Contents TON PURPOSE SIGNAL Time TON PURPOSE SIGNAL Time 1_| Reference 1 kHz L+R 0dB 180 1_| Reference 1 kHzL+R 0dB 100 2 | SIN 1 kHz L+R - 140 2 | Reference 400Hz L+R 0dB 140 3 | separation 1kHz L 0d8 180 3 | Wedge 0.3 mm 400Hz L+R -10dB 210 _| Separation TkARz R_0d8 10 5 | Wedge 0.5 mm 400Hz L+R -10dB 2720 5_| Dynamic Range 1 kHz L+ -78d8 180 5 | Wedge 0.6 mm 500Hz L+R -10dB 220 6_| Emphsis TehkHz LR 0dB._ 150 6 | Wedge 0.7 mm 400Hz L+R -10dB 250 7 | Black Band 0.8 mm | 800Hz L+R -10dE 300 7 | Wedge 0.8 mm 400Hz L+R -10dB 2740”7 8 | Black Band 0.5 mm | 800Hz L R -10dB 230 8 | Wedge 0.9 mm 400Hz L+R -10dB 370 9 | Wedge 0.7 mm 300Hz L+R -10d8B 500 9 | Black dot 0.3 mm 400Hz L+R -10dB 355 10 | Fingerprint No.3 400Hz L+R -10dB 200 10 | Black dot 0.4 mm | 400Hz L+R -10dB 410 T.430Hz L+R -T0dB 800 11 Black dot 0.5 mm 400Hz L+R -10dB yag 1 Index 2.880Hz L+R -10dB 800 12 Black dot 0.6 mm 400Hz L+R -10dB 505 3.1760Hz L+R 10dB 100 13 Black dot 0.7 mm 400Hz L+R -10dB 510 12 Repeat check 1 kHz L+R 0dB 0o5 14 Black dot 0.8 mm 400Hz L+R -10dB 605 15 | Black dot 0.9 mm. |400Hz L+R -10dB 9ys e UNEVEN DISC (SZZP1056C) Structure Usage e BLACK BAND DISC (S2ZP1057C) Structure Usage side : Ordinary disc with small piece for uneveness : Optical pick up mechanical adjustment : Ordinary disc with 0.5 mm width tape at both : Adjustment for regular size FF1 CD player (n (2) Tracking offset adjustment Focus offset adjustment RadioFans.CN 收音机爱 好者资料库 2. ADJUSTING POINT AND TEST POINT ILLUSTRATION To Power supply cir= cuit (BT1l) Position Line out 1L CN11 Cleap point for the power supply of serve point adjuster (SZZP10O17F) -=- Red lead wire - Cleap point for the power supply . of servo gain adjuster (SZZP1017F) | = Blue lead wire sl 000000 1C-12. 2 . 1C-202 J procedure. | o Optical pick-up adjustment Electric adjustment i Does tracking servo Probably faulty location work? NO | oC101 | | Broken PU coil o Tracking servo driver y Check tracking offset. NO Readjust tracking offset. (Refer to Page 11.) v Probably faulty location Servo circuit o PD balance setting (Refer to Pageill. ) Replace optical pick-up. soAaD30A). 6-2. HOW TO HANDLING OPTICAL PICK-UP The laser diode in the optical pick-up may be damaged by potential difference caused by static charge on clothing or body. Pay careful attention to damage by static charge when repaired. e Handling of Optical Pick-up 1. 2. 3. Dont give a heavy shock to the optical pick-up which is very precisely constructed. A charge prevention pin is inserted in the flexible PCB for preventing damage to the laser diode. The pin should be removed or installed in a short time. Handle the flexible PCB with care because PCB may be cut if an excessive stress is applied. Dont meddle with the laser power adjusting VR which is adjusted prior to shipping. Lens (Dont touch) Flexible PCB (Handle with care.) Semi-fixed variable resistor (Dont turn.) Must short-circuit this portion with supplied short circuit pin / or clip. Lomoood Clip Short circuit pin e Grounding for Preventing Static Charge Damge 1. Body Grounding Put on the charge preventing wrist strap for discharging electricity from the body. working Table Grounding Lay electrically conductive material (conductive sheet) or an iron plate on the table where the optical pick-up is placed, and ground the material or sheet to the floor. Note: Static charge of clothing is not discharged from the wrist strap. Exercise care so that clothing shall not touch the wrist strap. Wrist strap (Charge prevention ring) M0 electrically conductive material 7. OPTICAL PICK-UP REPLACEMENT PROCEDURE Note: Exercise care so that disassembled parts shall not be lost. Set up the player so that it can be power on checked as shown in illustration according to the disassembly procedure outlined in the service manual. (1) Remove the front panel, (2) Pushing the two stopper pawls of the disc holder inward simultanouely, pull the holder to remove it. Note: The stopper pawls are nothing to reassembling. (4) Remove the resisting plate for the position detector. Screw /Stopper pawl Disc tray _ (5) Unsolder the linear motor drive coil and optical pick-up to separate them. (6) Remove the two linear motor drive coil fastening screws Note: Pay due attention to the contact brush. (7) Disconnect the optical pick-up 17-pin flexible cord from connector CN101 on the main PCB. Note: 1. Pull out the connector at the point indicated by the arrow side. 2. Pull out the flexible cord. (8) Remove the three optical pick-up fastening screws. (9) Remove the optical pick-up fastening shaft. Note: Be careful not to lose or misplace the cushion rubber. (10) The optical pick-up has been completely separated with this. It is not necessary to remove the traverse unit as before. If the unit needs to be removed, pay attention to the four springs during removing. N screw l 1LL-+ (2 screw Shift | _Cushion rubber 11 Remove the linear motor coil fastening bracket. Screw (12) Install the optical pick-up in the reverse order of disassembling so that Power On check can be conducted as shown in illustration. Spring Fat silver color Rear side of traverse mechanism L Black color / Silver B / color Spring Front side 8. ADJUSTING PROCEDURE OF OPTICAL PICK-UP 8-1. Adjusting steps and Points of optical pick-up Set up player according to disassembling procedure so that VR106 VR105 VR104 VR103 VR102 VR101 power-on check can be conducted. _ 7 7 / 1 y Temporarily set adjusting variable resistors on servo PCBs. ), o) 5 () ol B ; |_ Turntable y height adjust Adjust turntable height. e Y Mechanical adjustment Y Electric adjustment 8-2. Required Measuring Instruments and Tools Two-channel oscilloscope (with external trigger), over 30 MHz, Test desc (SZZP1014F) or (SZZP1054C) Allen wrench - 1.5 mm (SZZP1044C) General tools EWN - o o 9. MECHANICAL ADJUSTMENT PROCEDURE A. Turntable Hight Adjustment (1) Turn on the power supply switch of the player. (2) Place the test disc (SZZP1014F) or (SZZP1054C) to the disc holder (3) Turn off the power supply switch of the player. (4) Set the oscilloscope to DC zero balance. (5) Connect the CH-1 of the oscilloscope to TJ102 of the servo circuit and GND to the chassis. I Sweep : 5m sec. Oscilloscope settings - | Volt : 100mV Input selector: DC (6) Turn on the power supply switch of the player. (7) Play back a desired track. (8) Place the unit in the corner of the workbench - in the place that allows the adjustment - and set it as illustrated with care not go give vibration to the unit. i:)Focus offset . test 111022 yuswr poineld VR10 ble heigh = Turntable height VRIGS adjustment point $). 13101 8 Tracking C) offset Test Point CN102-CN301 (GND) Spindle PCB JCIP MN15261PDF p ) | Main PCB Adjuster (9) Turn the adjusting screw on the underside of the spindle motor PCB by a flat screwdriver so that the waveform at TJ102 shall be 0 + 50mV as shown in illustration. (10) Turn off the power supply switch of the player. (11) tock the adjusting screw with Screw lock paint (RZZOL01) on completion of adjustment. 7N Turntable high / - 18 Spindle motor_| 4< adjust point Drive PCB “ / 7277 OIS 2277z add lock paint (RZZ0OLO01) B. Mechanical Adjustment (1) Turn on the power supply switch of the player. (2) Insert the test disc (SZZP1056C) in the disc holder. (3) Turn off the power supply switch of the player. (4) set the oscilloscope as stated below. Sweep : 0.5 usec, Oscilloscope settings | Volt : 0.5V Input selector: AC (5) Connect CH-1 of the oscilloscope to TJ301 of RF test point and GPD to TJ302 of RF test point (GND). (6) Turn on the power supply switch of the player. (7) play back TR9. Note: if any track other than TR is played back, this adjustment cannot be achieved. If the temporary adjustment takes much time, it is advisable to set the player in the repeat mode. (8) set the player in the playback mode as shown in r ilustration with care not to give vibration to the unit. ) S, 8 /Adjuster Q. 1101 Q VR103 J S) Tratki o;af(;e tng RF test point Test 74301 (CH Point CN102R9 10K 10K TP 1 TP2 c1 0.01; c2 ;Lo.m C 12V d 50V 10u 1 (Circuit Protection) F.E.Ad:% | o b1 20t AMP 02 3 T.E._BJZZ o OFF o Ref. No. Part No. Qty 1C AN6552 1 R1,2,3,4,6,7,9 | ERDS2TJ103 7 R 5,8 ERDS2TJ472 2 c1,2 ECKD1H103ZF 2 C ECEATHU100 2 Connector SSDJB13BXHA 1 Lead Wire (180,600mm) 2 3 Wire with 1 abcd (Diode) MA162 y Printed in Japan 0611000 KM 26 8606