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Technics SJ-HD505 Service Manual
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Technics SJ-HD505 Service Manual

Technics SJ-HD505 Service Manual

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ORDER No.AD9905119C2
Mini Disc Deck
SJ-HD505
Colour
(S)...................Silver Type
Area
E...................Europe.
System: SC-HD505MD
Because of unique interconnecting cables, when a
compact requires service, send or bring in the entire
system.
Note:Refer to the service manual for Model No.SE-HD
505MD(ORDER NO.AD9904116A2) for information on
"ACCESSORIES", "INSTALLATION", "CONNECTIONS"
and "PACKING"
SPECIFICATIONS
Specifications

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Summary of Contents for Technics SJ-HD505

  • Page 1 ORDER No.AD9905119C2 Mini Disc Deck SJ-HD505 Colour (S)....Silver Type Area E....Europe. System: SC-HD505MD Because of unique interconnecting cables, when a compact requires service, send or bring in the entire system. Note:Refer to the service manual for Model No.SE-HD 505MD(ORDER NO.AD9904116A2) for information on “ACCESSORIES”, “INSTALLATION”, “CONNECTIONS”...
  • Page 2 3.Total harmonic distortion is measured by the digital spectrum analyzer. System/SC-HD505MD: Tuner:ST-HD505MD, Compact Disc Player:SL-HD505, Amplifier :SE-HD505MD, Mini Disc Deck:SJ-HD505, Speakers:SB-HD505 (Made in MAES.) 1999 Matsushita Electric Industrial Co., Ltd. / / All rights reserved. Unauthorized copying and / / distribution is a violation of law.

  • Page 23: Before Repair

    Diagram.” 2. Before Repair This equipment (SJ-HD505),which is a component of this system,is supplied with power from the amplifier (SE-HD505MD) through the tuner (ST-HD505MD). When repairing this equipment or checking operation of the system, be sure to connect the amplifier and tuner with it.
  • Page 24 5.1. Handling of MD Unit (optical pickup) 1. Do not subject the MD unit (optical pickup) to static electricity as it is extremely sensitive to electrical shock. 2. The short land between the No. 25 (LD-GND) and No. 24 (LD) pins on the flexible board is shorted with a solder build-up to prevent damage to the laser diode.

  • Page 25: Operation Checks And Main Component Replacement Procedures

    6. Operation Checks and Main Component Replacement Procedures...
  • Page 31 7. Basic Knowledge of MD 8. Operating Procedures 8.1. Operating Procedures Play 1. To read the signals recorded on the disc, the laser beam emitted by the laser diode (LD) strikes the disc and is reflected back and...
  • Page 32 detected by the photodetector (PD). - For a pre-mastered disc, similar to a CD, the signals are recorded as pits on the surface of the disc, and the signals are detected by the amount of light reflected when the laser beams strikes the pits.
  • Page 33 DRAM and pins 43, 44, 45, and 46 of the MD LSI. Record 1. The signals input from OPTICAL IN are input to pins 70 and 71 of the MD LSI (IC3) via the buffer amp IC(IC401; input: pin 4,6 output: pin 3,5) 2.
  • Page 34 With the unit turned "ON" , laser radiation is emitted from the pickup lens. This unit SJ-HD505 is designed to operate on power supplied from the Amplifier SE-HD505MD through the Tuner ST-HD505MD.When connecting the unit to other system components, do not connect to the Amplifier SE-HD505MD directly.
  • Page 35 TRACK to "ONE". (Refer to Fig.3.) 2. As shown in Fig.4, short-circuit the no. 8 pin (TP77) of IC10 and GND (TP74) with the lead wire. (This enables the unit to enter the operation mode and to activate the operation switches on the front panel.) 3.
  • Page 36 Fig.5 9.3. How to Check Play/Rec. Signal to This Unit alone Necessary instruments: - Recorded MD - Recordable MD - Optical cable - Portable CD player and CD (You can check this operation with any player that has an optical digital output terminal other than the portable CD player.
  • Page 37 5. Remove the MD after check. (Recording check) Recording check 6. Connect the portable CD player (or any player with an optical digital output terminal) with the unit (CD side of the optical digital input terminal). (Refer to Fig.7.) 7. Set the recordable MD. 8.
  • Page 38 9.4. Laser Power Adjustment Adjust each laser power: read power for reading (play) and write power for writing (record). 9.4.1. Necessary Instruments - Laser power meter (Advantest TQ8210 or compatible meter) - Test disc (Pre-mastered disc RFKV0006 or RFKV0014) - Recordable disc available on sales root (with music recorded) - Insulated driver for adjustment such as a ceramic driver - Jitter meter 9.4.2.
  • Page 39 affects its recording operation. Recommended torque for mounting screw: 700 g cm +/- 100 g cm Reference: This is the same force as using a screwdriver with a 15 -mm diameter grip, you fasten the screw naturally with your thumb and index finger. 3.
  • Page 40 5. Position the sensor of the laser power meter directly above the optical pickup. (Refer to Fig.9.) Fig.9 6. Press the CD EDIT button and confirm that the reading of the laser power meter is within the specified range. If it is higher than 680 uW, adjust by turning VR1 and set to lower than 680 uW.

  • Page 41: Troubleshooting Guide

    7.5 mW. Doing so will result in damage to the optical pickup. 9. Press the CD EDIT button, the read power will be displayed again. Confirm that the read power is within 600 uW and 740 uW. 10. Then, again press the CD EDIT button. The laser power recorded in the laser ROM will be displayed.

  • Page 47: Schematic Diagram Notes

    11. Schematic Diagram Notes 11.1. Schemtic Diagram Notes This schematic diagram may be modified at any time with the development of new technology. Notes: - S1 : PROTECT det. switch. - S2 : REFLECT det. switch. - S3 : LOAD OPEN det. switch. - S4 : DISC IN det.
  • Page 48 - S404 : Edit (EDIT) switch. - S405 : Stop ( ) switch. - S406 : Pause ( ) switch. - S407 : Play ( ) switch. - S408 : Rec (REC) switch. - S409 : R.skip/search ( ) switch. - S410 : F.skip/search ( ) switch.
  • Page 49 : Playback signal : Recording signal 11.2. Type Illustration of IC’s, Transistors and Diodes 12. Schematic Diagram 13. Printed Circuit Board and Wiring Connection Diagram 14. Block Diagram 15. Wiring Connection Diagram 16. Terminal Function of IC’s 16.1. IC1 (AN8772FHQ) : RF AMP Mark Function Division...
  • Page 68 Mark Function Division TGAIN Tracking gain adjustment input terminal Lens position signal output terminal AB GAIN APP compensation signal gain adjustment terminal Focus error signal output terminal AS GAIN AS gain adjustment terminal FBAL Focus ballance adjustment terminal AS/3TMON signal output MON3T terminal 3T envelope det.
  • Page 69 Mark Function Division VREF Reference voltage output terminal RF1 signal input terminal RF2 signal input terminal F1 signal input terminal F2 signal input terminal CLPF1 — APP compensation LPF capacitor connection terminal CLPF2 — RF equalizer adjustment resistor connection terminal Beam A~D signal input terminal CENVC...
  • Page 70 Mark Function Division VO4+ Tracking coil driver output terminal VO3- Focus coil driver output terminal VO3+ Focus coil driver output terminal VO2- Traverse motor drive output terminal VO2+ Traverse motor drive output terminal VO1- Spindle motor drive output terminal Spindle motor drive output terminal PGND —...
  • Page 71 Mark Function Division ADIP ADIP FM signal input terminal Lens position signal input terminal Focus error signal input terminal Tracking error signal input terminal AS signal input terminal DRMONI Drive voltage monitor input terminal Battery power supply terminal AMONI — Servo analog monitor signal output (Not used, poen)
  • Page 72 Power supply terminal...
  • Page 73 Mark Function Division FG input terminal NRECT Rec/Play switching signal output terminal IVDD2 — Power supply terminal for I/ O pad IVDD0 — Power supply terminal for I/ O pad DVss0 — GND terminal RAD12 — DRAM address output terminal (Not used, open) ~RAD10 RAD9 DRAM address output...
  • Page 74 Mark Function Division LRCK CD word clock input terminal (Connected to GND) CD bit clock input terminal (Connected to GND) DATA CD data input terminal (Connected to GND) Digital audio interface signal output terminal (Not used, open) Digital audio interface signal 1 input terminal Digital audio interface signal 2 input terminal...
  • Page 75 Mark Function Division RFCK RF serial clock output terminal NRFLD RF serial load output terminal TRCRS Track cross input terminal OFTR Off-track signal input terminal APCD Laser power PWM output terminal 93 EXEFMCK External FM clock input terminal (Not used, connected to GND through registor) PEFM1...
  • Page 76 Mark Function Division LOAD1 Loading motor drive 1 output terminal LOAD0 Loading motor drive 0 output terminal 10 NEFMON Magnetic head current output terminal TEST01 Test signal output terminal (Not used, open) TVSW Traverse innermost detection switch signal input terminal DISC IN Disc detection switch signal input terminal...
  • Page 77 Mark Function Division Drive signal output OUT1 terminal to LED DRIVE (“H” :LED ON) ~LED OUT3 TEST02 Test signal output terminal (Not used, open) Power supply terminal (+ 2(3V) OSC1 Crystal oscillator input terminal (f=10.02MHz) OSC2 Crystal oscillator output terminal (f=10.02MHz) —...
  • Page 78 Mark Function Division PANEL Panel I/F data output DATA 0 terminal PANEL Panel I/F chip select output terminal SELAD Micro computer I/F address select output terminal SSCLK Micro computer I/F clock output terminal SSDR Micro computer I/F reading data input terminal SSDW Micro computer I/F writing data output terminal...
  • Page 79 Mark Function Division 71 SELADDA AD/DA converter select signal input terminal (Open) SLOCK Spindle lock test signal output terminal (Not used, open) TLOCK Tracking lock signal output terminal (“H”:lock) (Not used, open) FLOCK Focus lock test signal output terminal (“H”:lock) (Not used, open) ERROR Servo error test signal...

  • Page 80: Replacement Parts List

    Mark Function Division DRAM data 1 in/output terminal DRAM data 2 in/output terminal DRAM light enable input terminal DRAM low address strobe input terminal DRAM address 9 input terminal DRAM address 0 input terminal DRAM address 1~3 input terminal Power supply terminal DRAM address 4~8 input terminal DRAM output enable input...
  • Page 81 part and product retention. After the end of this period, the assembly will no longer be available. Ref. No. Part No. Part Name & Description Pcs Remarks RHD30007-S SCREW RGK0972-1S SIDE PANEL(L) RGL0394-Q PANEL LIGHT(L) XTBS26+8J SCREW RGK0973-1S SIDE PANEL(R) RGL0395-Q PANEL LIGHT(R) XTBS3+8JFZ1...
  • Page 82 Ref. No. Part No. Part Name & Description Pcs Remarks ECUV0J105ZFV 6.3V 1U ECUVNA224KBV 10V 0.22U ECUV0J105ZFV 6.3V 1U C7,8 ECUVNA224KBV 10V 0.22U ECUV1C223KBV 16V 0.022U ECUV0J474KBV 6.3V 0.47U ECUV1C393KBV 16V 0.039U ECUV1H102KBV 50V 1000P ECST0GY106RR 4V 10U ECUV1H181KV 50V 180P ECUV1H332KBV 50V 3300P ECUV1H562KBV 50V 5600P ECUVNC104ZFV 16V 0.1U...
  • Page 83 Ref. No. Part No. Part Name & Description Pcs Remarks ECUVNC104ZFV 16V 0.1U ECUV1H560JCV 50V 56P ECUV1C473KBV 16V 0.047U C83,84 ECUVNC104ZFV 16V 0.1U ECST0GY106RR 4V 10U ECUV1E153KBV 25V 0.015U ECUVNC104ZFV 16V 0.1U C88,89 ECUV1H331KBV 50V 330P C90,91 ECUV1H080DCV 50V 8P ECUVNC104ZFV 16V 0.1U ECUVNC104ZFV 16V 0.1U ECST0GY475RR 4V 4.7U...
  • Page 84 Ref. No. Part No. Part Name & Description Pcs Remarks C325 ECA1CM222 16V 2200U C327-29 ECUVNE104ZFN 25V 0.1U C331 ECUVNE104ZFN 25V 0.1U C351,52 ECEA1CKS220 16V 22U C353 ECUVNE104ZFN 25V 0.1U C355 ECEA1AKS221 6.3V 220U C356 ECUV1H101JCN 50V 100P C357,58 ECUVNE104ZFN 25V 0.1U C361-64 ECUVNE104ZFN 25V 0.1U C365...
  • Page 85 Ref. No. Part No. Part Name & Description Pcs Remarks RLQU101KT-W COIL RLQU101KT-W COIL RLQU2R2MT-W COIL RLQU2R2MT-W COIL L6-8 RLQU2R2MT-W COIL L9-12 RLQU100KT-W COIL L13,14 RLQU2R2MT-W COIL RLQU100KT-W COIL RLQU2R2MT-W COIL L17,18 RLQP1R8KT2-Y COIL L301 RLQZB470KT-D COIL L303-05 RLQZP1R0KT-Y COIL L307-10 RLQZP1R0KT-Y COIL PCB1...
  • Page 86 Ref. No. Part No. Part Name & Description Pcs Remarks ERJ3GEYJ272V 1/16W 2.7K ERJ3GEYJ473V 1/16W 47K ERJ3GEYJ104Z 1/16W 100K ERJ3GEYJ473V 1/16W 47K R28,29 ERJ3GEYJ473V 1/16W 47K ERJ3GEYJ102Z 1/16W 1K ERJ3GEYJ223V 1/16W 22K ERJ3GEYJ473V 1/16W 47K ERJ3GEYJ272V 1/16W 2.7K ERJ3GEYJ183V 1/16W 18K ERJ3GEYJ273V 1/16W 27K ERJ3GEYJ333V 1/16W 33K ERJ3GEYJ223V 1/16W 22K...
  • Page 87 Ref. No. Part No. Part Name & Description Pcs Remarks R116 ERJ3GEYJ101V 1/16W 100 R117 ERJ3GEYJ101V 1/16W 100 R118 ERJ3GEYJ102Z 1/16W 1K R119,20 ERJ3GEYJ101V 1/16W 100 R121,22 ERJ3GEYJ272V 1/16W 2.7K R123 ERJ3GEYJ102Z 1/16W 1K R124 ERJ3GEYJ473V 1/16W 47K R125 ERJ3GEYJ473V 1/16W 47K R130 ERJ3GEYJ272V 1/16W 2.7K R131...
  • Page 88 Ref. No. Part No. Part Name & Description Pcs Remarks R413 ERJ6GEYJ153V 1/10W 15K R414 ERJ6GEYJ473V 1/10W 47K R415 ERJ6GEYJ822V 1/10W 8.2K R416 ERJ6GEYJ153V 1/10W 15K RX301,02 T0RX178A OPT.IN S1,2 RSH1A91ZA-A SW PROTECT/REFLECT RSH1A044-1A SW LOAD OPEN RSH1A91ZA-A SW DISC IN S5,6 RSH1A044-1A SW LOAD PLAY/REC...
  • Page 90 Ref. No. Part No. Part Name & Description Pcs Remarks RHD30007-S SCREW RGK0972-1S SIDE PANEL(L) RGL0394-Q PANEL LIGHT(L) XTBS26+8J SCREW RGK0973-1S SIDE PANEL(R) RGL0395-Q PANEL LIGHT(R) XTBS3+8JFZ1 SCREW REZ1048 FFC(30P) RKA0098-K FOOT RKM0364-1S CABINET REP2683B-S LED(L R) P.C.B. RGG0148A-1S FRONT PANEL RGK0977-2S MD LID RGL0386-Q...
  • Page 92 Ref. No. Part No. Part Name & Description Pcs Remarks RED0047-1 MAGNETIC HEAD RHD17021 SCREW RHD17022 SCREW RMC0348 THRUST SPRING RMC0349 NUT PLATE SPRING RML0515 SHIFTER RMQ0750 REF BASE RMQ0751 NUT PLATE RMS0611 MAIN SHAFT RXJ0021 DRIVE SHAFT RXK0249 MECHANISM CHASSIS 110-1 RDV0055 BELT...
  • Page 93 Corrections in descriptions Laser Power Adjustment. Please file and use this supplement manual together with the service manual for Model No. SJ-HD505(E), Order No. AD9905119C2. 2000 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 95 Printed in Japan (H000104200 TN/HH)