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MDS-PC3
SERVICE MANUAL
US Model
Canadian Model
AEP Model
UK Model
E Model
Photo: SILVER
US and foreign patents licensed form Dolby Laboratories Model Name Using Similar Mechanism MDS-JE640
Licensing Corporation.
MD Mechanism Type MDM-7A
Optical Pick-up Type KMS-260B/J1N
SPECIFICATIONS
System MiniDisc digital audio system General
Disc MiniDisc
Where purchased Power requirements*
Laser Semiconductor laser (λ = 780 nm)
Emission duration: continuous
U.S.A. and Canada 120 V AC, 60 Hz
Laser output Le
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*Note: As this unit has only a few buttons, one button is assigned with several functions in the test mode.” Press the z button, AMS knob to switch the functions. • Each time the z button is pressed, the display switches in the follwing order, “PGM” t “blank” t “PGM” t –. • Rotate the AMS knob and the display switches in the following order, “blank” t “TOC” t “EDIT” t “TOC EDIT” t “[ ]” t “[TOC ]” t “[ EDIT]” t “[TOC EDIT]” t “blank” t – –. For simplic
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1. While pressing the AMS knob and x/Z button, connect the power plug to the outlet, and release the AMS knob and x/Z button. When the test mode is set, “[Check]” will be displayed. 2. Rotate the AMS knob and when “[Service]” is displayed, press the @/1 button. 3. Rotate the AMS knob and display “Err Display”. 4. Pressing the @/1 button sets the error history mode and displays “op rec tm”. 5. Select the contents to be displayed or executed using the AMS knob. 6. Pressing the A
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Table of Error Codes TABLE OF CONTENTS Error Code Description 1. SERVICING NOTES ............................................. 5 10 Could not load 12 Loading switches combined incorrectly 2. GENERAL ........................................................................ 11 20 Timed out without reading the top of PTOC 3. DISASSEMBLY 21 Could read top of PTOC, but detected error 3-1. Case (U) .............................................................................. 14 22 Timed out without ac
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SECTION 1 SERVICE NOTES Lead free soldering NOTES ON HANDLING THE OPTICAL PICK-UP MAIN and PANEL boards of this product are lead free soldered BLOCK OR BASE UNIT (contains no lead). Lead-free solder have the following characteristics. The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the • The melting point is about 40 ºC higher than conventional solder. charged electrostatic load, etc. on clothing and the hu
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JIG FOR CHECKING BD BOARD WAVEFORM The special jig (J-2501-196-A) is useful for checking the waveform of the BD board. The names of terminals and the checking items to be performed are shown as follows. GND : Ground I+3V : For measuring Iop (Check the deterioration of the optical pick-up laser) Iop : For measuring Iop (Check the deterioration of the optical pick-up laser) TE : TRK error signal (Traverse adjustment) VC : Reference level for checking the signal RF : RF signal (Check jitter) FE : F
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Iop DATA RECORDING AND DISPLAY WHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC195 OF BD BOARD) ARE REPLACED The Iop value labeled on the optical pick-up can be recorded in the non-volatile memory. By recording the value, it will eliminate the need to look at the value on the label of the optical pick-up. When replacing the optical pick-up or non-volatile memory (IC195 of BD board), record the Iop value on the optical pick-up according to the following procedure. Record Precedure: 1. While press
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CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent. Details of the procedures are described in “5 Electrical Adjustments”. • 5-6-2. Laser power check (see page 27) • 5-6-3. Iop Compare (see page 27) • 5-6-4. Auto Check (see page 28) Note: The criteria for determination above is intended merely to determine if satisfactory or not, and does not serve as the specified value for adjustment
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RETRY CAUSE DISPLAY MODE • In this test mode, the causes for retry of the unit during recording can be displayed on the indication vessel. During playback, the “track mode” for obtaining track information will be set. This is useful for locating the faulty part of the unit. • The following will be displayed : During recording and stop : Retry cause, number of retries, and number of retry errors. During playback : Information such as type of disc played, part played, copyright. These are displaye
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Reading the Track Mode Display Higher Bits Lower Bits Details Hexa- Hexadecimal 8421 8 4 2 1 decimal Bit b7 b6 b5 b4 b3 b2 b1 b0 When 0 When 1 Binary 0000 0 0 0 1 01 Emphasis OFF Emphasis ON 02 Stereo 0000 0 0 1 0 Monaural 04 0000 0 1 0 0 This is 2-bit display. Normally 01. 0000 1 0 0 0 08 01:Normal audio. Others:Invalid 0001 0 0 0 0 10 Audio (Normal) Invalid 0010 0 0 0 0 20 Original Digital copy 40 No copyright 0100 0 0 0 0 Copyright Write allowed 1000 0 0 0 0 80 Write prohibited Reading the Di
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This section is extracted from SECTION 2 instruction manual. GENERAL Location and Function of Parts 11 9 AyB button (23) Location and Function of Parts Remote Parts Press to select Repeat A-B Play. 0 REPEAT button (23) Description Front Panel Parts Description Press to play tracks repeatedly. qa NAME EDIT/SELECT button (37) This chapter tells you about the location and function of the various buttons and controls on the front panel qh Press to add the name or change the name of a and the supplie
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Location and Function of Parts 12 While the deck is recording While the deck is playing While the deck is stopped Using the Display Press DISPLAY repeatedly to change the Press DISPLAY repeatedly to change the Press DISPLAY repeatedly to change the display. display. display. The display window shows information about the Each press of the button changes the display as Each press of the button changes the display as Each press of the button changes the display as MD or track. This section descri
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Getting Started 13 Connecting the MD deck with Hooking Up an audio component The MD deck is capable of recording from both The MD deck can be connected to PCs with PC analog and digital sources. LINK capability (such as the VAIO-series of PCs), peripheral devices such as portable CD When recording from an analog players, and active speakers. Make sure all devices source are turned off before you hook them up. Required connecting cord CD player or digital CS tuner, Audio connecting cord (supplied
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SECTION 3 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 3-1. CASE (U) 4 case (U) 2 3 claws 1 three screws (BVTP 3x10) 1 three screws (BVTP 3x10) 3-2. MD MECHANISM DECK (MDM-7A) 1 flat type wire (23 core) (CN102) 2 two screws 2 two screws (+BVTTWH M3 3x10) (+BVTTWH M3 3x10) 1 flat type wire (27 core) (CN101) 3 mechanism deck 14
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3-3. MAIN BOARD 2 two screws 1 flat type wire (13 core) (BVTP 3x8) (CN103) 4 MAIN board 3 three screws (BVTP 3x8) 3-4. OVER LIGHT HEAD (HR901), BD (MD) BOARD 2 screw (P 1.7x6) 3 head, over light (HR901) 4 Removal the solders 8 BD (MD) board 6 1 connector (CN104) 7 FLEXIBLE board 4 Removal the solders (CN101) 5 two screws (BTP 2x6) 15
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3-5. HOLDER ASSY 2 claw 3 6 holder assy 5 4 boss 4 boss 1 spring (holder), tension 3-6. LOADING MOTOR ASSY (M103) 1 belt (loading) 2 two screws (PWH 1.7x2.5) 3 motor assy, loading (M103) 16
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3-7. SLED MOTOR ASSY (M102), SLIDER Remeve the claw. 3 Shift the slider in the arrow A direction. 4 slider (EJ) 5 A 8 lever (head) 6 slider 2 guide (L) 1 two screws (BTP 2x6) 9 two screws 7 lever (CHG) (PWH 1.7x2.5) 0 motor assy, sled (M102) 3-8. OPTICAL PICK-UP (MD) (KMS-260B/JIN) qa optical pick-up (KMS-260B/J1N) 7 MAIN shaft 1 FLEXBLE boaed 0 slider (SL) 9 screw (P 1.7x6) 6 two screws 8 (K 2x6) 4 screw (BTP 2x6) 5 base (BU-A) 3 gear (SD) 2 screw (M 1.7
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3-9. SPINDLE MOTOR ASSY (M101) 2 motor assy, spindle (M101) 1 screw (M 1.7), tapping 18
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SECTION 4 TEST MODE *Note: As this unit has only a few buttons, one button is assigned with several functions in the test mode.” Press the z button, AMS knob to switch the functions. • Each time the z button is pressed, the display switches in the follwing order, “PGM” t “blank” t “PGM” t –. • Rotate the AMS knob and the display switches in the following order, “blank” t “TOC” t “EDIT” t “TOC EDIT” t “[ ]” t “[TOC ]” t “[ EDIT]” t “[TOC EDIT]” t “blank”
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4-5. SELECTING THE TEST MODE There are 26 types of test modes as shown below. The groups can be switched by rotating the AMS knob. After selecting the group to be used, press the @/1 button. After setting a certain group, rotating the AMS knob switches between these modes. Refer to “Group” in the table for details selected. All adjustments and checks during servicing can be performed in the test mode in the Service group. NOTE: Do not use the test mode in the [Develop] group. If used, the
