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MDS-S9
SERVICE MANUAL
Ver 1.0 2001.06
AEP Model UK Model
US and foreign patents licensed from Dolby Laboratories.
Model Name Using Similar Mechanism MD Mechanism Type Optical Pick-up Name
MDS-S50 MDM-7A KMS-260B
SPECIFICATIONS
System MiniDisc digital audio system Disc MiniDisc Laser Semiconductor laser ( = 780 nm) Emission duration: continuous Laser output MAX 44.6 µW1) 1) This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block with 7 mm aperture. Laser diode Material: GaAlAs Revolutions (CLV) 400 rpm to 900 rpm Error correction ACIRC (Advanced Cross Interleave Reed Solomon Code) Sampling frequency 44.1 kHz Coding ATRAC (Adaptive TRansform Acoustic Coding)/ATRAC 3 Modulation system EFM (Eight-to-Fourteen Modulation) Number of channels 2 stereo channels Frequency response 5 to 20,000 Hz ±0.3 dB Signal-to-noise ratio Over 96 dB during play Wow and flutter Below measurable limit
Outputs
ANALOG OUT Jack type: phono Rated output: 2 Vrms (at 50 kilohms) Load impedance: over 10 kilohms 230 V AC, 50/60Hz 15 W 0.5 W (at the STANDBY mode) 280 × 83 × 290 mm (w/ h/d) incl. projecting parts and controls 2.4 kg
General
Power requirements Power consumption
Dimensions (approx.) Mass (approx.)
Supplied accessories
Audio connecting cords (2) Optical cable (1) Remote commander (remote) (1) R6 (size-AA) batteries (2) Design and specifications are subject to change without notice.
Inputs
ANALOG IN Jack type: phono Impedance: 47 kilohms Rated input: 500 mVrms Minimum input: 125 mVrms Connector type: square optical Impedance: 660 nm (optical wave length)
DIGITAL IN
MINIDISC DECK
9-873-914-11
2001F0500-1 C 2001.6
Sony Corporation
Home Audio Company Shinagawa Tec Service Manual Production Group
MDS-S9
SELF-DIAGNOSIS FUNCTION
The deck's self-diagnosis function automatically checks the condition of the MD deck when an error occurs, then issues a threeor five-digit code and an error message on the display. If the code and message alternate, find them in the following table and perform the indicated countermeasure. Should the problem persist, consult your nearest Sony dealer.
C11/Protected
, Take out the MD and close the record-protect slot.
C12/Cannot Copy
· You tried to record a CD with a format that the external device connected to the deck does not support, such as CD-ROM or video CD. , Remove the disc and insert a music CD.
C13/REC Error
, Set the deck in a stable surface, and repeat the recording procedure. · The inserted MD is dirty (with smudges, fingerprints, etc.), scratched, or substandard in quality. , Replace the disc and repeat the recording procedure.
C13/Read Error
, Take out the MD and insert it again.
C14/TOC Error
, Insert another disc. , If possible, erase all the tracks on the MD.
C41/Cannot Copy
· The sound source is a copy of commercially available music software, or you tried to record a CD-R (Recordable CD). , The Serial Copy Management System prevents making a digital copy. You cannot record a CD-R.
C71/Din Unlock
· The sporadic appearance of this message is caused by the digital signal being recorded. This will not affect the recording. · While recording from a digital component connected through the DIGITAL IN connector, the digital connecting cable was unplugged or the digital component turned off. , Connect the cable or turn the digital component back on.
PROCEDURE FOR USING THE SELF-DIAGNOSIS FUNCTION (ERROR HISTORY DISPLAY MODE)
Note: Perform the self-diagnosis function in the "error history display mode" in the test mode. The following describes the least required procedure. Be careful not to enter other modes by mistake. If you set other modes accidentally, press the MENU/NO button to release the mode.
1. While pressing the [ . AMS > ] knob and x button simultaneously, connect the power plug to the outlet, and release the [ .AMS > ] knob and x button simultaneously to display "[Check]". 2. Turn the [. AMS >] knob and when "[Service]" is displayed, press the [YES] button to display "AUTO CHECK" (C01). 3. Turn the [. AMS >] knob to display "Err Display" (C02). 4. Press the [YES] button to sets the error history mode and displays "op rec tm". 5. Select the contents to be displayed or executed using the [. AMS >] knob. 6. Press the [. AMS >] knob to display or execute the contents selected. 7. Press the [. AMS >] knob another time returns to step 4. 8. Press the [MENU/NO] button to display "Err Display" (C02) and release the error history mode. 9. To release the test mode, press the I/1 button. The unit sets into the STANDBY state, and the test mode ends.
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MDS-S9
ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS
Display op rec tm Details of History Cumulative recording time is displayed. When cumulative recording time is over 1 minute, the hour and minute are displayed as they are. When it is under 1 minute, "Under 1 min" is displayed. The displayed time is the total time the laser is set to the high power state. This is about 1/4 of the actual recording time. The time is displayed in decimal digits. Cumulative playing time is displayed. When cumulative playing time is over 1 minute, the hour and minute are displayed as they are. When it is under 1 minute, "Under 1 min" is displayed. The displayed time is the total of the actual play time. Pauses are not counted. The time is displayed in decimal digits. Cumulative spindle motor running time is displayed. When cumulative spindle motor run time is over 1 minute, the hour and minute are displayed as they are. When it is under 1 minute, "Under 1 min" is displayed. The time is displayed in decimal digits. Displays the total number of retries during recording and number of retry errors during playback. Displayed as "r ss p ss". "r" indicates the retries during recording while "p" indicates the retry errors during playback. The number of retries and retry errors are displayed in hexadecimal digits from 00 to FF. Displays the total number of errors. Displayed as "total ss". The number of errors is displayed in hexadecimal digits from 00 to FF. Displays the 10 latest errors. Displayed as "0s ErrCd @@". s indicates the history number. The smaller the number, the more recent is the error. (00 is the latest) @@ indicates the error code. Refer to the following table for the details. The error history can be switched by turning the [ . AMS > ] knob. Display the 5 latest retry address. Display as "ss ADRS@@@@". ss indicates the history number. The smaller the number, the more recent is the error. (00 is the latest) @@@@ indicates the cluster of retry address. The number of retry address can be switched by turning the [ . AMS > ] knob. Mode to clear the error history and retry address history. Procedure: 1) Press the [. AMS > ] button. 2) The display will change to "er refresh?", and then press the [YES] button. The operation is over if "Complete!" is displayed. After this mode was executed, check the following: · The data have been cleared. · Perform the recording and playing to check that the mechanism operates normally. Mode to clear cumulative time of "op rec tm" and "op play tm". These historical data are used to determine the timing when the optical pick-up is to be replaced. When the optical pick-up was replaced, perform this operation to clear historical data. Procedure: 1) Press the [. AMS > ] button. 2) The display will change to "op chang?", and then press the [YES] button. The operation is over if "Complete!" is displayed. Mode to clear cumulative time of "spdl rp tm". This historical data is used to determine the timing when the spindle motor is to be replaced. When the spindle motor was replaced, perform this operation to clear historical data. Procedure: 1) Press the [. AMS > ] button. 2) The display will change to "spdl chang?", and then press the [YES] button. The operation is over if "Complete!" is displayed.
op play tm
spdl rp tm
retry err
total err
err history
retry adrs
er refresh
op change
spdl change
3
MDS-S9
Table of Error Codes Error Code 10 12 20 21 22 23 24 30 31 40 41 42 43 50 51 60 Loading failed Loading switch combination is illegal Head of PTOC could not be read within the specified time Head of PTOC could be read but its content is erroneous Access to UTOC could not be made within the specified time UTOC could be not read within the specified time Content of UTOC is erroneous Playing could not start Content of sector is erroneous Cause of retry occurred during normal recording D-RAM overflowed and retry was executed Retry was executed during the writing to TOC S.F editing was interrupted by retry Address could not be read except in access processing Focusing failed and it is out of control Unlock retry Details of Error
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MDS-S9
TABLE OF CONTENTS SELF-DIAGNOSIS FUNCTION .................................... 2 1. 2. 3.
3-1. 3-2. 3-3. 3-4. 3-5.
SERVICING NOTES ............................................... 6 GENERAL ................................................................... 10 DISASSEMBLY
Disassembly Flow ........................................................... Case ................................................................................. MD Mechanism Deck (MDM-7A) ................................. MAIN Board ................................................................... BD Board ......................................................................... 12 13 13 14 14
CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions. ADVARSEL! Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering. Udskiftning må kun ske med batteri af samme fabrikat og type. Levér det brugte batteri tilbage til leverandøren.
4. 5. 6.
TEST MODE .............................................................. 15 ELECTRICAL ADJUSTMENTS ......................... 20 DIAGRAMS
31 32 33 35 36 37 38 39 40 41 42 43 44 45 46
ADVARSEL Eksplosjonsfare ved feilaktig skifte av batteri. Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten. Brukte batterier kasseres i henhold til fabrikantens instruksjoner. VARNING Explosionsfara vid felaktigt batteribyte. Använd samma batterityp eller en likvärdig typ som rekommenderas av apparattillverkaren. Kassera använt batteri enligt gällande föreskrifter. VAROITUS Paristo voi räjähtää, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin. Hävitä käytetty paristo valmistajan ohjeiden mukaisesti. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
6-1. Block Diagram SERVO Section ............................... 6-2. Block Diagram MAIN Section ................................. 6-3. Note for Printed Wiring Boards and Schematic Diagrams ....................................................... 6-4. Printed Wiring Boards BD Board ............................. 6-5. Schematic Diagram BD Board (1/2) ........................ 6-6. Schematic Diagram BD Board (2/2) ........................ 6-7. Printed Wiring Board MAIN Board (Component Side) .............................. 6-8. Printed Wiring Board MAIN Board (Conductor Side) ................................ 6-9. Schematic Diagram MAIN Board (1/3) ................... 6-10. Schematic Diagram MAIN Board (2/3) ................... 6-11. Schematic Diagram MAIN (3/3)/PT Boards ............ 6-12. Printed Wiring Board PT Board ............................... 6-13. Printed Wiring Board DISPLAY Board ................... 6-14. Schematic Diagram DISPLAY Board ...................... 6-15. IC Pin Function Description ...........................................
7.
7-1. 7-2. 7-3. 7-4.
EXPLODED VIEWS
Case Section .................................................................... Front Panel Section ......................................................... Mechanism Deck Section-1 (MDM-7A) ........................ Mechanism Deck Section-2 (MDM-7A) ........................ 52 53 54 55
This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior. The following caution label is located inside the unit.
8.
ELECTRICAL PARTS LIST ............................... 56
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.
SAFETY-RELATED COMPONENT WARNING!!
Flexible Circuit Board Repairing · Keep the temperature of the soldering iron around 270 °C during repairing. · Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). · Be careful not to apply force on the conductor when soldering or unsoldering.
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 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.
5
MDS-S9 SECTION 1 SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK Never look into the laser diode emission from right above when checking it for adjustment. It is feared that you will lose your sight.
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. I+3V IOP GND TE FE VC RF : For measuring IOP (Check the deterioration of the optical pick-up laser) : For measuring IOP (Check the deterioration of the optical pick-up laser) : Ground : Tracking error signal (Traverse adjustment) : Focus error signal : Reference level for checking the signal : RF signal (Check jitter)
CN105
IOP TE I+3V GND FE VC
1
RF
I+3V IOP GND TE FE VC RF 7
I+3V IOP GND TE FE VC RF
for MDM-7A
6
MDS-S9
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 pressing the [.AMS >] knob and x button simultaneously, connect the power plug to the outlet, and release the [.AMS > ] knob and x button simultaneously to display "[Check]". 2. Turn the [ . AMS > ] knob to display "[Service]", and press the [YES] button to display "AUTO CHECK" (C01). 3. Turn the [ . AMS > ] knob to display "Iop Write" (C05), and press the [YES] button. 4. The display becomes "Ref=@@@.@" (@ is an arbitrary number) and the numbers which can be changed will blink. 5. Input the IOP value written on the optical pick-up. To select the number : Turn the [ .AMS > ] knob. To select the digit : Press the [ .AMS > ] knob. 6. When the [YES] button is pressed, the display becomes "Measu=@@@.@" (@ is an arbitrary number). 7. As the adjustment results are recorded for the 6 value. Leave it as it is and press the [YES] button. 8. "Complete!!" will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become "Iop Write" (C05). 9. Press the I/1 button to complete. Display Precedure: 1. While pressing the [. AMS >] knob and x button simultaneously, connect the power plug to the outlet, and release the [.AMS > ] knob and x button simultaneously to display "[Check]". 2. Turn the [. AMS > ] knob to display "[Service]", and press the [YES] button to display "AUTO CHECK" (C01). 3. Turn the [. AMS > ] knob to display "Iop Read" (C26), and press the [YES] button. 4. "@@.@/##.#" is displayed and the recorded contents are displayed. @@.@ : indicates the IOP value labeled on the optical pick-up. ##.# : indicates the IOP value after adjustment 5. To end, press the [. AMS > ] knob or [MENU/NO] button to display "Iop Read" (C26). Then press the I/1 button.
WHEN MEMORY NG IS DISPLAYED
If the nonvolatile memory data is abnormal, "E001 MEMORY NG" will be displayed so that the MD deck does not continue operations. In this case, set the test mode promptly and perform the following procedure. Procedure: 1. Enter the test mode (refer to page 15). 2. Normally a message for selecting the test mode will be displayed. However if the nonvolatile memory is abnormal, the following will be displayed "INIT EEP?". 3. Press the both x and Z buttons simultaneously. 4. Turn the [. AMS > ] knob to display "MDM-7A". 5. Press the [ . AMS >] button. If the nonvolatile memory is successfully overwritten, the normal test mode will be set and a message to select the test mode will be displayed.
FORCE RESET
You can reset the microprocessor of the system with following procedure. Use this method if the device cannot be operated normaly because the microprocessor is hung up or with some reasons. Procedure: Remove the short pin attached on CN420, then install it again. MAIN BOARD (Component Side)
CN420
7
MDS-S9
RETRY CAUSE DISPLAY MODE IN MD
· In this test mode, the causes for retry of the unit during recording and stop can be displayed on the liquid crystal display. 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 displayed in hexadecimal. Precedure: 1. Keep the x button pressed for about 10 seconds, or press the [LEVER/DISPLAY/CHAR] button while pressing x and [MENU/NO] buttons. 2. "RTs00c00e000" is displayed after the mode is set. 3. Press the z button go into recording mode, then press the u button to start recording. 4. To check "track mode", press the u button to playback. 5. To release the test mode, press the I/1 button and turn off the power. Remove the power plug from the outlet after "TOC" is turned off. If you cannot release the test mode, refer to "FORCE RESET" on page 7.
Fig. 1 Reading the Test Mode Display (During recording and stop)
RTs@@c##e*** Liquid crystal display @@ : Cause of retry ## : Number of retries *** : Number of retry errors
Fig. 2 Reading the Test Mode Display (During playback)
@@ ###** $$ Liquid crystal display @@ : ### : ** : $$ : Parts No. (Name of area named on TOC) Cluster Address (Physical address on the Sector disc) Track mode (Track information such as copyright information of each part)
Reading the Retry Cause Display Higher Bits Lower Bits HexaCause of Retry Hexadecimal 8 4 2 1 8 4 2 1 decimal Bit b7 b6 b5 b4 b3 b2 b1 b0 Binary 01 0 0 0 0 0 0 0 1 shock 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 02 04 08 10 20 40 80 ader5 Occurring conditions When track jump (shock) is detected When ADER was counted more than five times continuously
Discontinuous address When ADIP address is not continuous When DIN unlock is detected DIN unlock FCS incorrect IVR rec error CLV unlock Access fault When not in focus When ABCD signal level exceeds the specified range When CLV is unlocked When access operation is not performed normally
Reading the Display: Convert the hexadecimal display into binary display. If more than two causes, they will be added. Example When 42 is displayed: Higher bit: 4 = 0100 t b6 Lower bit : 2 = 0010 t b1 In this case, the retry cause is combined of "CLV unlock" and "ader5". When A2 is displayed: Higher bit: A = 1010 t b7 + b5 Lower bit : 2 = 0010 t b1 The retry cause in this case is combined of "Access fault", "IVR rec error", and "ader5".
8
MDS-S9
Reading the Retry Cause Display Higher Bits Lower Bits HexaHexadecimal 8 4 2 1 8 4 2 1 decimal Bit b7 b6 b5 b4 b3 b2 b1 b0 Binary 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 01 02 04 08 10 20 40 80 Monaural This is 2-bit display. Normally 01. 01: Normal audio. Others: Invalid Audio (Normal) Original Copyright Write prohibited Invalid Digital copy No copyright Write allowed Details When 0 Emphasis OFF Stereo When 1 Emphasis ON
Reading the Display: Convert the hexadecimal display into binary display. If more than two causes, they will be added. Example When 84 is displayed: Higher bit: 8 = 1000 t b7 Lower bit : 4 = 0100 t b2 In this case, as b2 and b7 are 1 and others are 0, it can be determined that the retry cause is combined of "Emphasis OFF", "Monaural", "Original", "Copyright", and "Write allowed". Example When 07 is displayed: Higher bit: 0 = 0000 t All 0 Lower bit : 7 = 0111 t b0 + b1 + b2 In this case, as b0, b1, and b2 are 1 and others are 0, it can be determined that the retry cause is combined of "Emphasis ON", "Stereo", "Original", "Copyright", and "Write prohibited".
Hexadecimal t Binary Conversion Table
Hexadecimal 0 1 2 3 4 5 6 7 Binary 0000 0001 0010 0011 0100 0101 0110 0111 Hexadecimal 8 9 A B C D E F Binary 1000 1001 1010 1011 1100 1101 1110 1111
9
MDS-S9 SECTION 2 GENERAL
LOCATION OF CONTROLS
Front Panel This section is extracted from instruction manual.
AMS qd (8) (10) (12) (13) (16) (24) CLEAR 8 (7) (16) (18) (24) Display qf (8) (17) INPUT qh (8) LEVEL/DISPLAY/CHAR 2 (8) (12) (24) MD insertion slot 4 (16) MD LP indicator qg (10) (17) MENU/NO 6 (10) (18) (20)
PLAY MODE qk (16) REC MODE qj (9) Remote sensor 3 (7) YES 7 (10) (18) (20)
BUTTON DESCRIPTIONS
?/1 (power)/STANDBY indicator 1 (8) (16) Z (eject) 5 (8) (17) m (go back)/M (go forward) 9 (16) (17) (18) (24) z (recording) 0 (8) (10) x (stop) qa (7) (8) (16) NX (play/pause) qs (8) (16)
Back Panel
PC LINK AC power cord
to a wall outlet
Amplifier, etc.
CD player, DBS tuner, etc.1)
1)
Digital equipment with a DIGITAL OUT connector only
10
MDS-S9
Remote control
AyB qs (16) CD PLAYER . (go back)/> (go forward) ql (15) CD-SYNCHRO STANDBY/START/STOP 7 (14) (15) CLEAR 6 (16) (18) (24) DISPLAY ws (8) (12) FADER 3 (28) INPUT wf (8) Letter/number buttons 5 (17) (25) LEVEL +/ qa (12) MENU/NO w; (10) (18) (20) MUSIC SYNC 8 (14) NAME EDIT/SELECT wa (24) PLAY MODE 2 (16) REC MODE wg (9) REPEAT qd (16) SCROLL wd (17) T.REC qj (13) YES 4 (10) (18) (20)
BUTTON DESCRIPTIONS
?/1 (power) 1 (8) (16) X (pause) 9 (8) (16) x (stop) 0 (8) (16) m (fast reverse)/M (fast forward) qf (16) (17) (18) (24) . (go back)/> (go forward) qg (8) (10) (16) (17) (25) (26) z (recording) qh (8) (10) H (play) qk (8) (16) A (eject) wh (8) (17)
11
MDS-S9 SECTION 3 DISASSEMBLY
· This set can be disassembled in the order shown below.
3-1.
DISASSEMBLY FLOW
Set
3-2. CASE (Page 13)
3-3. MD MECHANISM DECK (MDM-7A) (Page 13)
3-4. MAIN BOARD (Page 14)
3-5. BD BOARD (Page 14)
12
MDS-S9
Note: Follow the disassembly procedure in the numerical order given.
3-2.
CASE
2 case
1 two screws (case 3 TP2)
1 two screws (case 3 TP2)
3-3.
MD MECHANISM DECK (MDM-7A)
3 four screws (BVTTWH M3)
1 wire (flat type) (23 core) (CN400)
1 wire (flat type) (27 core) (CN1)
4 MD mechanism deck (MDM-7A)
2 harness
13
MDS-S9
3-4.
MAIN BOARD
2 connector (CN902) 1 wire (flat type) (15 core) (CN490) 5 MAIN board
4 two screws (BVTP3 × 8)
3 three screws (BVTP3 × 8)
3-5.
BD BOARD
BD board CONDUCTOR SIDE VIEW
5 Remove four solders. 1 wire (flat type) (23 core) (CN103) 2 wire (flat type) (27 core) (CN102)
7 BD board
3 connector (CN104)
4 Remove five solders. 6 two screws (2 × 6)
8 flexible board (CN101)
14
MDS-S9 SECTION 4 TEST MODE
4-1. PRECAUTIONS FOR USE OF TEST MODE
· As loading related operations will be performed regardless of the test mode operations being performed, be sure to check that the disc is stopped before setting and removing it. Even if the Z button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will not stop rotating. Therefore, it will be ejected while rotating. Be sure to press the Z button after pressing the [MENU/NO] button and the rotation of disc is stopped. 4-1-1. Recording laser emission mode and operating buttons · Continuous recording mode (CREC 1MODE) · Laser power check mode (LDPWR CHECK) · Laser power adjustment mode (LDPWR ADJUST) · Comparison with initial Iop value written in nonvolatile memory (Iop Compare) · Write current Iop value in read nonvolatile memory using microprocessor (Iop NV Save) · Traverse (MO) check (EF MO CHECK) · Traverse (MO) adjustment (EF MO ADJUST) · When pressing the z button.
4-2.
SETTING THE TEST MODE
The following are two methods of entering the test mode. Procedure 1: While pressing the [. AMS > ] knob and x button simultaneously, connect the power plug to the outlet, and release the [. AMS > ] knob and x button. When the test mode is set, "[Check]" will be displayed. Turning the [. AMS >] knob between the following three groups; ···Tt [Check] Tt [Service] Tt [Develop] Tt ···. Procedure 2: While pressing the [ . AMS > ] knob, connect the power plug to the outlet, and release the [ . AMS > ] knob. When the test mode is set, "TEMP CHECK" (C12) will be displayed. By setting the test mode using this method, only the "Check" group of procedure1 can be executed.
Note: Do not use the test mode in the [Develop] group. If used, the unit may not operate normally. If the [Develop] group is set accidentally, press the [MENU/NO] button immediately to release the [Develop] group.
4-3. 4-4.
RELEASING THE TEST MODE BASIC OPERATIONS OF THE TEST MODE
Press the I/1 button. The unit sets into the STANDBY state, and the test mode ends.
All operations are performed using the [ . AMS > ] knob, [YES] button, and [MENU/NO] button. The functions of knob and buttons are as follows.
Function name Function Changes parameters and modes Proceeds onto the next step. Finalizes input Returns to previous step. Stops operations
[. AMS > ] knob [YES] button [MENU/NO] button
15
MDS-S9
4-5.
SELECTING THE TEST MODE
. AMS >] knob. After selecting the There are 26 types of test modes as shown below. The groups can be switched by turning the [ group to be used, press the [YES] button. After setting a certain group, turning the [ . AMS > ] knob switches modes shown below. Refer to "Group" in the table for details can be selected. All items used for servicing can be treated using group [Service]. So be carefully not to enter other groups by mistake. Note: Do not use the test mode in the [Develop] group. If used, the unit may not operate normally. If the [Develop] group is set accidentally, press the [MENU/NO] button immediately to exit the [Develop] group. Group Display AUTO CHECK Err Display TEMP ADJUST LDPWR ADJUST Iop Write Iop NV Save EF MO ADJUST EF CD ADJUST FBIAS ADJUST AG Set (MO) AG Set (CD) TEMP CHECK LDPWR CHECK EF MO CHECK EF CD CHECK FBIAS CHECK ScurveCHECK VERIFYMODE DETRK CHECK 0920 CHECK Iop Read Iop Compare ADJ CLEAR INFORMATION CPLAY1MODE CREC 1MODE No. C01 C02 C03 C04 C05 C06 C07 C08 C09 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C25 C26 C27 C28 C31 C34 C35 Automatic self-diagnosis Error history display, clear Temperature compensation offset adjustment Laser power adjustment Iop data writing Writes current Iop value in read nonvolatile memory using microprocessor Traverse (MO) adjustment Traverse (CD) adjustment Focus bias adjustment Auto gain output level adjustment (MO) Auto gain output level adjustment (CD) Temperature compensation offset check Laser power check Traverse (MO) check Traverse (CD) check Focus bias check S-curve check Nonvolatile memory check Detrack check Most circumference check Iop data display Comparison with initial Iop value written in nonvolatile memory Initialization of nonvolatile memory for adjustment values Display of microprocessor version, etc. Continuous playback mode Continuous recording mode Details Mark Check Service
· For details of each adjustment mode, refer to "5. Electrical Adjustments". For details of "Err Display", refer to "Self-Diagnosis Function" on page 2. · If a different mode has been selected by mistake, press the [MENU/NO] button to release that mode. · Modes with (×) in the Mark column are not used for servicing and therefore are not described in detail. If these modes are set accidentally, press the [MENU/NO] button to release the mode immediately.
16
MDS-S9
4-5-1. Operating the Continuous Playback Mode 1. Entering the continuous playback mode (1) Set the disc in the unit. (Whichever recordable discs or discs for playback only are available) (2) Turn the [. AMS > ] knob to display "CPLAY1MODE" (C34). (3) Press the [YES] button to change the display to "CPLAY1MID". (4) When access completes, the display changes to "C = AD = )".
Note: The numbers " " displayed show you error rates and ADER.
2. Changing the parts to be played back (1) Press the [YES] button during continuous playback to change the display as below. "CPLAY1MID" t "CPLAY1OUT" t "CPLAY1IN" When pressed another time, the parts to be played back can be moved. When access completes, the display changes to "C = AD = )".
Note: The numbers " " displayed show you error rates and ADER.
(2)
3. Ending the continuous playback mode (1) Press the [MENU/NO] button. The display will change to "CPLAY1MODE" (C34). (2) Press the Z button and take out the disc.
Note: The playback start addresses for IN, MID, and OUT are as follows.
IN : 40h cluster MID : 300h cluster OUT : 700h cluster 4-5-2. Operating the Continuous Recording Mode (Use only when performing self-recording/palyback check) 1. Entering the continuous recording mode (1) Set a recordable disc in the unit. (2) Turn the [. AMS > ] knob to display "CREC 1MODE" (C35). (3) Press the [YES] button to change the display to "CREC 1MID". )" and " REC " lights up. (4) When access completes, the display changes to "CREC 1(
Note: The numbers " " displayed shows you the recording position addresses.
2. Changing the parts to be recorded (1) When the [YES] button is pressed during continuous recording, the display changes as below. "CREC 1MID" t "CREC 1OUT" t "CREC 1IN" When pressed another time, the parts to be recorded can be changed. " REC " goes off. )" and " REC " lights up. When access completes, the display changes to "CREC 1(
Note: The numbers " " displayed shows you the recording position addresses.
(2)
3. Ending the continuous recording mode (1) Press the [MENU/NO] button. The display changes to "CREC 1MODE" (C35) and " REC " goes off. (2) Press the Z button and take out the disc.
Note 1: The recording start addresses for IN, MID, and OUT are as follows.
IN : 40h cluster MID : 300h cluster OUT : 700h cluster Note 2: The [MENU/NO] button can be used to stop recording anytime.
Note 3: Do not perform continuous recording for long periods of time above 5 minutes. Note 4: During continuous recording, be careful not to apply vibration.
4-6.
FUNCTIONS OF OTHER BUTTONS
Function Contents Sets continuous playback when pressed in the STOP state. When pressed during continuous playback, the tracking servo turns ON/OFF Stops continuous playback and continuous recording The sled moves to the outer circumference only when this is pressed The sled moves to the inner circumference only when this is pressed Switches between the pit and groove modes when pressed Switches the spindle servo mode (CLV S y CLV A) Switches the displayed contents each time the button is pressed Ejects the disc Releases the test mode
u x M m REC MODE PLAY MODE LEVEL/DISPLAY/CHAR Z I/1
17
MDS-S9
4-7.
TEST MODE DISPLAYS
Each time the [LEVEL/DISPLAY/CHAR] button is pressed, the display changes in the following order. When CPLAY or CREC are started, the display will forcibly be switched to the error rate display as the initial mode. 1. Mode display Displays "TEMP ADJUST" (C03), "CPLAY1MODE" (C34), etc. 2. Error rate display Displays the error rate in the following way. C= AD = ) C = : Indicates the C1 error. AD = : Indicates ADER. 3. Address display The address is displayed as follows. (MO: recordable disc, CD: playback only disc) h= s= (MO pit and CD) h= a= (MO groove) h = : Indicates the header address. s = : Indicates the SUBQ address. a = : Indicates the ADIP address.
Note: "" is displayed when the address cannot be read.
Mode display Error rate display Address display Auto gain display (Not used in servicing) Detrack check display (Not used in servicing) IVR display (Not used in servicing) C1 error and jitter display (Not used in servicing) AD error and jitter display (Not used in servicing)
MEANINGS OF OTHER DISPLAYS
Display N X REC SYNC L. SYNC OVER B/1 A-/REP TRACK/LP4 DISC/LP2 SHUF/SLEEP MONO Servo ON Tracking servo OFF Recording mode ON CLV low speed mode ABCD adjustment completed Tracking offset cancel ON Tracking auto gain OK Focus auto gain OK Pit High reflection CLV S CLV LOCK Groove Low reflection CLV A CLV UNLOCK Tracking offset cancel OFF Contents When Lit Servo OFF Tracking servo ON Recording mode OFF CLV normal mode When Off
18
MDS-S9
4-8.
AUTOMATIC SELF-DIAGNOSIS FUNCTION
This test mode performs CREC and CPLAY automatically for mainly checking the characteristics of the optical pick-up. To perform this test mode, the laser power must first be checked. Perform AUTO CHECK after the laser power check and Iop Compare. Procedure: 1. Turn the [. AMS > ] knob to display "AUTO CHECK" (C01). 2. Press the [YES] button. If "LDPWR " is displayed, it means that the laser power check has not been performed. In this case, perform the laser power check and Iop Compare, and then repeat from enter the test mode. 3. If a disc is in the mechanical deck, it will be ejected forcibly. "DISC IN" will be displayed in this case. Load a test disc (MDW-74/GA-1) which can be recorded. 4. If a disc is loaded at step 3, the check will start automatically. 5. When "XX CHECK" is displayed, the item corresponding to XX will be performed. When "06 CHECK" completes, the disc loaded at step 3 will be ejected. "DISC IN" will be displayed. Load the check disc (TDYS-1). 6. When the disc is loaded in step 5, the check will automatically be resumed from "07 CHECK". 7. After completing to test item 12, check OK or NG will be displayed. If all items are OK, "CHECK ALL OK" will be displayed. If any item is NG, it will be displayed as "NG:xxxx". When "CHECK ALL OK" is displayed, it means that the optical pick-up is normal. Check the operations of other parts (spindle motor, sled motor, etc.). When displayed as "NG:xxxx", it means that the optical pick-up is faulty. In this case, replace the optical pick-up.
4-9.
INFORMATION
Display the software version. Procedure: 1. Turn the [. AMS > ] knob to display "INFORMATION" (C31). 2. Press the [YES] button. 3. The software version will be displayed. 4. Press the [MENU/NO] button to end this mode.
19
MDS-S9 SECTION 5 ELECTRICAL ADJUSTMENTS
5-1. PARTS REPLACEMENT AND ADJUSTMENTS
If malfunctions caused by optical pick-up such as sound skipping are suspected, follow the following check.
Check before replacement
Start
5-7-2. Laser Power Check (See page 23) OK
NG
5-7-3. Iop Compare (See page 23) OK
NG
5-7-4. Auto Check (See page 24) OK
NG
Replace optical pick-up or MDM-7A
Other faults are suspected. Check the mechanism parts (spindle motor, sled motor, etc.)
20
MDS-S9
Adjustment flow
Start
· Abbreviation OP: optical pick-up
Replace IC195 NO
YES
After turning off and then on the power, initialize the EEPROM For details, refer to "WHEN MEMORY NG IS DISPLAYED" in 1. SERVICING NOTES (See page 7)
Replace OP or IC195 NO
YES
5-8. INITIAL SETTING OF ADJUSTMENT VALUE (See page 26)
Replace IC101, IC195, or D101 NO
YES
5-10. TEMPERATURE COMPENSATION OFFSET ADJUSTMENT (See page 26)
Replace OP, IC190, or IC195 NO
YES
5-11. LASER POWER ADJUSTMENT (See page 26)
Replace OP, IC102, IC190, or IC195 NO
YES
5-12. Iop NV SAVE (See page 27)
Replace OP, IC101, IC151, or IC195 NO
YES
5-13. TRAVERSE ADJUSTMENT (See page 29) 5-14. FOCUS BIAS ADJUSTMENT (See page 30) 5-17. AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT (See page 29) "op change" in SELF-DIAGNOSIS FUNCTION (ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS) (See page 3) 5-9. RECORDING AND DISPLAYING THE IOP INFORMATION (See page 26)
Replace OP NO
YES
Replace the spindle motor NO 5-7-4. Auto Check (See page 24)
YES
"spdl change" in SELF-DIAGNOSIS FUNCTION (ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS) (See page 3)
End adjustments
21
MDS-S9
5-2.
PRECAUTIONS FOR CHECKING LASER DIODE EMISSION
5-4.
HOW TO DISTINGUISH BETWEEN OPTICAL PICK-UP KMS-260B AND KMS-260E
To check the emission of the laser diode during adjustments, never view directly from the top as this may lose your eye-sight.
5-3.
PRECAUTIONS FOR USE OF OPTICAL PICKUP (KMS-260B/260E)
As the laser diode in the optical pick-up is easily damaged by static electricity, solder the laser tap of the flexible board when using it. Before disconnecting the connector, desolder first. Before connecting the connector, be careful not to remove the solder. Also take adequate measures to prevent damage by static electricity. Handle the flexible board with care as it breaks easily.
optical pick-up flexible board
Two types of optical pick-up, KMS-260B and KMS-260E, are used for this set at manufacturing , and each type has its own specified values for laser power check or laser power adjustment. Terefore, make sure to check which type of optical pick-up is used for the set before laser power check or laser power adjustment. To find the type of optical pick-up is described as follows.
KMS-260B KMS-260E
FPD Plate (L)
laser tap
FPD Plate (S)
Optical pick-up flexible board
5-5. PRECAUTIONS FOR ADJUSTMENTS
1. When replacing the following parts, perform the adjustments and checks with in the order shown in the following table. 2. Set the test mode when performing adjustments. After completing the adjustments, release the test mode. Perform the adjustments and checks in "Group Service" of the test mode. 3. Perform the adjustments to be needed in the order shown. 4. Use the following tools and measuring devices. · Check Disc (TDYS-1) (Part No. : 4-963-646-01) · Test Disk (MDW-74/GA-1) (Part No. : 4-229-747-01) · Laser power meter LPM-8001 (Part No. : J-2501-046-A) or MD Laser power meter 8010S (Part No. : J-2501-145-A)*1 · Oscilloscope (Measure after performing CAL of prove.) · Digital voltmeter · Thermometer · Jig for checking BD board waveform (Part No. : J-2501-196-A) 5. When observing several signals on the oscilloscope, etc., make sure that VC and ground do not connect inside the oscilloscope. (VC and ground will become short-circuited) 6. Using the above jig enables the waveform to be checked without the need to solder. (Refer to Servicing Notes on page 6) 7. As the disc used will affect the adjustment results, make sure that no dusts nor fingerprints are attached to it. *1 Laser power meter When performing laser power checks and adjustment (electrical adjustment), use of the new MD laser power meter 8010S (Part No. J-2501-145-A) instead of the conventional laser power meter is convenient. It sharply reduces the time and trouble to set the laser power meter sensor onto the objective lens of optical pick-up.
Parts to be replaced Adjustment 5-8. 5-9. Initial setting of adjustment value Recording and displaying of Iop information Optical Pick-up IC101 IC102 IC151 IC190 IC195 D101
5-10. Temperature compensation offset adjustment 5-11. Laser power adjustment 5-12. Iop NV Save 5-13. Traverse adjustment 5-14. Focus bias adjustment 5-17. Auto gain adjustment 5-7-4. Auto Check
22
MDS-S9
5-6.
USING THE CONTINUOUSLY RECORDED DISC
· This disc is used in focus bias adjustment and error rate check. The following describes how to create a continuous recording disc. 1. Insert a disc (blank disc) commercially available. 2. Turn the [ . AMS > ] knob to display "CREC 1MODE" (C35). 3. Press the [YES] button to display "CREC 1MID". Display "CREC 1(0300)" and start to recording. 4. Complete recording within 5 minutes. 5. Press the [MENU/NO] button and stop recording . 6. Press the Z button and remove the disc. The above has been how to create a continuous recorded disc for the focus bias adjustment and error rate check.
Note: Be careful not to apply vibration during continuous recording.
Procedure: 1. Set the laser power meter on the objective lens of the optical pick-up. (When it cannot be set properly, press the m button or M button to move the optical pick-up.) Connect the digital voltmeter to CN105 pin 1 (I+3V) and CN105 pin 2 (IOP). 2. Then, turn the [. AMS >] knob to display "LDPWR CHECK" (C13). 3. Press the [YES] button once to display "LD 0.9mW$ ". Check that the reading of the laser power meter become 0.85 to 0.91 mW (KMS-260B) or 0.90 to 0.96 mW (KMS-260E). 4. Press the [YES] button once more to display " LD 7.0mW$ ". Check that the reading the laser power meter and digital voltmeter satisfy the specified value. Specified Value: Laser power meter reading : 7.0 ± 0.2 mW (KMS-260B) 7.25 ± 0.25 mW (KMS-260E) Digital voltmeter reading : Optical pick-up displayed value ± 10%
(Optical pick-up label)
KMS260B or E 20101 B0825
5-7. CHECKS PRIOR TO REPAIRS
These checks are performed before replacing parts according to "approximate specifications" to determine the faulty locations. For details, refer to "5-1. Parts Replacement and Adjustments" (see page 20). 5-7-1. Temperature Compensation Offset Check When performing adjustments, set the internal temperature and room temperature to 22 to 28ºC. Procedure: 1. Turn the [ . AMS > ] knob to display "TEMP CHECK" (C12). 2. Press the [YES] button. 3. "T=@@(##) [OK]" should be displayed. If "T=@@ (##) [NG]" is displayed, it means that the results are bad. (@@ indicates the current value set, and ## indicates the value written in the non-volatile memory.) 5-7-2. Laser Power Check Check the type and IOP value of the optical pick-up before checks. (Refer to 5-4. How to Distinguish between Optical pick-up KMS260B and KMS-260E (see page 22), 5-9. Recording and Displaying the IOP Information (see page 26)) Connection:
laser power meter
For details of the method for checking this value, refer to "5-9. Recording and Displaying the IOP Information"
lOP=82.5 mA in this case lOP (mA) = Digital voltmeter reading (mV)/1 ()
5. Press the [MENU/NO] button to display "LDPWR CHECK" (C13) and stop the laser emission. (The [MENU/NO] button is effective at all times to stop the laser emission.)
Note: After step 4, each time the [YES] button is pressed, the display will be switched between "LD 0.7W$ ", "LD 6.2mW$ ", and "LD WP $ ". Nothing needs to be performed here.
Checking Location: BD board (see page 30) 5-7-3. Iop Compare The current Iop value at laser power 7.0 mW output and reference Iop value (set at shipment) written in the nonvolatile memory are compared, and the rate of increase/decrease will be displayed in percentage.
Note: Perform this function with the optical pick-up set at room temperature.
Optical pick-up objective lens
digital voltmeter BD board CN105 pin 1 (I+3V) CN105 pin 2 (IOP)
+
Procedure: 1. Turn the [. AMS > ] knob to display "Iop Compare" (C27). 2. Press the [YES] button and start measurements. 3. When measurements complete, the display changes to "± xx% yy". xx is the percentage of increase/decrease, and OK or NG is displayed at yy to indicate whether the percentage of increase/ decrease is within the allowable range. 4. Press the [MENU/NO] button to end.
23
MDS-S9
5-7-4. Auto Check This test mode performs CREC and CPLAY automatically for mainly checking the characteristics of the optical pick-up. To perform this test mode, the laser power must first be checked. Perform Auto Check after the laser power check and Iop compare. Procedure: 1. Turn the [ . AMS > ] knob to display "AUTO CHECK" (C01). 2. Press the [YES] button. If "LDPWR " is displayed, it means that the laser power check has not been performed. In this case, perform the laser power check and Iop Compare, and then repeat from enter the test mode. 3. If a disc is in the mechanical deck, it will be ejected forcibly. "DISC IN" will be displayed in this case. Load a test disc (MDW74/GA-1) which can be recorded. 4. If a disc is loaded at step 3, the check will start automatically. 5. When "XX CHECK" is displayed, the item corresponding to XX will be performed. When "06 CHECK" completes, the disc loaded at step 3 will be ejected. "DISC IN" will be displayed. Load the check disc (TDYS-1). 6. When the disc is loaded in the step 5, the check will automatically be resumed from "07 CHECK". 7. After completing to test item 12, check OK or NG will be displayed. If all items are OK, "CHECK ALL OK" will be displayed. If any item is NG, it will be displayed as "NG: xxxx". When "CHECK ALL OK" is displayed, it means that the optical pick-up is normal. Check the operations of other parts (spindle motor, sled motor, etc.). When displayed as "NG: xxxx", it means that the optical pick-up is faulty. In this case, replace the optical pick-up. 5-7-5. Other Checks All the following checks are performed by the Auto Check mode. They therefore need not be performed in normal operation. 5-7-6. Traverse Check 5-7-7. Focus Bias Check 5-7-8. C PLAY Check 5-7-9. Self-Recording/Playback Check
5-7-6. Traverse Check
Note 1:Data will be erased during MO reading if a recorded disc is used in this adjustment. Note 2:If the traverse waveform is not clear, connect the oscilloscope as shown in the following figure so that it can be seen more clearly. oscilloscope (DC range)
BD board CN105 pin 4 (TE) CN105 pin 6 (VC)
330 k
+
10 pF
Connection:
oscilloscope (DC range) BD board CN105 pin 4 (TE) CN105 pin 6 (VC)
+
V: 0.1 V/div H: 10 ms/div
Procedure: 1. Connect an oscilloscope to CN105 pin 4 (TE) and CN105 pin 6 (VC) on the BD board. 2. Load a disc (any available on the market). (Refer to Note 1) 3. Press the M button to move the optical pick-up outside the pit. 4. Turn the [. AMS >] knob to display "EF MO CHECK" (C14). 5. Press the [YES] button to display "EFB = MO-R". (Laser power READ power/Focus servo ON/tracking servo OFF/spindle (S) servo ON) 6. Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not turn the [ . AMS > ] knob. (Read power traverse checking)
Traverse Waveform
A VC B Specified value : Below 10% offset value Offset value (%) = IA BI X 100 2 (A + B)
7. Press the [YES] button to display "EFB = MO-W". 8. Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not turn the [. AMS >] knob. (Write power traverse checking)
Traverse Waveform
A VC B Specified value : Below 10% offset value Offset value (%) = IA BI X 100 2 (A + B)
24
MDS-S9
9. Press the [YES] button to display "EFB = MO-P". Then, the optical pick-up moves to the pit area automatically and servo is imposed. 10. Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not turn the [ . AMS > ] knob.
Traverse Waveform
A VC B Specified value : Below 10% offset value Offset value (%) = IA BI X 100 2 (A + B)
11. Press the [YES] button to display "EF MO CHECK" (C14). The disc stops rotating automatically. 12. Press the Z button and take out the disc. 13. Load the check disc (TDYS-1). 14. Turn the [ . AMS > ] knob to display "EF CD CHECK" (C15). 15. Press the [YES] button to display "EFB = CD". Servo is imposed automatically. 16. Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not turn the [ . AMS > ] knob.
Traverse Waveform
5-7-7. Focus Bias Check Change the focus bias and check the focus tolerance amount. Procedure: 1. Load the test disc (MDW-74/GA-1). 2. Turn the [. AMS > ] knob to display "CPLAY1MODE" (C34). 3. Press the [YES] button to display "CPLAY1MID". 4. Press the [MENU/NO] button when "C = AD = )" is displayed. 5. Turn the [ . AMS > ] knob to display "FBIAS CHECK" (C16). 6. Press the [YES] button to display " / c = ". The first four digits indicate the C1 error rate, the two digits after [/] indicate ADER, and the 2 digits after [c =] indicate the focus bias value. Check that the C1 error is below 20 and ADER is below 2. 7. Press the [YES] button to display " / b = ". Check that the C1 error is about 100 and ADER is below 2. 8. Press the [YES] button to display " / a = ". Check that the C1 error is about 100 and ADER is below 2. 9. Press the [MENU/NO] button, then press the Z button and take out the test disc (MDW-74/GA-1). 5-7-8. C PLAY Check MO Error Rate Check Procedure: 1. Load the test disc (MDW-74/GA-1). 2. Turn the [. AMS > ] knob to display "CPLAY1MODE" (C34). 3. Press the [YES] button to display "CPLAY1MID". 4. The display changes to "C = AD = )". 5. If the C1 error rate is below 20, check that ADER is 00. 6. Press the [MENU/NO] button to stop playback, then press the Z button and take out the test disc (MDW-74/GA-1). CD Error Rate Check Procedure: 1. Load the check disc (TDYS-1). 2. Turn the [. AMS > ] knob to display "CPLAY1MODE" (C34). 3. Press the [YES] button to display "CPLAY1MID". 4. The display changes to "C = AD = )". 5. Check that the C1 error rate is below 20. 6. Press the [MENU/NO] button to stop playback, then press the Z button and take out the check disc (TDYS-1). 5-7-9. Self-Recording/playback Check Prepare a continuous recording disc using the unit to be repaired and check the error rate. Procedure: 1. Load a recordable disc (blank disc). 2. Turn the [ . AMS > ] knob to display "CREC 1MODE" (C35). 3. Press the [YES] button to display "CREC 1MID". 4. When recording starts, lights up " REC " and display "CREC 1 (@@@@)" (@@@@ is the address). 5. About 1 minute later, press the [MENU/NO] button to stop continuous recording. 6. Turn the [.AMS >] knob to display "CPLAY1MODE" (C34). 7. Press the [YES] button to display "CPLAY1MID". 8. "C = AD = )" will be displayed. 9. Check that the C1 error becomes below 20 and the AD error below 2. 10. Press the [MENU/NO] button to stop playback, then press the Z button and take out the disc.
A VC B Specified value : Below 10% offset value Offset value (%) = IA BI X 100 2 (A + B)
17. Press the [YES] button to display "EF CD CHECK" (C15). 18. Press the Z button and take out the check disc (TDYS-1). Checking Location: BD board (see page 30)
25
MDS-S9
5-8.
INITIAL SETTING OF ADJUSTMENT VALUE
5-10. TEMPERATURE COMPENSATION OFFSET ADJUSTMENT
Save the temperature data at that time in the non-volatile memory as 25 °C reference data.
Note: 1. Usually, do not perform this adjustment. 2. Perform this adjustment in an ambient temperature of 22 °C to 28 °C. Perform it immediately after the power is turned on when the internal temperature of the unit is the same as the ambient temperature of 22 °C to 28 °C. 3. When D101 has been replaced, perform this adjustment after the temperature of this part has become the ambient temperature.
Note: Mode which sets the adjustment results recorded in the non-volatile memory to the initial setting value. However the results of the temperature compensation offset adjustment will not change to the initial setting value. If initial setting is performed, perform all adjustments again excluding the temperature compensation offset adjustment. For details of the initial setting, refer to "5-5. Precautions for Adjustments" (See page 22) and execute the initial setting before the adjustment as required.
Procedure: . AMS > knob to display "ADJ CLEAR" (C28). 1. Turn the [ ] 2. Press the [YES] button. "Complete!" will be displayed momentarily and initial setting will be executed, after which "ADJ CLEAR" (C28) will be displayed.
5-9.
RECORDING AND DISPLAYING THE IOP INFORMATION
The IOP data can be recorded in the non-volatile memory. The IOP value on the optical pick-up label and the IOP value after the adjustment will be recorded. Recording these data eliminates the need to read the label on the optical pick-up. Recording Procedure: 1. Turn the [ . AMS > ] knob to display "Iop Write" (C05), and press the [YES] button. 2. The display becomes "Ref=@@@.@" (@ is an arbitrary number) and the numbers which can be changed will blink. 3. Input the IOP value on the optical pick-up label. To select the number : Turn the [ .AMS > ] knob. To select the digit : Press the [ . AMS > ] button. 4. When the [YES] button is pressed, the display becomes "Measu=@@@.@" (@ is an arbitrary number). 5. As the adjustment results are recorded for the step 4 value. Leave it as it is and press the [YES] button. 6. "Complete!!" will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become "Iop Write" (C05). Display Procedure: 1. Turn the [. AMS > ] knob to display "Iop Read"(C26). 2. "@@.@/##.#" is displayed and the recorded contents are displayed. @@.@ indicates the IOP value on the optical pick-up label. ##.# indicates the IOP value after adjustment 3. To end, press the [ . AMS > ] knob and [MENU/NO] button to display "Iop Read" (C26).
Procedure: 1. Turn the [ . AMS > ] knob to display "TEMP ADJUST" (C03). 2. Press the [YES] button to select the "TEMP ADJUST" mode. 3. "TEMP = [OK]" and the current temperature data will be displayed. 4. To save the data, press the [YES] button. When not saving the data, press the [MENU/NO] button. 5. When the [YES] button is pressed, "TEMP = SAVE" will be displayed and turned back to "TEMP ADJUST" (C03) display then. When the [MENU/NO] button is pressed, "TEMP ADJUST" (C03) will be displayed immediately. Specified Value: The "TEMP = " should be within "E0 - EF", "F0 - FF", "00 0F", "10 - 1F" and "20 - 2F".
5-11. LASER POWER ADJUSTMENT
Check the type and IOP value of the optical pick-up before adjustments. (Refer to 5-4. How to Distinguish between Optical pick-up KMS-260B and KMS-260E (see page 22), 5-9. Recording and Displaying the IOP Information) Connection:
laser power meter
Optical pick-up objective lens
digital voltmeter BD board CN105 pin 1 (I+3V) CN105 pin 2 (IOP)
+
Procedure: 1. Set the laser power meter on the objective lens of the optical pick-up. (When it cannot be set properly, press the m button and M button to move the optical pickup) Connect the digital voltmeter to CN105 pin 1 (I+3V) and CN105pin 2 (IOP) on the BD board. 2. Turn the [.AMS >] knob to display "LDPWR ADJUST" (C04). (Laser power : For adjustment) 3. Press the [YES] button once to display "LD 0.9 mW $ ". 4. Turn the [ . AMS > ] knob so that the reading of the laser power meter becomes 0.85 to 0.91 mW. Press the [YES] button after setting the range knob of the laser power meter becomes 10 mW, and save the adjustment results. ("LD SAVE $ " will be displayed for a moment) 5. Then "LD 7.0 mW $ " will be displayed.
26
MDS-S9
6. Turn the [ .AMS >] knob so that the reading of the laser power meter becomes 6.9 to 7.1 mW, press the [YES] button to save it. ("LD SAVE $ " will be displayed for a moment)
Note: Do not perform the emission with 7.0 mW more than 15 seconds continuously. 7. Then, turn the [ .AMS > ] knob to display "LDPWR
4. After "Complete!" is displayed momentarily, the display changes to "Iop 7.0mW". 5. After the display changes to "Iop=yysave?", press the [YES] button. 6. When "Complete!" is displayed, it means that Iop NV saving has been completed.
CHECK" (C13). 8. Press the [YES] button once to display "LD 0.9mW$ ". Check that the reading of the laser power meter become 0.85 to 0.91 mW (KMS-260B) or 0.90 to 0.96 mW (KMS-260E). 9. Press the [YES] button once more to display "LD 7.0mW$ ". Check that the reading the laser power meter and digital voltmeter satisfy the specified value. Note down the digital voltmeter reading value. Specified Value: Laser power meter reading : 7.0 ± 0.1 mW (KMS-260B) 7.25 ± 0.05 mW (KMS-260E) Digital voltmeter reading : Value on the optical pick-up label ±10%
(Optical pick-up label)
KMS260B or E 20101 B0825
5-13. TRAVERSE ADJUSTMENT
Note 1: Data will be erased during MO reading if a recorded disc is used in this adjustment. Note 2: If the traverse waveform is not clear, connect the oscilloscope as shown in the following figure so that it can be seen more clearly. oscilloscope (DC range)
BD board CN105 pin 4 (TE) CN105 pin 6 (VC)
330 k
+
10 pF
For details of the method for checking this value, refer to "5-9. Recording and Displaying the IOP Information"
Connection:
oscilloscope (DC range) BD board CN105 pin 4 (TE) CN105 pin 6 (VC)
+
lOP=82.5 mA in this case lOP (mA) = Digital voltmeter reading (mV)/1 ()
V: 0.1 V/div H: 10 ms/div
10. Press the [MENU/NO] button to display "LDPWR CHECK" (C13) and stop the laser emission. (The [MENU/NO] button is effective at all times to stop the laser emission) 11. Turn the [ . AMS > ] knob to display "Iop Write" (C05). 12. Press the [YES] button. When the display becomes Ref=@@@.@ (@ is an arbitrary number), press the [YES] button to display "Measu=@@@.@" (@ is an arbitrary number). 13. The numbers which can be changed will blink. Input the IOP value noted down at step 9. To select the number : Turn the [ .AMS > ] knob. To select the digit : Press the [ .AMS > ] knob. 14. When the [YES] button is pressed, "Complete!!" will be displayed momentarily. The value will be recorded in the nonvolatile memory and the display will become "Iop Write" (C05).
Note: After step 9, each time the [YES] button is pressed, the display will be switched "LD 0.7mW$ ", "LD 6.2mW$ ", and "LD WP $ ". Nothing needs to be performed here.
Procedure: 1. Connect an oscilloscope to CN105 pin 4 (TE) and CN105 pin 6 (VC) on the BD board. 2. Load a disc (any available on the market). (Refer to Note 1) 3. Press the M button to move the optical pick-up outside the pit. 4. Turn the [. AMS > ] knob to display "EF MO ADJUST" (C07). 5. Press the [YES] button to display "EFB = MO-R". (Laser power READ power/Focus servo ON/tracking servo OFF/spindle (S) servo ON) 6. Turn the [ .AMS > ] knob so that the waveform of the oscilloscope becomes the specified value. (When the [.AMS>] knob is turned, the of "EFB= " changes and the waveform changes) In this adjustment, waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible. (Read power traverse adjustment)
Traverse Waveform
Adjustment Location: BD board (see page 30)
A
5-12. Iop NV SAVE
Write the reference values in the nonvolatile memory to perform "Iop compare". As this involves rewriting the reference values, do not perform this procedure except when adjusting the laser power during replacement of the optical pick-up and when replacing the IC102. Otherwise the optical pick-up check may deteriorate.
Note: Perform this function with the optical pick-up set at room temperature.
VC B Specification A = B
7. Press the [YES] button and save the result of adjustment to the non-volatile memory ("EFB = SAVE" will be displayed for a moment. Then "EFB = MO-W" will be displayed).
Procedure: 1. Turn the [.AMS >] knob to display "Iop NV Save" (C06). 2. Press the [YES] button and display "Iop [stop]". 3. After the display changes to "Iop =xxsave?", press the [YES] button.
27
MDS-S9
8. Turn the [.AMS > knob so that the waveform of the ] oscilloscope becomes the specified value. (When the [.AMS>] knob is turned, the of "EFB= " changes and the waveform changes) In this adjustment, waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible. (Write power traverse adjustment)
Traverse Waveform
18. Press the [YES] button, display "EFB = SAVE" for a moment and save the adjustment results in the non-volatile memory. Next "EF CD ADJUST" (C08) will be displayed. 19. Press the Z button and take out the check disc (TDYS-1). Adjustment Location: BD board (see page 30)
5-14. FOCUS BIAS ADJUSTMENT
A
VC B Specification A = B
9. Press the [YES] button, and save the adjustment results in the non-volatile memory. ("EFB = SAVE" will be displayed for a moment) 10. "EFB = MO-P" will be displayed. The optical pick-up moves to the pit area automatically and servo is imposed. 11. Turn the [ .AMS > ] knob until the waveform of the oscilloscope moves closer to the specified value. In this adjustment, waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible.
Traverse Waveform
A VC B Specification A = B
Procedure: 1. Load the continuously-recorded disc. (Refer to "5-6. USING THE CONTINUOUSLY RECORDED DISC" (See page 23)) 2. Turn the [ . AMS > ] knob to display "CPLAY1MODE" (C34). 3. Press the [YES] button to display "CPLAY1MID". 4. Press the [MENU/NO] button when "C = AD = )" is displayed. 5. Turn the [ . AMS > ] knob to display "FBIAS ADJUST" (C09). 6. Press the [YES] button to display " / a= T". The first four digits indicate the C1 error rate, the two digits after "/ " indicate ADER, and the 2 digits after "a =" indicate the focus bias value. 7. Turn the [ . AMS > ] knob in the clockwise and find the focus bias value at which the C1 error rate becomes about 220 (refer to Note 2). 8. Press the [YES] button to display " / b= T". . ] 9. Turn the [ AMS> knob in the counterclockwise and find the focus bias value at which the C1 error rate becomes about 220. 10. Press the [YES] button to display " / c= T". 11. Check that the C1 error rate is below 20 and ADER is 00. Then press the [YES] button. 12. If the "( )" in " - - ( )" is above 20, press the [YES] button. If below 20, press the [MENU/NO] button and repeat the adjustment from step 2. 13. Press the Z button and take out the disc.
Note 1: The relation between the C1 error and focus bias is as shown in the following figure. Find points A and B in the following figure using the above adjustment. The focal point position C is automatically calculated from points A and B. Note 2: As the C1 error rate changes, perform the adjustment using the average vale.
12. Press the [YES] button, and save the adjustment results in the non-volatile memory. ("EFB = SAVE" will be displayed for a moment) Next "EF MO ADJUST" (C07) is displayed. The disc stops rotating automatically. 13. Press the Z button and take out the disc. 14. Load the check disc (TDYS-1). 15. Turn the [ . AMS > ] knob to display "EF CD ADJUST" (C08). 16. Press the [YES] button to display "EFB = CD". Servo is imposed automatically. 17. Turn the [ . AMS > ] knob so that the waveform of the oscilloscope moves closer to the specified value. In this adjustment, waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible.
Traverse Waveform
C1 error about 220
Focus bias value B C A
A VC B Specification A = B
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MDS-S9
5-15. ERROR RATE CHECK
5-15-1. CD Error Rate Check Procedure: 1. Load the check disc (TDYS-1). 2. Turn the [ . AMS > ] knob to display "CPLAY1MODE" (C34). 3. Press the [YES] button twice and display "CPLAY1MID". 4. The display changes to "C = AD = )". 5. Check that the C1 error rate is below 20. 6. Press the [MENU/NO] button to stop playback, then press the Z button and take out the check disc (TDYS-1). 5-15-2. MO Error Rate Check Procedure: 1. Load the continuously-recorded disc. (Refer to "5-6. USING THE CONTINUOUSLY RECORDED DISC" (See page 23)) 2. Turn the [ . AMS > ] knob to display "CPLAY1MODE" (C34). 3. Press the [YES] button to display "CPLAY1MID". 4. The display changes to "C = AD = )". 5. If the C1 error rate is below 20, check that ADER is 00. 6. Press the [MENU/NO] button to stop playback, then press the Z button and take out the disc.
5-17. AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT
Be sure to perform this adjustment when the optical pick-up is replaced. If the adjustment results becomes "Adjust NG!", the optical pickup may be faulty or the servo system circuits may be abnormal. 5-17-1. CD Auto Gain Control Output Level Adjustment Procedure: 1. Load the check disc (TDYS-1). 2. Turn the [.AMS>] knob to display "AG Set (CD)" (C11). 3. When the [YES] button is pressed, the adjustment will be performed automatically. "Complete!!" will then be displayed momentarily when the value is recorded in the non-volatile memory, after which the display changes to "AG Set (CD)" (C11). 4. Press the