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amplifier
MiniDisc Audio System
MICRO HiFi COMPONENT SYSTEM
Service Manual
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HCD-CL5MD
SERVICE MANUAL
Ver 1.0 2001. 02
AEP Model UK Model E Model Australian Model
HCD-CL5MD is the tuner, deck, CD, MD and amplifier section in CHC-CL5MD.
Model Name Using Similar Mechanism CD SECTION CD Mechanism Type Base Unit Type Optical Pick-up Type Model Name Using Similar Mechanism MD SECTION TAPE DECK SECTION MD Mechanism Type Optical Pick-up Type Model Name Using Similar Mechanism Tape Transport Mechanism Type
NEW CDM63B BU-30BD61 A-MAX.3 HCD-ZX50MD MDM-7B KMS-260B/K1NP NEW TCM-230ASR41CL
SPECIFICATIONS
Amplifier section AEP model: DIN power output (Rated): 40 + 40 watts (6 ohms at 1 kHz, DIN) Continuous RMS power output (Reference): 50 + 50 watts (6 ohms at 1 kHz, 10% THD) Music power output (Reference): 95 + 95 watts (6 ohms at 1 kHz, 10% THD) Other models: DIN power output (Rated): 40 + 40 watts (6 ohms at 1 kHz, DIN) Continuous RMS power output (Reference): 50 + 50 watts (6 ohms at 1 kHz, 10% THD) Inputs VIDEO (AUDIO) IN (phono jacks): voltage 250 mV, impedance 47 kilohms CD DIGITAL IN (Supported sampling frequencies: 32 kHz, 44.1 kHz and 48 kHz) Outputs PHONES (stereo minijack): accepts headphones of 8 ohms or more. SPEAKER: accepts impedance of 6 to 16 ohms. CD player section System Laser Compact disc and digital audio system Semiconductor laser (=780 nm) Emission duration: continuous Max. 44.6 µW* * 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. 20 Hz 20 kHz (±0.5 dB)
Laser output
Frequency response
-- Continued on next page --
MICRO HiFi COMPONENT SYSTEM
9-929-583-11
2001B1600-1 © 2001.2
Sony Corporation
Audio Entertainment Group General Engineering Dept.
HCD-CL5MD
MD deck section System Laser
Sampling frequency Frequency response Tape deck section Recording system Frequency response
MiniDisc digital audio system Semiconductor laser (=780 nm) Emission duration: continuous 44.1 kHz 20 Hz 20 kHz (±0.5 dB) 4-track 2-channel stereo 40 13,000 Hz (±3 dB), using Sony TYPE I cassettes
Tuner section FM stereo, FM/AM superheterodyne tuner FM tuner section Tuning range 87.5 108.0 MHz (50 kHz step) Aerial FM lead aerial Aerial terminals 75 ohms unbalanced Intermediate frequency 10.7 MHz AM tuner section Tuning range AEP model: 531 1,602 kHz (with the interval set at 9 kHz) Other models: 531 1,602 kHz (with the interval set at 9 kHz) 530 1,710 kHz (with the interval set at 10 kHz) Aerial AM loop aerial External aerial terminals Intermediate frequency 450 kHz
General Power requirements AEP model: 230 V AC, 50/60 Hz Australian and New Zealand models: 230 240 V AC, 50/60 Hz Other models: 120 V, 220 V, 230 240 V AC, 50/60 Hz Adjustable with voltage selector Power consumption AEP model: 100 watts 0.5 watts (at the Power Saving Mode) Other models: 100 watts Dimensions (w/h/d) incl. projecting parts and controls Amplifier/Tuner/Tape/MD/CD section: Approx. 215 × 285 × 421 mm Speaker: Approx. 210 × 285 × 260 mm Mass Amplifier/Tuner/Tape/MD/CD section: Approx. 8.6kg Design and specifications are subject to change without notice.
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HCD-CL5MD
SELF-DIAGNOSIS FUNCTION
The self-diagnosis function consists of error codes for customers which are displayed automatically when errors occur, and error codes which show the error history in the test mode during servicing. For details on how to view error codes for the customer, refer to the following box in the instruction manual. For details on how to check error codes during servicing, refer to the following "Procedure for using the SelfDiagnosis Function (Error History Display Mode)".
Self-diagnosis display
This system has a Self-diagnosis display function to let you know if there is a system malfunction. The display shows a code made up of three letters and a message alternately to show you the problem. To solve the problem refer to the following list. If any problem persists, consult your nearest Sony dealer.
C11/Protected
C13/Read Error
The MD deck cannot read the disc information properly. cRemove the MD once, then insert it again.
C14/Toc Error
The MD deck cannot read the disc information properly. cReplace the MD. cErase all the recorded contents of the MD using the All Erase function (Refer to Operating Instruction on page 27).
C41/Cannot Copy
The MD is protected against erasure. cRemove the MD and slide the tab to close the slot (Refer to Operating Instruction on page 17).
C12/Cannot Copy
You tried to record a CD or MD with a format that the system does not support, such as a CD-ROM. cRemove the disc and turn off the system once, then turn it on again.
C13/REC Error
The sound source is a copy of a commercially available music software, or you tried to record a CD-R (Recordable CD). cThe Serial Copy Management System prevents making a digital copy (Refer to Operating Instruction on page 48). You cannot record a CD-R.
E0001/MEMORY NG
Recording could not be performed properly. cMove the system to a stable place, and start recording over from the beginning. The MD is dirty or scratched, or the MD does not meet the standards. cReplace the MD and start recording over from the beginning.
There is an error in the internal data that the system needs in order to operate. cConsult your nearest Sony dealer.
E0101/LASER NG
There is a problem with the optical pickup. cThe optical pickup may have failed. Consult your nearest Sony dealer.
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 other modes are entered accidentally, press the MENU/NO button to exit the mode. 1. 2. 3. 4. 5. 6. 7. 8. 9. Connect the mains lead to the mains while pressing the DIMMER , FUNCTION , and x buttons together, then release the DIMMER, FUNCTION , and x buttons simultaneously. While the test mode is set. "[Check]" will be displayed. Move ./> left and right to display "[Service]" and press the ENTER/YES button. Move ./> left and right to display "Err Display". Press the ENTER/YES button to enter the error history mode. "op rec tm" will be displayed. Select the item to be displayed or executed using ./> . Press the REC MODE button to display the selected item. Press the REC MODE button another time to return to step 4. Pressing the MENU/NO button displays "Err Display" and exits the error history display mode. To exit the test mode, press the REPEAT button. This sets the standby state and ends the test mode.
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HCD-CL5MD
ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS
Selecting the Test Mode Display op rec tm History Displays the total recording time. When the total recording time is more than 1 minute, displays the hour and minute When less than 1 minute, displays "Under 1 min" The display time is the time the laser is set to high power, which is about 1/4 of the actual recording time. Displays the total playback time. When the total playback time is more than 1 minute, displays the hour and minute When less than 1 minute, displays "Under 1 min" Displays the total rotating time of the spindle motor. When the total rotating time is more than 1 minute, displays the hour and minute When less than 1 minute, displays "Under 1 min" Displays the total number of retry errors during recording and playback Displays "r xx p yy". xx is the number of errors during recording. yy is the number of errors during playback. This is displayed in hexadecimal from 00 to FF. Displays the total number of errors Displays "total xx". This is displayed in hexadecimal from 00 to FF. Displays the past ten errors. Displays "0x ErrCd@@". X is the history number. The younger the number, the more recent is the history (00 is the latest). @@ is the error code. Select the error history number using ./> . Displays the past five retry addresses. Displays "xx ADRS yyyy", xx is the history number, yyyy is the cluster with the retry error. Select the error history number using ./> . Mode for erasing the error and retry address histories Procedure 1. Press the REC MODE button when displayed as "er refresh". 2. Press the ENTER/YES button when the display changes to "er refresh?". When "complete!" is displayed, it means erasure has completed. Be sure to check the following after executing this mode. *Data has been erased. *Perform recording and playback, and check that the mechanism is normal. Mode for erasing the total time of op rec tm, op play tm. These histories are based on the time of replacement of the optical pick-up. If the optical pick-up has been replaced, perform this procedure and erase the history. Procedure 1. Press the REC MODE button when displayed as "op change". 2. Press the ENTER/YES button when the display changes to "op change?". When "Complete!" is displayed, it means erasure has completed. Mode for erasing the total spdl rp tm time These histories are based on the time of replacement of the spindle motor. If the spindle motor has been replaced, perform this procedure and erase the history. Procedure 1. Press the REC MODE button when displayed as "spdl change" 2. Press the ENTER/YES button when the display changes to "spdl change?" When "Complete!" is displayed, it means erasure has completed.
op play tm
spdl rp tm
retry err
total err
err history
retry adrs
er refresh
op change
spdl change
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HCD-CL5MD
Table of Error Codes
Error Code 10 12 20 21 22 23 24 30 31 40 41 42 43 50 51 Could not load Loading switches combined incorrectly Timed out without reading the top of PTOC Could read top of PTOC, but detected error Timed out without accessing UTOC Timed out without reading UTOC Error in UTOC Could not start playback Error in sector Retry cause generated during normal recording Retried in DRAM overflow Retry occurred during TOC writing Retry aborted during S.F editing Other than access processing, and could not read address. Focus NG occurred and overran. Description
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HCD-CL5MD
TABLE OF CONTENTS 1. SERVICING NOTES ······················································· 7 2. GENERAL ·········································································· 9 3. DISASSEMBLY
3-1. Top Panel, Side Panel ·················································· 11 3-2. Cassette Mechanism ···················································· 12 3-3. Front Panel ·································································· 12 3-4. Panel Board ································································· 13 3-5. MD Mechanism ··························································· 13 3-6. Over Light Head (HR901), BD (MD) Board ·············· 14 3-7. Holder Assy ································································· 14 3-8. Loading Motor Assy (M103) ······································· 15 3-9. Sled Motor Assy (M102) ············································· 15 3-10. MD Optical Pick-Up (KMS-260B/K1NP) ·················· 16 3-11. Spindle Motor Assy ····················································· 16 3-12. Back Panel, Main Board ·············································· 17 3-13. Amp Board, Power Transformer ································· 17 3-14. CD Mechanism ···························································· 18 3-15. Relay Board ································································· 18 3-16. CD Base Unit (BU-30BD61) ······································ 19 3-17. CD Optical Pick-Up (A-MAX.3) ································ 19 3-18. BD (CD) Board ··························································· 20 3-19. Driver Board ································································ 20 3-20. Fitting Base (Stabilizer) Assy, Tray Assy ···················· 21 3-21. Tray Sensor Board ······················································· 21 3-22. Slider (Loading), Gear (Slider) ··································· 22 3-23. Stocker Assy ································································ 22 3-24. Disc Sensor Board ······················································· 23 3-25. IN OUT SW Board ······················································ 23 3-26. Motor Assy (M721), Motor Board ······························ 24 7-2. Block Diagram CD Section ·································································· 47 MD Section ································································· 48 Syscon Section ···························································· 49 Main Section ······························································· 50 7-3. Printed Wiring Board Main Section ··························· 51 7-4. Schematic Diagram Main Section (1/2) ····················· 52 7-5. Schematic Diagram Main Section (2/2) ····················· 53 7-6. Schematic Diagram CD Section ································· 54 7-7. Printed Wiring Board CD Section ······························ 55 7-8. Schematic Diagram Driver Section ···························· 56 7-9. Printed Wiring Board Driver Section ························· 57 7-10. Schematic Diagram MD Section (1/2) ······················· 58 7-11. Schematic Diagram MD Section (2/2) ······················· 59 7-12. Printed Wiring Board MD Section ····························· 60 7-13. Printed Wiring Board Digital Section ························ 61 7-14. Schematic Diagram Digital Section (1/2) ·················· 62 7-15. Schematic Diagram Digital Section (2/2) ·················· 63 7-16. Schematic Diagram TC Section ································· 64 7-17. Printed Wiring Board TC Section ······························· 65 7-18. Schematic Diagram AMP Section ······························ 66 7-19. Printed Wiring Board AMP Section ··························· 67 7-20. Schematic Diagram Panel Section ····························· 68 7-21. Printed Wiring Board Panel Section ··························· 69 7-22. Schematic Diagram Trans Section ····························· 70 7-23. Printed Wiring Board Trans Section ··························· 71 7-24. Schematic Diagram Power Section ···························· 72 7-25. Printed Wiring Board Power Section ························· 73 7-26. IC Pin Functions ·························································· 75 7-27. IC Block Diagrams ······················································ 85
8. EXPLODED VIEWS
8-1. 8-2. 8-3. 8-4. 8-5. 8-6. 8-7. 8-8. Side Panel, Back Panel Section ··································· 89 Front Panel Section ····················································· 90 Chassis Section ···························································· 91 MD Mechanism Deck Section-1 ································· 92 MD Mechanism Deck Section-2 ································· 93 CD Mechanism Deck Section-1 ·································· 94 CD Mechanism Deck Section-2 ·································· 95 Base Unit Section ························································ 96
4. TEST MODE ···································································· 25 5. MECHANICAL ADJUSTMENTS ····························· 30 6. ELECTRICAL ADJUSTMENTS ······························· 30 7. DIAGRAMS
7-1. Circuit Boards Location ·············································· 45
9. ELECTRICAL PARTS LIST ······································· 97
6
HCD-CL5MD 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. FOR CD NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens. FOR MD 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. Laser component in this product is capable of emitting radiation exceeding the limit for Class 1. Model AEP, UK models Australian model Other models Power Voltage Incdication AC: 230 V 50/60 Hz 100 W AC: 230 240V 50/60 Hz 100 W AC: 120 V, 220 V, 230 240V 50/60 Hz 100 W MODEL IDENTIFICATION Back Panel
Power Voltage Indicator
To inspect the printed circuit boards, use the following jigs. · Extension jig to inspect the DIGITAL board This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior. This caution label is located inside the unit. Jig for extension between DIGITAL board CN1001 and MAIN board CN701 Part code number: J-2501-019-A 1 pc 25 pins with 1.25 mm · Extension jig to inspect the BD (CD) board (RELAY board) Jig for extension between RELAY board CN2 and MAIN board CN201 Part code number: J-2501-019-A 1 pc 25 pins with 1.25 mm
SAFETY-RELATED COMPONENT WARNING!!
CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. 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. Flexible Circuit Board Repairing · Keep the temperature of 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.
7
HCD-CL5MD
JIG FOR CHECKING BD (MD) BOARD WAVEFORM
The special jig (J-2501-196-A) is useful for checking the waveform of the BD (MD) board. The names of terminals and the checking items to be performed are shown as follows. GND I+3V IOP TE VC RF FE : Ground : For measuring IOP (Check the deterioration of the optical pick-up laser) : For measuring IOP (Check the deterioration of the optical pick-up laser) : TRK error signal (Traverse adjustment) : Reference level for checking the signal : RF signal (Check jitter) : Focus error signal
CN105
IOP TE I+3V GND FE VC RF
1 I+3V IOP GND TE FE VC RF 7 I+3V Iop GND TE FE VC RF
for MDM-7B
8
HCD-CL5MD SECTION 2 GENERAL
1 2 3 4 5
This section is extracted from instruction manual.
123 4
6 wh 7 wg wf wd ws wa w; ql 8 9 0 qa qs qd wg wf wd ws wa w; ql qk qj wh 5 6 7 8 9 0 qa qs qd qf qg qh
qk
qj
qhqg qf
BASS/TREBLE wf (40) CD 1 3 qj (11) CD 1 3 Z qj (9) CD disc tray qk (9) CD NX qs (9) DIMMER 5 (7) DISPLAY wg (8, 12, 16) Display window 3 ENTER/START ws (17, 38) ENTER/YES 7 (8, 11, 15, 20, 25, 34, 42) FUNCTION qh (9, 14, 17, 25, 37) GROOVE w; (40) MD insertion slot wd (14) MD REC ws (19) MD NX qf (14) MENU/NO 6 (24) MUSIC MENU wf (41)
BUTTON DESCRIPTIONS
PHONES jack qd PLAY MODE/DIRECTION wa (9, 14, 17, 37) REC MODE ws (20) Remote sensor wh REPEAT ql (10, 14) STEREO/MONO ql (35) SYNCHRO MODE ws (17) Tape deck lid 2 (37) TAPE REC PAUSE/START ws (39) TAPE nN qg (37) TUNER/BAND qa (34) VOLUME 8
CHECK 8 (11, 15) CLEAR qs (11, 15) CLOCK/TIMER SELECT 2 (42) CLOCK/TIMER SET 3 (8, 42) DBFB wh (40) DIMMER wd (7) DISC SKIP 9 (10) DISPLAY qk (8, 12, 16) ENTER/YES qa (8, 11, 15, 20, 25, 34, 42) FUNCTION qg (9, 14, 17, 25, 37) GROOVE qh (40) MENU/NO wa (24) MUSIC MENU 6 (41)
NAME EDIT/CHARACTER ws (12, 25, 36) REPEAT 7 (10, 14) SCROLL wg (13, 26) SLEEP 1 (41) SURROUND 5 (40) TUNER/BAND wf (34) VOL +/ qj
BUTTON DESCRIPTIONS
?/1 1 ./> 4 Z9 x0 m/M wf +/ wf
@/1 4 N q; x q; X q; M qd > qf . ql m w;
9
HCD-CL5MD
Setting the time
1 Turn on the system. 2 Press CLOCK/TIMER SET on the
remote.
Saving the power in standby mode
Press DISPLAY repeatedly when the system is off. Each time you press the button, the system switches cyclically as follows:
Proceed to step 5 when you set the clock for the first time.
3 Turn ./> (or press . or > on
the remote) to select "CLOCK SET?".
Demonstration t Clock display t Power Saving Mode
To cancel the Power Saving Mode
4 Press ENTER/YES. 5 Turn ./> (or press . or > on
the remote) to set the hour.
Press DISPLAY once to show the demonstration, twice to show the clock display
Tip
6 Press ENTER/YES or M.
The minute indication flashes.
?/1 indicator lights up even in the Power Saving Mode.
7 Turn ./> (or press . or > on
the remote) to set the minute.
8 Press ENTER/YES.
The clock starts working.
If you made a mistake
Press m or M repeatedly until the incorrect item flashes, then set it again.
To change the preset time
Start over from step 1.
10
HCD-CL5MD SECTION 3 DISASSEMBLY
· The equipment can be removed using the following procedure.
Set Top panel, Side panel Cassette mechanism Front panel Panel board MD mechanism Over light head (HR901), BD (MD) board Holder assy Loading motor assy (M103) Sled motor assy (M102) MD optical pick-up (KMS-260B/K1NP) Spindle motor assy Disc sensor board IN OUT SW board Motor assy (M721), Motor board Back panel, Main board Amp board, Power transformer CD mechanism Relay board CD base unit (BU-30BD61) CD optical pick-up (A-MAX.3) BD (CD) board Driver board Fitting base (stabilizer) assy, Tray assy Tray sensor board Slider (loading), Gear (slider) Stocker assy
Note : Follow the disassembly procedure in the numerical order given.
3-1. TOP PANEL, SIDE PANEL
Note: Attach it so that it pressed down the Main board.
q; Screw (+BVTT 3 × 8) qs Side panel (L) (Remove in the direction of the arrow) qa Four screws (CASE 3 TP2)
qh Top panel (Remove in the direction of the arrow) qf Flact cable (9 core) (CN304) 1 Screw (+BVTT 3 × 8) qg Connector (CN305) 6 D.C. Fan 5 Two screws (+BVTP 3 × 8) 2 Two screws (+BVTT 3 × 8) 4 Heat sink, cover
qd Two screws (HEXAGON SOCKET TAPPING)
3 Connector (CN904)
7 Screw (+BVTT 3 × 8)
9 Side panel (R) (Remove in the direction of the arrow) 8 Four screws (CASE 3 TP2)
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HCD-CL5MD
3-2. CASSETTE MECHANISM
4 Two screws (+BVTP 3 × 8)
5 TC board
7 Flat cable (9 core)
9 Two screws
8 Cassette mechanism deck
1 Connector 3 Bracket (Cassette mechanism) 6 Two screws (+BVTP 2.6 × 8) 6 Screw (+BVTP 2.6 × 8) qs F/R belt qa Main belt 2 Screw (+BVTP 2.6 × 8) 2 Three screws (+BVTP 2.6 × 8) q; Motor
3-3. FRONT PANEL
1 Screw (+BVTP 3 × 8)
8 Front panel 4 Screw (+BVTP 3 × 8)
5 Two screws (HEXAGON SOCKET TAPPING)
3 Flact cable (25 core) (CN701) 7 Connector (CN701)
2 Screw (+BVTP 3 × 8)
5 Screw (+BVTP 3 × 8)
12
HCD-CL5MD
3-4. PANEL BOARD
4 Shield (MD)
3 Two screws (+BVTP 3 × 8)
8 Six screws (+BVTP 2.6 × 8) 9 Panel board 7 Four screws (+BVTP 2.6 × 8)
1 Two screws (+BVTP 2.6 × 8)
q; Two screws (+BVTP 2.6 × 8)
2 MD mechanism
qa Ring SW board
8 Eight screws (+BVTP 2.6 × 8)
6 Nut
5 Knob (vol)
3-5. MD MECHANISM
3 Two screws (+BVTP 3 × 8)
4 Digital board
7 Two insulators
2 Flat cable (17 core) (CN103) 1 Flat cable (27 core) (CN102) 5 Two screws (+BVTTWH M3)
5 Two screws (+BVTTWH M3)
6 MD mechanism (MDM-7B)
7 Two insulators
13
HCD-CL5MD
3-6. OVER LIGHT HEAD (HR901), BD (MD) BOARD
2 Screw (P 1.7 × 6)
3 Over light head (HR901)
4 Remove the solder (four portions).
8 BD (MD) board 6 1 Connector (CN104)
7 Flexible board (CN101) 4 Remove the solder (five portions). 5 Screw (2 × 6)
3-7. HOLDER ASSY
2 Claw 5 Holder assy 3
4
1 Tension spring (holder)
14
HCD-CL5MD
3-8. LOADING MOTOR ASSY (M103)
1 Belt (loading)
2 Two screws (+PWH1.7 × 3.5)
3 Loading motor assy (M103)
3-9. SLED MOTOR ASSY (M102)
3 4 Slider (EJ) 6 Claw
7 Slider
5 Lever (head)
2 Guide (L) 1 Two screws (CZN2 × 6)
9 Two screws (+PWH1.7 × 3.5) 8 Lever (CHG)
q; Sled motor assy (M102)
15
HCD-CL5MD
3-10. MD OPTICAL PICK-UP (KMS-260B/K1NP)
qa MD Optical pick-up (KMS-260B/K1NP)
1 Flexible PWB
7 Main shaft
q; SL base 9 Screw (+P1.7 × 6)
8
6 Two screws (+KPT2 × 6)
4 Screw (CZN2 × 6)
5 Base (BU-A)
3 Gear (SD) 2 Screw (M1.7, TAPPING)
3-11. SPINDLE MOTOR ASSY
2 Spindle motor assy (M101)
1 Three screws (M1.7, TAPPING)
16
HCD-CL5MD
3-12. BACK PANEL, MAIN BOARD
3 Blacket (Heat sink) 5 Back panel 2 Two screws (+BVTP 3 × 8)
7 Tuner 1 Flat cable (15 core) (CN502) Main board 6 Two screws (+BVTP 3 × 8)
4 Thirteen screws (+BVTP 3 × 8)
9 Connector (CN701)
8 Two connector (CN101, CN251)
q; Main board
3-13. AMP BOARD, POWER TRANSFORMER
3 Four screws (+BVTT 4 × 8)
5 Two screws (+BVTP 3 × 16) 6 Three screws (+BVTP 3 × 8)
8 Two screws (+BVTP 3 × 8)
9 Heat sink
4 Power transformer
7 Amp board
2 Connector (CN902) 1 Connector (CN901)
q; Two screws (+BVTP 3 × 8)
qs Cord bushing
qa Sub power board
17
HCD-CL5MD
3-14. CD MECHANISM
5 CD mechanism deck (CDM63B)
3 Chassis assy
2 Two screws (+BVTP 3 × 8)
1 Three screws (+BVTP 3 × 8) 4 Four screws (+BVTP 3 × 8) Note: When installing the CD mechanism, the four bosses must be aligned with the specified positions.
3-15. RELAY BOARD
1 Flat cable (21 core) (CN792) 3 RELAY board 2 Two Screws (+BTTP M2.6)
18
HCD-CL5MD
3-16. CD BASE UNIT (BU-30BD61)
q; Insulator
9 Cone coil spring qa CD base unit (BU-30BD61) q; Two Insulators 4 Two coil springs (Insulators) 3 Two stoppers 1 Flat cable (22 core) (CN101) 8 Floating screw (DIA.12)
q; Insulator 7 Coil spring (Insulator) 6 Washer 5 Floating screw (PTPWH M2.6)
2 Two screws (BVTP2.6 × 8)
3-17. CD OPTICAL PICK-UP (A-MAX.3)
3 MD Optical pick-up (A-MAX.3)
1 Flat cable (16 core)
2 Sled shaft
19
HCD-CL5MD
3-18. BD (CD) BOARD
4 Gear (LA)
5 Gear (LB) 1 Flat cable (16 core) (CN102)
3 BD (CD) board 2 Remove the solder (four portions).
3-19. DRIVER BOARD
3 DRIVER board 1 Connector (CN703)
1 Connector (CN704)
1 Connector (CN702)
2 Screw (BTTP M2.6) 2 Screw (BTTP M2.6) 1 Connector (CN705)
20
HCD-CL5MD
3-20. FITTING BASE (STABILIZER) ASSY, TRAY ASSY
1 Two screws (+BTTP M2.6) 4 Fitting base (STABILIZER) assy
2
2 1 Two screws (+BTTP M2.6) 5 Tray assy
3 Three bosses 3 Three bosses
3-21. TRAY SENSOR BOARD
6 HOLDER (SENSOR) 2 Two screws (+BTTP M2.6) 5 TRAY SENSOR board
Cam 1 Rotate the cam, and lift up the stocker at the full. 4 Two screws (+BTTP M2.6) Stocker 3
21
HCD-CL5MD
3-22. SLIDER (LOADING), GEAR (SLIDER)
3 Two screws (+BTTP M2.6)
4 Bracket (retainer)
2 Bracket (retainer)
6 Slider (LOADING)
1 Two screws (+BTTP M2.6) 8 Two gears (SLIDER) 7 Two floating screws
5 Floating screw
3-23. STOCKER ASSY
3 Stocker assy
1 Screw (+BTTP M2.6) A
A
2 Slide the slider (BU.L), slider (BU.R) in the direction of arrow A at the full.
1 Screw (+BTTP M2.6)
22
HCD-CL5MD
3-24. DISC SENSOR BOARD
2 CD base unit assy
1 4 DISC SENSOR board
3 Two screws (+BTTP M2.6)
3-25. IN OUT SW BOARD
2 Two screws (+BTTP M2.6) 3 IN OUT SW board
1 Connector (CN704)
23
HCD-CL5MD
3-26. MOTOR ASSY (M721), MOTOR BOARD
1 Belt
2 Connector (CN702)
6
Motor board bottom view
7 Motor assy (M721)
4 Two screws (+BTTP M2.6) 5 Motor board
3 Remove two solders.
24
SECTION 4 TEST MODE
[CD Ship Mode] · This mode moves the optical pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair. Procedure: 1. Press ?/1 button to turn the set ON. 2. Press CD 1 button and FUNCTION button simultaneously. 3. After the "STANDBY" display blinks six times, a message "LOCK" is displayed on the fluorescent indicator tube, and the CD ship mode is set. [GC Test Mode] · This mode is used to check the software version, FL tube, LED, keyboard and VACS. Procedure: 1. Press three buttons x , DISPLAY , and CD 2 simultaneously. 2. LEDs and fluorescent indicator tube are all turned on. 3. When you want to enter the software version display mode, press CD 1 . The model number and destination are displayed. 4. Each time CD 1 is pressed, the display changes starting from MC version, GC version, CD version, CDD version, CDM version, BD version, ST version, TA version, TM version, TC version and MD version in this order, and returns to the model number and destination display. 5. Press CD 2 button, and the key check mode is activated. 6. In the key check mode, the fluorescent indicator tube displays "K 0 J 0 V 0". Each time a button is pressed, "K 0" value increases. However, once a button is pressed, it is no longer taken into account. "V 0" value increases like 1, 2, 3 ... if rotating VOLUME knob in "+" direction, or it decreases like 0, 9, 8 ... if rotating in "" direction. 7. Also when CD 3 is pressed after lighting of all LEDs and FL tubes, value of VACS appears. 8. To exit from this mode, press three buttons in the same manner as step 1, or disconnect the power cord. [MC Test Mode] · This mode is used to check operations of the respective sections of Amplifier, Tuner, CD and Tape. Procedure: 1. Press the ?/1 button to turn on the set. 2. Press the three buttons of x , DISPLAY and CD 3 simultaneously. 3. The "VOLUME" segment flashes. 4. Every pressing of BASS/TREBLE f changes the displays in the order of "GEQ MIN"t"GEQ FLAT"t"GEQ MAX" 5. When the VOLUME control knob is turned clockwise even slightly, the sound volume increases to its maximum and a message "VOLUME MAX" appears for two seconds, then the display returns to the original display. When the VOLUME control knob is turned counter-clockwise even slightly, the sound volume decreases to its minimum and a message "VOLUME MIN" appears for two seconds, then the display returns to the original display. In the test mode, the default-preset channel is called even when the TUNER is selected and an attempt is made to call the preset channel that has been stored in memory, by operating the Shuttle knob. (It means that the memory is cleared.) When a tape is inserted in Deck B and recording is started, the input source function selects VIDEO automatically. 9.
HCD-CL5MD
When x button is pressed to stop recording, the Tape (Deck) B is selected and tape is rewound using the m button, tape is rewound, tape is stops at around the record-starting position and playback of the recorded portion of the tape is started. If PAUSE is inserted even once during recording, tape is rewound to the position around the PAUSE position and is played back. 10. The cold reset is enforced at the same time. [CD Service Mode] · This mode can run the CD sled motor freely. Use this mode, for instance, when cleaning the optical pick-up. Procedure: 1. Press ?/1 button to turn the set ON. 2. Select the function "CD". 3. Press three buttons x , FUNCTION , and CD 2 simultaneously. 4. The CD service mode is selected. 5. With the CD in stop status, turn the shuttle knob clockwise to move the optical pick-up to outside track, or turn the shuttle knob counter-clockwise to inside track. 6. To exit from this mode, perform as follows: 1) Move the optical pick-up to the most inside track. 2) Press three buttons in the same manner as step 2.
Note: · Always move the optical pick-up to most inside track when exiting from this mode. Otherwise, a disc will not be unloaded. · Do not run the sled motor excessively, otherwise the gear can be chipped.
[CD Ship (Memory Clear) Mode] · Set the CD ship mode and set the default setup when shipped from the factory at the next AC power on. Procedure: 1. Press ?/1 button to turn the set ON. 2. Select the function "CD ". 3. Press three buttons x , FUNCTION and CD 1 simultaneously. 4. After the "STANDBY" display blinks six times, a message "LOCK" is displayed on the fluorescent indicator tube, and the CD ship mode is set. [CD/MD/TAPE Repeat 5 Times Limit Release Mode] · 5 times limit of repeating CD/MD/TAPE is released. Procedure: 1. Press ?/1 button to turn the set ON. 2. Press three buttons x , FUNCTION and CD 1Z . 3. 5 times limit of repeating CD/MD/TAPE is released. 4. Cold reset is performed at power off.
6.
7.
8.
25
HCD-CL5MD
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 MENU/NO button, and press the Z button after the disc stops rotating. 4-1-1. Recording laser emission mode and operating buttons · · · · · · · · Continuous recording mode (CREC 1MODE) (C35) Laser power check mode (LDPWR CHECK) (C13) Laser power adjustment mode (LDPWR ADJUS) (C04) Iop check (Iop Compare) (C27) Iop value nonvolatile writing (Iop NV Save) (C06) Traverse (MO) check (EF MO CHECK) (C14) Traverse (MO) adjustment (EF MO ADJUS) (C07) When pressing the MD REC button.
4-2. SETTING THE TEST MODE
The following are two methods of entering the test mode. Procedure: Connect the mains lead to the mains while pressing the DIMMER , FUNCTION , and x buttons together, then release the DIMMER , FUNCTION , and x buttons simultaneously. When the test mode is set, "[Check]" will be displayed. Move ./> to switch between the following three groups; ··· y Check y Service y Develop y ···. 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.
4-3. EXITING THE TEST MODE
Press the REPEAT button. The disc is ejected when loaded, and "Initialize" display blinks, and the STANDBY state is set.
4-4. BASIC OPERATIONS OF THE TEST MODE
Operate using the ./> , ENTER/YES button, REC MODE button, MENU/NO button.
Function name Function
MENU/NO button ENTER/YES button ./> (Left or Right) REC MODE button
Cancel or move to top hierarchy Set Select Set submenu
26
HCD-CL5MD
4-5. SELECTING THE TEST MODE
There are 26 types of test modes as shown below. The groups can be switched by moving ./> . After selecting the group to be used, press the ENTER/YES button. After setting a certain group, move the multi-stick to switche 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 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 ADJUS LDPWR ADJUS Iop Write Iop NV Save EF MO ADJUS EF CD ADJUS FBIAS ADJUS 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
Details
Mark
Check
Service
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 Focus, tracking gain adjustment (MO) Focus, tracking gain 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
· For details of each adjustment mode, refer to "6. Electrical Adjustments". For details of "Err Display", refer to "Self-Diagnosis Function" on page 3. · If a different mode has been selected by mistake, press the MENU/NO button, to exit that mode. · Modes with (X) 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 exit the mode immediately.
27
HCD-CL5MD
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 Move ./> and display "CPLAY1MODE"(C34). 3 Press the ENTER/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 ENTER/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. 2 When access completes, the display changes to "C = AD = ". Note : The numbers " " displayed show you error rates and ADER. 3. Ending the continuous playback mode 1 Press the MENU/NO button. The display will change to "CPLAY1MODE"(C34). 2 To remove the disc, press the Z button. 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 Move ./> and display "CREC 1MODE" (C35). 3 Press the ENTER/YES button to change the display to "CREC 1MID". 4 When access completes, the display changes to "CREC1 ( )" and REC lights up. Note : The numbers " " displayed shows you the recording position addresses. 2. Changing the parts to be recorded 1 When the ENTER/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. 2 When access completes, the display changes to "CREC 1( Note : The numbers " " displayed shows you the recording position addresses. 3. Ending the continuous recording mode 1 Press the MENU/NO button. The display changes to "CREC 1MODE" (C35 ) and REC goes off. 2 To remove the disc, press the Z button. 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 : Press 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 PLAY MD 7 J (FF) j (FR) PLAY MODE EJECT REPEAT 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 the spindle servo mode (CLV S y CLV A). Ejects the disc. Exits the test mode. (When No disc)
28
HCD-CL5MD
4-7. MEANINGS OF OTHER DISPLAYS
Contents Display LP2 LP4 (LED) SYNC LEVEL-SYNC OVER TOC REPEAT X1 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 CLV S CLV LOCK CLV A CLV UNLOCK Tracking offset cancel OFF When Lit Servo OFF Tracking servo ON Recording mode OFF CLV normal mode When Off
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 check. Procedure 1. Press the ENTER/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 step 1. 2. 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. 3. If a disk is loaded at step 2, the check will start automatically. 4. When "XX CHECK" is displayed, the item corresponding to XX will be performed. When "06 CHECK" completes, the disc loaded at step 2 will be ejected. "DISC IN" will be displayed. Load the check disc (MD) TDYS-1. 5. When the disc is loaded in step 4, the check will automatically be resumed from "07 CHECK". 6. 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 the other spindle motor, thread 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. If displayed as "INFORMATION", press the ENTER/YES button. 2. The software version will be displayed. 3. Press the MENU/NO button is lit to end this mode.
4-10. 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. Set the test mode. (Refer to 4-2.) 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 x button and Z button together. 4. Move ./> and select MDM-7B. 5. Press the REC MODE 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.
29
HCD-CL5MD
SECTION 5 MECHANICAL ADJUSTMENTS
SECTION 6 ELECTRICAL ADJUSTMENTS
DECK SECTION 0 dB=0.775V
Precaution 1. Clean the following parts with a denatured alcohol-moistened swab: record/playback heads pinch rollers erase head rubber belts capstan idlers 2. Demagnetize the record/playback head with a head demagnetizer. 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the rated power supply voltage unless otherwise noted. Torque Measurement
Mode FWD FWD back tension REV REV back tension FF/REW Torque meter CQ-102C Meter reading 3.04 6.96 N · m (31 to 71 g · cm) (0.43 0.98 oz · inch) 0.20 0.58 N · m (2 to 6 g · cm) (0.02 0.08 oz · inch) 3.04 6.96 N · m (31 to 71 g · cm) (0.43 0.98 oz · inch) 0.20 0.58 N · m (2 to 6 g · cm) (0.02 0.08 oz · inch) 6.97 14.02 N · m (71 to 143 g · cm) (0.98 1.99 oz · inch) 0.98 N · m or more (100 g or more) (3.53 oz or more) 0.98 N · m or more (100 g or more) (3.53 oz or more)
1. Demagnetize the record/playback head with a head demagnetizer. 2. Do not use a magnetized screwdriver for the adjustments. 3. After the adjustments, apply suitable locking compound to the parts adjusted. 4. The adjustments should be performed with the rated power supply voltage unless otherwise noted. 5. The adjustments should be performed in the order given in this service manual. (As a general rule, playback circuit adjustment should be completed before performing recording circuit adjustment.) 6. The adjustments should be performed for both L-CH and R-CH. 7. Switches and controls should be set as follows unless otherwise specified.
Tape P-4-A100 WS-48B Signal 10 kHz, 10 dB 3 kHz, 0 dB Used for Azimuth Adjustment Tape Speed Adjustment
CQ-102C
Record/Playback Head Azimuth Adjustment Procedure: 1. Mode : Playback
test tape P-4-A100 (10kHz, 10dB) main board CN301 Pin 1 (L-ch) Pin 3 (R-ch) set
CQ-102RC
CQ-102RC
CQ-201B
level meter
FWD tension
CQ-403A
+
REV tension
CQ-403R
2. Turn the adjustment screw and check output peaks. If the peaks do not match for L-CH and R-CH, turn the adjustment screw so that outputs match within 1 dB of peak.
L-CH peak
output level
within 1 dB
within 1dB
screw position
R-CH peak screw position
L-CH peak
R-CH peak
30
HCD-CL5MD
3. Mode: Playback
test tape P-4-A100 (10kHz, 10dB) main board CN301 Pin 1 (L-ch) Pin 2 (GND) L set R
Record Bias Adjustment Procedure:
oscilloscope
Pin 3 (R-ch) Waveform of oscilloscope
INTRODUCTION When set to the test mode performed in Tape Speed Adjustment, when the tape is rewound after recording, the "REC memory mode" which rewinds only the recorded portion and playback is set. This "REC memory mode" is convenient for performing this adjustment. During recording, the input signal FUNCTION will automatically switch to VIDEO. (After recording, press the m button without stopping will return to the position where recording was started.) 1. Press FUNCTION button to select VIDEO. (This step is not necessary if the above test mode has already been set.) 2. Insert a tape into deck, press the TAPE REC PAUSE/START button, and then press the Y button to start recording. 3. Mode: Record
VIDEO (AUDIO) IN 1) 315 Hz } 50 mV (23.8 dB) 2) 10 kHz AF OSC blank tape CS-123
in phase
45° good
90°
135°
180° wrong
4. After the adjustments, apply suitable locking compound to the parts adjusted. Adjustment Location: Record/Playback/Erase Head
attenuator
600
Tape Speed Check Note: Set the test mode using the following method and begin tape speed adjustment. Procedure: With the power turned ON, press the x button, ENTER/YES button, and DISC 3 button simultaneously. (The "VOLUME" on the fluorescent display tube will blink while in the test mode.) To exit the test mode, press the "/1 button. 1. Insert the WS-48B into deck. 2. Press the Y button of deck. 3. Check the reading of frequency counter becomes 3000 ± 15 Hz. Sample Value of Wow and flutter W.RMS (JIS) less than 0.3% (test tape: WS-48B)
set
4. Mode: Playback
recorded position level meter
set main board CN301 Pin 3 (R-ch) Pin 1 (L-ch)
5. Confirm playback the signal recorded in step 2 become adjustment level as follows. If these levels do not adjustment level, adjust the RV304 (L-CH) and RV354 (R-CH) on the TC board to repeat steps 3 and 4. Adjustment level: The playback output of 10 kHz level difference against 315 Hz reference should be 0 ± 0.5 dB. Adjustment Location: [TC BOARD]
RV304
RV354
RV304(Lch),RV354(Rch) Record Bias
31
HCD-CL5MD
Record Level Adjustment Procedure: INTRODUCTION When set to the test mode performed in Tape Speed Adjustment, when the tape is rewound after recording, the "REC memory mode" which rewinds only the recorded portion and playback is set. This "REC memory mode" is convenient for performing this adjustment. During recording, the input signal FUNCTION will automatically switch to VIDEO. (After recording, press the m button without stopping will return to the position where recording was started.) 1. Press FUNCTION button to select VIDEO. (This step is not necessary if the above test mode has already been set.) 2. Insert a tape into deck, press the TAPE REC PAUSE/START button, and then press the Y button to start recording. 3. Mode: Record
VIDEO (AUDIO) IN (J101) 315Hz 50 mV (23.8 dB) AF OSC 600 attenuator set blank tape CS-123
CD SECTION
Note :
1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10M impedance. 4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks. S-Curve Check
Oscilloscope BD (CD) board TP(FEO) TP(DVC)
Procedure : 1. Connect oscilloscope to TP (FEO). 2. Connect between TP (FEI) and TP (VC) by lead wire. 3. Turn Power switch on. 4. Load a disc (YEDS-18) and actuate the focus search. (In consequence of open and close the disc tray, actuate the focus search) 5. Confirm that the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 4 ±1 Vp-p.
S-curve waveform symmetry
4. Mode: Playback
recorded position level meter
A
set main board CN301 Pin 3 (R-ch) Pin 1 (L-ch)
within 4 ±1Vp-p B
7. After check, remove the lead wire connected in step 2.
Note : · Try to measure several times to make sure than the ratio of A : B or B : A is more than 10 : 7. · Take sweep time as long as possible and light up the brightness to obtain best waveform.
5. Confirm playback the signal recorded in step 2 become adjustment level as follows. If these levels do not adjustment level, adjust the RV301 (L-CH) and RV351 (R-CH) on the MAIN board to repeat steps 3 and 4. Adjustment level: CN301 playback level: 47.2 to 53.0 mV (24.3 to 23.3 dB) Adjustment Location: [MAIN BOARD]
RF Level Check
oscilloscope BD board TP(RFAC) TP(DVC)
IC301 RV351 Record Level (R ch)
CN301 RV301 Record Level (L ch)
Procedure : 1. Connect oscilloscope to TP (RFAC). 2. Turned Power switch on. 3. Load a disc (YEDS-18) and playback. 4. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not. 5. Measure the RFDC in the same way.
32
HCD-CL5MD
Note: Clear RF signal waveform means that the shape "" can be clearly distinguished at the center of the waveform.
RF signal waveform
VOLT/DIV : 200mV TIME/DIV : 500ns
Adjustment Location : [ BD (CD) BOARD ] -- SIDE B --
level : 1.1 ± 0.3Vp-p
E-F Balance (1 Track jump) Check
oscilloscope BD (CD) board TP (TEO) TP (DVC) +
TP (CE)
TP (RFDC) IC101 IC103 TP (RFAC) TP (XPCK)
Procedure: 1. Connect oscilloscope to TP (TEO) and TP (DVC) board. 2. Turned Power switch on. 3. Load a disc (YEDS-18) and playback the number five track. 4. Press the u button. (Becomes the 1track jump mode.) 5. Confirm that the level B and A (DC voltage) on the oscilloscope waveform.
1 track jump waveform
Center of waveform B 0V A (DC voltage)
level=1.3 ±0.6Vp-p
Symmetry
Specification level: A x 100=less than ±22% B 6. After check, remove the lead wire connected in step 1. RF PLL Free-run Frequency Procedure : 1. Connect frequency counter to test point (XPCK) with lead wire.
BD (CD) board frequency counter TP (XPCK) +
2. Turned Power switch on. 3. Put the disc (YEDS-18) in to play the number five track. Confirm that reading on frequency counter is 4.3218MHz.
33
HCD-CL5MD
MD SECTION 6-1. PARTS REPLACEMENT AND ADJUSTMENT
If malfunctions caused by Optical pick-up such as sound skipping are suspected, follow the following check.
Check before replacement
Start
6-6-2. Laser Power Check (See page 37) OK
NG
6-6-3. Iop Compare (See page 37) OK
NG
6-6-4. Auto Check (See page 38) OK
NG
Replace Optical pick-up or MDM-7B
Other faults are suspected. Check the threading mechanism, etc.
34
HCD-CL5MD
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 4-11. WHEN MEMORY NG IS DISPLAYED (See page 29)
Replace OP or IC195 NO
YES
6-7. INITIAL SETTING OF ADJUSTMENT VALUE (See page 40)
Replace IC101, IC195, or D101 NO
YES
6-9. TEMPERATURE COMPENSATION OFFSET ADJUSTMENT (See page 40)
Replace OP, IC190, or IC195 NO
YES
6-10. LASER POWER ADJUSTMENT (See page 40)
Replace OP, IC102, IC190, or IC195 NO
YES
6-11. Iop NV SAVE (See page 41)
Replace OP, IC101, IC151, or IC195 NO
YES
6-12. TRAVERSE ADJUSTMENT (See page 41) 6-13. FOCUS BIAS ADJUSTMENT (See page 42) 6-16. AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT (See page 43)
Replace OP NO
YES
OP change in Err Display mode Iop write
Replace the spindle motor NO 6-6-4. Auto Check (See page 38)
YES
Spindle change in Err Display mode
End adjustments
35
HCD-CL5MD
6-2. PRECAUTIONS FOR CHECKING LASER DIODE EMISSION
To check the emission of the laser diode during adjustments, never view directly from the top as this may lose your eye-sight.
6-3. PRECAUTIONS FOR USE OF OPTICAL PICKUP (KMS-260B)
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.
pick-up flexible board
laser tap
Optical pick-up flexible board
6-4. 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, exit the test mode. Perform the adjustments and checks in "group S" 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 (MD) TDYS-1 (Parts No. 4-963-646-01) · Test Disk (MDW-74/GA-1) (Parts No. 4-229-747-01) · Laser power meter LPM-8001 (Parts No. J-2501-046-A) or MD Laser power meter 8010S (Parts No. J-2501-145-A) · Oscilloscope (Measure after performing CAL of prove.) · Digital voltmeter · Thermometer · Jig for checking BD (MD) board waveform (Parts 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 Note on page 8.) 7) As the disc used will affect the adjustment results, make sure that no dusts nor fingerprints are attached to it.
Parts to be replaced Adjustment 6-7. Initial setting of adjustment values 6-8. Recording and displaying the Iop information 6-9. Temperature compensation offset adjustment 6-10. Laser power adjustment 6-11. Iop NV Save 6-12. Traverse adjustment 6-13. Focus bias adjustment 6-16. Auto gain control output level adjustment 6-6-4. Auto Check Optical Pick-up IC101 IC102 IC151 IC190 IC195 D101
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HCD-CL5MD
6-5. 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. Move ./> and display "CREC 1MODE"(C35). 3. Press the ENTER/YES button again to display "CREC 1MID". Display "CREC (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 data for the focus bias adjustment and error rate check. Note : · Be careful not to apply vibration during continuous recording.
Checking Procedure: 1. Set the laser power meter on the objective lens of the optical pick-up. (If cannot set properly, press the m or M button and move the optical pick-up.) Connect the digital volt meter to CN105 pin 1 (I+3V) and CN105 pin 2 (IOP). 2. Then, move ./> and display "LDPWR CHECK" (C13). 3. Press the ENTER/YES button once and display "LD 0.9 mW $ ". Check that the reading of the laser power meter become 0.84 to 0.92 mW. 4. Press the ENTER/YES button once more and display " LD 7.0 mW $ ". Check that the reading the laser power meter and digital volt meter satisfy the specified value. Specified Value : Laser power meter reading : 7.0 ± 0.2 mW Digital voltmeter reading : Optical pick-up displayed value ± 10% (Optical pick-up label)
KMS
6-6. CHECKS PRIOR TO REPAIRS
These checks are performed before replacing parts according to "approximate specifications" to determine the faulty locations. 6-6-1. Temperature Compensation Offset Check When performing adjustments, set the internal temperature and room temperature to 22 to 28ºC. Checks cannot be performed properly if performed after some time from power ON due to the rise in the temperature of the IC and diode, etc. So, perform the checks again after waiting some time. Checking Procedure: 1. Move ./> to display "TEMP CHECK"(C12). 2. Press the ENTER/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.) 6-6-2. Laser Power Check Before checking, check the Iop value of the optical pick-up. (Refer to 6-8. Recording and Displaying Iop Information.) Connection :
Laser power meter
260B 20101 H0576 R
(For details of the method for checking this value, refer to "6-8. Recording and Displaying Iop Information".)
Iop = 57.6 mA in this case Iop (mA) = Digital voltmeter reading (mV)/1 ()
5. Press the MENU/NO button and display "LDPWR CHECK" (C13) and stop the laser emission. (The MENU/NO button, it is effective at all times to stop the laser emission.) Note 1: After step 4, each time the ENTER/YES button is pressed, the display will be switched between "LD 0.7 mW $ ", "LD 6.2 mW $ ", and "LD Wp $ ". Nothing needs to be performed here. 6-6-3. Iop Compare The current Iop value at laser power 7 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. Procedure 1. Move ./> to display "Iop Compare"(C27). 2. Press the ENTER/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.
Optical pick-up objective lens
Digital volt meter
BD (MD) board CN105 pin 1 (I+3V) CN105 pin 2 (IOP)
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HCD-CL5MD
6-6-4. 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. Press the ENTER/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 step 1. 2. 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. 3. If a disk is loaded at step 2, the check will start automatically. 4. When "XX CHECK" is displayed, the item corresponding to XX will be performed. When "06 CHECK" completes, the disc loaded at step 2 will be ejected. "DISC IN" will be displayed. Load the check disc (MD) TDYS-1. 5. When the disc is loaded, the check will automatically be resumed from "07 CHECK". 6. 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 the other 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. 6-6-5. Other Checks All the following checks are performed by the Auto Check mode. They therefore need not be performed in normal operation. 6-6-6. Traverse Check 6-6-7. Focus Bias Check 6-6-8. C PLAY Check 6-6-9. Self-Recording/Playback Check 6-6-6. Traverse Check Connection :
Oscilloscope
6. Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not move ./> . (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 ENTER/YES button and display "EFB = MO-W". 8. Observe the waveform of the oscilloscope, and check that the specified value is satisfied. (Write power traverse checking) (Traverse Waveform)
A VC B
Specified value : Below 10% offset value Offset value (%) = IA BI X 100 2 (A + B)
9. Press the ENTER/YES button 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 move ./> . (Traverse Waveform)
A VC
BD (MD) board CN105 pin 4 (TE) CN105 pin 6 (VC) V : 0.5 V/div H : 10 ms/div Input : DC mode
Specified value : Below 10% offset value Offset value (%) = IA BI X 100 2 (A + B)
B
Checking Procedure: 1. Connect an oscilloscope to CN105 pin 4 (TE) and CN105 pin 6 (VC) of the BD (MD) board. 2. Load a test disc (MDW-74/GA-1). (Refer to Note 1.) 3. Press the M button, and move the optical pick-up outside the pit. 4. Move ./> and display "EF MO CHECK"(C14). 5. Press the ENTER/YES button and display "EFB = MO-R". (Laser power READ power/Focus servo ON/tracking servo OFF/ spindle (S) servo ON)
11. Press the ENTER/YES button display "EF MO CHECK" (C14). The disc stops rotating automatically. 12. Press the Z button and remove the disc. 13. Load the check disc (MD) TDYS-1. 14. Move ./> and display "EF CD CHECK" (C15). CD". 15. Press the ENTER/YES button and display "EFB = Servo is imposed automatically.
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HCD-CL5MD
16. Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not move ./> . (Traverse Waveform)
A VC B
6-6-8. C PLAY Check MO Error Rate Check Checking Procedure : 1. Load a continuously recorded test disc (MDW-74/GA-1). (Refer to "6-5. Using the Continuously Recorded Disc".) 2. Move ./> and display "CPLAY1MODE"(C34). 3. Press the ENTER/YES button and display "CPLAY1MID". 4. The display changes to "C1 = AD = ". 5. If the C1 error rate is below 20, check that ADER is 00. 6. Press the MENU/NO button, stop playback, press the Z button, and test disc. CD Error Rate Check Checking Procedure : 1. Load a check disc (MD) TDYS-1. 2. Move ./> and display "CPLAY1MODE"(C34). 3. Press the ENTER/YES button twice and display "CPLAY1 MID". 4. The display changes to "C1 = AD = ". 5. Check that the C1 error rate is below 20. 6. Press the MENU/NO button, stop playback, press the Z button, and the test disc. 6-6-9. Self-Recording/playback Check Prepare a continuous recording disc using the unit to be repaired and check the error rate. Checking Procedure : 1. Insert a recordable test disc (MDW-74/GA-1) into the unit. 2. Move ./> to display "CREC 1MODE"(C35). 3. Press the ENTER/YES button to display the "CREC 1MID". 4. When recording starts, " REC " is displayed, this becomes "CREC (@@@@)" (@@@@ is the address), and recording starts. 5. About 1 minute later, press the MENU/NO button to stop continuous recording. 6. Move ./> to display "CPLAY1MODE"(C34). 7. Press the ENTER/YES button to display "CPLAY1MID". AD = " will be displayed. 8. "C1 = 9. Check that the C1 error becomes below 20 and the AD error below 2. 10. Press the MENU/NO button to stop playback, and press the Z button and remove the disc.
Specified value : Below 10% offset value Offset value (%) = IA BI X 100 2 (A + B)
17. Press the ENTER/YES button and display "EF CD CHECK" (C15). 18. Press the Z button and remove the check disc (MD) TDYS-1. Note 1 : MO reading data will be erased during 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
BD (MD) board CN105 pin 4 (TE) CN105 pin 6 (VC)
330 k 10pF
6-6-7. Focus Bias Check Change the focus bias and check the focus tolerance amount. Checking Procedure : 1. Load a continuously recorded test disc (MDW-74/GA-1). (Refer to "6-5. Using the Continuously Recorded Disc".) 2. Move ./> and display "CPLAY1MODE"(C34). 3. Press the ENTER/YES button and display "CPLAY1MID". AD = " is 4. Press the MENU/NO button, when "C = displayed. 5. Move ./> and display "FBIAS CHECK"(C16). 6. Press the ENTER/YES button and 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 ENTER/YES button and display " / b = ". Check that the C1 error is below 100 and ADER is below 2. 8. Press the ENTER/YES button and display " / a = ". Check that the C1 error is below 100 and ADER is below 2. 9. Press the MENU/NO button, next press the Z button, and remove the test disc.
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HCD-CL5MD
6-7. INITIAL SETTING OF ADJUSTMENT VALUE
Note: Mode which sets the adjustment results recorded in the