Sony HCDMD-515 Service manual
HCD-MD515
RM-MD515
SERVICE MANUAL
HCD-MD515 is the Amplifier, CD player, MD
Deck and Tuner section and RM-MD515 is the
Detachable Controller section in DHC-MD515.
U.S and foreign patents licensed from Dolby Laboratories Licensing Corporation.
RM-MD515
CD
Section
MD
Section
US Model
AEP Model
UK Model
E Model
Tourist Model
HCD-MD515
Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM48-5BD29
Base Unit Name BU-5BD29
Optical Pick-up Name KSS-213BA/F-NP
Model Name Using Similar Mechanism NEW
MD Mechanism Type MDM-C1D
Base Unit Name MBU-C1
Optical Pick-up Name KMS-260A/J1N
SPECIFICATIONS
MINI Hi-Fi COMPONENT SYSTEM
MICROFILM
SELF DIA GNOSTICS
– 2 –
MD SECTION
CD SECTION
1. OPERATING THE ERROR HISTORY MODE
All operations are performed using the MULTI JOG dial
and PROGRAM button.
1. Enter the test mode for MD function. (*1)
2. Turn the MULTI JOG dial and display “ERR DP MODE”.
3. Press the ENTER/YES button, therefor enter the error history mode and change the display “total rec”.
4. Press the EDIT/NO button, therefor end the error history
mode and change the display “ERR DP MODE”.
(*1) See the “SECTION 4 TEST MODE” (page 21) for
detail of test mode.
2. OPERATING THE DISPLAYED HISTORYS
1. Turn the MULTI JOG dial and change the display of error
history contents.
2. Press the PROGRAM button and display error history function.
3. Press the PROGRAM button again and back the display of
error history contents.
Table 1.
Contents Function Display
total rec Total time of laser power high. r h
About 20% of total recording time.
total play Total time of playback. p h
retry error Total count of record and playback r p
retry error.
total error Total count of error. total
err history Error contents display of from 0 E (*2)
latest one“00” to last ten “09”.
(Turn the MULTI JOG dial and
change the error NO.)
err refresh Press the PROGRAM button and complete
(*3) clear the error histories memory
(*2) See table 1-1. for contents of each error code.
(*3) Error refresh with optical pick-up exchange, another not ex-
ecute.
1. OPERATING THE DISPLAYED HISTORYS
1. Press the DIMMER button, DBFB button, and CD 16 button simultaneously and enter the test mode.
2. Press the PROGRAM button, and mechanical error count and
the cout of “NO DISC” that optical system judged are displyed.
3. Under this condition press the buttons in Table 2, and the respective operations are executed as listed below.
Table 2.
Button Function
MD/CD 1 Mechanical error cord from latest one to last ten are dis-
played each time this button is pressed. (*1)
MD/CD 2 The reasons of “NO DISC” from latest one to last ten are
CD 16 Reset the count of mechanical error.
CD 26 Reset the count of “NO DISC”.
(*1) Mechanical error code
(a) The number of Mechanical error.
(b) “FF”: Mechanical error, when mechanical initialize to
(c) “4
(d) “2
(*2) NO DISC error code
displayed each time this button is pressed. (*2)
M0 =
* ******
(a) (b) (c) (d)
Latest one “00” to last ten “09”
(Turn the MULTI JOG dial and change the error No.)
completion.
Others: Mechanical error in the midst of mechanical initialize.
”: Mechanical error in the midst of mechanical initial-
*
ize, when sub tray set into the stocker.
“5
”: Mechanical error in the midst of mechanical initial-
*
ize, when sub tray take out to the stocker.
”: Mechanical error in the midst of elevator moving.
*
Table 1-1.
Display
(error No./code)
0: E00 No error
0: E01 Disc error PTOC does not read
0: E02 Disc error UTOC does not read
0: E03 Loading error
0: E04 Address does not read
0: E05 Out of FOK
0: E06 Focus does not work
0: E07 Retry of record
0: E08 Record retry error
0: E09 Retry of Playback
0: E0A Playback retry error
Contents
D0 =
* ******
(a) (b) (c) (d)
(a) The number of NO DISC error.
Latest one “00” to last ten “09”
(Turn the MULTI JOG dial and change the error No.)
(b) “01”: Focus error
“02”: GFS error
“03”: Set up error
(c) “00”: NO DISC error (Does not chucking retry)
“02”: NO DISC error (Chucking retry to completion)
(d) The status, when judged NO DISC error.
“3
”: Stop
*
“4*”: Set up
“5
”: TOC read
*
“6*”: Access
“7
”: Play
*
“8*”: Pause
“9
”: Manual search (Play)
*
– 3 –
SECTION 1
SERVICING NOTES
TABLE OF CONTENTS
SELF DIAGNOSTICS ...................................................... 2
1. SERVICING NOTES............................................... 4
2. GENERAL ................................................................... 6
3. DISASSEMBLY ......................................................... 8
4. TEST MODE.............................................................. 21
5. ELECTRICAL ADJUSTMENTS
MD Section ..................................................................... 24
CD Section ...................................................................... 29
6. DIAGRAMS
6-1. Printed Wiring Board – BD (CD) Section –.................. 31
6-2. Schematic Diagram – BD (CD) Section –...................... 33
6-3. Printed Wiring Boards – BD (MD) Section – ............... 36
6-4. Schematic Diagram – BD (MD) Section –.................... 39
6-5. Schematic Diagram – SUB Section –............................. 44
6-6. Printed Wiring Board – SUB Section –......................... 49
6-7. Printed Wiring Boards – MAIN Section – .................... 52
6-8. Schematic Diagram – MAIN Section – .......................... 55
6-9. Schematic Diagram –PANEL Section – ......................... 60
6-10. Printed Wiring Boards – PANEL Section – .................. 65
6-11. Printed Wiring Boards
– CD (Motor/ Sensor) Section – .................................... 67
6-12. Schematic Diagram
– CD (Motor/ Sensor) Section – ..................................... 69
6-13. Printed Wiring Boards
– MD (Motor/ Sensor) Section – .................................... 71
6-14. Schematic Diagram
– MD (Motor/ Sensor) Section – .................................... 73
6-15. Printed Wiring Boards
– POWER/AMPLIFIER Section – ................................. 75
6-16. Schematic Diagram
– POWER/AMPLIFIER Section – ................................. 77
6-17. Printed Wiring Boards
– DETACHABLE CONTROLLER Section
(RM-MD515) – .............................................................. 79
6-18. Schematic Diagram
– DETACHABLE CONTROLLER Section
(RM-MD515) – ............................................................... 81
6-19. IC Pin Function Description ........................................... 92
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
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
pick-up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.
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 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
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED
LINE WITH MARK ! ON THE SCHEMATIC DIA GRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.
7. EXPLODED VIEWS...............................................107
8. ELECTRICAL PARTS LIST ..............................117
– 4 –
CAUTION
Use of controls or adjustments or performance of
procedures other than those specified herein may
result in hazardous radiation exposure.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
The following caution label is located inside the unit.
MODEL IDENTIFICATION
– Back Panel –
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT -540A. Follo w the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter . The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate lowvoltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V A C range are suitable. (See Fig. A)
To Exposed Metal
Parts on Set
AC
0.15 µF
1.5 k
Ω
voltmeter
(0.75 V)
PART No.
MODEL PARTS No.
AEP, UK, German and
North European models
4-993-619-1π
Malaysia and Singapore models 4-993-619-2π
Hong Kong model 4-993-619-3π
US model 4-993-619-4π
Tourist model 4-993-619-6π
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
– 5 –
LOCATION OF CONTROLS
– Main Unit (HCD-MD515) –
SECTION 2
GENERAL
1 GROOVE button and indicator
2 Fluorescent indicator tube
3 POWER button
4 Remote sensor (for optional remote controller)
5 MD slots
6 MD 1 to 3 indicator
7 MD 6 button
8 CD 1 to 3 6 (open/close) button and indicator
9 CD disc tray
!º PHONES jack
!¡ DIMMER button
!™ DBFB button and indicator
!£ Remote sensor (for detachable controller)
!¢ Detachable controller terminal
– Detachable Controller (RM-MD515) –
1 EDIT/NO button
2 ENTER/YES button
3 POWER button
4 PRESET EQ button
5 CLOCK/TIMER SET button
CLOCK/TIMER SELECT button
6 TAPE button
MD button
CD button
TUNER (BAND) button
7 MANUAL, CONTINUE button
AUTO, SHUFFLE button
PRESET, PROGRAM button
STEREO/MONO, REPEAT button
8 FUNCTION button
9 DISPLAY button
!º ^ button
!¡ p button
!™ VOLUME dial
!£ DISC SKIP button
!¢ REC/CD-MD SYNC button
!∞ REC IT button
!§ CD LOOP button
!¶ MD/CD 1 to 3 button
!• MULTI JOG dial
!ª 0 N button
) n button
– 6 –
This section is extracted from
instruction manual.
– 7 –
• This set can be disassembled in the order shown below.
DETACHABLE CONTROLLER
(RM-MD515)
(Page 9)
SECTION 3
DISASSEMBLY
CABINET (REAR) ASS’Y
(DETACHABLE CONTROLLER)
(Page 9)
MAIN BOARD, SUB BOARD
(Page 11)
MD MECHANISM DECK SECTION (MDM-C1D)
(Page 11)
HOLDER (FN),
CHASSIS (TOP)
(Page 12)
CHASSIS (ELEVATOR)
(NEW) ASS’Y
(Page 13)
MD BASE UNIT
(MBU-C1)
(Page 14)
BD (MD) BOARD
(Page 14)
CASE
(Page10)
FRONT PANEL SECTION
(Page 10)
MOTOR (HEAD)
ASS’Y (M905)
(Page 13)
AMP BOARD
(Page 16)
CD MECHANISM DECK SECTION (CDM48-5BD29)
(Page 16)
STOCKER ASS’Y
(Page 17)
CD BASE UNIT (BU-5BD29)
(Page 18)
OVER WRITE HEAD (HR901)
(Page 15)
OPTICAL PICK-UP (KMS-260A/J1N) (for MD)
(Page 15)
TRAY (SUB)
ASS’Y
(Page 17)
OPTICAL PICK-UP (KSS-213BA/F-NP) (for CD),
SLED MOTOR (M102)
(Page 19)
BD (CD) BOARD
(Page 19)
SPINDLE MOTOR (M101)
(Page 20)
OPTICAL
PICK-UP CLEANING
(Page 18)
– 8 –
Note: Follow the disassembly procedure in the numerical order given.
DETACHABLE CONTROLLER (RM-MD515)
2
Detachable controller (RM-MD515)
to direction of the arrow.
1
two claws
CABINET (REAR) ASS’Y (DETACHABLE CONTROLLER)
3
Hold the arrow
of cabinet (front) ass’y.
B
B
C
5
connector
(CN2)
two claws
4
Remove eighth claws as
turn the cabinet (rear) ass’y
to direction of the arrow C.
three claws
C
1
Remove the battery
case lid to direction
of the arrow A.
three claws
– 9 –
2
seventh screws
(P2 × 4)
A
CASE
1
four screws
(case 3TP2)
3
Remove the case to
direction of the arrow.
2
screw
(BV3 × 8)
2
two screws
(BV3 × 8)
FRONT PANEL SECTION
1
connector
(CN200)
5
front panel section
4
two claws
1
flat wire (19 core)
(CN400)
2
earth lead
1
four screws
(case 3TP2)
4
claw
3
three screws
(BV3 × 8)
– 10 –
4
two claws
MAIN BOARD, SUB BOARD
1
flat wire (11 core)
(CN101)
1
connector
(CN920)
2
two screws
(BV3 × 8)
5
MAIN board
3
1
connector
(CN112)
connector
(CN300)
1
flat wire (19 core)
(CN401)
1
connector
(CN900)
4
two PC board holders
2
screw (BV3 × 8)
7
screw (BV3 × 8)
6
connector
(CN912)
8
PC board holder
1
6
flat wire (23 core)
(CN500)
7
two screws
(BV3 × 8)
connector
(CN911)
6
flat wire (17 core)
(CNP13)
MD MECHANISM DECK SECTION (MDM-C1D)
3
two screws
(BV3 × 8)
2
1
two screws
(BV3 × 8)
REG 5V, 7V board
5
two screws
(BV3 × 8)
9
SUB board
4
cover (MDM)
6
flat wire (23 core)
(CN600)
3
screw
(BV3 × 8)
3
6
screw
(BV3 × 8)
flat wire (17 core)
(CN601)
5
two screws
(BV3 × 8)
6
MD mechanism deck section
(MDM-C1D)
– 11 –
HOLDER (FN), CHASSIS (TOP)
7
two screws
(BVTT2.6 × 5)
3
flat wire (13 core)
(CNP12)
3
flat wire (7 core)
(CNP15)
5
lever (S) ass’y
4
screw
(BVTT2.6 × 5)
6
bracket (3)
7
two screws
(PTP2 × 5)
8
chassis (TOP)
2
holder (FN)
NOTE FOR INSTALLATION OF BRACKET (3)
1 Lift up the lever (S) ass’y.
2 Hang the lever (S) ass’y for bracket (3).
3 Slide the lever (S) ass’y to direction of the arrow.
lever (s) ass’y
screw (BVTT2.6 × 5)
bracket (3)
1
four screws
(BVTT2.6 × 5)
– 12 –
CHASSIS (ELEVATOR) (NEW) ASS’Y
1
Remove the chassis (elevator) (new)
ass’y to direction of the arrow.
MOTOR (HEAD) ASS’Y (M905)
8
MOTOR RELAY board
3
2
belt A
screw
(BVTT2.6 × 5)
7
Break the soldering of motor.
1
connector (CNP19)
B
6
Remove the motor (head)
ass’y to direction of the arrow B.
4
Remove the chassis (head gear)
ass’y to direction of the arrow A.
A
– 13 –
5
two screws
(P2 × 2)
MD BASE UNIT (MBU-C1)
1
two step screws
3
connector
(CN108)
over write head
1
two step screws
2
MD base unit
(MBU-C1)
chassis (elevator)
BD (MD) BOARD
2
1
two connectors
(CN104, 109)
two precision screws
(P1.7 × 2.5)
T ake care not to catch.
5
OP translation
flexible board
(CN101)
4
BD (MD) board
– 14 –
3
screw
(BTP2 × 6)
OVER WRITE HEAD (HR901)
1
screw
(P1.7
×
2.5)
2
over write head
(HR901)
OPTICAL PICK-UP (KMS-260A/J1N) (for MD)
4
Remove the optical pick-up
(KMS- 260A/J1N) (for MD)
to direction of the arrow.
3
shaft (main)
1
screw
(M1.7 × 1.4)
2
stopper
– 15 –
AMP BOARD
5
two screws
(BV3 × 8)
7
connector
(CN802)
6
chassis
5
two screws
(BV3 × 8)
7
connector
(CN801)
5
two screws (BV3 × 8)
8
AMP board
4
Pull the heat sink.
2
cover (back)
1
three screws
(BV3 × 8)
3
two screws
(BV3 × 8)
CD MECHANISM DECK SECTION (CDM48-5BD29)
2
CD mechanism deck section
(CDM48-5BD29)
3
two screws
(BVTT3 × 8)
1
two screws
(BV3 × 8)
1
two screws
(BV3 × 8)
1
two screws
(BV3 × 8)
– 16 –
STOCKER ASS’Y
1
2
Remove the bracket
(sub chassis) to
direction of the arrow.
two screws
(BVTT3 × 6)
4
three screws
(BVTT3 × 6)
5
1
two screws
(BVTT3 × 6)
stocker ass’y
TRAY (SUB) ASS’Y
3
two levers (stock)
2
tray (sub) ass’y
– 17 –
1
Pull the slider (selection).
CD BASE UNIT (BU-5BD29)
4
four screws
(BV3 × 8)
5
Remove the CD base unit (BU-5BD29)
to direction of the arrow.
1
connector
(CN691)
3
CDM board
2
two screws
(BV3 × 8)
1
three connectors
(CN692, 693, 694)
OPTICAL PICK-UP CLEANING
applicator
optical pick-up
Note 1: In cleaning the lens, do not apply an excessive force.
As the optical pick-up is vulnerable, application of
excessive force could damage the lens holder.
Note 2: In cleaning, do not use a cleaner other than exclusive cleaning
liquid (KK-91 or isopropyl alcohol).
Note 3: Wipe the objective lens spirally from center toward outside.
(See Figure A)
(Figure A)
– 18 –
BD (CD) BOARD
1
two screws
(PTPWH M2.6 × 6)
3
5
screw
(BVTP2.6 × 8)
6
two springs
Remove the
four solders.
1
two screws
(PTPWH M2.6 × 6)
2
optical pick-up section
3
two springs
4
flat wire (16 core)
(CN101)
7
BD (CD) board
limit switch
(S101)
OPTICAL PICK-UP (KSS-213BA/F-NP) (for CD), SLED MOTOR (M102)
3
optical pick-up (KSS-213 BA/F-NP) (for CD)
2
sled shaft
1
claw
5
sled motor
(M102)
4
two screws
(P 2 × 3)
– 19 –
SPINDLE MOTOR (M101)
8
spindle motor
(M101)
6
Turn the lever.
4
5
gear (M)
claw
2
claw
1
two insulators (BU)
7
flatness gear (P)
3
Turn the lever.
1
two insulators (BU)
– 20 –
SECTION 4
TEST MODE
4-1. PRECAUTIONS FOR USE OF TEST MODE
1. The erasing-protection tab is not detected in the test mode.
Therefore, operating in the recording laser emission mode and
pressing the REC/CD-MD SYNC button, the recorded contents will be erased regardless of the position of the tab. When
using a disc that is not to be erased in the test mode, be careful
not to enter the continuous recording mode and traverse adjustment mode.
But “CREC MODE”, “EF MO CHECK” and “EF MO ADJUST” is detect the erasing-protection tab and recording laser
power off.
2. Using MD slot is “DISC 1” only.
4-1-1. Recording Laser Emission Mode and Operating
Button
1. Continuous recording mode (CREC MODE)
2. Traverse adjustment mode (EF MO ADJUST)
3. Laser power adjustment mode (LDPWR ADJUST)
4. Laser power check mode (LDPWR CHECK)
5. When pressing the REC/CD-MD SYNC button.
6. Traverse checking mode (EF MO CHECK)
4-2. SETTING THE TEST MODE
1. Turn on the set, and select the MD function.
2. Place the MD in “NO DISC” status (No disc present in stocker
and inside of set)
3. Press DBFB button, DIMMER button, and MD6 button simultaneously to activate the Test mode.
When the Test mode is activated. “TEMP ADJUST” is displayed on fluorescent indicator tube.
4-3. LO ADING/UNLOADING A DISC IN TEST MODE
1. In the Test mode, use the slot 1 only. (Do not load a disc in
other slots.)
2. When a disc is loaded in slot 1, in several seconds it will be
automatically pulled in.
3. To unload a disc, press MD6 button .
4. To load a disc again, press MD6 button .
5. In the Test mode, MD1, 2, 3 LEDs do not light regardless of
whether a disc is present or not.
4-6. SELECTING THE TEST MODE
T wenty six test modes are selected by turn the MULTI JOG dial.
Table 2.
Display Contents
TEMP CHECK Temperature compensation offset check
LDPWR CHECK Laser power check
EF MO CHECK Traverse (E-F balance) check
EF CD CHECK Travers (Pre mastered disk) check
FBIAS CHECK Focus bias check
CPLAY MODE Continuous playback mode
CREC MODE Continuous recording mode
Scurve CHECK S-curve check (*1)
VERIFY MODE Non-volatile memory check (*1)
DETRK CHECK Detrack check
TEMP ADJUST Temperature compensation offset adjustment
LDPWR ADJUST Laser power adjustment
EF MO ADJUST Traverse (E-F balance) adjustment
EF CD ADJUST Traverse (Pre mastered disk) adjustment
FBIAS ADJUST Focus bias adjustment
EEP MODE Non-volatile memory mode (*1)
MANUAL CMD Manual command transfer mode (*1)
SVDATA READ Data reading out mode (*1)
ERR DP MODE Operation of error histories memory
SLED MOVE Operation of sled motor (*1)
ACCESS MODE Access check (*1)
0920 CHECK Outermost periphery check (*1)
WRITE sure? Non-volatile memory initialize (*1)
HEAD ADJUST HEAD adjustment check (*1)
CPLAY2MODE Continuous playback mode (*1)
CREC2MODE Continuous recording mode (*1)
• For detailed description of each adjustment mode, refer to the “5.
ELECTRICAL ADJUSTMENTS” (page 24).
• If a different adjustment mode has been selected by mistake, press
the EDIT/NO button to exit from it.
4-4. RELEASING THE TEST MODE
Press the REPEAT button, and the set returns to normal mode.
(If REPEAT button is pressed with a disc loaded, the disc is automatically ejected.)
4-5. BASIC OPERATIONS OF THE TEST MODE
All operations are performed using the MULTI JOG dial,
ENTER/YES button, and EDIT/NO button. The functions of
these buttons and dial are as follows.
Tab le 1.
Button & dial Function
MULTI JOG dial Changes parameters and modes.
ENTER/YES button
EDIT/NO button
Proceeds onto the next step.
Finalizes input.
Returns to previous step.
Stops operations.
*1: Scurve CHECK, VERIFY CHECK, EEP MODE, MANUAL
CMD, SVDA TA READ, SLED MOVE, A CCESS MODE, 0920
CHECK, Write sure?, HEAD ADJUST, CPLAY2MODE, and
CREC2MODE are not used in servicing. If set accidentally,
press the POWER button immediately to exit it.
– 21 –
4-7. OPERATING THE CONTINUOUS PLAYBACK
MODE
4-8. OPERA TING THE CONTINUOUS RECORDING
MODE
4-7-1. Entering the Continuous Playback Mode
1. Set the disc in the slot 1 of unit. (In several seconds it will be
automatically pulled in.) (Whichever recordable discs or discs
for playback only are available.)
2. Turn the MULTI JOG dial and display “CPLAY MODE”.
3. Press the ENTER/YES button to change the display to “CPLAY
MID”.
4. When access completes, the display changes to
“C = AD= )”.
Note: The numbers “ ” displayed show you error rates and ADER.
4-7-2. Changing the Parts to be Played-back
1. Press the ENTER/YES button during continuous playback to
change the display as below.
CPLAY MID
CPLAY OUT CPLAY IN
2. When access completes, the display changes to
“C1=
Note: The numbers “ ” displayed show you error rates and ADER.
AD= ”.
4-7-3. Ending the Continuous Playback Mode
1. Press the EDIT/NO button. The display will change to
“CPLA Y MODE”.
2. Press the MD6 button and remove the disc.
Notes:
1. The playback start address for IN, MID, and OUT are as follows.
IN : 40h cluster
MID : 300h cluster
OUT : 700h cluster
In case you want to display the address of the playback position on the
display, press the DISPLA Y button and display “CPLAY (
2. The EDIT/NO button can be used to stop playing anytime.
)”.
4-8-1. Entering the Continuous Recording Mode
1. Set the MO disc in the slot 1 of unit. (Refer to note 3.)
2. Turn the MULTI JOG dial and display “CREC MODE”.
3. Press the ENTER/YES button to change the display to “CREC
MID”.
4. When access completes, the display changes to “CREC
( )” and REC lights up.
Note: The numbers “ ” displayed shows you the recording position ad-
dress.
4-8-2. Changing the Parts to be Recorded
1. When the ENTER/YES button is pressed during continuous
recording, the display changes as below. (“PROGRAM”
indication turns off during change-over of display.)
CREC MID
CREC OUT CREC IN
2. When access completes, the display changes to “CREC
( )” and REC lights up.
Note: The numbers “ ” displayed shows you the recording position ad-
dress.
4-8-3. Ending the Continuous Recording Mode
1. Press the EDIT/NO button. The display will change to “CREC
MODE” and REC goes off.
2. Press the MD 6 button and remove the disc.
Notes:
1. The recording start address for IN, MID, and OUT are as follows.
IN : 40h cluster
MID : 300h cluster
OUT : 700h cluster
2. The EDIT/NO button can be used to stop recording anytime.
3. During the test mode, the erasing-protection tab will not be detected.
Therefore be careful not to set the continuous recording mode when a
disc not to be erased is set in the unit.
4. Do not perform continuous recording for long periods of time a bove 5
minutes.
5. During continuous recording, be careful not to apply vibration.
4-9. EEP MODE
This mode reads and writes the contents of the non-volatile
memory.
It is not used in servicing. If set accidentally, press the
EDIT/NO button immediately to exit it.
– 22 –
4-10. FUNCTIONS OF OTHER BUTTONS
Tab le 3.
Button Contents
Sets continuous playback when pressed in the STOP
fl
p
)
0
REC/CD-MD
SYNC
SHUFFLE
CONTINUE
DISPLAY
REPEAT
6
state. (servo all on)
When pressed during continuous playback, the tracking
and sled servo turns on/off.
Stop continuous playback and continuous recording.
(servo all off)
The sled moves to the outer circumference only when
this is pressed.
The sled moves to the inner circumference only when
this is pressed.
Turns recording on/off when pressed during continuous
playback.
Switches between the pit and groove modes when
pressed.
Switches between the CLV-S (pull-in mode) and CLVA (playing servo) modes when pressed. (Switches the
spindle servo mode.)
Switches the display when pressed.
Returns to previous step. Stop operations.
Releasing the test mode
Disc eject
1. MODE display
Displays “TEMP ADJUST”, “CPLAY MODE”, etc..
2. Error rate display
Error rates are displayed as follows.
C1= AD=
C1= : Indicates C1 error
AD= : Indicates ADER
3. Address display
Address are displayed as follows.
h= a= (MO groove)
With this display, if SHUFFLE button is pressed, the following will be displayed.
h= s= (MO pit and CD)
h=: Header address
a=: ADIP address
s=: SUB Q address
Note: “—” is displayed when the address cannot be read.
4. Auto gain display
Auto gain are displayed as follows.
AG = / [ ]
A B C
A= Focus servo gain coefficient
B= Tracking servo gain coefficient
C= [OK] or [NG] or [ - -] (not converged)
4-12. MEANINGS OF OTHER DISPLAYS
Table 4.
Note: The erasing-protection tab in not detected during the test mode.
Recording will start regardless of the position of the erasing-protection tab when the REC/CD-MD SYNC button is pressed.
4-11. TEST MODE DISPLAYS
Each time the DISPLAY button pressed, the display changes in
the following order.
Mode
display
Address display
ADIP address
display
Change over the display with the
SHUFFLE button.
Auto gain
display
Error rate
display
SUB Q address
display
IVR
display
Display
(
REC
ALL DISCS
TRACK
DISC
REPEAT
LEVEL-
SYNC
SHUFFLE
PROGRAM
Contents
Light Off
During continuous
playback (servo all on)
Recording mode on
CLV lock state CLV unlock state
Pit mode Groove mode
High reflection rate
disc
Spindle servo
CLV-S
(pull-in mode)
ABCD adjustment
completed
Focus auto gain
successful
Tracking auto gain
successful
Stop state
(servo all off)
Recording
mode off
Low reflection rate
disc
Spindle servo
CLV-A
(playing mode)
Not adjustment
—
—
Blinking
—
—
—
—
—
—
—
Focus
auto gain
successful.
Tracking
auto gain
failed.
Note: Auto gain display and IVR display are not used in servicing.
– 23 –
SECTION 5
d
ELECTRICAL ADJUSTMENTS
MD SECTION
1. PRECAUTIONS FOR CHECKING LASER DIODE EMISSION
T o check the emission of the laser diode during adjustments, nev er
view directly from the top as this may lose your eyesight.
2. PRECAUTIONS FOR USE OF OPTICAL
PICK-UP (KMS-260A)
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
tale adequate measures to prevent damage by static electricity.
Handle the flexible board with care as it breaks easily.
Pick-up
Flexible boar
Laser tap
Optical pick-up flexible board
3. PRECAUTIONS FOR ADJUSTMENTS
1) When replacing the following parts, perform the adjustments
and checks with ® in the order shown in the following table.
Table 1.
Optical
Pick-up
1. Temperature
compensation × ®® ®
offset adjustment
2. Laser power
adjustment
3. Traverse
adjustment
4. Focus bias
adjustment
5. Error rate check ®®× ®
2) Set the test mode when performing adjustments.
After completing the adjustments, exit the test mode.
3) Perform the adjustments in the order shown.
4) Use the following tools and measuring devices.
• Test disc (CD for playback only) TDYS-1
(Parts No. 4-963-646-01)
• Laser power meter LPM-8001
(Parts No. J-2501-046-A)
• Oscilloscope (Measure after preforming CAL of prove.)
• Digital voltmeter
• Thermometer
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)
IC171 D101 IC101, IC121, IC192
®®× ®
®®× ®
®®× ®
BD (MD) board
4. CREATING MO CONTINUOUSLY RECORDED
DISC
* This disc is used in focus bias adjustment and error rate check.
The following describes how to create a MO continuous recording disc.
1. Insert a MO disc (blank disc) commercially available to MD
slot 1.
2. Turn the MULTI JOG dial and display “CREC MODE”.
3. Press the ENTER/YES button and display “CREC MID”.
“CREC (0300)” is displayed for a moment and recording starts.
4. Complete recording within 5 minutes.
5. Press the EDIT/NO button and stop recording.
6. Press the MD6 button and remove the MO disc.
The above has been how to create a continuous recording data for
the focus bias adjustment and error rate check.
Note: Be careful not to apply vibration during continuous recording.
– 24 –
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