Sony sony hcd-sd1 User manual

Sony
Brand
Sony
Model
sony hcd-sd1
Category
Minidisc players
Type
User manual

This manual is also suitable for

– 1 –
MICROFILM
HCD-SD1
SPECIFICATIONS
SERVICE MANUAL
COMPACT DISC RECEIVER
— Continued on next page —
AEP Model
UK Model
E Model
HCD-SD1 is the amplifier, CD and
tuner section in CMT-SD1.
Model Name Using Similar Mechanism HCD-MD313
Mechanism Type CDM13B-5BD19
Base Unit Type BU-5BD19
Optical Pick-up Type KSS-213B/K-N
CD
SECTION
– 2 –
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation 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.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER PROD-
UCT MARKING is located on
the rear exterior.
This caution
label is located
inside the unit.
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE
WITH MARK ! 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.
PARTS No.
4-212-711-0π
4-212-712-0π
MODEL
AEP, UK model
SP, HK model
• Abbreviation
HK : Hong Kong model
SP : Singapore model
Parts No.
MODEL NO. HCD-SD1
MODEL IDENTIFICATION
– Specification Label –
– 3 –
TABLE OF CONTENTS
1. SERVICING NOTE .......................................................... 4
2. GENERAL .......................................................................... 7
3. DISASSEMBLY
3-1. Loading Panel ....................................................................... 8
3-2. Glass ASSY........................................................................... 8
3-3. Front Panel ........................................................................... 9
3-4. Main Board and Tuner Unit .................................................. 9
3-5. CD Mechanism Deck .......................................................... 10
3-6. Back Panel ......................................................................... 10
3-7. Disc Table .......................................................................... 11
3-8. Optical Pick-up ................................................................... 11
4. SERVICE MODE ............................................................. 12
5. TEST MODE ..................................................................... 13
6. ELECTRICAL ADJUSTMENTS ............................... 14
7. DIAGRAMS
7-1. Circuit Boards Location ...................................................... 16
7-2. Block Diagrams
• BD Section .......................................................................17
• Main Section .................................................................... 19
7-3. Schematic Diagram – BD Section – ................................... 23
7-4. Printed Wiring Board – BD Section –................................. 25
7-5. Schematic Diagram – Main (1/2) Section –........................ 27
7-6. Schematic Diagram – Main (2/2) Section – ........................ 29
7-7. Printed Wiring Board – Main Section – .............................. 31
7-8. Schematic Diagram – Sub Trans Section – ......................... 33
7-9. Printed Wiring Board – Sub Trans Section – ...................... 34
7-10. Schematic Diagram – Panel Section – ............................. 35
7-11. Printed Wiring Board – Panel Section –........................... 37
7-12. Schematic Diagram – AMP Section – .............................. 39
7-13. Printed Wiring Board – AMP Section – ........................... 41
7-14. Schematic Diagram – Connector Section –...................... 43
7-15. Printed Wiring Board – Connector Section – ...................45
7-16. Schematic Diagram – REG Section – .............................. 47
7-17. Printed Wiring Board – REG Section –............................ 49
7-18. IC Block Diagrams ........................................................... 51
7-19. IC Pin Functions ............................................................... 54
8. EXPLODED VIEWS
8-1. Front Panel Section ............................................................. 56
8-2. Chassis Section ................................................................... 57
8-3. Mechanism Deck Section (CDM13B-5BD19) ................... 58
8-4. Base Unit Section (BU-5BD19).......................................... 59
9. ELECTRICAL PARTS LIST ........................................ 60
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, ob-
serve from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output two times.
– 4 –
SECTION 1
SERVICING NOTE
OPENING THE DISC TRAY WHEN POWER IS OFF
1
Using a thin screwdriver, rotate the internal cam
in the arrow direction completely.
2
Open the glass door, and pull out the loading panel.
1
2
Pull up the glass door,
in the arrow direction.
4
Screw (PTP 2.6x6)
3
Bracket (shaft)
(Bottom side)
1
When securing this part, position at the
center to allow some play. Open and close
the glass window several times, and check
that the parts do not touch each other.
ATTACHING THE GLASS ASSEMBLY
• Attach according to steps 1 to 4.
– 5 –
POSITIONS FOR SERVICING THE CONNECTOR
BOARD, SUB-TRANS BOARD, CHEMI-CON BOARD,
AND AMP BOARD
1 Remove the four screws securing the upper cover, and remove
the upper cover.
2 Remove the loading panel. (Refer to SECTION 3 DISASSEM-
BLY.)
3 Remove the four screws A securing the MAIN board, five screws
B securing the rear panel, two flat cables (CN701, CN702),
and open the MAIN board as shown in the figure.
4 Remove the two screws C securing the heat sink, and remove
the AMP board and CHEMI-CON board.
5 Remove the two screws D securing the SUB-TRANS board
and four screws E securing the CONNECTOR board, and re-
move the SUB-TRANS board and CONNECTOR board.
6 Return the MAIN board to its original position.
7 Insulate these boards and the MAIN board with paper, etc., and
assemble the CONNECTOR board, SUB-TRANS board,
CHEMI-CON board, and AMP board on these boards.
Should be insulatable
with paper, etc.
A
A
C
D
B
B
E
Heat sink
SUB-TRANS board
AMP board
CHEMI-CON board
CONNECTOR board
MAIN boar
d
Flat type wire (CN701)
Flat type wire (CN702)
– 6 –
POSITION FOR SERVICING THE CD MECHANISM
DECK
1 Remove the four screws securing the upper cover, and remove
the upper cover.
2 Remove the loading panel. (Refer to SECTION 3 DISASSEM-
BLY.)
3 Remove the four screws A securing the MAIN board, five screws
B of the rear panel, and flat cables (CN701, CN702), and re-
move the MAIN board.
4 Remove the two screws D securing the SUB-TRANS board,
and remove the SUB-TRANS board.
5 Remove the two screws F securing the REG board.
6 Remove the three screws G securing the CDM cover, and re-
move the CDM cover.
7 Remove the two screws H securing the CDM, move the CDM
backwards by about 5 mm horizontally, and then lift upwards.
8 Rotate the CDM in the counterclockwise direction by about 30˚
to remove.
9 Return the MAIN and SUB-TRANS boards to their original
positions.
G
H
CDM cove
r
A
A
B
B
D
F
SUB-TRANS board
MAIN board
Flat type wire (CN702)
Flat type wire (CN701)
– 7 –
Location of Parts and Controls
1 1/u (Power) button
2 CD disc tray
3 § button
4 VOLUME dial
5 ±/)/TUNING + button
SECTION 2
GENERAL
Front Panel
15
12
13
11
14
78910
2
3
5
6
1
4
6 ≠/0/TUNING – button
7 π button
8 fl button
9 TUNER/BAND button
10 FUNCTION button
11 DISPLAY button
12 PHONES jack
13 t indicator
14 u indicator
15 Display window
This section is extracted from
instruction manual.
– 8 –
SECTION 3
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
3-1. LOADING PANEL
3-2. GLASS ASSY
1 Turn ON the power, and press the EJECT button to open the
tray.
2 Remove the loading panel in the arrow direction.
3 Press the EJECT button to close the tray.
• If the power cannot be turned ON, refer to “Opening the Disc
Tray When the Power is OFF” of “Service Note”, and open the
tray.
Power button
Loading panel
Eject butto
n
1
Screw (PTP2.6x6)
2
Bracket (shaft)
3
4
4
(Bottom side)
– 9 –
3-3. FRONT PANEL
3-4. MAIN BOARD AND TUNER UNIT
1
Three screws
(BVTP3x8)
2
Three claws
4
Flat type wire (11core)
(CN702)
5
Flat type wire (13core)
(CN701)
6
Front panel
3
1
Four screws
(BVTP3x8)
2
Six screws
(BVTP3x8)
4
Flat type wire (19core)
(CN301)
6
Flat type wire
(19core) (CN705)
5
Connector (CN351)
8
Connector (CN706)
7
MAIN board and Tuner unit
3
– 10 –
3-6. BACK PANEL
3-5. CD MECHANISM DECK
1
Two screws
(BVTP3x8)
8
Two screws
(BVTP3x8)
5
REG board
2
Connector
(CN945)
4
Connector
(CN994)
3
Connector
(CN942)
9
CD mechanism deck
6
Three screws
(BVTP3x8)
7
Dust cove
r
1
Six screws
(BVTP3X8)
2
Four screws
(BVTT3X8)
3
Connector
(CN992)
5
Connector
(CN901)
7
Back panel
6
Connector
(CN551)
8
PC board block
4
Connector
(CN991)
– 11 –
3-7. DISC TABLE
3-8. OPTICAL PICK-UP
1
Screw (BV3x8)
2
Screw (BV3x8
)
3
Holder (MG) assembly
4
Pull out the disc table.
C
B
A
3
Flat type wire (16 core)
(CNU101)
1
Move the claw
in the arrow
A
direction.
2
Remove the sled shaft in the
arrow direction
B
.
4
Remove the optical pickup in the arrow direction
C
.
BD board
– 12 –
SECTION 4
SERVICE MODE
Key Check Mode for Complete Lighting of LED/Fluorescent Display Tube
• Perform this mode to analyze and check malfunctions such as display defects and when buttons do not work.
Procedure:
1. Press the 1/u button to turn on the power.
2. Press the DISPLAY button and ^ button together.
3. All LEDs and the fluorescent display tube will light up completely.
4. Pressing the FUNCTION button here will light the fluorescent display tube in the following order; Partial lighting 1 n Partial lighting
2 n Complete lighting n Partial lighting 1······
Turning the VOLUME dial will switch the lighting order of the LED.
To end without shifting to the key check mode, press the 1/u button to end.
5. Pressing the p button sets the key check mode.
6. During the key check mode, “KEY=0 JOG=0” will be displayed on the fluorescent display tube.
Pressing a button will increase the value of “KEY=”. However the value will not increase for buttons which have already been pressed
once.
Rotating the VOLUME knob in the clockwise direction increases the value of “JOG=” in the order of 1, 2, 3.... and rotating in the
counterclockwise direction decreases in order of 10, 9, and 8.
7. To end the check mode, press all buttons (8 buttons). “KEY-OK” will be displayed.
Then press any button, and disconnect the power cord from the outlet.
Checking the Sub-Clock
• Perform this mode to check clock operations.
Procedure:
1. Connect an oscilloscope and frequency counter between the pin (TP791) and ground of IC701 of the MAIN board.
2. Press the § and 1/u buttons together to display “91P = 32.768k” on the fluorescent display tube.
3. Check that the signal on the oscilloscope becomes a 32 kHz rectangular waveform and the reading of the frequency counter becomes
32.768 kHz.
4. Press the 1/u button to end.
Sled Servo Mode
• In this mode, the CD sled motor can be operated freely.
Execute it when cleaning the pick-up.
Round holes can be seen on the topmost board when the case is opened. Move the pick-up and clean off the dirt in these round holes using
a cotton swab.
Procedure:
1. Press the DISPLAY and § buttons with the power of the unit OFF.
2. When the sled servo is set, “MANUAL” is displayed on the fluorescent display tube.
3. Pressing the +/TUNING/) button when the CD is in the stop state moves the pick-up to the outer track. Pressing the =/
TUNING/0 button moves it to the inner track.
4. To end this mode, perform the following steps.
1) Move the If not, the disc cannot be removed.
2) Press the DISPLAY and § buttons together.
Note:
• When ending this mode, be sure to move the pick-up to the innermost circumference. If not, the disc cannot be removed.
• Do not move the sled motor more than required as this will damage the gears.
Round holes for cleaning
Initializing (Forced Reset)
• Perform this mode when resetting the unit or when returning the unit to the customer.
• The preset frequency of the tuner, etc. will be the settings at shipment.
Procedure:
While pressing the 1/u button, insert the power cord into the outlet.
– 13 –
SECTION 5
TEST MODE
AGING MODE
This unit is equipped with an aging mode.
Use this mode for analyzing defects and for checks after completing repairs.
After repairs, perform aging 100 times and check that the unit is normal.
The aging mode is executed in the following sequence.
The aging mode will continue as long as the unit is normal.
If the unit becomes abnormal, it will display the state and number of cycles, and operations will stop. (Refer to Table 1.)
Sequence of Aging Mode:
CD TOC OK?
NO
YES
OK?
NO
OK?
NO
NO
YES
OK?
OK?
NO
OK?
NO
YES
NO
YES
YES
YES
OK
YES
NG
Start
Sets the CD function and reads the CD TOC.
Message 1
Message 2
Message 3
Message 4
Message 5
Message 6
Message 4
Pauses first song.
Last song search paused state
Starts last song playback
Is CD playing?
End playback?
Opens the CD tray
Closes the CD tray
Power OFF
Display of number of aging cycles
Power ON
Optical defect, spindle defect (including motor), cannot read
Q data, disc defect (scratches, etc.), bad focus, bad GFS, etc.
Disc defect (scratches, etc.), cannot read Q data, etc.
Optical defect, sled, tracking defect (including motor), cannot
read Q data, disc defect (scratches, etc.).
Optical defect, cannot read Q data, disc defect (scratches, etc.),
etc.
LOAD OUT SW defect
LOAD IN SW defect
No
Error Messages
Details of Error
1
2
3
4
5
6
CD No Disc NG
CD Pause NG
CD Search NG
CD Play NG
CD Open NG
CD Close NG
Cannot read CD TOC.
Cannot set CD pause in
CD synchro mode.
Cannot search last track on CD.
Cannot play last track on CD.
Cannot open CD tray.
Cannot close CD tray.
Main Causes
Procedure:
1. Press the DISPLAY button and =/TUNING/0 button together.
2. To end aging, press the u button and end.
Table-1 Messages and Main Reasons for Stop of Aging
– 14 –
Procedure:
1. Connect oscilloscope to test point TP (RF).
2. Turned Power switch on.
3. Put disc (YEDS-18) in and playback.
4. Adjust RV101 so that the waveform is clear.
(Clear RF signal waveform means that the shape “◊” can be
clearly distinguished at the center of the waveform.)
5. After adjustment, check the RF signal level.
• RF signal
VOLT/DIV: 200 mV
TIME/DIV: 500 nS
S Curve Check
Procedure :
1. Connect oscilloscope to test point TP (FEO).
2. Connect between test point TP (FOK) and Ground by lead wire.
3. Turn Power switch on.
4. Put disc (YEDS-18) in and turned Power switch on again and
actuate the focus search. (actuate the focus search when disc
table is moving in and out.)
5. Check the oscilloscope waveform (S-curve) is symmetrical be-
tween A and B. And confirm peak to peak level within 2.4 ± 0.7
Vp-p.
S-curve waveform
6. 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 bright-
ness to obtain best waveform.
RF Level Check
Procedure :
1. Connect oscilloscope to test point TP (RF) on BD board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in and playback.
4. Confirm that oscilloscope waveform is clear and check RF sig-
nal level is correct or not.
Note: Clear RF signal waveform means that the shape “◊” can be
clearly distinguished at the center of the waveform.
• RF signal
VOLT/DIV: 200 mV
TIME/DIV: 500 nS
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 10MΩ impedance.
4. Clean the object lens by an applicator with lens cleaning liquid
when the signal level is low than specified value with the fol-
lowing checks.
5. Adjust the focus bias adjustment when optical block is replaced.
Focus Bias Adjustment
Perform this adjustment when the optical pick-up has been replaced
or repaired.
–
+
oscilloscope
BD (CD) board
TP (RF)
TP (VC)
level : 1.3
±
0.3 Vp-p
–
+
oscilloscope
BD (CD) board
TP (FEO)
TP (VC)
symmetry
A
B
within 2.4
±
0.7 Vp-p
–
+
oscilloscope
BD (CD) board
TP (RF)
TP (VC)
SECTION 6
ELECTRICAL ADJUSTMENTS
level : 1.3
±
0.3 Vp-p
– 15 –
Procedure :
1. Connect oscilloscpe to test point TP (TEO) on BD board.
2. Turn Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
4. Press the “P (Pause)” button. (Becomes the 1 track jump mode)
5. Confirm that the oscilloscope waveform is symmetrical on the
top and bottom in relation to 0Vdc, and check this level.
1 track jump waveform
E-F Balance (1 Track Jump) Check
(Without remote commander)
Specified level: • x 100 = less than ± 7%
• A + B = 300 ± 100 mVp-p
Focus/Tracking Gain Adjustment (RV102, RV103)
This gain has a margin, so even if it is slightly off.
There is no problem.
Therfore, do not perform this adjustment.
Please note that it should be fixed to mechanical center position
when you moved and do not know original position.
A – B
2 (A + B)
Adjustment Location:
[BD (CD) BOARD] — Component Side —
–
+
oscilloscope
BD (CD) board
TP (TEO)
TP (VC)
A
B
0
V
LEVEL : 300
±
100 mVp-p
RF
RV101
(Focus Bias Adjust)
RV103
TEO
VC
FEO
RV102
TEI
FEI
FOK
IC101
IC104
GND
PCK
IC102
– 16 –
SECTION 7
DIAGRAMS
7-1. CIRCUIT BOARDS LOCATION
PANEL-SW board
MAIN board
TRANS board
SUB-TRANS board
BD board
LOADING board
PANEL board
REG board
AMP board
CHEMI-CON boar
d
CONNECTOR board
VOLUME board
HP board
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Sony sony hcd-sd1 User manual

Sony
Brand
Sony
Model
sony hcd-sd1
Category
Minidisc players
Type
User manual
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