Sony HCD-VX33 Manuale utente
HCD-VX33
E Model
Tourist Model
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
— Continued on next page —
SPECIFICATIONS
• HCD-VX33 is the tuner, deck, CD
and amplifier section in MHC-
VX33.
Model Name Using Similar Mechanism NEW
CD CD Mechanism Type CDM58-K2BD37A
Section Base Unit Name BU-K2BD37A
Optical Pick-up Name KSM-213DAP
Tape deck Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type TCM-230AWR11
Amplifier section
MHC-VX33:
The following measured at AC 120, 220, 240 V
50/60 Hz
DIN power output (rated) 75 + 75 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
100 + 100 watts
(6 ohms at 1 kHz,
10% THD)
Inputs
MD/VIDEO IN: voltage 450/250 mV,
(phono jacks) impedance 47 kilohms
MIC: sensitivity 1 mV,
(mini jack) impedance 10 kilohms
Outputs
VIDEO OUT: max. output level
(phono jack) 1Vp-p, unbalanced,Sync
negative, load impedance
75 ohms
S-VIDEO OUT: Y: 1Vp-p, unbalanced,
(4-pin/mini-DIN jack) Sync negative,
C: 0.286Vp-p,
load impedance 75 ohms
PHONES: accepts headphones of
(stereo mini jack) 8 ohms or more
SPEAKER:
MHC-VX33: accepts impedance of 6 to
16 ohms
VIDEO CD/CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ=780 nm)
Emission duration:
continuous
Laser output Max. 44.6
µ
W*
*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.
Wavelength 780 — 790 nm
Frequency response 2 Hz — 20 kHz (±0.5 dB)
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
Video color system formatNTSC, PAL
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
Wavelength 660 nm
Output Level —18 dBm
2
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINEWITH
MARK 0ON 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.
1. Check thearea ofyourrepair forunsoldered or poorly-soldered
connections. Checkthe entire boardsurface forsolder splashes
and bridges.
2. Check the interboard wiring to ensure that no wires are
"pinched" or contact high-wattage resistors.
3. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
4. Look for parts which, through functioning,showobvious signs
of deterioration. Point them out to the customer and
recommend their replacement.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety
checks before releasing the set to the customer.
5. Check the B+ voltage to see it is at the values specified.
6. 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.
General
Power requirements
Thai model: 220 V AC, 50/60 Hz
Other models: 120 V, 220 V or
230 —240 V AC, 50/60 H
z
Adjustable with voltage
selector
Power consumption 190 watts
Dimensions (w/h/d)
Approx. 280 x 325 x 403 mm
Mass Approx. 8.9 kg
Supplied accessories: AM loop antenna (1)
FM lead antenna (1)
Remote Commander (1)
Batteries (2)
Video cable (1)
Front speaker pads (8)
Design and specifications are subject to change
without notice.
Tape player section
Recording system 4-track 2-channel stereo
Frequency response 40 —13,000 Hz (±3 dB),
using Sony TYPE I
cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
Tourist model: 76.0 —108.0 MHz
Other models: 87.5 —108.0 MHz
Antenna FM lead antenna
Antenna terminals 75 ohm unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Middle Eastern 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)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
3
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.
CAUTION
Use of controls or adjustments or performance of procedures
otherthan thosespecified hereinmay resultin 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.
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.
TABLE OF CONTENTS
1. SERVICE NOTE ······························································· 4
2. GENERAL ·········································································· 5
3. DISASSEMBY ·································································· 7
4. TEST MODE···································································· 12
5. MECHANICAL ADJUSTMENTS ····························· 16
6. ELECTRICAL ADJUSTMENTS ······························· 16
7. DIAGRAMS
7-1. Circuit Board Location ················································· 23
7-2. Block Diagrams ···························································· 25
7-3. Printed Wiring Board BD Section ····························· 28
7-4. Schematic Diagram BD Section ································ 29
7-5. Printed Wiring Board Main Section ·························· 30
7-6. Schematic Diagram Main Section (1/3) ···················· 31
7-7. Schematic Diagram Main Section (2/3) ···················· 32
7-8. Schematic Diagram Main Section (3/3) ···················· 33
7-9. Printed Wiring Board PowerAMP Section ··············· 34
7-10. Schematic Diagram Power AMP Section ················ 35
7-11. Printed Wiring Board Panel Section ························ 36
7-12. Schematic Diagram Panel Section ··························· 37
7-13. Printed Wiring Board Leaf SW Section ··················· 38
7-14. Schematic Diagram Leaf SW Section ····················· 39
7-15. Printed Wiring Board Driver Section ······················· 40
7-16. Schematic Diagram Driver Section ························· 41
7-17. Printed Wiring Board Video CD Section ················· 42
7-18. Schematic Diagram Video CD Section (1/2) ··········· 43
7-19. Schematic Diagram Video CD Section (2/2) ··········· 44
7-20. Printed Wiring Board Power Section ······················· 45
7-21. Schematic Diagram Power Section·························· 45
7-22. IC Pin Function Description ······································· 46
7-23. IC Block Diagrams ····················································· 50
8. EXPLODED VIEWS
8-1. Main Section································································· 54
8-2. Panel Section ································································ 55
8-3. Main Board Section ······················································ 56
8-4. Tape Mechanism Section (TCM-230PWR11) (1/2) ····· 57
8-5. Tape Mechanism Section (TCM-230PWR11) (2/2) ····· 58
8-6. CD Mechanism Section (CDM58-K2BD37) ··············· 59
9. ELECTRICAL PARTS LIST ······································· 60
4
SECTION 1
SERVICE NOTE
MODEL IDENTIFICATION
—BACK PANEL —
MODEL
E, EA, HK, MY, SP, TW, JE models
TH model
IA model
PARTS No.
4-224-547-3s
4-224-547-5s
4-226-245-4s
PARTS No.
•Abbreviation
EA :Saudi Arabia model
MY :Malaysia model
SP :Singapore model
TH :Thai model
TW :Taiwan model
IA :Indonesia model
HK :Hong Kong model
JE :Tourist model
Screw hole
Attach the panel board with
fourteen screws (
+BVTP 2.6
×
8
)
after the board is removed once.
Do not tighten the screws excessively.
1
Cut the fourteen melted-connection points with a cutting plier.
Note for installing the panel board
2
Panel board
Hot melt
5
SECTION 2
GENERAL
123 45
6
7
8
9
q;
qa
qsqdqfqgqh
qj
ql
qk
w;
wa
ws
wd
wf
wk
wl
e;
ea
es
ed
efeg
eh
ej
wg
wh
wj
1–.button
2xbutton
3gG/SELECT button
4Sbutton
5>+ button
6PLAY MODE button
7REPEAT button
8EDIT button
9VOLUME knob
q; PHONE jack
qa OPEN/CLOSE button
qs DISC 3 button
qd DISC 2 button
qf DISC 1 button
qg DISC SKIP EX-CHANGE button
qh CURSOL button
qj MIC jack
qk ECHO LEVEL knob
ql MIC LEVEL knob
w; SPECTRUM button
wa DISPLAY button
ws @/1button
wd MD/VIDEO button and indicator
wf TAPE A/B button and indicator
wg RETURN button
wh PREV button
wj NEXT button
wk CD button and indicator
wl TUNER/BAND button and indicator
e; GROOVE button and indicator
ea CINEMA SPACE button and indicator
es CD SYNC HI-DUB button
ed REC PAUSE/START button and indicator
ef KARAOKE PON/MPX button
eg ENTER button
eh EQ EDIT button
ej PICTURE EFFECT button
6
This section is extracted from
instruction manual.
8
1Press CLOCK/TIMER SET.
The hour indication flashes.
2Press .or >repeatedly to set
the hour.
3Press ENTER.
The minute indication flashes.
4Press .or >repeatedly to set
the minute.
5Press ENTER.
The clock starts working.
Tip
If you make a mistake, start over from step 1.
To change the time
The previous explanation shows how to set
the time while the power is off. To change the
time while the power is on, do the following:
1Press CLOCK/TIMER SET.
2Press .or >repeatedly to select SET
CLOCK.
3Press ENTER.
4Perform steps 2 through 5 above.
Note
The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.
NX x
xMm>.
nN
O
v
V
bB
X
Step2: Setting the
time
You must set the time before using the timer
functions.
1
3,5
2,4
7
SECTION 3
DISASSEMBY
Note : Follow the disassembly procedure in the numerical order given.
3-1. UPPER CASE (TOP)
3-2. LOADING PANEL ASSY
Case (R)
4
q;
8
Upper case (Top)
Case (L)
5
Two screws (Case)
7
Two screws
(+BVTP 3
×
10)
3
Two screw
s
1
Two screws (Case)
9
Four screws (+BVTP 3
×
10)
6
Screw (Case)
2
Screw (Case)
2
Pull-out the disc tray.
1
Turn the pulley to the direction of arrow.
pulley
Loading panel assy
Front panel side
CD mechanism deck (CDM58)
3
8
3-3. FRONT PANEL SECTION
3-4. TAPE MECHANISM DECK
qa
CD mechanism deck (CDM58)
9
Flat type wire
(CN501)
8
Flat type wire
(CN502)
qd
Video Board
q; Two
screws
(+BVTP 3
×
10)
qs Two
screws
(+BVTP 2.6
×
8)
7
Front panel section
2
Connector (CN1)
3
Connector (CN2)
1
Flat type wire(CN304)
6
Three screws (+BVTT 3
×
6)
5
Screw(+BVTP 3
×
10)
4
Screw (+BVTP 3
×
10)
6
Tape mechanism deck
5
Five screws (+BVTP 2.6
×
8)
1
Screw (+BVTP 2.6
×
8)
2
Bracket (Heart cam R)
4
Bracket (Heart cam L)
3
Screw (+BVTP 2.6
×
8)
9
3-5. PANEL BOARD
3-6. SUB-TRANS BOARD ANDTRANS BOARD
7
Cut the fourteen melted-connection points with a cutting plier.
Note: When attching the panel board,
refer to "Service Note" on page 4.
9
Panel board
1
Knob (Volume)
2
Hexagon nut
3
Bracket (Volume)
6
4
Ring (Vol)
8
Six claws
5
Spring (Jog)
3
Two screws
(+BVTT 4
×
6)
8
Five screws
(+BVTP 3
×
10
)
7
Two screws
(+BVTP 3
×
10)
q;
Two screws
(+BVTP 3
×
10)
qs
Screw (+BVTP 2.6
×
8)
9
Back panel
4
Two screws
(+BVTT 4
×
6)
6
Trans board
qd
Sensor board
qa
Cover (Duct)
5
Trans
1
Connector (CN971)
2
Connector (CN972)
10
6
Screw (+PS 2.6
×
5)
4
Screw (+PS 2.6
×
5)
2Leaf
SW board
1
Five claws
5
Head (A) board
7
Head (B) board
3
Remove the four solderings.
3-7. MAIN BOARD AND AMP BOARD
3-8. LEAF SW BOARD, HEAD (A) BOARD AND HEAD (B) BOARD
4
Three screws (+BVTP 3
×
8)
6
Two screws (+BVTP 3
×
8)
7
Heat sink
3
Two screws (+BVTP 3
×
16)
1
Two screws (+BVTP 3
×
8
)
2
Main board
5
Power
AMP board
Indice
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