HCD-VM330AV - Sony Audio Service Manual (repair manual)

Model
HCD-VM330AV
Pages
85
Size
11.56 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-vm330av.pdf
Date

View Sony HCD-VM330AV Service Manual online

SERVICE MANUAL
Amplifier section
Front speaker:
Continuous RMS power output
75 + 75 watts
(8 ohms at 1 kHz,
10% THD)
Total harmonic distortion less than 0.09%
(8 ohms at 1 kHz,
40 watts)
Center speaker:
Continuous RMS power output
25 watts
(8 ohms at 1 kHz,
10% THD)
Rear speaker:
Continuous RMS power output
25 + 25 watts
(8 ohms at 1 kHz,
10% THD)
Inputs
VIDEO/MD IN (phono jacks):
voltage 250 mV/450 mV,
impedance 47 kilohms
5.1CH:
FRONT (phono jacks)
voltage 450 mV,
impedance 47 kilohms
REAR (phono jacks)
voltage 450 mV,
impedance 47 kilohms
CENTER (phono jack)
voltage 450 mV,
impedance 47 kilohms
SUB WOOFER (phono jack):
voltage 450 mV,
impedance 47 kilohms
Outputs
PHONES (stereo phone jack):
accepts headphones of
8 ohms or more
FRONT SPEAKER:
accepts impedance of 8 to
16 ohms
SURROUND SPEAKER REAR:
accepts impedance of 8 to
16 ohms
SURROUND SPEAKER CENTER:
accepts impedance of
8 ohms
SUB WOOFER:
voltage 1 V,
impedance 1 kilohm
VIDEO OUT (phono jack):
max. output level 1 Vp-p,
unbalanced,
Sync negative,
load impedance 75 ohms
S-VIDEO OUT (4-pin/mini-DIN jack)
Y: 1 Vp-p, unbalanced,
Sync negative,
C: 0.286 Vp-p, load
impedance 75 ohms
VIDEO CD/CD player section
System
Compact disc and digital
audio system
Laser
Semiconductor laser
(
λ
= 795 nm)
Emission duration:
continuous
Frequency response
2 Hz – 20 kHz (
±
0.5 dB)
Wavelength
775 – 815 nm
Signal-to-noise ratio
More than 90 dB
Dynamic range
More than 90 dB
Video color system format NTSC, PAL
OPTICAL OUT (CD)
(Square optical connector jack, rear panel)
Wavelength
660 nm
Output Level
–18 dBm
Tape player section
Recording system
4-track 2-channel stereo
Frequency response
40 – 13,000 Hz (
±
3 dB),
using Sony TYPE I
cassette
This stereo system is equipped with the Dolby* Pro
Logic Surround decoder.
* Manufactured under license from Dolby
Laboratories.  Dolby ,  Pro Logic , and the
double-D symbol 
; are trademarks of Dolby
Laboratories. Confidential unpublished works.
'1992-1997 Dolby Laboratories. All rights
reserved.
E Model
HCD-VM330AV
Ver 1.2  2002.12
9-873-189-03
Sony Corporation
2002L0500-1
Home Audio Company
C
 2002.12
Published by Sony Engineering Corporation
COMPACT DISC DECK RECEIVER
SPECIFICATIONS
HCD-VM330AV is the Amplifier, Video CD/CD player,
Tape Deck and Tuner section in MHC-VM330AV.
– Continued on next page –
Model Name Using Similar Mechanism
NEW
CD
CD Mechanism Type
CDM64-30ABD61A
Section
Base Unit Name
BU-30ABD61A
Optical Pick-up Name
OP Assy (A-MAX. 3)
TAPE
Model Name Using Similar Mechanism
HCD-MG110
Section
Tape Transport Mechanism Type
CM8L6Z511A
2
HCD-VM330AV
TABLE  OF  CONTENTS
1.
SERVICING  NOTE
..................................................
4
2.
GENERAL
...................................................................
5
3.
DISASSEMBLY
3-1. Disassembly Flow ...........................................................
7
3-2. Upper Cover ....................................................................
8
3-3. Front Block Assy .............................................................
8
3-4. VIDEO Board ..................................................................
9
3-5. MAIN Board ...................................................................
9
3-6. Back Panel, DC Fan (M391) ........................................... 10
3-7. MAIN AMP Board, POWER Board,
VOL SEL Board .............................................................. 10
3-8. Middle (F) Assy, Bracket (Middle-R),
Power Bracket ................................................................. 11
3-9. CD Mechanism Deck (CDM64-30ABD61A) ................ 11
3-10. Base Unit (BU-30ABD61A) ........................................... 12
3-11. BU Holder Assy .............................................................. 12
3-12. Cassette Lid Assy (A)/(B) ............................................... 13
3-13. Mech Deck (TAPE) ......................................................... 13
4.
TEST  MODE
.............................................................. 14
5.
MECHANICAL  ADJUSTMENTS
....................... 15
6.
ELECTRICAL  ADJUSTMENTS
Deck Section ............................................................................. 15
CD Section ................................................................................ 17
Video Section ............................................................................ 18
Sensor Section ........................................................................... 19
7.
DIAGRAMS
7-1. Block Diagram – CD SERVO Section – ........................ 21
7-2. Block Diagram – AUDIO/VIDEO Section  – ................ 22
7-3. Block Diagram – TUNER/TAPE DECK Section  – ...... 23
7-4. Block Diagram – SURROUND Section – ...................... 24
7-5. Block Diagram – AMP Section – ................................... 25
7-6. Block Diagram
– DISPLAY/POWER SUPPLY Section – ...................... 26
7-7. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 27
7-8. Printed Wiring Board – BD Section – ............................ 28
7-9. Schematic Diagram – BD Section – ............................... 29
7-10. Printed Wiring Board – AUDIO/VIDEO Section – ....... 30
7-11. Schematic Diagram
– AUDIO/VIDEO Section (1/3) – .................................. 31
7-12. Schematic Diagram
– AUDIO/VIDEO Section (2/3) – .................................. 32
7-13. Schematic Diagram
– AUDIO/VIDEO Section (3/3) – .................................. 33
7-14. Printed Wiring Boards
– CD MOTOR/SENSOR Section – ................................ 34
7-15. Schematic Diagram
– CD MOTOR/SENSOR Section – ................................ 35
7-16. Printed Wiring Board – TC Section – ............................. 36
7-17. Schematic Diagram – TC Section – ............................... 37
7-18. Schematic Diagram – MAIN Section (1/4) – ................. 38
7-19. Schematic Diagram – MAIN Section (2/4) – ................. 39
7-20. Schematic Diagram – MAIN Section (3/4) – ................. 40
7-21. Schematic Diagram – MAIN Section (4/4) – ................. 41
7-22. Printed Wiring Board – MAIN Section – ....................... 42
7-23. Printed Wiring Boards – AMP Section – ........................ 44
7-24. Schematic Diagram – AMP Section – ............................ 45
7-25. Printed Wiring Boards – DISPLAY Section – ............... 46
7-26. Schematic Diagram – DISPLAY Section – .................... 47
7-27. Printed Wiring Board – CONTROL Section – ............... 48
7-28. Schematic Diagram – CONTROL Section – .................. 49
7-29. Printed Wiring Boards – POWER Section – .................. 50
7-30. Schematic Diagram – POWER Section – ...................... 51
7-31. IC Pin Function Description ........................................... 55
8.
EXPLODED  VIEWS
8-1. General Section ............................................................... 67
8-2. Front Panel Section ......................................................... 68
8-3. Chassis Section ............................................................... 69
8-4. Mechanism Deck Section (CDM64-30ABD61A) ......... 70
8-5. Base Unit Section (BU-30ABD61A) ............................. 71
9.
ELECTRICAL  PARTS  LIST
............................... 72
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
87.5 – 108.0 MHz
Antenna
FM lead antenna
Antenna terminals
75 ohms unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
530 – 1,710 kHz
(with the interval set at
10 kHz)
531 – 1,602 kHz
(with the interval set at
9 kHz)
Antenna
AM loop antenna
Antenna terminals
External antenna terminal
Intermediate frequency
450 kHz
General
Power requirements
110 – 120 V or 220 –
240 V AC, 50/60 Hz
Adjustable with voltage
selector
Power consumption
200 watts
Dimensions (w/h/d) incl. projecting parts and controls
Approx. 280 
×
 383 
×
 480
mm
Mass:
Approx. 12.1 kg
Design and specifications are subject to change
without notice.
3
HCD-VM330AV
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
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.
SAFETY-RELATED  COMPONENT  WARNING!!
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  PUB-
LISHED  BY  SONY.
The laser diode in the optical pick-up block may suffer electro-
static 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 emis-
sion, observe 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 waveforms is output three times.
NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing 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.
4
HCD-VM330AV
SECTION  1
SERVICING  NOTES
CD-TEXT TEST  DISC
This unit is able to display the test data (character information)
written in the CD on its fluorescent indicator tube.
The CD-TEXT TEST DISC (TGCS-313:4-989-366-01) is used
for checking the display.
To check, perform the following procedure.
Checking Method:
1. Press the
I/1
button to turn the power on, set the disc to the
disc table with the “test disc” label facing up, and chuck the
disc.
2. Press the 
[CD]
 button to set CD function, and press the
n N
button
to playback the disc.
3. The following will be displayed on the liquid crystal display.
Display : 1KHZ/0DB/L R
4. Pressing the 
[--       ]
 or 
[       +]
 button, select the track. The text
data of each track will be displayed.
For details of the displayed contents for each track, refer to “Table
1: CD-TEXT TEST DISC TEXT Data Contents”.
Restrictions in CD-TEXT Display
In this unit, some special characters will not be displayed prop-
erly. These will be displayed as a space or a character resembling
it.
Table 1: CD-TEXT TEST DISC TEXT Data Contents
(TRACKS No. 1 to 20:Normal Characters)
1
1kHz/0dB/L&R
2
20Hz/0dB/L&R
3
40Hz/0dB/L&R
4
100Hz/0dB/L&R
5
200Hz/0dB/L&R
6
500Hz/0dB/L&R
7
1kHz/0dB/L&R
8
5kHz/0dB/L&R
9
7kHz/0dB/L&R
10
10kHz/0dB/L&R
11
16kHz/0dB/L&R
12
18kHz/0dB/L&R
13
20kHz/0dB/L&R
14
1kHz/0dB/L&R
15
1kHz/–1dB/L&R
16
1kHz/–3dB/L&R
17
1kHz/–6dB/L&R
18
1kHz/–10dB/L&R
19
1kHz/–20dB/L&R
20
1kHz/–60dB/L&R
TRACK
No.
Displayed Contents
Note:
 Track No. 21 to 99 are not displayed.
.
>
CLEANING  OBJECTIVE  LENS  OF  OPTICAL  PICK-UP
• In cleaning the objective lens of optical pick-up, be sure the
following below.
(Figure A)
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)
2
Remove the 
magnet assy.
1
Open the torsion holder 
(magnet) in direction of 
arrow 
A
.
A
optical pick-up
bracket (top 60) hole
3
Put a cotton bud into 
the hole on the bracket 
(top 60) and clean the 
OP lens.
5
HCD-VM330AV
SECTION  2
GENERAL
This section is extracted from
instruction manual.
4
Parts Identification
5.1CH/VIDEO (MD) 5 (34)
AUDIO IN L jack wk (35)
AUDIO IN R jack wj (35)
CD 5 (13, 16, 27)
CD SYNCHRO wh (27, 28)
CLEAR w; (17, 18, 40)
Deck A es (26)
Deck B 0 (26)
DIRECTION ea (26)
DISC ACCESS ql (12, 13, 16,
17)
Display window 4
DISPLAY wd (11, 19, 25, 40)
ENTER qk (11, 17, 18, 25, 28, 29)
FRONT qd (31)
GAME e; (32, 35)
KEYBOARD INPUT jack ws
(33)
LINK qg (31)
MENU ea (18, 24)
PHONES jack wa
PLAY MODE wf (17, 28)
PRESET EQ 7 (30)
PRO LOGIC qs (10, 31)
PUSH OPEN (Front cover) qj
(12)
REAR qf (31)
REC PAUSE/START wh (27, 28)
REPEAT wg (14)
STEREO/MONO wg (25)
SURROUND qa (31)
SURROUND MODE 8 (31)
TAPE A/B 5 (26)
TIMER SELECT 3 (29, 33)
TIMER SET 3 (11, 29, 32)
TUNER/BAND 5 (24)
VIDEO IN jack wl (35)
VOLUME control qh
BUTTON DESCRIPTIONS
Z (deck A) 1
=/1 (power) 2
m (rewind) 6
n N (play) 6
X PAUSE 6
M (fast forward) 6
x (stop) 6
— . (go back) 6
> + (go forward) 6
Z (deck B) 9
The items are arranged in alphabetical order.
Refer to the pages indicated in parentheses ( ) for details.
Main unit
1
es
ea
e;
wl
wk
wj
wh
wg
wf
wd
ws
wa
2 3 4
56 7 8
9
qs
w;
ql
qd
0
qa
qf
qg
qh
qj
qk
6
HCD-VM330AV
Remote Control
qg
qh
ql
qk
qj
w;
1 2 3 4
wa
ws
6
7
8
9
5
qf
0
qd
qa
qs
wd
wf
wg
wh
wj
wk
wl
e;
ea
es
ed
ef
eg
eh
ek
ej
5.1CH 0 (36)
CD ql (13, 16, 27)
CENTER +/— eg (10)
CLOCK/TIMER SELECT 2
(29, 33)
CLOCK/TIMER SET 3 (11, 29,
32)
DBFB qg (30)
DISPLAY qf (11, 19, 25)
ENTER wg (11, 15, 17, 18, 25,
28, 29)
GAME qa (32, 35)
GROOVE wk (30)
NEXT wj (14, 15, 22)
Number buttons 7 (14, 16)
ON SCREEN ek (20)
PICTURE EFFECT ej (23)
PLAY MODE 4 (17, 28)
PRESET EQ qj (30)
PREV wj (14, 15, 22)
PRO LOGIC eh (10, 31)
REAR +/— wh (10)
REPEAT 6 (14)
RETURN O wf (15)
SCROLL qd (19)
SELECT ed (15)
SLEEP ws (32)
SPECIAL MENU wd (21, 22)
SURROUND qh (31)
TAPE A/B w; (26)
TEST TONE ef (10)
TUNER BAND qk (24)
TV @/1 (power) 8 (9)
TV CH +/— 9 (9)
TV/VIDEO 1 (9)
TV VOL +/— wa (9)
VIDEO (MD) qs (34)
VOL — e;
VOL + es
BUTTON DESCRIPTIONS
@/1 (power) 5
N (play) ed
X (pause) ed
x (stop) ed
. (go back) wj
m (rewind) wj
M (fast forward) wj
> (go forward) wj
TDISC/DISCt wl ea
Setting the time
1
 Turn on the system.
2
Press TIMER SET (or CLOCK/TIMER
SET on the remote).
When you set the clock for the first time, go
to step 5.
3
Press — . or + (or . or >
on the remote) repeatedly to select
CLOCK SET .
4
Press ENTER.
5
Press — . or + (or . or >
on the remote) repeatedly to set the
hour.
6
Press ENTER.
7
Press — . or + (or . or >
on the remote) repeatedly to set the
minute.
8
Press ENTER.
Tip
If you made a mistake or want to change the time,
start over from step 1.
Note
The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.
HCD-VM330AV
7
• This set can be disassembled in the order shown below.
3-1.
DISASSEMBLY  FLOW
SECTION  3
DISASSEMBLY
3-2.  UPPER COVER
(Page 8)
3-5.  MAIN BOARD
(Page 9)
3-6.  BACK PANEL,
DC FAN (M391) 
(Page 10)
3-7.  MAIN AMP BOARD, 
POWER BOARD,
VOL SEL BOARD
(Page 10)
3-12. CASSETTE LID ASSY (A)/(B)
(Page 13)
3-3.  FRONT BLOCK ASSY
(Page 8)
3-4.  VIDEO BOARD
(Page 9)
3-3.  FRONT BLOCK ASSY
(Page 8)
SET
3-11.  BU HOLDER ASSY
(Page 12)
3-13.  MECH DECK (TAPE)
(Page 13)
3-8.  MIDDLE (F) ASSY, 
BRACKET (MIDDLE-R),
POWER BRACKET
(Page 11)
3-9.  CD MECHANISM DECK
(CDM64-30ABD61A)
(Page 11)
3-10.  BASE UNIT
(BU-30ABD61A)
(Page 12)
Note 1: The process described in     can be performed in any order.
Note 2: Without completing the process described in     , the next process can not be performed.
Note 3: Illustration of disassembly is omitted.
HCD-VM330AV
8
3-3.
FRONT  BLOCK  ASSY
Note:
 Follow the disassembly procedure in the numerical order given.
3-2.
UPPER  COVER
1
three screws
(BVTP3 
×
 8)
2
five screws
(BVTP3 
×
 8)
2
two screws
(BVTP3 
×
 8)
3
upper cover
1
three screws
(BVTP3 
×
 8)
7
two bosses
6
screw (KTP3 
×
 8)
3
screw (BVTP3 
×
 8)
4
two herness
5
three screws
(BVTP3 
×
 8)
6
screw (KTP3 
×
 8)
8
front block assy
7
two bosses
2
three connectors
(CN310, 503, 803)
2
connector (CN315)
1
wire (flat type) (10 core)
(CN311)
1
wire (flat type) (11 core)
(CN312)
1
wire (flat type) (17 core)
(CN301)
HCD-VM330AV
9
3-4.
VIDEO  BOARD
3-5.
MAIN  BOARD
3
two screws 
(BVTP3 
×
 10)
5
two screws 
(BVTP3 
×
 10)
4
MPEG bracket
6
VIDEO board
1
wire (flat type) (25 core)
(CN501)
1
wire (flat type) (13 core)
(CN502)
2
screw (BVTP3 
×
 8)
3
three screws
(BVTP3 
×
 8)
3
two screws
(BVTP3 
×
 8)
3
screw (BVTP3 
×
 8)
3
screw
(BVTP3 
×
 8)
4
screw
(BVTP3 
×
 8)
5
MAIN board
1
wire (flat type) (18 core)
(CN309)
2
connectors
(CN304)
2
connectors
(CN903)
2
connectors
(CN317)
2
connectors
(CN305)
2
connector
(CN313)
HCD-VM330AV
10
3-7.
MAIN  AMP  BOARD,  POWER  BOARD,  VOL  SEL  BOARD
3-6.
BACK  PANEL,  DC  FAN (M391)
5
back panel
1
two screws
(BVTP3 
×
 10)
1
two screws
(BVTP3 
×
 10)
1
thirteen screws
(BVTP3 
×
 10)
3
four screws
(BVTP3 
×
 10)
4
DC fan (M391)
2
5
center bracket
4
three screws
(BVTP3 
×
 8)
2
two screws
(BVTP3 
×
 8)
1
connector
(CN502)
3
MAIN AMP board
8
POWER board
7
VOL SEL board
6
two screws
(BVTP4 
×
 8)
6
two screws
(BVTP4 
×
 8)
2
four screws
(BVTP3 
×
 8)

Download Sony HCD-VM330AV Service Manual (Repair Manual)

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