BMZ-K33, CX-BK33 - Sony Audio Service Manual (repair manual)

Model
BMZ-K33 CX-BK33
Pages
109
Size
9.48 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
bmz-k33-cx-bk33.pdf
Date

View Sony BMZ-K33 / CX-BK33 Service Manual online

SERVICE MANUAL
Amplifier section
European models:
DIN power output (rated): 100 + 100 W 
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
120 + 120 W 
(6 ohms at 1 kHz, 10% 
THD)
Music power output (reference):
235 + 235 watts (6 ohms at 
1 kHz, 10% THD)
Other models:
The following measured at 120, 220 – 230, 240 V AC,
50/60 Hz
DIN power output (rated): 140 + 140 W 
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
180 + 180 W 
(6 ohms at 1 kHz, 10% 
THD)
Inputs
MD (AUX) IN L/R (phono jacks):
Sensitivity 1 V, 
impedance 47 kilohms
LINE IN AUDIO L/R (phono jacks):
Vo ltage 250 mV, 
impedance 47 kilohms
LINE IN VIDEO (phono jack):
1Vp-p, 75 ohms
MIC (phone jack) (Latin American model only):
Sensitivity 1 mV, 
impedance 10 kilohms
Outputs
PHONES (stereo mini jack):
Accepts headphones with 
an impedance of 32 ohms 
or more
SPEAKER:
Accepts impedance of 
6 ohms
MD (AUX) OUT L/R (phono jacks):
Voltage 250 mV, 
impedance 1 kilohm
VIDEO OUT (phono jack):
Max. output level 1Vp-p, 
unbalanced, Sync 
negative, load impedance 
75 ohms
DIGITA L OUT (European and Russian models only):
Sampling frequencies: 
44.1 kHz
Wavelength: 660 nm
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
Signal-to-noise ratio
More than 90 dB
Dynamic range
More than 90 dB
Tape deck section
Recording system
4-track 2-channel stereo
Frequency response
100 – 10,000 Hz, 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)
Antenna
FM lead antenna
Antenna terminals
75 ohms unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
European models:
531 – 1,602 kHz 
(with the tuning interval 
set at 9 kHz) 
Other models:
530 – 1,710 kHz 
(with the tuning interval 
set at 10 kHz) 
531 – 1,710 kHz 
(with the tuning interval 
set at 9 kHz)
Antenna
AM loop antenna, external 
antenna terminal
Intermediate frequency
450 kHz 
COMPACT DISC DECK RECEIVER
AEP Model
UK Model
E Model
CX-BK33
Ver 1.0  2004.05
SPECIFICATIONS
– Continued on next page –
9-877-873-01
2004E05-1
© 2004.05
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
CX-BK33 is the amplifier, CD player, tape deck
and tuner section in BMZ-K33.
Model Name Using Similar Mechanism
NEW
CD Section
CD Mechanism Type
CDM69BV-30CBD64NS
Base Unit Name
BU-30CBD64NS
Optical Pick-up Name
A-MAX.3
TAPE Section
Model Name Using Similar Mechanism
CX-BK1
Tape Transport Mechanism Type
CMAL1Z241A
CX-BK33
2
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.
The following caution label is located inside the 
apparatus.
General
Power requirements
European models:
230 V AC, 50/60 Hz
Other models:
120, 220 – 230, 240 V AC, 
50/60 Hz
Adjustable with voltage 
selector
Power consumption
European models:
130 W 
0.3 W (in Power Saving 
mode)
Other models:
155 W
0.3 W (in Power Saving 
mode)
Dimensions (w/h/d) incl. projecting parts and controls 
Amplifier/Tuner/Tape/CD section:
Approx. 207 
× 391 × 
439 mm
Mass
European models:
Approx. 9.0 kg
Other models:
Approx. 10.3 kg
Design and specifications are subject to change 
without notice
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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 
°C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
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  PUBLISHED  BY  SONY.
CX-BK33
3
You can play back the following discs on this 
system. Other discs cannot be played back.
List of playable discs
Discs that this system cannot 
play
• An 8 cm disc
• An 8 cm disc converted to a standard disc 
using an adaptor
• CD-ROMs
• CD-Rs/CD-RWs other than those recorded in 
the following formats:
– music CD format
– MP3  format that conforms to ISO9660
1)
 
Level 1/Level 2, Joliet or Multi Session
2)
• A  disc  that has a non-standard shape (e.g., 
card, heart).
• A  disc  with  paper or stickers on it.
• A  disc that has the adhesive, cellophane tape, 
or a sticker still left on it.
1)
ISO9660 Format
The most common international standard for the 
logical format of files and folders on a CD-ROM. 
There are several specification levels. In Level 1, 
file names must be in the 8.3 format (no more than 
eight characters in the name, no more than three 
characters in the extension “.MP3”) and in capital 
letters. Folder names can be no longer than eight 
characters. There can be no more than eight nested 
folder levels. Level 2 specifications allow file 
names and folder names up to 31 characters long. 
Each folder can have up to 8 trees.
For Joliet in the expansion format (file and folder 
names can have up to 32 characters), make sure of 
the contents of the writing software, etc.
2)
Multi Session
This is a recording method that enables adding of 
data using the Track-At-Once method. 
Conventional CDs begin at a CD control area called 
the Lead-in and end at an area called Lead-out. A 
Multi Session CD is a CD having multiple sessions, 
with each segment from Lead-in to Lead-out 
regarded as a single session.
Playable discs
Format of discs
Disc logo
Audio CDs
CD-R/CD-RW 
(audio data/MP3 files)
Notes on CD-R and CD-RW
• Some  CD-Rs or CD-RWs cannot be played 
on this system depending upon the recording 
quality or physical condition of the disc, or 
the characteristics of the recording device. 
Furthermore, the disc will not play if it has not 
been correctly finalized. For more 
information, see the operating instructions for 
the recording device.
• Discs  recorded on CD-R/CD-RW drives may 
not be played back because of scratches, dirt, 
recording condition or the driver’s 
characteristics.
• CD-R  and  CD-RW discs recorded in multi-
session that have not ended by “closing the 
session” are not supported.
• The  system may be unable to play MP3 
format files that do not have the “.MP3” 
extension.
• Attempting to play non-MP3 format files that 
have the “.MP3” extension may result in noise 
or malfunction.
• With  formats other than ISO9660 level 1 and 
2, folder names or file names may not be 
displayed correctly.
• The  following discs take a longer time to start 
playback.
– a  disc  recorded with complicated tree 
structure.
– a disc recorded in Multi Session.
– a  disc  to  which data can be added (non-
finalized disc).
Music discs encoded with 
copyright protection 
technologies
This product is designed to playback discs that 
conform to the Compact Disc (CD) standard. 
Recently, various music discs encoded with 
copyright protection technologies are marketed 
by some record companies. Please be aware that 
among those discs, there are some that do not 
conform to the CD standard and may not be 
playable by this product.
Cautions when playing a disc 
that is recorded in Multi 
Session
• If  the  disc  begins with a CD-DA session, it is 
recognized as a CD-DA (audio) disc, and only 
the first session will be played back.
• If  the disc begins with an MP3 session, it is 
recognized as an MP3 disc, and playback 
continues until a CD-DA (audio) session is 
encountered.
• The  playback range of an MP3 disc is 
determined by the tree structure of files 
produced by analyzing of the disc.
• A  disc  with  a mixed CD format will be 
recognized as a CD-DA (audio) disc.
• Data part of CD-Extras
1)
• Audio  part of Mixed CDs
2)
1)
CD-Extra: This format records audio (audio CD 
data) on the tracks in session 1 and data on the tracks 
in session 2.
2)
Mixed CD: This format records data on the first 
track and audio (audio CD data) on the second and 
subsequent tracks of a session.
CX-BK33
4
TABLE  OF  CONTENTS
1.
SERVICING NOTES
................................................
5
2.
GENERAL
Location of Controls ........................................................
7
3.
DISASSEMBLY
3-1.
Disassembly Flow ...........................................................
9
3-2.
Side Panel (L)/(R) ........................................................... 10
3-3.
Top Panel Block .............................................................. 10
3-4.
Front Panel Block ............................................................ 11
3-5.
MAIN Board .................................................................... 11
3-6.
Rear Panel Block ............................................................. 12
3-7.
Tuner (FM/AM) ............................................................... 12
3-8.
SPEAKER Board ............................................................ 13
3-9.
ACDC Board, Power Transformer .................................. 13
3-10. FRONT AMP Board Block ............................................. 14
3-11. CD Mechanism Deck (CDM69BV-30BD64NS) ............ 14
3-12. Base Unit Section (BU-30CBD64NS) ............................ 15
3-13. OP Assy ........................................................................... 15
3-14. SW (1) Board, SW (2) Board, SW (3) Board,
SW (4) Board, Bracket (Top) Assy .................................. 16
3-15. RELAY Board ................................................................. 16
3-16. Motor (Stocker) Assy (Stocker) (M761) ......................... 17
3-17. Motor (Roller) Assy (Roller) (M781) .............................. 17
3-18. Motor (Mode) Assy (Mode) (M771) ............................... 18
3-19. Rubber Roller (Slider) Assy ............................................ 18
3-20. Timing Belt (Front/Rear) ................................................. 19
3-21. Cam (Gear) ...................................................................... 19
3-22. SENSOR Board ............................................................... 20
3-23. Single Cassette Mechanism (CMAL1Z241A) ................ 20
4.
ASSEMBLY
4-1.
How To Install The Cam (Ejact Lock) ............................ 21
4-2.
How To Install The Cam (Gear) ...................................... 21
4-3.
How To Install The Gear (Mode 2) ................................. 22
4-4.
How To Install The Gear (Mode Cam) ............................ 22
4-5.
How To Install The Rotary Encoder (S702),
Gear (Stocker Communication) ....................................... 23
4-6.
How To Install The Cam (Stocker U/D) .......................... 23
4-7.
How To Install The Stocker Assy .................................... 24
4-8.
Phase Adjustment Between Pinions (Slider)
and Slider-1 To 5 (L/R) ................................................... 25
5.
TEST MODE
............................................................... 26
6.
ELECTRICAL  ADJUSTMENTS
DECK Section ................................................................. 28
CD Section ...................................................................... 29
7.
DIAGRAMS
7-1.
Block Diagram  – CD Section – ...................................... 31
7-2.
Block Diagram  – TUNER/TAPE/USB Section – ........... 32
7-3.
Block Diagram  – AMP Section – ................................... 33
7-4.
Block Diagram  – POWER SUPPLY Section – .............. 34
7-5.
Printed Wiring Board  – BD Board – .............................. 36
7-6.
Schematic Diagram  – BD Board – ................................. 37
7-7.
Printed Wirig Boards  – CHANGER Section – ............... 38
7-8.
Schematic Diagram  – CHANGER Section – ................. 39
7-9.
Printed Wiring Board  –DECK Board – .......................... 40
7-10. Schematic Diagram  – DECK Board – ............................ 41
7-11. Schematic Diagram  – MAIN Board (1/4) – ................... 42
7-12. Schematic Diagram  – MAIN Board (2/4) – ................... 43
7-13. Schematic Diagram  – MAIN Board (3/4) – ................... 44
7-14. Schematic Diagram  – MAIN Board (4/4) – ................... 45
7-15. Printed Wiring Board  – MAIN Board – ......................... 46
7-16. Printed Wiring Board  – FRONT AMP Board – ............. 47
7-17. Schematic Diagram  – FRONT AMP Board (1/2) – ....... 48
7-18. Schematic Diagram  – FRONT AMP Board (2/2) – ....... 49
7-19. Printed Wiring Board  – USB Board – ............................ 50
7-20. Schematic Diagram  – USB Board – ............................... 51
7-21. Printed Wiring Board  – MIC Board –
(Chirean and Peruvian models) ....................................... 52
7-22. Schematic Diagram  – MIC Board –
(Chirean and Peruvian models) ....................................... 53
7-23. Printed Wiring Board  – HEADPHONE Board – ........... 54
7-24. Schematic Diagram  – HEADPHONE Board – .............. 54
7-25. Printed Wiring Board  – SPEAKER Board – .................. 55
7-26. Schematica Diagram  – SPEAKER Board – ................... 55
7-27. Printed Wiring Board  – LCD Board – ............................ 56
7-28. Schematic Diagram  – LCD Board – ............................... 57
7-29. Printed Wiring Boards  – KEY Section – ........................ 58
7-30. Schematic Diagram  – KEY Section – ............................ 59
7-31. Printed Wiring Board  – ACDC Board – ......................... 60
7-32. Schematic Diagram  – ACDC Board – ............................ 61
7-33. Printed Wiring Board  – PT85 Board –
(AEP and UK models) ..................................................... 62
7-34. Schematic Diagram  – PT85 Board –
(AEP and UK models) ..................................................... 63
7-35. Printed Wiring Board  – PT96 Board –
(Chirean and Peruvian models) ....................................... 64
7-36. Schematic Diagram  – PT96 Board –
(Chirean and Peruvian models) ....................................... 65
8.
EXPLODED  VIEWS
8-1.
Panel Section ................................................................... 78
8-2.
Tape Mechanism Deck Section (CMAL1Z241A) ........... 79
8-3.
Front Boards Section ....................................................... 80
8-4.
Front Cabinet Section ...................................................... 81
8-5.
MAIN Board Section ....................................................... 82
8-6.
Chassis Section ................................................................ 83
8-7.
CD Mechanism Deck Section-1
(CDM69BV-30CBD64NS) ............................................. 84
8-8.
CD Mechanism Deck Section-2
(CDM69BV-30CBD64NS) ............................................. 85
8-9.
CD Mechanism Deck Section-3
(CDM69BV-30CBD64NS) ............................................. 86
8-10. CD Mechanism Deck Section-4
(CDM69BV-30CBD64NS) ............................................. 87
8-11. CD Mechanism Deck Section-5
(CDM69BV-30CBD64NS) ............................................. 88
8-12. CD Mechanism Deck Section-6
(CDM69BV-30CBD64NS) ............................................. 89
8-13. Base Unit Section (BU-30CBD64NS) ............................ 90
9.
ELECTRICAL  PARTS  LIST
................................ 91

Download Sony BMZ-K33 / CX-BK33 Service Manual (Repair Manual)

Here you can view online and download Sony BMZ-K33 / CX-BK33 Service Manual in PDF. Usually contens schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb. This Service Manual can help you recover, restore, fix, disassemble and repair Sony BMZ-K33 / CX-BK33 Audio.