Aiwa CX-BK7 User manual

SERVICE MANUAL
This system incorporates Dolby* Digital, Dolby Pro
Logic (II) adaptive matrix surround decoder, and the
DTS** Digital Surround System.
*Manufactured under license from Dolby
Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are
trademarks of Dolby Laboratories.
**Manufactured under license from Digital Theater
Systems, Inc. “DTS” and “DTS Digital Surround”
are registered trademarks of Digital Theater
Systems, Inc.
US and foreign patents licensed from Dolby
Laboratories.
DVD DECK RECEIVER
AEP Model
UK Model
E Model
Australian Model
CX-BK7
Ver 1.1 2004.02
9-961-333-02 Sony Corporation
2004B05-1 Home Audio Company
C2004.02 Published by Sony Engineering Corporation
SPECIFICATIONS
•CX-BK7 is the amplifier, disc player, tape
deck and tuner section in BMZ-K7D.
Amplifier section
The following measured at AC 120, 127, 220, 240 V,
50/60 Hz
Rated Power Output at Stereo mode
Continuous RMS power output (reference)
Front speaker: 150 + 150 watts
(6 ohms at 1 kHz, 10%
THD)
Center speaker: 50 watts (8 ohms at 1 kHz,
10% THD)
Surround speaker: 50 watts (8 ohms at 1 kHz,
10% THD)
Inputs
LINE IN AUDIO (phono jacks):
voltage 1.1V, impedance
47 kilohms
LINE IN VIDEO (phono jack):
max. input level 1Vp-p,
unbalanced, Sync
negative, impedance
75 ohms
MD (AUX) IN (phono jacks):
voltage 1.1V, impedance
47 kilohms
MIC (phone jack): sensitivity 1 mV,
impedance 10 kilohms
Model Name Using Similar Mechanism NEW
DVD DVD Mechanism Type CDM69DV-DVBU16V
Section Optical Traverse Unit Name DBU-1
Tape deck Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type CMAL1Z241A
– Continued on next page –
Outputs
MD (AUX) OUT (phono jacks):
voltage 500 mV,
impedance 4.7 kilohms
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
COMPONENT VIDEO OUT:
Y: 1 Vp-p, 75 ohms
P
B , P R : 0.7 Vp-p, 75 ohms
PHONES (stereo mini jack):
accepts headphones of
32 ohms or more
Frontspeaker: Useonlythesupplied
speaker SX-BK7
Surround speaker: Use only the supplied
speaker SX-BK7R
Center speaker: Use only the supplied
speaker SX-BK7C
SUB WOOFER OUT: voltage 1 V,
impedance 1 kilohm
Disc player section
System Compact disc and digital
audio and video system
Laser Semiconductor laser
(DVD: λ=657 nm,
CD: λ=793 nm)
Emission duration:
continuous
Frequency response DVD (PCM 48 kHz):
2 Hz −22 kHz (±1 dB)
CD: 2 Hz −20 kHz (±1 dB)
Video color system format NTSC, PAL
OPTICAL DIGITAL OUT (Euro/UK, Russian models
(Square optical connector jack, rear panel)
Wavelength 660 nm
Tape decksection
Recording system 4-track 2-channel stereo
Frequency response 100 −10,000 Hz (±3 dB),
usingSonyTYPE I cassette
only)

CX-BK7
2
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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED
LINE WITH 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 PUB-
LISHED BY SONY.
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 oc-
cur 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.
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
Russian model: 65.0 - 74.0 MHz
87.5 - 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
Latin American models: 530 −1,710 kHz
(with the interval set at
10 kHz)
531 −1,710 kHz
(with the interval set at
9k Hz)
Saudi Arabian model: 531−1,602 kHz (with the
interval set at 9 kH z)
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
General
Power requirements
Euro/UK, Russian models: 230 V AC, 50/60 Hz
Australian model: 230 −240 V AC, 50/60 Hz
Saudi Arabian model: 120 −127 V, 220 V AC,
50/60 Hz
Adjustable with voltage
selector
Other models: 120 V, 220 V or 230 −
240 V AC, 50/60 Hz
Adjustable with voltage
selector
Power consumption 250 watts
0.4 watts (in ECO MODE)
Dimensions (w/h/d) Approx. 211 ×379 ×
419 mm
Mass Approx. 10.8 kg
Design and specifications are subject to change
without notice.
This appliance is
classified as a CLASS 1
LASER product. This
label is located on the
rear exterior.
The following caution label is located inside the
apparatus.

CX-BK7
3
You can play back the following discs on this
system. Other discs cannot be played back.
List of playable discs
Playable discs
Format of
discs Disc logo Contents
DVD VIDEOs Audio +
Video
VIDEO CDs Audio +
Video
Audio CDs Audio
CD-R/CD-RW
(audio data)
Audio
The “DVD VIDEO” logo is a trademark.
Region code of DVDs you can
play on this system
Your system has a region code printed on the
back of the unit and will only play DVDs labeled
with identical region code.
DVDs labeled will also be played on this
system.
If you try to play any other DVD, the message
“Playback prohibited by area limitations.” will
appear on the TV screen. Depending on the
DVD, no region code indication may be labeled
even though playing the DVD is prohibited by
area restrictions.
Discs that this system cannot
play
•CD-ROMs(except for extension “.MP3,”
“.JPG,” or “.JPEG”)
•CD-Rs/CD-RWs other than those recorded in
the following formats:
–music CD format
–video CD format
–MP3/JPEG format that conforms to
ISO9660*
1
Level 1/Level 2, Joliet or Multi
Session*
2
CD-R/CD-RW
(MP3 files)
Audio
CD-R/CD-RW
(JPEG files)
Video
Format of
discs Disc logo Contents
ALL
Region code
(Euro/UK, Russian models)
DVD DECK RECEIVER
AC:230V 50/60Hz W
MODEL NO. CX-BK7
SERIAL NO.
SERIAL NO.AREA
4-249-187-2 CEL/CEK
Sony Corporation
X
X
Region code
(except Euro/UK, Russian
models)
•Data part of CD-Extras
•Super Audio CDs
•Progressive JPEG format files cannot be
played on this system.
•DVD-RWs in VR mode (DVD-RWs created
in VR (Video Recording) mode allow the
contents to be programed or edited.)
•DVD-ROMs
•DVD Audio discs
•ADVD with a different region code.
•Audiotracks in MP3PRO format.
•Adiscthat has a non-standard shape (e.g.,
card, heart).
•Adiscwithpaper or stickers on it.
•Adiscthat 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” or “.JPG”) 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 64 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.
CD-Extra: This format records audio (audio CD
data) on the tracks in session 1 and data on the tracks
in session 2.

CX-BK7
4
Notes on discs
•Thissystem can play CD-R/CD-RW discs
edited by the user. However, note that
playback of some discs may not be possible
depending on the recording device used for
recording or the disc condition.
•Discsrecorded on CD-R/CD-RW drives may
not be played back because of scratches, dirt,
recording condition or the driver’s
characteristics.
•CD-Rand CD-RW discs that have not been
correctly finalized (processing to allow play
by a normal CD player) cannot be played.
•CD-R and CD-RW discs recorded in multi-
session that have not ended by “closing the
session” are not supported.
•Thesystem may be unable to play MP3/JPEG
format files that do not have the extender
“.MP3,” “.JPG,” or “.JPEG.”
•Attempting to play non-MP3/JPEG format
files that have the extender “.MP3,” “.JPG,”
or “.JPEG” may result in noise or
malfunction. Playback is possible up to 8
levels.
•Withformats other than ISO9660 level 1 and
2, folder names or file names may not be
displayed correctly.
•Thefollowing discs take a longer time to start
playback:
–adisc recorded with a complicated tree
structure.
–adiscrecorded in Multi Session.
–adisc to which data can be added (non-
finalized disc).
•Some CD-Rs, CD-RWs, DVD-Rs or DVD-
RWs (in video mode) (DVD-RWs created in
video mode have the same format as a DVD
VIDEO) 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.
•Adiscrecorded in packet write format cannot
be played.
Note on playback operations
of DVDs and VIDEO CDs
Some playback operations of DVDs and VIDEO
CDs may be intentionally set by software
producers. Since this system plays DVDs and
VIDEO CDs according to the disc contents the
software producers designed, some playback
features may not be available. Also, refer to the
instructions supplied with the DVDs or VIDEO
CDs.
Copyrights
This product incorporates copyright protection
technology that is protected by U.S. patents and
other intellectual property rights. Use of this
copyright protection technology must be
authorized by Macrovision, and is intended for
home and other limited viewing uses only unless
otherwise authorized by Macrovision. Reverse
engineering or disassembly is prohibited.
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
•This system can play Multi Session CDs when
an MP3 audio track is contained in the first
session. Any subsequent MP3 audio tracks
recorded in later sessions can also be played
back.
•This system can play Multi Session CDs when
a JPEG image file is contained in the first
session. Any subsequent JPEG image files
recorded in later sessions can also be played
back.
•Ifaudio tracks and images in music CD
format or video CD format are recorded in the
first session, only the first session will be
played back.

CX-BK7
5
TABLE OF CONTENTS
1. SERVICING NOTES ................................................ 6
2. GENERAL ................................................................... 8
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 9
3-2. Panel ................................................................................ 10
3-3. Top Panel Block .............................................................. 10
3-4. Front Panel Assy ............................................................. 11
3-5. Shield Plate...................................................................... 11
3-6. MAIN Board ................................................................... 12
3-7. Rear Cover....................................................................... 12
3-8. Tuner (FM/AM) .............................................................. 13
3-9. SP Board.......................................................................... 13
3-10. ACDC Board, Power Transformer.................................. 14
3-11. FRONT AMP/SUR AMP Board ..................................... 14
3-12. DVD Mechanism Deck (CDM69DV-DVBU16V) ......... 15
3-13. Signal Cassette Mechanism ............................................ 15
3-14. Optical Pick-Up Section (DVBU16V) ........................... 16
3-15. Optical Traverse Unit (Service Assy, DBU-1) ............... 16
3-16. SW (1) Board, SW (2) Board, SW (3) Board,
SW (4) Board, Bracket (TOP) Assy ............................... 17
3-17. RELAY Board ................................................................. 17
3-18. Motor (Stocker) Assy (Stocker) (M761) ........................ 18
3-19. Motor (Roller) Assy (Roller) (M781)............................. 18
3-20. Motor (Mode) Assy (Mode) (M771) .............................. 19
3-21. Rubber Roller (Slider) Assy ........................................... 19
3-22. Timing Belt (Front/Rear) ................................................ 20
3-23. Cam (Gear) ...................................................................... 20
3-24. SENSOR Board............................................................... 21
4. ASSEMBLY
4-1. How to Install the Cam (Eject Lock).............................. 22
4-2. How to Install the Cam (Gear)........................................ 22
4-3. How to Install the Gear (Mode 2)................................... 23
4-4. How to Install the Gear (Mode Cam) ............................. 23
4-5. How to Install the Rotary Encorder (S702),
Gear (Stocker Communication) ...................................... 24
4-6. How to Install the Cam (Stocker U/D) ........................... 24
4-7. How to Install the Stocker Assy ..................................... 25
4-8. Phase Adjustment Between Pinions (Slider)
and Slider-1 to 5 (L/R).................................................... 26
5. TEST MODE.............................................................. 27
6. ELECTRICAL ADJUSTMENTS
DVD Section ................................................................... 37
DECK Section ................................................................. 37
7. DIAGRAMS
7-1. Block Diagram – RF SERVO Section – ......................... 38
7-2. Block Diagram – CHANGER/VIDEO Section – .......... 39
7-3. Block Diagram – TUNER/TAPE/USB Section – .......... 40
7-4. Block Diagram – AMP Section – ................................... 41
7-5. Block Diagram
– PANEL/POWER SUPPLY Section – .......................... 42
7-6. Note for Printed Wiring Boards
and Schematic Diagrams ................................................ 43
7-7. Printed Wiring Board – RF Board – ............................... 44
7-8. Schematic Diagram – RF Board – .................................. 45
7-9. Printed Wiring Boards – CHANGER Section –............. 46
7-10. Schematic Diagram – CHANGER Section – ................. 47
7-11. Printed Wiring Board
– MB03 Board (Side A) – ............................................... 48
7-12. Printed Wiring Board
– MB03 Board (Side B) – ............................................... 49
7-13. Schematic Diagram – MB03 Board (1/8) – ................... 50
7-14. Schematic Diagram – MB03 Board (2/8) – ................... 51
7-15. Schematic Diagram – MB03 Board (3/8) – ................... 52
7-16. Schematic Diagram – MB03 Board (4/8) – ................... 53
7-17. Schematic Diagram – MB03 Board (5/8) – ................... 54
7-18. Schematic Diagram – MB03 Board (6/8) – ................... 55
7-19. Schematic Diagram – MB03 Board (7/8) – ................... 56
7-20. Schematic Diagram – MB03 Board (8/8) – ................... 57
7-21. Printed Wiring Board – VIDEO Board –........................ 58
7-22. Schematic Diagram – VIDEO Board – .......................... 59
7-23. Printed Wiring Board – DECK Board – ......................... 60
7-24. Schematic Diagram – DECK Board –............................ 61
7-25. Printed Wiring Board – USB AUX Board –................... 62
7-26. Schematic Diagram – USB AUX Board –...................... 63
7-27. Printed Wiring Board – MIC Board – ............................ 64
7-28. Schematic Diagram – MIC Board – ............................... 65
7-29. Schematic Diagram – MAIN Board (1/4) – ................... 66
7-30. Schematic Diagram – MAIN Board (2/4) – ................... 67
7-31. Schematic Diagram – MAIN Board (3/4) – ................... 68
7-32. Schematic Diagram – MAIN Board (4/4) – ................... 69
7-33. Printed Wiring Board – MAIN Board – ......................... 70
7-34. Printed Wiring Board – FRONT AMP Board – ............. 71
7-35. Schematic Diagram – FRONT AMP Board (1/2) – ....... 72
7-36. Schematic Diagram – FRONT AMP Board (2/2) – ....... 73
7-37. Printed Wiring Board – SURAMP Board – ................... 74
7-38. Schematic Diagram – SURAMP Board – ...................... 75
7-39. Printed Wiring Boards
– HEADPHONE/SP Boards – ........................................ 76
7-40. Schematic Diagrams
– HEADPHONE/SP Boards – ........................................ 77
7-41. Printed Wiring Boards – PANEL Section (1/2) – .......... 78
7-42. Schematic Diagram – PANEL Section (1/2) – ............... 79
7-43. Printed Wiring Boards – PANEL Section (2/2) – .......... 80
7-44. Schematic Diagram – PANEL Section (2/2) – ............... 81
7-45. Printed Wiring Boards
– ACDC Board (Except Saudi Arabia model) – ............. 82
7-46. Schematic Diagram
– ACDC Board (Except Saudi Arabia model) – ............. 83
7-47. Printed Wiring Board
– ACDC Board (Saudi Arabia model) – ......................... 84
7-48. Schematic Diagram
– ACDC Board (Saudi Arabia model) – ......................... 85
7-49. Printed Wiring Board – PT96 Board – ........................... 86
7-50. Schematic Diagram – PT96 Board – .............................. 87
7-51. IC Pin Function Description ........................................... 98
8. EXPLODED VIEWS
8-1. Side Panel Section.......................................................... 114
8-2. Top Panel Section........................................................... 115
8-3. Front Block-1
(KEY LED RMC/USB AUX Board Section)................ 116
8-4. Front Block-2
(LCD VOL Board Section) ............................................ 117
8-5. Front Block-3
(Cabinet Front Assy Section)......................................... 118
8-6. MAIN/ACDC Board Section ......................................... 119
8-7. MB03 Board Section...................................................... 120
8-8. Power Transformer Section ........................................... 121
8-9. FRONT AMP/SUR AMP Board Section....................... 122
8-10. DVD Mechanism Deck Section-1
(CDM69DV-DVBU16V) ............................................... 123
8-11. DVD Mechanism Deck Section-2
(CDM69DV-DVBU16V) ............................................... 124
8-12. DVD Mechanism Deck Section-3
(CDM69DV-DVBU16V) ............................................... 125
8-13. DVD Mechanism Deck Section-4
(CDM69DV-DVBU16V) ............................................... 126
8-14. DVD Mechanism Deck Section-5
(CDM69DV-DVBU16V) ............................................... 127
8-15. DVD Mechanism Deck Section-6
(CDM69DV-DVBU16V) ............................................... 128
8-16. Optical Traverse Unit Section (DVBU16V).................. 129
9. ELECTRICAL PARTS LIST .............................. 130

6
CX-BK7 SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
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.
RELEASING THE DISC LOCK
The disc lock function for the antitheft of an demonstration
disc in the store is equipped.
Releasing Procedure :
While pressing the [ENTER] key, press the Zkey for 5 seconds.
The message “UNLOCKED” is displayed and the disc is unlocked.
Note: When “LOCKED” is displayed, the disc lock is not released by
turning power on/off with the I/1key.
•MODEL IDENTIFICATION
MODEL PART No.
Chilean and Peruvian models 4-249-187-1[]
AEP and UK models 4-249-187-2[]
Mexican model 4-249-187-3[]
Saudi Arabia model 4-249-187-4[]
Singapore and Malaysia models 4-249-187-5[]
Australian model 4-249-187-6[]
CIS model 4-249-187-7[]
– Rear Cover –
PART No.
SERVICE POSITION
–Tape mechanism deck –
Connect the wire (flat type) (8 core)
to the main board (CN903) and
the mechanism deck.
Connect the wire (flat type) (11 core)
to the deck board (CN008) and the main board (CN009).

7
CX-BK7
– DVD mechanism deck –
•In checking the DVD mechanism deck section, prepare two extension jigs (Part No. J-2501-103-A: 1mm Pitch, 29 cores, Length
300mm/Part No. J-2501-248-A: 1mm Pitch, 27 cores, Length 300mm).
Note: The DVD mechanism deck of this model is a vertical type and putting it vertically as shown in the figure is the standard position.
When checking signals such as RF waveforms, operate it with the DVD mechanism deck in the standard position as shown below.
– MAIN board, ACDC board and MB03 board –
•For connecting the DVD mechanism deck, prepare three extension jigs. (Refer to “– DVD mechanism deck –”)
•In checking the MAIN/ACDC/MB03 boards, prepare three extension jigs (Part No. J-2501-231-A: 1mm Pitch, 15 cores, Length 300mm/
Part No. J-2501-243-A: 1mm Pitch, 17 cores, Length 300mm/Part No. J-2501-265-A: 4 pin, Length 300mm).
Connect the extension jig (J-2501-248-A)
to the relay board (CN201) and
the main board (CN901).
Connect the extension jig (J-2501-103-A)
to the RF board (CN002) and
the MBO3 board (CN501).
front AMP board
SURAMP board
SP board
video board
Connect the extension jig
(J-2501-231-A) to the video
board (CN802) and the SP
board (CN312).
PT96 board
ACDC board
MB03 board
DVD mechanism deck
tuner unit
main board
front panel section
Connect the extension jig
(J-2501-243-A) to the video
board (CN801) and the MB03
board (CN105).
Connect the extension jig
(J-2501-265-A) to the ACDC
board (CN004) and the main
board (CN007).

8
CX-BK7 SECTION 2
GENERAL This section is extracted from
instruction manual.
•LOCATION OF CONTROLS
Main unit
1Display window
2VOLUME control
3PLAY MODE
4DISPLAY
*1
4RDS
*1
5MODE
6TUNER PRESET CLEAR
7Disc slot
8MULTI JOG
9ENTER
q; PHONES jack
qa MIC LEVEL
qs MIC jack
qd SELECT DIRECTION
nN
qf TUNING −./m
qf TUNING + M/>
qg DISC SELECT
qh LINE IN
qj USB jack
qk Z EJECT/DISC CHANGE
ql ALBUM/PLAY LIST+/−
w;
(Remote sensor)
wa CD SYNC
wa REC PAUSE/START
ws TUNER PRESET SET
wd i-Bass
wf BASS
wg SOUND FIELD
wh TUNER/BAND
wj TREBLE/MIDDLE
wk FUNCTION
wl [/1(power)
[/1(power) wl
X(pause) ws
Z(eject) qk
x(stop) 6
M/>(fast forward/
TUNING +) qf
nN SELECT DIRECTION
qd
./m(rewind/TUNING −)
qf
(Remote sensor) w;
*1
(except Euro/UK models):
DISPLAY
(Euro/UK models):
RDS function
BUTTON DESCRIPTIONS
SOUND FIELD
TUNER PRESET
CLEAR
TUNING
ALUBAM/PLAYLIST
DISC SELECT
SELECT
DIRECTION
SET
CD SYNC
REC PAUSE/
START
DISC CHANGE
ZEJECT
TREBLE /
MIDDLE
BASS
VOLUME
PLAYMODE
DISPLAY
MODE
ENTER
PHONES
MIC LEVEL
MIC
MIN XAM
LINE IN
AUDIO
L
R
VIDEO
FUNCTION
TUNER/BAND
3
1
2
4
5
Remote control
1FUNCTION
*
2[/1
3REPEAT
4SOUND FIELD
5AUDIO
6SUBTITLE
7ANGLE
8DVD SETUP
9DISC SKIP
q; DVD MENU
qa M/m/</,
qs DVD DISPLAY
qd VOL +/−
qf FM MODE
qg TUNER/BAND
qh ECHO
qj KARAOKE
qk CLEAR)
ql AMP MENU
w; CLOCK/TIMER SELECT
wa CLOCK/TIMER SET
ws KEY CONTROL
# / 2
wd ALBUM +/−
wf SLOW −/+
wg X(pause)
wh TUNING −/+
wj x(stop)
wk PRESET −/PREV .
wk PRESET +/NEXT >
wl SELECT bB
e; ORETURN
ea ENTER
es DVD TOP MENU
ed Number buttons
ef DISPLAY
eg PLAY MODE
[/12
x(stop) wj
bB (SELECT) wl
X(pause) wg
M/m/</,qa
m(TUNING −)wh
M(TUNING +) wh
.(PRESET −/PREV) wk
>(PRESET +/NEXT) wk
t(SLOW —)wf
T(SLOW +) wf
# (KEY CONTROL) ws
2 (KEY CONTROL) ws
*
Switches the active function: DVD,
USB, TAPE, TUNER, VIDEO, MD.
BUTTON DESCRIPTIONS

CX-BK7
9
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SECTION 3
DISASSEMBLY
3-2. PANEL
(Page 10)
3-5. SHIELD PLATE
(Page 11)
3-6. MAIN BOARD
(Page 12)
3-22. TIMING BELT
(FRONT/REAR)
(Page 20)
3-23. CAM (GEAR)
(Page 20)
3-24. SENSOR BOARD
(Page 21)
3-11. FRONT AMP/SURAMP BOARD
(Page 14)
3-12. DVD MECHANISM DECK
(CDM69DV-DVBU16V)
(Page 15)
3-14. OPTICAL PICK-UP
SECTION
(DVBU16V)
(Page 16)
3-16. SW (1) BOARD,
SW (2) BOARD,
SW (3) BOARD,
SW (4) BOARD,
BRACKET (TOP) ASSY
(Page 17)
3-18. MOTOR (STOCKER)
ASSY (STOCKER)
(M761)
(Page 18)
3-17. RELAY BOARD
(Page 17)
3-15. OPTICAL TRAVERSE UNIT
(SERVICE ASSY, DBU-1)
(Page 16) 3-19. MOTOR (ROLLER)
ASSY (ROLLER)
(M781)
(Page 18)
3-21. RUBBER ROLLER
(SLIDER) ASSY
(Page 19)
3-20. MOTOR (MODE)
ASSY (MODE)
(M771)
(Page 19)
3-8. TUNER (FM/AM)
(Page 13) 3-9. SP BOARD (Page 13)
3-4. FRONT PANEL
ASSY
(Page 11)
3-7. REAR COVER
(Page 12) 3-8. TUNER (FM/AM) (Page 13) 3-9. SP BOARD (Page 13) 3-13. SIGNAL CASSETTE
MECHANISM
(Page 15)
3-3. TOP PANEL BLOCK
(Page 10)
3-10. ACDC BOARD, POWER TRANSFORMER
(Page 14)
SET 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: Tape deck is not loaded in US model.

CX-BK7
10
Note: Follow the disassembly procedure in the numerical order given.
3-2. PANEL
3-3. TOP PANEL BLOCK
1 three screws
(BVTP3
× 10)
6 three screws
(BVTP3
× 10)
7 four screws
(BVTP3
× 10)
2 four screws
(BVTP3
× 10)
5 panel (left)
3 four claws
8 four claws
4
9
0
right panel
1 three screws
(BVTP3
× 10)
1 two screws
(BVTP3
× 10)
1 two screws
(BVTP3
× 10)
2 three claws
4 wire (flat type) (8core)
(CN903)
3
6
top panel block
5 wire (flat type) (11core)
(CN009)

CX-BK7
11
3-4. FRONT PANEL ASSY
3-5. SHIELD PLATE
1 wire (flat type) (19core)
(CN905)
q; front panel assy
6 two screws
(QT2+3-10)
7 four screws
(QT2+3-10)
5 five screws
(BVTP3
× 10)
9 connector (CN530)
8 two claws
4 two lead with connectors
2 wire (flat type) (17core)
(CN004)
3 wire (flat type) (5core)
(CN503)
1 four screws
(BVTP3 × 10)
2 shield plate (right
)
3 four screws
(BVTP3
× 10)
4 left shield plate

CX-BK7
12
3-6. MAIN BOARD
3-7. REAR COVER
3 two screws
(BVTP3
× 10)
4 screw
(BVTP3
× 10
)
qd two screws
(BVTP3
× 6)
2 wire (flat type)
(11core: EXCEPT AEP, UK) (CN509)
(15core: AEP, UK) (CN508)
1 wire (flat type) (11core)
(CN502)
6 wire (flat type) (11core)
(CN501)
7 connector
(CN007)
q; connector
(CN602)
9 two connectors
(CN007, CN507)
8 connector
(CN006)
qf main board
5
qa
wire (flat type) (27core)
(CN901)
qg PC board
holder (main)
qs wire (flat type) (7core)
(CN904)
1 seven screws
(BVTP3
× 10)
2
4
rear cover
3 connector
(CN303)

CX-BK7
13
3-8. TUNER (FM/AM)
3-9. SP BOARD
1 two screws
(BVTP3
× 8)
2 tuner (FM/AM)
1 two screws
(BVTP3 × 12)
6 seven screws
(BVTP3 × 10
)
5 two connectors
(CN503, CN511)
4 wire (flat type) (15core)
(CN512)
7 SP board
3 lead with connector
2 condenser cover

CX-BK7
14
3-10. ACDC BOARD, POWER TRANSFORMER
3-11. FRONT AMP/SURAMP BOARD
4 two screws
(BVTP3
× 10)
5 five screws
(BVTP3
× 10)
9 four screws
(ITC+4-8)
0 power transformer
8 connector
(CN007)
8 connector
(CN008)
7 connector
(CN014)
3 connector (CN011)
2 connector (CN006)
1 two connectors
(CN003, CN005)
6 ACDC board
3 two screws
(BVTP3 × 10
)
4 two screws
(BVTP3 × 10)
1 two screws
(BVTP3 × 10)
2 CD support board
5 front AMP/SURAMP board

CX-BK7
15
3-12. DVD MECHANISM DECK (CDM69DV-DVBU16V)
3-13. SIGNAL CASSETTE MECHANISM
1 four screws
(BVTP3
× 10
)
2 four screws
(BVTP3
× 10)
3 mechanical cover (disk)
4 four screws
(BVTP3
× 10)
5 mecanical holder (disk)
6 DVD mechanism deck
(CDM69DV-DVBU16V)
1 connector
(CN302)
4 deck board
q; signal cassette
mechanism
8 shield plate (top)
2 screw
(BVTP3
× 10)
3 screw (BVTP3 × 10)
5 five screws (BVTP3 × 10)
6 two screws (BVTP3 × 10)
9 two screws
(BVTP3
× 10)
7 four screws
(BVTP2.6
× 8)

CX-BK7
16
3-15. OPTICAL TRAVERSE UNIT (SERVICE ASSY, DBU-1)
3 boss
4 boss
5 boss
6 optical pick-up section
(DVBU16V)
1 screw
(PTPWHM2.6
)
2
3-14. OPTICAL PICK-UP SECTION (DVBU16V)
holder (DBU1) section
7 flexible board
9 insulator (RB)
8 insulator
q; insulator
6 connector
(CN003)
2 step screw (M)
1 step screw (M)
qa optical traverse unit
(service assy, DBU-1)
5
3 step screw (M)
4 tension spring (DBU1)

CX-BK7
17
3-16. SW (1) BOARD, SW (2) BOARD, SW (3) BOARD, SW (4) BOARD, BRACKET (TOP) ASSY
6 six screws
(BVTP2.6 × 8
)
5 SW (4) board
4 SW (3) board
3 SW (2) board
2 SW (1) board
7 bracket (top) assy
1 four screws
(BTP2.6 × 6)
3-17. RELAY BOARD
3
1 Remove five solders.
– bottom view –
relay board
2 four screws
(BVTP2.6
× 8
)
4 connector
(CN710)
5 connector
(CN703)
6 relay board

CX-BK7
18
3-18. MOTOR (STOCKER) ASSY (STOCKER) (M761)
4
5 stocker motor board
3 two screws
(BVTP2.6 × 8)
2 Remove two solders.
6 motor (stocker) assy
(stocker) (M761)
1 belt (stocker)
1 belt (roller V
)
4 roller motor board
2 Remove two solders.
3 two screws
5 motor (roller) assy
(roller)(M781)
3-19. MOTOR (ROLLER) ASSY (ROLLER) (M781)

CX-BK7
19
3-20. MOTOR (MODE) ASSY (MODE) (M771)
3-21. RUBBER ROLLER (SLIDER) ASSY
1 Remove five solders
of rotary encoder.
2 Remove two solders
of motor (M771)
MODE MOTOR
board
3 two screws
(BVTP2.6
× 8)
4 mode motor board
5 belt (mode V)
6 motor (mode) assy
(mode) (M771)
qg sub chassis
qf screw
(BVTP2.6
× 8)
8 step screw
qs step screw
5 step screw
9 tension spring
(slider 2)
6 tension spring
(base slider 4)
0 rubber roller
(slider 4) assy
7 rubber roller
(slider 1) assy
qa rubber roller
(slider 2) assy
qd rubber roller
(slider 1) assy
3 tension spring
(base slider 5
)
1 step screw
4 rubber roller
(slider 5) assy
2 rubber roller
(slider S) assy

CX-BK7
20
3-22. TIMING BELT (FRONT/REAR)
3-23. CAM (GEAR)
Note: Refer to assembly (Section 4)
2 gear (mode cam)
: Note
1 screw
(PTPWH2.6
× 8)
3 slider (mode cam) assy
5 two gears
(center)
7 two gears (center)
8 timing belt (rear)
9 timing belt (rear)
4 gear
(timing)
6 timing belt
(front)
timing belt
(rear)
When install three timing belts,
its pass under each claws.
timing belt
(rear)
timing belt (front)
claw
claw
claw
claw
qf cam (gear)
: Note
qs gear(mode cam)
0 gear (mode C)
:Note
4 gear (mode 5)
8 gear (mode D)
6 gear (mode 5)
1 screw(PTPWH2.6 × 8)
7 screw (PTPWH2.6 × 8)
9 screw
(PTPWH2.6
× 8)
qa screw
(PTPWH2.6
× 8)
3 screw (PTPWH2.6 × 8)
5 screw (PTPWH2.6 × 8
)
2 pulley
(mode deceleration)
qd screw
Note: Refer to assembly
(Section 4).