Aiwa CX-VX5 User manual

1
Ver 1.0 2004. 03
DVD Model Name Using Similar Mechanism NEW
Section DVD Mechanism Type CDM80-DVBU24
Optical Pick-up Name DBU-1
SERVICE MANUAL
AEP Model
UK Model
CX-VX5
Amplifier section
Stereo mode 60 W + 60 W (5 ohms at
1 kHz, THD 10 %)
Surround mode Front: 60 W + 60 W
Center*: 60 W
Surround*: 60 W + 60 W
(5 ohms at 1 kHz, THD
10 %)
Subwoofer*: 100 W
(3 ohms at 100 Hz, THD
10 %)
* Depending on the sound field settings and the source,
there may be no sound output.
Inputs VIDEO 1:
Sensitivity: 300 mV
Impedance: 50 kilohms
VIDEO 2:
Sensitivity: 300 mV
Impedance: 50 kilohms
MIC 1/MIC 2:
Sensitivity: 1 mV
Impedance: 10 kilohms
Outputs VIDEO 1 (AUDIO
OUT):
Voltage: 1 V
Impedance: 1 kilohm
Phones Accepts low-and high-
impedance headphones.
SPECIFICATIONS
DVD system
Laser Semiconductor laser
(DVD: λ=650 nm)
(CD: λ=780 nm)
Emission duration:
continuous
Signal format system NTSC or NTSC/PAL
Frequency response (at 2 CH STEREO mode)
DVD (PCM): 2 Hz to 22
kHz (±1.0 dB)
CD: 2 Hz to 20 kHz (±1.0
dB)
Harmonic distortion Less than 0.03 %
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-877-635-01
2004C04-1
© 2004. 03
– Continued on next page –
DVD RECEIVER
• CX-VX5 are DVD receiver
in AVJ-X5.

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CX-VX5
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 PUBLISHED BY SONY.
Tuner section
System PLL quartz-locked digital
synthesizer system
FM tuner section
Tuning range 87.5 – 108.0 MHz (50 kHz
step)
Antenna FM wire antenna
Antenna terminals 75 ohms, unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range 531 – 1,602 kHz (with the
interval set at 9 kHz)
Antenna AM loop antenna
Intermediate frequency 450 kHz
Video section (VIDEO 1, 2, EURO AV)
Inputs Video: 1 Vp-p 75 ohms
Outputs Video: 1 Vp-p 75 ohms
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 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.
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 ironsusing a temperature regulator shouldbe set toabout
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.

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CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
CX-VX5
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown 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.
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
label is located on the
left side of the unit as
viewed from the front.

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TABLE OF CONTENTS
CX-VX5
1. SERVICE POSITIONS
1-1. DVD Mechanism Block ......................................................5
1-2. MICON Board..................................................................... 5
2. GENERAL
Front Panel............................................................................... 6
Front Panel Display ................................................................. 7
Rear Panel................................................................................ 9
Remote................................................................................... 10
Language Code List............................................................... 11
DVD Setup Menu List ........................................................... 12
3. DISASSEMBLY
3-1. Top Cover .......................................................................... 14
3-2. Front Panel Assy ............................................................... 15
3-3. FL Board ........................................................................... 16
3-4. P-KEY Board, RM Board ................................................. 16
3-5. F-AV Board ....................................................................... 17
3-6. Rear Panel Section ............................................................ 17
3-7. MICON Board................................................................... 18
3-8. Mechanism Deck............................................................... 18
3-9. DMB03 Board ................................................................... 19
3-10. AMP Board ....................................................................... 19
3-11. POWER Board .................................................................. 20
3-12. Chassis (Top)..................................................................... 20
3-13. Lever (Loading-R/L) .........................................................21
3-14. Lever (Disc Stop), Disc Sensor Lever............................... 22
3-15. DRIVER Board ................................................................. 22
3-16. RF Board ........................................................................... 23
3-17. Optical Pick-up ................................................................. 23
3-18. Base Unit ........................................................................... 24
3-19. Lever (BU Lock) ............................................................... 24
3-20. Close Lever ....................................................................... 25
3-21. Lever (DIR), Gear (IDL-B) ............................................... 25
3-22. Gear (IDL-C)..................................................................... 26
4. TEST MODE ..................................................................... 27
5. ELECTRICAL ADJUSTMENT.................................... 35
6. DIAGRAMS
6-1. Circuit Boards Location .................................................... 36
6-2. Printed Wiring Board
–DVD Mechanism Section (1/2)– ..................................... 39
6-3. Schematic Diagram –DVD Mechanism Section (1/2)– .... 40
6-4. Printed Wiring Board
–DVD Mechanism Section (2/2)– ..................................... 41
6-5. Schematic Diagram –DVD Mechanism Section (2/2)– .... 41
6-6. Printed Wiring Board –DMB03 Section (1/2)– ................ 42
6-7. Printed Wiring Board –DMB03 Section (2/2)– ................ 43
6-8. Schematic Diagram –DMB03 Section (1/8)– ................... 44
6-9. Schematic Diagram –DMB03 Section (2/8)– ................... 45
6-10. Schematic Diagram –DMB03 Section (3/8)– ................... 46
6-11. Schematic Diagram –DMB03 Section (4/8)– ................... 47
6-12. Schematic Diagram –DMB03 Section (5/8)– ................... 48
6-13. Schematic Diagram –DMB03 Section (6/8)– ................... 49
6-14. Schematic Diagram –DMB03 Section (7/8)– ................... 50
6-15. Schematic Diagram –DMB03 Section (8/8)– ................... 51
6-16. Printed Wiring Boards –I/O Section (1/2)–....................... 52
6-17. Printed Wiring Boards –I/O Section (2/2)–....................... 53
6-18. Schematic Diagram –I/O Section (1/2)– ........................... 54
6-19. Schematic Diagram –I/O Section (2/2)– ........................... 55
6-20. Printed Wiring Board –F-AV Section–.............................. 56
6-21. Schematic Diagram –F-AV Section– ................................ 57
6-22. Printed Wiring Board –Micon Section– ............................ 58
6-23. Schematic Diagram –Micon Section–............................... 59
6-24. Printed Wiring Boards –Key Section– .............................. 60
6-25. Schematic Diagram –Key Section–................................... 61
6-26. Printed Wiring Board –FL Section–.................................. 62
6-27. Schematic Diagram –FL Section– .................................... 63
6-28. Printed Wiring Board –AMP Section (1/2)– ..................... 64
6-29. Printed Wiring Board –AMP Section (2/2)– ..................... 65
6-30. Schematic Diagram –AMP Section (1/2)–........................ 66
6-31. Schematic Diagram –AMP Section (2/2)–........................ 67
6-32. Printed Wiring Board –Power Section (1/2)– ................... 68
6-33. Printed Wiring Board –Power Section (2/2)– ................... 69
6-34. Schematic Diagram –Power Section– ............................... 70
7. EXPLODED VIEWS
7-1. Main Section ..................................................................... 71
7-2. Front Panel Section ........................................................... 72
7-3. Rear Panel Section ............................................................ 73
7-4. Chassis Section-1 .............................................................. 74
7-5. Chassis Section-2 .............................................................. 75
7-6. DVD Mechanism Deck Section-1..................................... 76
7-7. DVD Mechanism Deck Section-2..................................... 77
7-8. DVD Mechanism Deck Section-3..................................... 78
7-9. Base Unit Section .............................................................. 79
8. ELECTRICAL PARTS LIST ........................................ 80

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CX-VX5
SECTION 1
SERVICE POSITIONS
1-1. DVD MECHANISM BLOCK
1-2. MICON BOARD

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CX-VX5 SECTION 2
GENERAL This section is extracted
from instruction manual.

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CX-VX5

8
CX-VX5

9
CX-VX5

10
CX-VX5

11
CX-VX5

12
CX-VX5

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CX-VX5
SECTION 3
DISASSEMBLY
Note : Disassemble the unit in the order as shown below.
3-1. TOP COVER
(Page 14)
3-4. P-KEY BOARD,
RM BOARD
(Page 16)
SET
3-2. FRONT PANEL ASSY
(Page 15)
3-3. FL BOARD
(Page 16)
3-5. F-AV BOARD
(Page 17)
3-6. REAR PANEL SECTION
(Page 17)
3-11. POWER BOARD
(Page 20)
3-8. MECHANISM DECK
(Page 18)
3-12. CHASSIS (TOP)
(Page 20) 3-15. DRIVER BOARD (Page 22) 3-18. BASE UNIT (Page 24)
3-14. LEVER (DISC STOP),
DISC SENSOR LEVER
(Page 22)
3-16. RF BOARD
(Page 23)
3-10. AMP BOARD
(Page 19)
3-7. MICON BOARD
(Page 18)
3-9. DMB03 BOARD
(Page 19)
3-17. OPTICAL PICK-UP
(Page 23)
3-19. LEVER (BU LOCK)
(Page 24)
3-20. CLOSE LEVER
(Page 25)
3-21. LEVER (DIR),
GEAR (IDL-B)
(Page 25)
3-22. GEAR (IDL-C)
(Page 26)
3-13. LEVER (LOADING-R/L)
(Page 21)

14
CX-VX5
Note : Follow the disassembly procedure in the numerical order given.
3-1. TOP COVER
3 five screws
(+BTP 3
x 6)
4 top cover
1 two screws
(+BTP 3
x 6)
2 two screws
(+BTP 3
x 6)

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CX-VX5
3-2. FRONT PANEL ASSY
1 two screws
(+P 3
x 8)
2 screw
(+BVTP 3
x 6)
4 CN104
5 CN106
6 CN101
9 CN108
0 I/O board
qa CN400
8 CN105
7 CN107
3
qj screw
(+KTP 3
x 6)
w; screw
(+BVTP 3
x 6)
wa lug
qh screw
(+KTP 3
x 6)
qs CN503
ql front panel assy
qk two claws
qg lug
qd CN50
2
qf CN501

16
CX-VX5
3-3. FL BOARD
3-4. P-KEY BOARD, RM BOARD
1 two screws
(+P 2.6
x 6)
2 sub chassis
claw
claw
3 two screws
(+P 2.6
x 6)
4 FL board
1 two screws
(+P 2.6
x 6)
5 screw
(+P 2.6
x 6
)
2 P-KEY board
6 RM board
4 CN801
3 CN804

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CX-VX5
3-5. F-AV BOARD
3-6. REAR PANEL SECTION
2 two screws
(+P 2.6 x 6)
3 two screws
(+P 2.6 x 6)
5 F-AV board
4 connector bracket
1 two screws
(+KTP 2.6 x 6)
3 screw
(+P 3 x 8
)
4 screw
(+P 3 x 8)
6 screw
(+P 3 x 8)
7 rear panel section
5 two screws
(+P 3 x 8)
1 CN901
2 CN501

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CX-VX5
3-8. MECHANISM DECK
3-7. MICON BOARD
6 two screw
s
(+P 3 x 8)
7 two screws
(+P 3 x 8)
1 CN505
8 MICON board
9 CN102
2 CN510
3 CN508
5 CN506
4 CN509
2 two screws
(+BVTP 3
x 6)
3 two screws
(+BVTP 3
x 6)
5 CN501
6 CN701
7 two screws
(+P 3
x 10)
9 mechanism holde
r
0 mechanism deck
8 two screws
(+P 3
x 10)
4
1
CN906

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CX-VX5
3-9. DMB03 BOARD
3-10. AMP BOARD
4 two screws
(+BVTP 3
x 6)
6 heat sin
k
7 DMB03 board
1 CN105
2 CN106
3 CN107
5 two screws
(+BVTP 3
x 6)
4 two screws
(+BVTP 3
x 6)
5 two screws
(+BVTP 3
x 6)
6 AMP boar
d
3 screw
(+BVTP 3
x 6)
1 CN905
2 CN902

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CX-VX5
3-12. CHASSIS (TOP)
3-11. POWER BOARD
1 two screws
(+BVTP 3 x 6)
4 three screws
(+BVTP 3 x 6)
5 POWER board
3 screw
(+BVTP 3 x 6)
2 sheet (barrier)
1 screw
(+BVTP 2.6
× 8)
4 three screws
(+BVTP 2.6
× 8)
3 two screws
(+P 2
× 10)
5 chassis (top)
2 lever (CL UP2
)