DAV-C450 (serv.man2) — Sony Audio Service Manual (repair manual)

Model
DAV-C450 (serv.man2)
Pages
103
Size
19.01 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / BRAZIL
File
dav-c450-sm2.pdf
Date

View Sony DAV-C450 (serv.man2) Service Manual online

Brazilian Model
MANUAL DE SERVIÇO
COMPACT AV SYSTEM
Modelo que usa mecanismo similar           Novo
Tipo do Mecanismo                                              CDM53K-DVBU7
Base da Unidade                                         DVBU7
Nome da Unidade Óptica                            KHM-240AAA
DAV-C450
Especificações Técnicas 
Amplificador 
Modo estéreo 
70 W + 70 W (4 ohms a 1 kHz, THD 10 %) 
Modo  surround 
Frontal: 70 W + 70 W 
Central*: 70 W 
Traseiro*: 70 W + 70 W (4 ohms a 1 kHz, THD 10 %) 
Subwoofer*: 100 W (3 ohms a 100 Hz, THD 10 %) 
*  Dependendo dos ajustes do campo sonoro e da fonte, pode não haver nenhum som. 
Entradas (Analógicas) 
AUDIO 1, 2: 
Sensibilidade: 150 mV 
Impedância: 50 kilohms 
Entradas (Digitais) 
AUDIO 2 (óptica): 
Sensibilidade: – 
Saídas (Analógicas) 
AUDIO 1 (AUDIO OUT): 
Voltagem: 2 V 
Impedância: 1 kilohms 
PHONES: 
Aceita fones de ouvido de baixa e alta impedância 
Sistema Super Audio CD/DVD 
Laser
Laser semicondutor 
(Super Audio CD/DVD: 
λ
 = 650 nm) 
(CD: 
λ
 = 780 nm) 
Duração de emissão: contínua 
Sistema de formato de sinal 
NTSC ou NTSC/PAL 
Resposta de freqüência (no modo 2 CH STEREO) 
DVD (PCM): 2 Hz a 22 kHz (±1,0 dB) 
CD: 2 Hz a 20 kHz (±1,0 dB) 
Relação sinal/ruído 
Mais de 80 dB (somente no conector AUDIO 1 (AUDIO)) 
Distorção harmônica 
Menor que 0,03 % 
Sintonizador FM 
Sistema 
Sistema sintetizador digital a quartzo PLL 
87,5 – 108,0 MHz (intervalos de 50 kHz) 
Antena 
Antena monofilar de FM 
Terminais de antena 
75 ohms, não balanceado 
Sintonizador AM 
Sistema
Sintonizador: 
Sistema sintetizador digital a quartzo PLL 
Faixa de sintonia 
531 – 1.602 kHz (com intervalo de 9 kHz) 
530 – 1.710 kHz (com intervalo de 10 kHz) 
Antena 
Antena loop de AM 
Vídeo 
Saídas VIDEO: 1 Vp-p 75 ohms 
S-VIDEO:  Y: 1 Vp-p 75 ohms 
C: 0.286 Vp-p 75 ohms 
COMPONENT: Y: 1 Vp-p 75 ohms 
P
B
/C
B
, P
R
/C
R
: 0.7 Vp-p 75 ohms 
Caixas acústicas 
Caixas acústicas frontais/central/traseira
Sistema de alto-falante 
Tipo bass reflex
Unidade do alto-falante Diâmetro 80 mm (3 
1
/
4
 pol) tipo cone
Impedância 4 ohms
Dimensões (aprox.) 111 
×
 116 
×
 111 mm (LxAxP)
Peso (aprox.) 0,62 kg (1 lb 6 oz)
Subwoofer 
Sistema de alto-falante 
Bass reflex
Unidade do alto-falante Diâmetro 200 mm (7 
7
/
8
 pol) tipo cone
Impedância 
3 ohms
Dimensões (aprox.) 172,5 
×
 355 
×
 355 mm (L x A x P)
Peso (aprox.) 
5,3 kg (11 lb 11 oz)
Geral 
Alimentação 
110 – 240 V CA, 50/60 Hz
Consumo 
120 W (120 V CA)
Dimensões (aprox.) 355 
×
 100 
×
 394 mm(L x A x P) 
incluindo partes salientes 
Peso (aprox.) 
5,5 kg (12 lb 3 oz) 
Temperatura de operação 
5˚C a 35˚C (41˚F a 95˚F) 
Umidade de operação 
5 % a 90 % 
Projetos e especificações sujeitos a alteração sem prévio aviso. 
Versão 1.2  10 2003
Clique aqui
9-890-238-01
2
HCD-C450
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.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output several times.
SELF-DIAGNOSIS
Self-diagnosis Function
(When letters/numbers appear in the
display)
The self-diagnosis function is activated to
prevent the system from malfunctioning. In
this case a five-character service number
(e.g., C 13 00) with a combination of a letter
and digits appears on the screen and the
front panel display. Refer to the following
table.
First three
characters of
the service
number
C 13
C 31
E XX
(xx is a number)
Cause and/or Corrective
Action
The disc is dirty.
, Clean the disc with a soft
cloth.
The disc is not inserted
correctly.
, Re-insert the disc
correctly.
To prevent a malfunction, the
system has performed the self-
diagnosis function.
, Contact your nearest Sony
dealer or local authorized
Sony service facility and
give the 5-character
service number.
Example: E 61 10
C:13:00
3
HCD-C450
SAFETY  CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
LEAKAGE
The AC leakage from any exposed metal part to earth Ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers).
Leakage current can be measured by any one of three methods.
1.
A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2.
A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3.
Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples of
a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in 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.
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 CLASS 1 LASER
PRODUCT MARKING is
 located on the rear exterior.
This caution
label is located
inside the unit.
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 
0
 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
To Exposed Metal 
Parts on Set
0.15 
µ
F
1.5 k
AC
Voltmeter
(0.75 V)
Earth Ground
Fig. A.  Using an AC voltmeter to check AC leakage.
4
HCD-C450
TABLE OF CONTENTS
1. GENERAL
·········································································· 5
2. DISASSEMBLY
································································ 7
2-1. Case (Top) ····································································· 7
2-2. Tuner Unit ····································································· 8
2-3. Front Panel Section ······················································· 8
2-4. POWER Board ······························································ 9
2-5. Mechanism Deck (CDM53K-DVBU7) ························· 9
2-6. RF-240 Board ······························································ 10
2-7. Fitting Base (Magnet) Assembly ································· 10
2-8. DVD Base Unit (DVBU7) ··········································· 11
2-9. Optical Pick-up (KHM-240AAA) ······························· 11
2-10. CLAMP MOTOR Board,
Motor (Clamp) Assembly ············································ 12
2-11. Fitting Base (Guide) Assembly,
Bracket (Chassis) ························································· 12
2-12. Tray (240) ···································································· 13
2-13. Chassis (Mold B) Section ············································ 13
2-14. LOAD MOTOR Board,
Motor (Loading) Assembly (M702) ···························· 14
2-15. Stocker Section ···························································· 14
2-16. Slider (Selection), Tension Spring (Shutter),
Slider (Shutter) ···························································· 15
2-17. Gear (Gear A), Gear (Gear B), Gear (U/D Slider) ······ 16
2-18. Gear (Chucking) ·························································· 17
3. TEST MODE
···································································· 18
4. ELECTRICAL ADJUSTMENT
·································· 28
5. DIAGRAMS
······································································ 30
5-1. Block Diagrams ··························································· 32
5-2. Printed Wiring Board  – RF Board – ··························· 35
5-3. Schematic Diagram  – RF Board – ······························ 36
5-4. Printed Wiring Board  – DVD Board (Side A) – ········· 37
5-5. Printed Wiring Board  – DVD Board (Side B) – ········· 38
5-6. Schematic Diagram  – DVD Board (1/9) – ················· 39
5-7. Schematic Diagram  – DVD Board (2/9) – ················· 40
5-8. Schematic Diagram  – DVD Board (3/9) – ················· 41
5-9. Schematic Diagram  – DVD Board (4/9) – ················· 42
5-10. Schematic Diagram  – DVD Board (5/9) – ················· 43
5-11. Schematic Diagram  – DVD Board (6/9) – ················· 44
5-12. Schematic Diagram  – DVD Board (7/9) – ················· 45
5-13. Schematic Diagram  – DVD Board (8/9) – ················· 46
5-14. Schematic Diagram  – DVD Board (9/9) – ················· 47
5-15. Printed Wiring Board  – AMP Board (Side A) – ········· 48
5-16. Printed Wiring Board  – AMP Board (Side B) – ········· 49
5-17. Schematic Diagram  – AMP Board (1/2) – ················· 50
5-18. Schematic Diagram  – AMP Board (2/2) – ················· 51
5-19. Printed Wiring Board  – I/O Section – ························ 52
5-20. Schematic Diagram  – I/O Section (1/2) – ·················· 53
5-21. Schematic Diagram  – I/O Section (2/2) – ·················· 54
5-22. Printed Wiring Board  – FRONT Section – ················· 55
5-23. Schematic Diagram  – FRONT Section – ··················· 56
5-24. Printed Wiring Board  – SW Section – ························ 57
5-25. Schematic Diagram  – SW Section – ·························· 58
5-26. Printed Wiring Board  – CDM Section – ···················· 59
5-27. Schematic Diagram  – CDM Section – ······················· 60
5-28. Printed Wiring Board  – POWER Board – ·················· 61
5-29. Schematic Diagram  – POWER Board – ····················· 62
5-30. IC Block Diagrams ······················································ 63
5-31. IC Pin Function Descriptions ······································ 66
6. EXPLODED VIEWS
······················································ 76
6-1. Case (Top) Section ······················································ 76
6-2. Chassis Section ···························································· 77
6-3. Front Panel Section ····················································· 78
6-4. Overall Section (CDM53K-DVBU7) ·························· 79
6-5. Chassis (Mold) Assembly Section
(CDM53K-DVBU7) ···················································· 80
6-6. Chassis Section (CDM53K-DVBU7) ·························· 81
6-7. Stocker (240) Overall Section,
Optical Pick-up Section (DVBU7) ······························ 82
7. ELECTRICAL PARTS LIST
······································· 83
Page of 103
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Download Sony DAV-C450 (serv.man2) Service Manual (Repair Manual)

Here you can view online or download Sony DAV-C450 (serv.man2) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony DAV-C450 (serv.man2) Audio. Information contained in Sony DAV-C450 (serv.man2) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).