DOWNLOAD Sony DAV-C450 / HCD-C450 Service Manual ↓ Size: 18.34 MB | Pages: 102 in PDF or view online for FREE

Model
DAV-C450 HCD-C450
Pages
102
Size
18.34 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
dav-c450-hcd-c450.pdf
Date

Sony DAV-C450 / HCD-C450 Service Manual ▷ View online

HCD-C450
US Model
Canadian Model
E Model
Australian Model
SERVICE MANUAL
COMPACT AV SYSTEM
HCD-C450 is the amplifier, DVD/CD and tuner
section in DAV-C450.
SPECIFICATIONS
Ver 1.7  2007.10
Model Name Using Similar Mechanism
NEW
Mechanism Type
CDM53K-DVBU7
Base Unit Name
DVBU7
Optical Pick-up Name
KHM-240AAA
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
With 3 ohms loads, both channels driven, from 120 – 10,000 Hz; rated
80 watts per channel minimum RMS power, with no more than 10 %
total harmonic distortion from 250 milliwatts to rated output.
Amplifier section
Stereo mode
North American and Mexican models:
80 W + 80 W (3 ohms at 1 kHz, THD 10 %)
Other models:
70 W + 70 W (4 ohms at 1 kHz, THD 10 %)
Surround mode
North American and Mexican models:
Front: 80 W + 80 W
Center*: 80 W
Rear*: 80 W + 80 W (3 ohms at 1 kHz, THD 10 %)
Subwoofer*: 100 W (3 ohms at 100 Hz, THD 10 %)
Other models:
Front: 70 W + 70 W
Center*: 70 W
Rear*: 70 W + 70 W (4 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 (Analog)
AUDIO 1, 2:
Sensitivity: 150 mV
Impedance: 50 kilohms
Inputs (Digital)
AUDIO 2 (optical):
Sensitivity: –
Outputs (Analog)
AUDIO 1 (AUDIO OUT):
Voltage: 2 V
Impedance: 1 kilohms
PHONES:
Accepts low and high-impedance headphones
Super Audio CD/DVD system
Laser
Semiconductor laser
(Super Audio CD/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)
Signal-to-noise ratio
More than 80 dB (AUDIO 1 (AUDIO) connectors only)
Harmonic distortion
Less than 0.03 %
FM tuner section
System
PLL quartz-locked digital synthesizer system
North American model:
87.5 – 108.0 MHz (100 kHz step)
Other models:
87.5 – 108.0 MHz (50 kHz step)
Antenna
FM wire antenna
Antenna terminals
75 ohms, unbalanced
AM tuner section
System
Tuner section:
PLL quartz-locked digital synthesizer system
Tuning range
North American model:
530 – 1,710 kHz (with the interval set at 10 kHz)
531 – 1,710 kHz (with the interval set at 9 kHz)
Middle Eastern, and Philipinne models:
531 – 1,602 kHz (with the interval set at 9 kHz)
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
Loop antenna
Video section
Outputs
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
General
Power requirements
North American model:
120 V AC, 60 Hz
Australian and Asian models:
220 – 240 V AC, 50/60 Hz
Middle Eastern, and Philippine models:
110 – 240 V/ 220 – 240 V AC, 50/60 Hz
Power consumption
120 W (120 V AC), 120 W (230 V AC)
Dimensions (approx.)
355 
×
 100 
×
 394 mm (14 
×
 4 
×
 15 
5
/
8
 inches) (w/h/d) incl. projecting parts
Mass (approx.)
5.5 kg (12 lb 3 oz)
Operating temperature
5˚C to 35˚C (41˚F to 95˚F)
Operating humidity
5 % to 90 %
Design and specifications are subject to change without notice.
Sony Corporation
Audio Business Group
Published by Sony Techno Create Corporation
9-874-002-08
2007J16-1
© 2007.10
2
HCD-C450
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.
C:13:00
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
CHANGE OF OPTICAL PICK-UP
Optical Pick-up has been replaced from KHM-240AAA (TYPE A) to KHM-270AAA (TYPE B) from the middle of production.
In parallel with that, certain parts of DVD board have been changed.
TYPE A/B DISCRIMINATION
PARTS LIST OF EACH MODEL
  DVD BOARD
REF
TYPE A
TYPE B
KHM-240AAA
KHM-270AAA
R076
1-218-969-11 RES-CHIP
22K
5%
1/16W
No Mount
R077
1-218-947-11 RES-CHIP
330
5%
1/16W
1-218-965-11 RES-CHIP
10K
5%
1/16W
R079
1-208-643-11 RES-CHIP
22
5%
1/16W
1-218-977-11 RES-CHIP
100K
5%
1/16W
SERVICING NOTE
SILVER: KHM-240AAA (TYPE A)
BLACK: KHM-270AAA (TYPE B)
optical device
Ver 1.3  2003. 05
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.
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.
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.
Ver 1.6
CHECKING  OF  OPERATIONS  WITH  REMOTE
COMMANDERS  OF  DIFFERENT  MODELS
Some of the signal of remote commander vary between generation
of player.
Between DAV-S400/S500/S800/C450/C700/C900 and DAV-S550/
S880/C770/C900, remote commander signal codes of
“FUNCTION”, “BAND”, “ST/MONO” and “MEMORY” are
different.
Take notice of the above when you check the operation with remote
commanders of different models.
NOTE OF REPLACING THE DVD BOARD
When replacing the DVD board, since the adjustment value is not
set up correctly, “Drive Auto Adjustment” can’t be performed.
In this case, initialize Memory in the following procedures.
Procedure:
1.Starting test mode. (See page 18)
2.Press the [2] key of the remote commander, and set the “DRIVE
MANUAL OPERATION”. (See page 24)
3.Press the [6] key of the remote commander, and set the “6. Memory
Check”. (See page 26)
4.Press the [CLEAR] key of the remote commander, and initialize
Memory.
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
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.
Ver 1.3  2003. 05
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  • Here you can View online or download the Service Manual for the Sony DAV-C450 / HCD-C450 in PDF for free, which will help you to disassemble, recover, fix and repair Sony DAV-C450 / HCD-C450 Audio. Information contained in Sony DAV-C450 / HCD-C450 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.