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Sony HCD-VX55 User Manual

Sony HCD-VX55
76 pages
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HCD-VX55/VX55J
E Model
HCD-VX55/VX55J
Tourist Model
HCD-VX55J
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
— Continued on next page —
SPECIFICATIONS
HCD-VX55/VX55J are the tuner,
deck, CD and amplifier section in
MHC-VX55/VX55J.
Photo: HCD-VX55
Model Name Using Similar Mechanism NEW
CD CD Mechanism Type CDM58-K2BD37A
Section Base Unit Name BU-K2BD37A
Optical Pick-up Name KSM-213DAP
Tape deck Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type TCM-230PWR11C
A
mplifier section
The following measured at AC 120, 220, 240V
50/60 Hz
DIN power output (rated) 95 + 95 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
125 + 125 watts
(6 ohms at 1 kHz,
10% THD)
Inputs
MD/VIDEO (AUDIO) IN: voltage 450 mV/250 mV,
(phono jacks) impedance 47 kilohms
MIC: sensitivity 1 mV,
(phone jack) impedance 10 kilohms
Outputs
VIDEO OUT: max. output level 1 Vp-p,
(Phono jack) unbalanced, Sync
negative, load impedance
75 ohms
S-VIDEO OUT: Y: 1 Vp-p, unbalanced
(4 pin/mini-DIN jack) Sync negative
C: 0.286 Vp-p
load impedence 75 ohms
PHONES: accepts headphones of 8
(stereo mini jack) ohms or more
FRONT SPEAKER:
accepts impedance of 6 to
16 ohms
VIDEO CD/CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ=780nm)
Emission duration:
continuous
Frequency response 2 Hz – 20 kHz (±0.5 dB)
Wavelength 780 – 790 nm
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
Video color system format
NTSC, PAL
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
Wavelength 660 nm
Output Level –18 dBm
Tape player section
Recording system 4-track 2-channel stereo
Frequency response 40 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassette
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-929-087-15
2003E16-1
© 2003.05
Ver 1.4 2003. 05
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Sony HCD-VX55 Specifications

General IconGeneral
BrandSony
ModelHCD-VX55
CategoryStereo System
LanguageEnglish

Summary

SPECIFICATIONS

VIDEO CD/CD player section

Details specifications for the Video CD and CD playback capabilities.

Tape player section

Lists specifications related to the tape playback functionality.

SAFETY INFORMATION

SAFETY-RELATED COMPONENT WARNING!!

Critical safety warning about replacing specific components with genuine parts.

SAFETY CHECK-OUT

Procedures to follow after repair to ensure safe operation before customer release.

SECTION 1 SERVICE NOTE

Note for installing the panel board

Instructions for attaching the panel board, including screw tightening.

SECTION 2 GENERAL

Front Panel Component Identification

Identifies and labels all buttons and jacks on the front panel of the unit.

SECTION 3 DISASSEMBLY

UPPER CASE (TOP)

Procedure for removing the top cover of the unit.

LOADING PANEL ASSY

Steps for disassembling the disc loading mechanism.

FRONT PANEL SECTION

Details the disassembly steps for the front panel assembly.

BASE UNIT

Instructions for disassembling the CD mechanism base unit.

SECTION 4 TEST MODE

[CD Service Mode]

Mode for running the CD sled motor freely, useful for pickup cleaning.

[GC Test Mode]

Checks software version, displays FL tube, LED, keyboard, and VACS status.

[Tape Aging Mode]

Used for checking the operation of the tape deck section in parallel.

[CD Aging Mode]

Mode for performing automated checks on the CD playback functionality.

SECTION 5 MECHANICAL ADJUSTMENTS

Torque Measurement

Details torque specifications for various tape mechanism modes.

SECTION 6 ELECTRICAL ADJUSTMENTS

DECK SECTION ADJUSTMENTS

Adjustments for tape deck playback and recording circuits.

Tape Speed Adjustment

Steps to adjust the tape speed for correct playback.

FM Tuned Level Adjustment

Procedure for adjusting the FM tuner sensitivity.

CD SECTION S-Curve Check

Checks the symmetry and level of the S-curve waveform for CD playback.

E-F Balance (1 Track jump) Check

Checks the E-F balance for proper CD track jumping.

SECTION 7 DIAGRAMS

7-1. CIRCUIT BOARD LOCATION

Identifies the physical location of all circuit boards within the unit.

BD BOARD WAVEFORMS

Displays various signal waveforms from the BD circuit board.

PANEL BOARD WAVEFORMS

Displays various signal waveforms from the panel circuit board.

MAIN BOARD WAVEFORMS

Displays various signal waveforms from the main circuit board.

VIDEO BOARD WAVEFORMS

Displays various signal waveforms from the video circuit board.

7-2. BLOCK DIAGRAMS

Provides high-level block diagrams of the system's functional sections.

7-4. SCHEMATIC DIAGRAM BD SECTION

Detailed electrical schematic for the BD board.

7-7. SCHEMATIC DIAGRAM MAIN SECTION (2/3)

Electrical schematic for the main board, part 2 of 3.

7-12. SCHEMATIC DIAGRAM PANEL SECTION

Electrical schematic for the panel section, including controls and display.

7-18. SCHEMATIC DIAGRAM VIDEO CD SECTION (1/2)

Electrical schematic for the video CD section, part 1 of 2.

7-21. IC PIN FUNCTION DESCRIPTION

Details the function of each pin for key integrated circuits.

7-23. IC BLOCK DIAGRAMS

Illustrates the internal block structure of major ICs used in the system.

SECTION 8 EXPLODED VIEWS

8-1. MAIN SECTION

Exploded view of the main assembly, showing major chassis components.

8-2. PANEL SECTION

Exploded view detailing the front panel and control assembly parts.

8-6. CD MECHANISM DECK SECTION

Exploded view of the CD mechanism, listing all parts.

SECTION 9 ADDRESS SENSOR BD ELECTRICAL PARTS LIST

BD CD SWITCH DRIVER ELECTRICAL PARTS LIST

Electrical parts list for the BD, CD, Switch, and Driver boards.

MAIN MOTOR PANEL ELECTRICAL PARTS LIST

Electrical parts list for main board, motor, and panel components.

PANEL ELECTRICAL PARTS LIST

Comprehensive electrical parts list for panel components and switches.

REVISION HISTORY

Revision Details

Records changes made to the manual across different versions.

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