Sony HCD-DX375 User Manual

SERVICE MANUAL
Sony Corporation
Home Audio Division
Published by Sony Techno Create Corporation
US Model
SUPER AUDIO CD/DVD RECEIVER
9-887-160-02
2006D16-1
© 2006.04
Ver. 1.1 2006.04
HCD-DX375
HCD-DX375 is the amplifier, DVD/CD and tuner
section in DAV-DX375.
SPECIFICATIONS
Model Name Using Similar Mechanism HCD-DX255
Mechanism Type CDM81C-DVBU101
Optical Pick-up Name KHM-310CAB
This system incorporates with Dolby*
1
Digital and Dolby Pro Logic (II)
adaptive matrix surround decoder and the DTS*
2
Digital Surround
System.
*1 Manufactured under license from Dolby Laboratories.
“Dolby,” “Pro Logic,” and the double-D symbol are trademarks of
Dolby Laboratories.
*2 Manufactured under license from Digital Theater Systems, Inc.
“DTS” and “DTS Digital Surround” are trademarks of Digital
Theater Systems, Inc.
— Continued on next page —
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND
TOTAL HARMONIC
DISTORTION
(FTC Output Power): FL/FR/SL/SR/C: 84 W/ch
3 ohm at 170 - 20,000 Hz,
0.7 % THD
SW: 160 W 1.5 ohm at 40 -
170 Hz, 0.7 % THD
Amplifier section
Surround mode (reference) RMS output power, 10 %
THD
Front: 143 W + 143 W
(with SS-TS52)
Center*: 143 W
(with SS-CT51)
Surround*: 143 W + 143
W
(with SS-TS51)
Subwoofer*: 285 W
(with SS-WS52B)
*Depending on the sound field settings and the source,
there may be no sound output.
Inputs
TV, VCR (AUDIO IN) Sensitivity: 450/250 mV
AUDIO IN Sensitivity: 250/125 mV
Outputs (Analog)
Phones Accepts low-and high-
impedance headphones.
Super Audio CD/DVD system
Laser Semiconductor laser
(Super Audio CD/DVD:
λ = 650 nm)
(CD: λ = 790 nm)
Emission duration:
continuous
Signal format system NTSC
Harmonic distortion Less than 0.03 %
Tuner section
System PLL quartz-locked digital
synthesizer system
FM tuner section
Tuning range 87.5 – 108.0 MHz
(100 kHz step)
Antenna (aerial) FM wire antenna (aerial)
Antenna (aerial) terminals 75 ohms, unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range 530 – 1,710 kHz (with the
interval set at 10 kHz)
531 – 1,710 kHz (with the
interval set at 9 kHz)
Antenna (aerial) AM loop antenna (aerial)
Intermediate frequency 450 kHz
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
PB/CB, PR/CR: 0.7 Vp-p
75 ohms
HDMI OUT:
Type A (19 pin)

Sony HCD-DX375 Specifications

General

Type	Mini Hi-Fi Component System
Tuner	FM/AM
CD Player	Yes
USB Port	No
Bluetooth	No
Outputs	Headphone
MP3 Playback	Yes
WMA Playback	No
Audio Inputs	Auxiliary
Speakers	2

Summary

Servicing Notes

Optical Pick-up and Laser Diode Handling

Instructions for handling optical pick-up, checking laser emission, and disc tray lock.

Self-Diagnosis and Version Display

Explains self-diagnosis error codes and version display information for service use.

General Information

Front and Rear Panel Overview

Identifies and describes the controls and connectors on the front and rear panels.

Disassembly Procedures

Disassembly Flowchart

Outlines the step-by-step process for disassembling the unit.

Test Modes

Entering and Operating Test Modes

Explains how to access and utilize various test modes like Cold Reset, Panel Test, and DVD Ship Mode.

Electrical Adjustments

DVD Section Calibration

Details procedures for Mirror Time Adjustment, IOP Measurement, and RF level check.

Diagrams and Schematics

Circuit Board Locations and Diagram Notes

Shows the physical layout of circuit boards and provides general notes for diagrams.

Exploded Views

Overall Unit Assembly Breakdown

Provides an exploded view of the entire unit for part identification and disassembly.

Electrical Parts List

DMB12 Board Component List

Lists electronic components for the DMB12 board, including capacitors, connectors, diodes, ICs, etc.