Sony HCD-RG444 User Manual

SERVICE MANUAL
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
HCD-RG444
AEP Model
MINI HI-FI COMPONENT SYSTEM
9-877-899-01
2004E1678-1
© 2004.05
• HCD-RG444 is the tuner, deck, CD and
amplifier section in MHC-RG444S.
SPECIFICATIONS
Ver 1.0 2004.05
Amplifier section
Front speaker
DIN power output (rated): 100 + 100 watts (6 ohms at
1kHz, DIN)
Continuous RMS power output (reference):
120 + 120 watts (6 ohms at
1kHz, 10% THD)
Music power output (reference):
240 + 240 watts (6 ohms at
1kHz, 10% THD)
Sub woofer
DIN power output (rated): 100 watts (6 ohms at
60 Hz, DIN)
Continuous RMS power output (reference):
120 watts (6 ohms at
50 Hz, 10% THD)
Music power output (reference):
240 watts (6 ohms at
50 Hz, 10% THD)
Inputs
GAME INPUT AUDIO L/R (phono jacks):
voltage 250 mV,
impedance 47 kilohms
GAME INPUT VIDEO (phono jack):
1Vp-p, 75 ohms
Outputs
PHONES (stereo mini jack):
accepts headphones of
8 ohms or more
VIDEO OUT (phono jack):
max. output level 1Vp-p,
unbalanced, Sync
negative, load impedance
75 ohms
SPEAKER: accepts impedance of 6 to
16 ohms
SUB WOOFER OUT:
accepts impedance of 6 to
16 ohms
CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ=780 nm)
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
Tape deck section
Recording system 4-track 2-channel, stereo
Frequency response 50 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassettes
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
87.5 – 108.0 MHz
(50-kHz step)
Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
531 – 1,602 kHz (with the
tuning interval set at
9kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
Model Name Using Similar Mechanism HCD-RG222
CD
CD Mechanism Type CDM74-F1BD81
Section
Optical Pick-up Name KSM-215DCP/C2NP
Tape deck Model Name Using Similar Mechanism HCD-RG222
Section Tape Transport Mechanism Type CWM43FF-05
– Continued on next page –
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Sony HCD-RG444 Specifications

General

CD Player	Yes
Cassette Deck	Yes
USB Port	No
Remote Control	Yes
Type	Mini Hi-Fi System
Tuner	AM/FM
Speakers	2-Way Bass Reflex Speakers
MP3 Playback	Yes

Summary

Specifications

Amplifier Section

Details the power output ratings for front speakers and subwoofers.

Tuner Section

Provides specifications for the FM and AM tuner frequency ranges.

Tape Deck Section

Lists specifications for the tape recording system and frequency response.

CD Player Section

Details the CD mechanism type, laser specifications, and frequency response.

Notes on Optical Pick-up and Laser Diode

Notes on Handling the Optical Pick-up Block

Cautionary notes regarding electrostatic breakdown and handling the optical pick-up.

Notes on Laser Diode Emission Check

Guidance on observing laser diode emission safely and precautions.

Safety-Related Component Warning

Warning for critical components identified by mark for safe operation.

Servicing Notes and General Information

Section 1 Servicing Note

Provides specific service positions for inspecting AMP and BD81A boards.

Test Modes

Cold Reset

Procedure to clear all data, including preset data, to initial conditions.

Adjustments and Diagrams

Section 5 Mechanical Adjustments

Details mechanical adjustments for the tape mechanism deck section.

Section 6 Electrical Adjustments

Provides electrical adjustments for the deck section and head azimuth.

CD Section Checks

Covers S-curve, RFAC, and RFDC level checks for the CD player.

E-F Balance Adjustment

Section 7 Diagrams

Provides circuit board locations, waveforms, and block diagrams.

7-1. Block Diagrams - Panel Section

Main Section Diagrams

Schematics and PWBs for Main, BD/Driver, and Sub-Woofer sections.

7-2. Printed Wiring Board - BD81A Section

7-3. Schematic Diagram - BD81A Section

7-4. Printed Wiring Board - CD Mechanism Section

7-5. Schematic Diagram - CD Mechanism Section

7-6. Printed Wiring Board - Main Section

7-7. Schematic Diagram - Main Section (1/2)

7-8. Schematic Diagram - Main Section (2/2)

IC Block Diagrams

IC Pin Function Description

Detailed pin functions for IC101 CXD3059AR.

Exploded Views and Parts List

Section 8 Exploded Views

Illustrates the assembly of the main unit's components.

8-1. Main Section

8-2. Front Panel Section

8-4. CD Mechanism Deck Section -1

8-5. CD Mechanism Deck Section -2

Section 9 Electrical Parts List

Comprehensive list of electrical components used in the unit.