Sony HCD-DX70 User Manual

Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM58E-30BD60
Base Unit Type BU-30BD60
Optical Pick-up Type A-MAX.3
Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type TCM-230AWR41/MWR41
HCD-DX70
SERVICE MANUAL
HCD-DX70 is the tuner, deck, CD and amplifier
section in MHC-DX70.
SPECIFICATIONS
COMPACT DISC DECK RECEIVER
— Continued on next page —
CD
SECTION
TAPE DECK
SECTION
E Model
Ver 1.0 2001.02
Sony Corporation
Audio Entertainment Group
General Engineering Dept.
9-929-580-11
2001B0900-1
© 2001.2

Sony HCD-DX70 Specifications

General

Type	Mini Hi-Fi System
CD Player	Yes
Bluetooth	No
USB Port	No
Remote Control	Yes
Audio Channels	2.0
Tuner	Yes
Cassette Deck	Yes
Functions	CD Player, Cassette Deck, Tuner

Summary

SPECIFICATIONS

Amplifier section

Specifications for the amplifier section, including rated power output.

CD player section

Specifications for the CD player section, including laser output and frequency response.

Tape player section

Specifications for the tape player section, including recording system and frequency response.

Tuner section

Specifications for the tuner section, including tuning ranges and intermediate frequencies.

SECTION 1 GENERAL

Location of Parts and Controls

Identification and description of front panel parts and controls.

SECTION 2 DISASSEMBLY

2-1. CASE (TOP)

Procedure for disassembling the top case of the unit.

2-3. FRONT PANEL SECTION

Procedure for disassembling the front panel section.

2-7. MAIN BOARD, POWER BOARD

Procedure for disassembling the main and power boards.

2-10. DRIVER BOARD, MOTOR BOARD, CD SENSOR BOARD AND VIDEO BOARD

Procedure for disassembling driver, motor, CD sensor, and video boards.

SECTION 3 TEST MODE

[MC Test Mode]

Mode to check operations of Amplifier, Tuner, and Tape sections.

[CD Service Mode]

Mode to freely operate the CD sled motor for cleaning.

[Aging Mode]

Mode for operation check of CD and tape deck sections.

SECTION 4 MECHANICAL ADJUSTMENTS

Torque Measurement

Measurement procedures and values for various torque settings.

Record/Playback Head Azimuth Adjustment

Procedure for adjusting the azimuth of record/playback heads.

Tape Speed Adjustment DECK B

Procedure for adjusting tape speed on Deck B.

SECTION 5 ELECTRICAL ADJUSTMENTS

FM Tuned Level Adjustment

Procedure for adjusting FM tuned signal level.

S-Curve Check

Procedure for checking the S-curve waveform.

E-F Balance (1 Track jump) Check

Procedure to check E-F balance in 1 track jump mode.

SECTION 6 DIAGRAMS

6-1. CIRCUIT BOARD LOCATION

Diagram showing the location of various circuit boards within the unit.

6-2. BLOCK DIAGRAMS

Block diagrams illustrating signal flow for Tuner/CD and Main sections.

6-3. SCHEMATIC DIAGRAM - BD SECTION

Schematic diagram for the BD board.

6-5. PRINTED WIRING BOARD - MAIN SECTION

Printed wiring board layout for the main section.

6-13. SCHEMATIC DIAGRAM - POWER AMP SECTION

Schematic diagram for the Power Amp section.

6-14. PRINTED WIRING BOARD - PANEL SECTION

Printed wiring board layout for the Panel section.

6-24. IC PIN FUNCTIONS

Pin functions for IC101 (CXD3017Q) on the BD Board.

6-25. IC BLOCK DIAGRAMS

Block diagrams for IC11, IC51, and IC302.

SECTION 7 EXPLODED VIEWS

7-1. MAIN SECTION

Exploded view and parts list for the main section of the unit.

7-4. TAPE MECHANISM DECK SECTION-1 (TCM-230MWR41)

Exploded view and parts list for Tape Mechanism Deck (TCM-230MWR41).

7-6. CD MECHANISM DECK SECTION (CDM58E-30BD60)

Exploded view and parts list for the CD Mechanism Deck (CDM58E-30BD60).

SECTION 8 ELECTRICAL PARTS LIST

BD

Electrical parts list for the BD Board.

MAIN

Electrical parts list for the Main Board.

MAIN MAIN TRANS MOTOR PAD SWITCH PANEL

Parts lists for Main, Main Trans, Motor, Pad Switch, and Panel boards.

MISCELLANEOUS

Miscellaneous parts, accessories, and hardware list.