Sony CX-LDB10 User Manual

SERVICE MANUAL
Sony Corporation
Personal Audio Group
Published by Sony Engineering Corporation
AEP Model
E Model
CX-LDB10/LDB20
Australian Model
CX-LDB10
MICRO HI-FI COMPONENT SYSTEM
9-879-549-01
2005C1678-1
© 2005.03
Ver. 1.0 2005.03
SPECIFICATIONS
CX-LDB10/LDB20
Model Name Using Similar Mechanism HCD-NE5
CD
Base Unit Name BU-K7BD81B
Section
Optical Pick-up Name KSM-213EDP/C2NP
Tape deck Model Name Using Similar Mechanism HCD-NE5
Section Tape Transport Mechanism Type CMAL5Z220A
CX-LDB10/LDB20 are the Amplifier, CD player,
Tape Deck and Tuner section in XR-DB10/DB20.
— Continued on next page —
Amplifier section
CX-LDB20
DIN power output (rated): 35 + 35 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
40 + 40 W
(6 ohms at 1 kHz, 10%
THD)
Music power output (reference):
62 + 62 W
Inputs
AUDIO IN: Sensitivity 700 mV,
impedance 47 kilohms
Outputs
PHONES: Accepts headphones with
an impedance of 8 ohms or
more
SPEAKER: Accepts impedance of 6 to
16 ohms.
CX-LDB10
DIN power output (rated): 20 + 20 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
22.5 + 22.5 W
(6 ohms at 1 kHz, 10%
THD)
Music power output (reference):
38 + 38 W
Inputs
AUDIO IN: Sensitivity 700 mV,
impedance 47 kilohms
Outputs
PHONES: Accepts headphones with
an impedance of 8 ohms or
more
SPEAKER: Accepts impedance of 6 to
16 ohms.
CD player section
Laser Diode Properties Emission duration:
continuous
Laser Output*: Less than
44.6 µW
*This output is the value measurement at a distance of
200 mm from the objective lens surface on the
Optical Pick-up Block with 7 mm aperture)
Frequency response 20 Hz – 20 kHz
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
Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Pan-American model: 530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,710 kHz
(with the tuning interval
set at 9 kHz)
European model: 531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)
Other models: 530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)
Antenna AM loop antenna, external
antenna terminal
Intermediate frequency 450 kHz
Photo : CX-LDB20

Sony CX-LDB10 Specifications

General

Brand	Sony
Model	CX-LDB10
Category	Stereo System
Language	English

Summary

Servicing Notes

Optical Pick-up Handling

Notes on handling optical pick-up blocks to prevent electrostatic discharge.

Laser Diode Emission Check

Guidelines for checking laser diode emission safety and procedure.

Model Identification

Identifies model variations and their corresponding power voltage indications.

General Information

Button Locations and Reference Pages

Provides button locations and corresponding reference page numbers for the main unit.

Disassembly Procedures

Disassembly Flow

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

Rear Cabinet Removal

Details the procedure for removing the rear cabinet of the unit.

Top and Front Panel Assembly Removal

Details the procedure for removing the top and front panel assemblies.

Base Unit Removal

Details the procedure for removing the base unit (BU-K7BD81B).

Mechanical Deck Removal

Details the procedure for removing the mechanical deck (CMAL5Z220A).

Control Board Removal

Details the procedure for removing the control board.

Main Board and Power Transformer Removal

Details the procedure for removing the main board and power transformer.

Cassette Lid Removal

Details the procedure for removing the cassette lid.

Test Mode Operations

Cold Reset Procedure

Resets the unit to factory defaults, clearing all preset data.

Tuner Step Change

Allows changing the AM channel step between 9 kHz and 10 kHz.

Ship Reset Procedure

Resets the unit to its shipping state, activating the CD function.

Panel Test Mode Functions

Checks software version, LCD, LED, and keyboard functions.

Mechanical Adjustments

Tape Mechanism Precautions and Procedures

Precautions and procedures for tape mechanism deck adjustments.

Tape Drive Torque Measurement

Details torque measurement specifications for tape drive mechanisms.

Electrical Adjustments

Tape Deck Electrical Precautions

Electrical adjustment precautions for the tape deck section.

Head Azimuth Adjustment Procedure

Procedure for adjusting the record/playback head azimuth for optimal audio quality.

Diagrams and Waveforms

Block Diagrams (CD & Main)

Block diagrams illustrating the CD and Main sections of the system.

CD Board Diagrams (PWB & Schematic)

Printed wiring board and schematic for the CD board.

Main Section Diagrams (PWB & Schematic)

Printed wiring boards and schematic diagrams for the Main section.

Control Section Diagrams (PWB & Schematic)

Printed wiring boards and schematics for the Control section.

Power Section Diagrams (PWB & Schematic)

Printed wiring boards and schematics for the Power section.

Auxiliary/Headphone Diagrams

Printed wiring boards and schematics for Aux/Headphone sections.

Waveforms & IC Block Diagrams

Waveforms and IC block diagrams for various system components.

Exploded Views

Overall Unit Exploded View

Exploded view of the entire unit, showing major assemblies and parts.

Front Panel Exploded View

Exploded view detailing parts of the front panel assembly.

Chassis Exploded View

Exploded view detailing parts within the chassis section.

Top Panel Exploded View

Exploded view detailing parts of the top panel assembly.

Electrical Parts List

Capacitors

List of capacitors with part numbers and specifications.

Diodes

List of diodes with part numbers and specifications.

Ferrite Beads

List of ferrite beads with part numbers.

Jacks

List of jacks with part numbers.

Resistors

List of resistors with part numbers and specifications.