Sony CFD-V27 Service Manual

CFD-V27
E Model SERVICE MANUAL
CD RADIO CASSETTE-CORDER
MICROFILM
SPECIFICATIONS
Model Name Using Similar Mechanism CFD-V17
CD
CD Mechanism Type KSM-213CDM
Section
Optical Pick-up Name KSS-213CDM
Tape deck Model Name Using Similar Mechanism CFD-V17
Section Tape Transport Mechanism Type MF-V10-117
CD player section
System Compact disc digital audio system
Laser diode properties Material: GaAlAs
Wavelength:780 nm
Emission duration : Continuous
Laser output : Less than 44.6 µW
(This output is the value measured at a
distance of about 200 mm from the objective
lens surface on the optical pick-up block
with 7 mm aperture.)
Spindle speed 200 r/min (rpm) to 500 r/min (rpm) (CLV)
Number of channels 2
Frequency response 20 – 20,000 Hz + 1/-2 dB
Wow and flutter Below measurable limit
Radio section
Frequency range FM : 87.6 – 108 MHz
AM : 530 –1,710 kHz
Aerials FM : Telescopic antenna
AM : Built-in ferrite bar aerial
Cassette-corder section
Recording system 4 -track 2 channel stereo
Fast winding time Approx. 120 s (sec.) with Sony cassette C-60
Frequency response TYPE I (normal) : 70 – 10,000 Hz
General
Speakers Full range : 10 cm dia., 3.2 Ω, cone type (2)
Outputs Headphones jack (stereo minijack)
For 16 – 68 Ω impedance headphones
Power output 2.3 W + 2.3 W (at 3.2 Ω, 10 % harmonic
distortion)
Power requirements For CD radio cassette-corder :
120V AC, 60 Hz
9V DC, 6 size D (R 20) batteries
Power consumption AC 20W
Battery life For CD radio cassette-corder:
FM recording
Sony R20P : approx. 13.5 h
Sony alkaline LR20 : approx. 20 h
Tape playback
Sony R20P : approx. 7.5 h
Sony alkaline LR20 : approx. 15 h
CD playback
Sony R20P : approx. 2.5 h
Sony alkaline LR20 : approx. 7 h
Dimensions Approx. 420 × 165 × 256 mm (w/h/d)
(16
5
/8 × 6
1
/2 × 10
1
/8 inches) (incl. projecting
parts)
Mass Approx. 4.1 kg (9 lb. 1 oz) (incl. batteries)
Supplied accessories AC power cord (1)
Design and specifications are subject to change without notice.
Ver 1.1 2000. 08
With SUPPLEMENT-1 (9-926-997-81)

Sony CFD-V27 Specifications

General

Type	Portable CD Player
CD Playback	Yes
Cassette Playback	Yes
Radio Tuner	AM/FM
Signal-to-Noise Ratio	80 dB
Weight	4.6 lbs
Media Type	CD, Cassette
Playback Formats	CD, CD-R, CD-RW
Power Source	AC adapter or batteries
Power Requirements	AC 120V, 60Hz

Summary

Specifications

CD Player Section Specifications

Details about the CD playback features including system, laser properties, speed, channels, and frequency response.

Radio Section Specifications

Technical details for FM and AM radio reception, including frequency range and aerials.

Cassette-Corder Section Specifications

Specifications for tape recording and playback, covering system, fast winding time, and frequency response.

Power Requirements and Battery Life

Information on power sources, consumption, and expected battery life for various operations.

Dimensions and Mass

Physical size and weight specifications of the unit.

Supplied Accessories

List of items included with the product.

Service Notes

Handling the Optical Pick-Up Block

Precautions for handling the optical pick-up block to prevent electrostatic damage.

Laser Diode Emission Check

Procedure for checking laser diode emission, emphasizing safe observation distance.

Chuck Plate Jig on Repairing

Information on using a specific jig for CD section repair when the lid is open.

Laser Diode and Focus Search Operation Check

Steps to check laser diode emission and focus search operation for the CD player.

General

Location and Function of Controls

Identifies and describes the location and function of all controls on the main unit.

Disassembly

Front Cabinet Assy

Detailed steps for removing the front cabinet assembly.

Control Board

Procedure for accessing and removing the control board.

Cabinet (upper) Assy

Steps for removing the upper cabinet assembly.

Inlet, Power, Battery, Half Battery Board

Procedure for removing the inlet, power, and battery-related boards.

Main Board

Steps for accessing and removing the main board.

Mechanism Deck, Optical Pick-up Section

Procedure for removing the mechanism deck and optical pick-up section.

Dial Pointer Installation

Dial Pointer Installation Procedure

Steps for aligning and installing the dial pointer correctly.

Adjustment

Mechanical Adjustment

Procedures for performing mechanical adjustments on the unit.

Electrical Adjustment

Procedures for performing electrical adjustments.

Tuner Section Adjustment

Specific adjustment procedures for the tuner section.

FM VCO Adjustment

Procedure for adjusting the FM voltage-controlled oscillator.

Diagrams

Circuit Board Location

Visual guide showing the location of all circuit boards within the unit.

Block Diagram

High-level overview of the system's functional blocks and signal paths.

Printed Wiring Board

Diagrams illustrating the printed wiring board layouts for various sections.

Schematic Diagram - Main Section (1/2)

Detailed circuit diagram for the main section of the unit (Tuner/Audio).

Schematic Diagram - Main Section (2/2)

Detailed circuit diagram for the main section of the unit (CD mechanism).

IC Pin Function Description

Detailed description of the function for each pin of key integrated circuits.

IC Block Diagrams (Main Section)

Block diagrams illustrating the internal functions of main section ICs.

IC Block Diagrams (CD Section)

Block diagrams illustrating the internal functions of CD section ICs.

IC703 BA6898FP Block Diagram

Block diagram detailing the functions of the BA6898FP integrated circuit.

Exploded Views

Front Cabinet Section Exploded View

Exploded view detailing the parts of the front cabinet section.

Rear Cabinet Section Exploded View

Exploded view detailing the parts of the rear cabinet section.

Upper Cabinet Section Exploded View

Exploded view detailing the parts of the upper cabinet section.

Mechanism Deck Section (1) Exploded View

Exploded view detailing the parts of the mechanism deck section.

Mechanism Deck Section (2) Exploded View

Exploded view detailing the parts of the mechanism deck section.

Optical Pick-up Section Exploded View

Exploded view detailing the parts of the optical pick-up section.

Electrical Parts List

CD Motor Board Parts

List of electrical parts for the CD motor board.

Connector Board Parts

List of electrical parts for the connector board.

Control Board Parts

List of electrical parts for the control board.

Display Board Parts

List of electrical parts for the display board.

Inlet Board Parts

List of electrical parts for the inlet board.

Half Battery Board Parts

List of electrical parts for the half battery board.

Battery Board Parts

List of electrical parts for the battery board.

Power Board Parts

List of electrical parts for the power board.

Record Switch Board Parts

List of electrical parts for the record switch board.

CD Operations and Checks

CD Section Notes on Check

General notes and procedures for checking the CD section's functionality.

CD Section Before Check

Preparation steps and checks to perform before detailed CD section testing.

CD Section Sled Motor Check

Procedure to check the smooth operation of the CD sled motor.

CD Section Focus Search Check

Procedure to verify the focus search operation of the optical pick-up.

How to Enter CD Test Mode

Steps required to put the set into CD test mode for diagnostics.

How to Exit CD Test Mode

Procedure to safely exit the CD test mode.

TRAVERSE Check

Traverse Check Procedure

Steps for performing the traverse check, typically after replacing the optical pick-up block.

Focus Bias Check

Focus Bias Check Procedure

Procedure for checking focus bias, particularly after optical block replacement.

Focus/Tracking Gain Check

Focus/Tracking Gain Check Procedure

Procedure for checking focus and tracking gain to ensure proper pick-up follow-up.