Sony CDP-EX77 - User Manual

MICROFILM
CDP-EX77
COMPACT DISC PLAYER
SERVICE MANUAL
AEP Model
UK Model
E Model
CDP-EX77 is the CD player section
in MHC-EX66, DHC-EX77MD/MD77
Model Name Using Similar Mechanism HCD-MD5
CD Mechanism Type CDM38A-5BD19
Base Unit Name BU-5BD19
Optical Pick-up Name KSS-213B/K-N
SPECIFICATIONS
System Compact disc and digital audio system
Laser Semiconductor laser (λ = 780 nm)
Emission duration: continuous
Laser output Max. 44.6 µW*
* This output is the value measured at a distance of
200 mm from the objective lens surface on the Op-
tical Pick-up Block with 7 mm aperture.
Frequency response 2 Hz to 20 kHz (± 0.5 dB)
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
Dimensions (w/h/d) incl. projecting parts and
controls: Approx. 280 × 122.5 × 347 mm
Mass Approx. 3.7 kg
Design and specifications are subject to change without notice.

Summary

Servicing Notes

Power Supply During Servicing

Procedure for supplying power to the unit during servicing.

Fluorescent Indicator Tube and Key Check Mode

Procedure for checking the fluorescent indicator tube and key inputs.

Disassembly Procedure

Case, Chassis, Loading Panel Disassembly

Disassembly steps for case, chassis, and loading panel components.

Front Panel Section Disassembly

Procedure for disassembling the front panel section.

Main Board, CD Mechanism Deck, Base Unit Disassembly

BD Board, Optical Pick-up, Sled Motor Disassembly

Electrical Adjustments

Focus Bias Adjustment

Procedure for adjusting the focus bias after optical pick-up replacement.

RF Level Check

Method for checking the RF signal level using an oscilloscope.

S-Curve and E-F Balance Checks

Procedures for S-curve and E-F balance checks of the optical pick-up.

Sony CDP-EX77 Specifications

General

Type	CD Player
Channels	2
Digital Output	Optical
Output Voltage	2.0 V
Power Consumption	15 W
Disc format	CD, CD-R, CD-RW
Frequency Response	2 Hz - 20 kHz
Output	Analog