Sony HCD-H991AV User Manual

— 1 —
COMPACT DISC DECK RECEIVER
SERVICE MANUAL
Model Name Using Similar Mechanism HCD-H771/H771D
CD Mechanism Type CDM38-5BD19
Base Unit Type BU-5BD19
Optical Pick-up Type KSS-213BA/F-NP
Model Name Using Similar Mechanism HCD-H771/H771D
Tape Transport Mechanism Type TCM-220WR2E
— Continue on next page —
MICROFILM
CD
SECTION
TAPE
DECK
SECTION
SPECIFICATIONS
AM tuner section
Tuning range
US, Canadian models:
AM: 531 – 1,710 kHz (with the
tuning interval set at 9 kHz)
530 – 1,710 kHz
(with the tuning interval set
at 10 kHz)
German, Italian models:
AM: 531 – 1,602 kHz (with the
interval set at 9 kHz)
AEP, UK models:
MW: 531 – 1,602 kHz (with the
interval set at 9 kHz)
LW: 153 – 279 kHz (with the
interval set at 3 kHz)
Australian, Argentine models:
AM: 531 – 1,602 kHz (with the
tuning interval set at 9 kHz)
530 – 1,710 kHz (with the
tuning interval set at 10 kHz)
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
CD DIGITAL OUT OPTICAL
(Square optical connector jack, rear panel)
Wavelength 600 nm
Output Level – 18 dBm
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 ohm unbalanced
Intermediate frequency
10.7 MHz
CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ = 780 nm)
Emission duration:
continnous
Laser output Max. 44.6µW*
* This output is the value
measured at a distance of
200 mm from the
objective lens surface on
the Optical Pick-up Block
with 7 mm aperture.
HCD-H991AV
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
PX Model
HCD-H991AV is the tuner, deck, CD and
amplifier section in MHC-991AV/G99AV.
Photo: E model
www.freeservicemanuals.info
It`s free
All over the world

Sony HCD-H991AV Specifications

General

Brand	Sony
Model	HCD-H991AV
Category	Stereo System
Language	English

Summary

Servicing Notes and Precautions

Handling Optical Pick-Up Block

Precautions for handling sensitive optical components to prevent electrostatic discharge.

Laser Diode Emission Check

Guidelines for safely checking laser diode emission from the optical pick-up block.

Disassembly Procedures

Loading Panel Disassembly

Front Panel Disassembly

TC Mechanism Deck Disassembly

Electrical Adjustments

Deck Section Adjustments

Covers electrical adjustments for the deck section, including azimuth and tape speed.

Playback Level Adjustment

Procedure for adjusting playback levels for Deck A and Deck B.

Record Bias and Level Adjustment

Steps for adjusting record bias and record level for the tape deck.

Diagrams and Schematics

Tuner Section Block Diagrams

Block diagrams illustrating the signal flow within the tuner section.

Tuner Section Printed Wiring Board

Tuner Section Schematic Diagram