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Sony CDP-791 Service Manual

Sony CDP-791
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CDP-791/X1 1
1ES
SERVICE MANUAL
US
Mode!
Canadian
Mode
i
CDP-X
1 11
ES
AEP
Model
UK Mode!
CDP-791
Photo:
CDP-791
i
j
i
t
c
c
t
SPECIFICATIONS
Compact
disc
player
Frequency
response
Signal-to-noise
ratio
Dynamic range
Harmonic
distortion
Channel
separation
2
Hz
-20 kHz
±
0.5
dB
More
than 108
d8
More than
98
d8
Less
than
0.0027%
More
than 100
dB
Outputs
LINE
OUT (FIXED)
(phono
jacks)
LINE
OUT
(VARIABLE)
(phono
jacks)
DIGITAL
OUT
(OPTICAL)
(optical
output
connector)
PHONES
(stereo
phone
jack)
Output level
2
V
(at
50
kilohms)
Load impedance
over 10 kilohms
Output level
max.
2
V
(at
50
kilohms)
Load
impedance
over
50
kilohms
Wave
length
660
nm
Output
level
1
8 dBm
Output
level max.
1 0 mW
Load impedance
32 ohms
General
Power requirements
US, Canadian Model:
120
VAC,
60 Hz
AEP Model:
220 V
-
230 V AC,
50/60 Hz
UK Model:
240 V AC, 50 Hz
Model
Name
Using Similar
Mechanism
CDP-291/391
CD Mechanism
Type
CDM14-5BD1
Optcal
Pick-Up
Block Type
BU-5BD1
Power
consumption 1
2
W
Dimensions
(approx.,
430
X
1
1 o
X
280 mm (w/h/d)
including
projections)
(
1 7
X
47. X
1
1
7. inches)
Weight
(approx.)
4
0 kg
(8
lbs 1
4 oz)
Supplied
accessories
Audio
cord
1
(2
phono
plugs
-
2
phono
plugs)
Remote
commander
1
R6 (AA)
batteries
2
Remote
commander
RM-D791
Remote
control
Infrared
control
system
Power
requirements
3
V
DC with
two R6
(size AA)
batteries
Dimensions
Approx.
62
X
20
X
1
75
mm
(w/h/d)
(IVnX
U
/«X7
inches)
Wei
9
ht
Approx.
130
g
(4.6
oz)
Including
batteries
Design
and
specifications
subject
to change
without
notice.
COMPACT
DISC
PLAYER
SONY
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Sony CDP-791 Specifications

General IconGeneral
TypeCD Player
Disc formatCD
CD MechanismKSS-240A
Frequency Response2Hz to 20kHz
Signal-to-Noise Ratio115dB
Total Harmonic Distortion0.0025%
Line output2V
Digital outputscoaxial
Dimensions430 x 110 x 290 mm
Weight4.5 kg
Year1992
Channels2
Digital OutputCoaxial
Digital converter1-bit
OutputLine output
Output Voltage2V

Summary

SPECIFICATIONS

Compact Disc Player Performance Specs

Details frequency response, signal-to-noise, dynamic range, distortion, and channel separation.

Output and General Electrical Specs

Covers output levels, impedance, power requirements, and dimensions for various sections.

Model and Mechanism Information

Lists similar models, mechanism types, and included accessories like the remote.

SAFETY CHECK-OUT

Leakage Test Procedure

Method for testing AC leakage current from exposed metal parts to earth ground.

Safety Component Warning

Identifies critical components for safe operation and replacement guidelines.

HANDLING AND EMISSION NOTES

Optical Pick-up Block Handling Precautions

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

Laser Diode Emission Check Guidelines

Guidelines for safely checking the laser diode emission from a safe distance.

SECTION 1 GENERAL

Location of Front Panel Controls

Identification and description of controls on the front panel of the device.

SECTION 2 DISASSEMBLY

Base Unit Removal Procedure

Step-by-step instructions for removing the base unit of the CD mechanism.

SECTION 3 ELECTRICAL BLOCK CHECKING

RF Level and S Curve Diagnostic Checks

Procedures for checking RF signal level and S curve waveform for diagnostics.

E-F Balance and Frequency Checks

Methods for checking E-F balance, RF PLL frequency, and focus/tracking gain.

SECTION 4 DIAGRAMS

IC Pin Descriptions and Block Diagram

Details on IC pin functions and an overview of the system's block diagram.

Printed Wiring and Schematic Diagrams

Visual representations of circuit board layouts and detailed schematic diagrams.

IC BLOCK DIAGRAMS

Key Integrated Circuit Diagrams

Block diagrams and pin assignments for key integrated circuits used in the device.

SECTION 5 EXPLODED VIEWS

Chassis Section Exploded View

An illustrated breakdown of the main chassis components and their assembly.

SECTION 6 ELECTRICAL PARTS LIST

BD Board Component Listings

A list of capacitors, connectors, diodes, ICs, jacks, resistors, and transistors for the BD board.

HARDWARE LIST

Hardware Components List

A list of screws, nuts, and other hardware used in the assembly of the unit.

ACCESSORY & PACKING MATERIAL

Included Accessories and Manuals List

Details on the remote commander, cords, manuals, and packaging materials.

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