Sony CDP-970 Service Manual

SERVICE MANUAL
US Model
AEP
Model
UK
Model
SPECIFICATIONS
Compact
disc
player
Frequency
response
2
Hz
-20
kHz
±
0.3 dB
Signal
to
noise ratio
More than 1 10 dB
Dynamic
range
More than 97
dB
Harmonic
distortion
Less than 0.003 %
Channel
sepration
More than
100 dB
Outputs
LINE OUT (FIXED) Output level
2 V (at 50
kiloohms)
(phono
jacks) Load
impedance over 10 kiloohms
LINE
OUT
Output level max.
2
V
(at
50 kiloohms)
(VARIABLE)
(phono
jacks)
Load impedance over 10 kiloohms
DIGITAL
OUT
Wave length 660 nm
(OPTICAL)
(optical
output
connector)
Output
level
-
18
dBm
HEADPHONES
Output level max. 28 mW
(stereo
phone jack) Load impedance
32
ohms
General
Power
requirements US model: 120V AC 50/60Hz
AEP
model: 220V AC 50/60Hz
UK model: 240V
AC
50/60Hz
Power
consumption 13 W
Dimensions
Approx.
430
X
1
1
0 X
340 mm
(w/h/d)
(17 X
43/5 X 13
3/5
inches)
Including
projecting
parts and controls
Weight
Approx.
5 kg
(1
1 lbs 1
oz),
net
microfilm
Remote commander
RM-D570
Remote
control system
Infrared control
Power requirements
3
V
DC
with
two batteries size
AA
(lEC
designation R6)
Dimensions
67
x
20 x 175 mm (w/h/d)
(2
3/4
X
13/16
X
7 inches)
Weight
135
g
(4.7 oz)
including batleries
Supplied
accessories
Connecting cord
(1)
(2
phono plugs
<-
2
phono plugs)
Remote commander
(1)
Size
AA batteries
(2)
TABLE
OF
CONTENTS
Title Sect ion
Page
SPECIFICATIONS
I
Protection of Eyes from
Laser Beam During
•
Servicing
2
Safety
Check-out
2
SECTION I.
GENERAL
Location of Controls
3
SECTION 2.
ADJUSTMENTS
4
SECTION 3. DIAGRAMS
3-1.
Semiconductor
Lead
Layouts
7
3-2.
Circuit Boards Location
7
3-3.
Printed Wiring
Boards
9
3-4.
Schematic
Diagram
13
3-5.
IC Block Diagram
16
3-6.
Waveforms
17
SECTION 4. EXPLODED VIEWS
18
SECTION
5..ELELCTRICAL PART LIST
21
COMPACT DISC
PLAYER
s

Sony CDP-970 Specifications

General

Type	CD Player
Digital converter	1-bit
Channels	2
Frequency Response	2 Hz - 20 kHz
Signal-to-Noise Ratio	110 dB
Dynamic range	100 dB
Channel separation	100 dB
Total Harmonic Distortion	0.003%
Digital outputs	Coaxial, Optical
Power Consumption	15 W
Disc format	CD
Digital-to-Analog Converter	1 Bit D/A Converter
Output	Digital
Line output	2V
Output Voltage	2V
Dimensions	430 x 110 x 290 mm

Summary

Safety Check-out Procedures

AC Leakage Test Methods

Methods for measuring AC leakage current from exposed metal parts to earth ground.

Laser Beam Safety Precautions

Optical Pick-up Block Handling

Precautions for handling the optical pick-up block, including electrostatic discharge and flexible board care.

Laser Diode Properties

Optical Pick-up Block Servicing Guidelines

Guidelines for servicing the optical pick-up block, advising against disassembly and APC circuit adjustments.

Adjustments

RF PLL Frequency Adjustment

Focus Bias Adjustment

E-F Balance Adjustment

Focus/Tracking Gain Adjustment

Diagrams and Layouts

Schematic Diagrams

Detailed electronic schematic diagrams for the entire unit, broken down by circuit board.

IC Block Diagrams

Waveform Diagrams

Illustrations of expected waveforms at various test points for troubleshooting and adjustment verification.

Exploded Views

Exploded View: Mechanism

Exploded View: Pick-Up Block

Exploded view of the optical pick-up block (BU-5E), showing its internal components and assembly.

Electrical Part List