Sony cdx a 2001 service manual
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Extracted text from sony cdx a 2001 service manual (Ocr-read)
Page 1
5a
SERVICE MANUA
US Model
Canadian Model
AEP Model
West Germany Model
SPECIFICATIONS
System
Compact disc digital audio system
Laser diode properties
Material: GaAIAs
Wavelength: 780 nm
Emission duration: Continuous
Laser output power: Less than 4A6 uW
This output is the value measured at a distance ol 200 mm
from the objective lens surface on the Optical Pick-up Blockt
Frequency response
5-20,000 Hz
Signal-lomoise ratio
110 dB
Wow and flutter
Below measurable llmit
Outputs
Line output (for changer connector only)
General
Current drain
1 A (CD playback)
800 mA (during disc loading or eject)
Operating temperature
-10°C-55°C (14°F-131°F)
Mounting dimensions
Approx. 301 x 98 x 230 mm (w/h/d)
(117/; x 37/3 x 9% in)
not incL projectlng parts and controls
Weight
Approx. 5 kg (11 lb)
Supplied accessories
Dlsc magazine (1)
Mounting hardware (1 set)
Optional accessories
Compact disc single adaptor GSA-8
Extension cord RG45
Design and specifications subject to change without
notice
summer msc PLAYER
S ONY®
Page 2
CDX-A2001
TABLE OF CONTENTS
Section Title Page
Specifications ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1
Features ...................................... 1
1. SERVICING NOTES
Notes on Handling the Optical Pick-up
Block or Base Unit ~~~~~~~~~~~~~~~~~~~~ 2
Protection of Eyes from Laser Beam
during Servicing .......................... 2
2. GENERAL ----------------------------- 3
3. DISASSEMBLY ------------------------ 5
4. MECHANICAL ADJUSTMENTS
Large Elevator Gear Position
(Location 105) Adjustment 6
Homing Adjustment 7
5. ELECTRICAL ADJUSTMENTS
1. Focus Offset Adjustment . ~ . 8
2. Tracking Offset Adjustment . 8
3. Tracking Gain Adjustment -------------- 9
4. Focus Gain Adjustment ~~~~~~~~~~~~~~~~~ 10
5, PLL Freerun Frequency Adjustment ------ 10
6. DIAGRAMS
6-]. Block Diagram --------------------------- 11
6-2, ICSO3 CX7991 Pin Function Description ' 13
63. RF Printed Wiring Board ----------------- 14
64. RF Board Schematic Diagram ~~~~~~~~~~~~~ 17
6-5. IC Block Diagrams ------------------ 20
66. Other Printed Wiring Boards
6-7. Schematic Diagram """""""
6-8. Waveforms .............................
7. EXPLODED VIEWS ~~~~~~~~~~~~~~~~~~~~ 32
8. ELECTRICAL PARTS LIST ~~~~~~~~~ 38
Mounting Hardwares ~~~~~~~~~~~~~~~~~~~~~~~~~~~ 42
SAFETV-RELATED COMPONENT WARNING
COMPONENTS IDENTIFIED BY MARK A 0R DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONV.
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-
UP BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may
suffer electrostatic breakdown because of the poten-
tial difference generated by the charged electrostatic
load, etc. on clothing and the human body.
During repair, pay attention to electrostatic brealc
down and also use the procedure in the printed
matter which is included in the repair parts.
The flexible board is easily damaged and should be
handled with care.
PROTECTION OF EYES FROM
LASER BEAM DURING SERVICING
This set employs a laser. Therefore, be sure to fol-
low carefully the instructions below when servicing.
CAUTION
Use of controls or adjustments or performance
of procedures other than those specified herein
may result in hazardous radiation exposure.
1. Laser Diode Properties
GaAlAs
Material:
0 Wavelength: 780 nm
0 Emission Duration: continuous
0 Laser Output: max. 44.6 nW*
* This output is the value measured at a distance of
about 200 mm from the objective lens surface on
the Optical Pick-up Block.
2. During service, do not take the Optical Pick-up
Block apart, and do not adjust the APC circuit.
If there is a breakdown in the APC circuit (includ-
ing laser diode), replace the entire Optical Pick-
up Block (including APC board).
For repairing, when playing a disc in the state
removing whole block of the Optical Pick-up,
use the chuck plate (3-348-558-01).
ATTENTION AU COMPOSANT AVANT RAPPORT
A LA SECURITE!
LES COMPOSANTS mENTiHEs PAR UNE MAROUE A
sun LES DIAGRAMMES SCHEMATiouEs ET LA LISTE
DES PIECES sowr cnmouEs POUR LA sécunml:
DE FONCTIONNEMENT. NE REMPLACER cas coM-
POSANTS QUE PAR DES PIECES sonv DONT LES
NUMERos sour DONNés DANS CE MANUEL ou
DANS LES SUPPLEMENTS PUBLIES PAR SONY.