Sony HTC-D159 - Handling the Optical Pick-up Block; Laser Diode Emission Check; Safety-Related Component Warning

MODEL IDENTIFICATION
Back Panel
Note on the Transit key
4-955-796-01: AEP, UK, Italian, Models
4-955-796-21: US, Canadian Models
4-955-819-31: HTC-D309E Model
The transit key (a)) on the bottom exterior of the CD player protects
the optical system against shock during transportation.
Before operating the unit, be sure to remove the key by following the
instructions on the label, and store it in a safe place.
When transporting the unit, put the key its original position and lock
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 break-
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.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so
as to be focused on the disc reflective surface by the
objective lens in the optical pick-up block. There-
fore, when checking the Jaser diode emission, observe
more than 30 cm away from the objective lens.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK A OR 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 SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE MARQUE /\
SUR LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIECES SONY DONT LES
NUMEROS SONT DONNES DANS CE MANUEL OU
DANS LES SUPPLEMENTS PUBLIES PAR SONY.
it in place.
TABLE OF CONTENTS
Section Title Page
Specifications ry lj
Notes on Handling the Optical Pick-up Block
or Base Unit CeCe ome ee er ereroreeneresesesesssens 2
Notes on Laser Diode Emission Check +++++++++++++ 2
Note on the Transit Key er 2
Safety Check-out Cd 3
1. GENERAL: 6ta65 eos sSotins eeteratyles 5
2. ADJUSTMENTS
2-1. Mechanical Adjustment -++++++++seeereeeees 4
2-2. Electrical Adjustment <++-++++++reeeeeee eee 4
Cassette Deck Section ey 4
CD Section rr 7
3. DIAGRAMS
3-1. CD Section Block Diagram -+-+++-++++++eeeee 9
3-2. Tape Deck Section Block Diagram +--------- 11
3-3. CD Section Printed Wiring Boards --+-++++-+> 16
3-4. CD Section Schematic Diagram -+++-+-+++++-- 19
3-5. Cassette Deck Section Printed Wiring Boards -
and Schematic Diagram (Except E Model) +--+ 25
3-6. | Cassette Deck Section Printed Wiring Boards
and Schematic Diagram (E Model) +:+++++++> 29
4. EXPLODED VIEWS ..--------eeeeeeeees ae
5. ELECTRICAL PARTS LIST .------------ 4}