Technics SL-Q303 Service Manual

m@ TECHNICAL EXPLANATION
e Principles of Auto Size Detection
This unit employs a mechanical detection system instead of a conventional electrical detection system.
The mechanical system makes it possible to detect the presence of a record and the size (30cm/17cm) of the record.
However, it is unable to detect a 25cm record.
It is detected as a 17cm record. In that case, manual operation is required.
Note:
Playing special records
Follow ‘‘Manual play” for playing the following types of records. (Special records may interfere with correct auto-
matic operation.)
This is not a malfunction of the turntable.
* Non-standard size records (standars size (EIA, IEC, DIN, JIS.) are 17,25 and 30 cm).
(However, 25 cm (10’’) records can not be selected automatically by sensor.)
*Sono-sheets, on light record and thin records.
* Badly warped records.
e Mechanism operation for auto size detection
The mechanism and the part names necessary for auto size detection are shown in Fig. A.
30cm record detection pin
Size detection base
Turntable
17cm record
detection pin Drive cam
Detection pin
\
Record size
Reset lever detection plate
PU fixing plate
Index sub-plate Drop position setting pin @
index plate
Fig. A
Drop position setting pin @
Turntable
rotating '
direction /

Technics SL-Q303 Specifications

General

Brand	Technics
Model	SL-Q303
Category	Turntable
Language	English