Technics RS-676US

INTERCHANGEABLLITY:
Old and new parts are not interchangeable, but if you change nine parts together listed
above, they are mutually interchangeable.
CHANGEOVER:
From the production of November, 1974. (From serial number RK4...onward)
F. Change of Audio Amplifier Circuit (1)
REASON:
Many types of CrOz tapes are currently sold in the market. Because of the difference
in tape sensitivity, there arises a little unevenness with the old type set which permits
determination of CrOz gain by adjusting Normal for overall gain. For the new type we
have so designed that overall gain can be adjusted finely when being CrOz2 mode. As
stated in the service manual, first step, adjust VR9, 10 (L, R) so that 0.42 V is obtained
with Normal, then place the unit in CrOz2 mode, and make the above-mentioned fine
adjustment only when the 0.42 V cannot be obtained.
MODIFICATION:
ee:
Part
No.
Description
Former)
New
Remarks
Former New
Carbon Resistor ERD14VJ152 | ERD14VJ102
” — ERD14VJ221
CHANGEOVER:
From the production of November, 1974. (From serial number RK4...onward)
Schematic Diagram & Printed Board
a Oo
OQ oO
Sk as
as Sn
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= co
OR
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= ce
wm
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oe
R77,78 1K
Fig. 1