Technics RS-CH770 - Main Circuit Schematic

RS-CH770
Al MAIN CIRCUIT (P.C.Board:on page 24)
a
10101 zs
C143 C115 CXA1998QT6 2
470P 470P R/P EQ AMP =A
Q101 aa
2SJ164RATA
HEAD SELECT
(REC:ON)
Q105,106
2SD1819RATX Se
DECK 1 Li by MUTING -8
Leh §_] PLAYBACK & -$ ye 6) es
r 3} SIGNAL(Lch) 5 5a
PLAYBACK
a
mn
Ne.
e
HEAD ie mt
R ch» §) | R107 ory)
10K ov
60)
PBEQ 4
DECK 2 ee re)
Beco Eee LATCHES (9
Loh ae 0
(18)
R/P HEAD (0.2¥)
a7
c
G5)
5 (0.1V}
Sz:
tev
68 4
Q103,104 « ay
28J164QTA
za
63°:
HEAD SELECT i=
aioe (PLAY:ON) t 3
330K 8>e +
ow 1§
rs)
R158 | 22K
Q303,304
2SD2436STXRA 2SD1450RSTA
SWITCHING BIAS OSC
(REC:ON)
ERASE CURRENT
CHECK POINT
301
2SD1819ATX
BIAS OSC CONT.
Q306
DTC144EUT107
BIAS OSC CONT.
DTC144EUT107
BIAS OSC CONT.
21955