Sony TC-766-2 Service Manual page 27

TC-766-2
TC-766-2
SCHEMATIC DIAGRAM — Amplifier Section (UK, AEP model) —
[AUDIO AMP BOARD]
L-CH QIOl 2SCI345E Q102 2SC458D {CONTROL BOARD) Q103,104 2SCI345E Q105 2SC458D QI06 2SCI363 QIO7 2SC1363 Q108 2SC458D QI09 2SC458D REC Bias] $b) 4R)
MIC AMP MIC AMP LINE AMP LINE AMP MUTING
SWITCHING REC AMP o32y REC AMP 13510335 OScUNT)
RIOG 10k 33,0V . cit cl29 _ {CONTROL BOARD)
MIC ATT (@8)) 193 p i a n po 0.0018 470p/S00V af sie 5103-4 -—-
0 R107 REC MODE (LU)
4 $ — 95y 7) 100k R145 aco | [Monitor]
yx 5 (N Ri44 680} 15k | o5= lle—4 nee s
faeH {
RI33. 33 hye
0 > bg Q -— RFI42-2202C
i | 31042 ce
JI0l B & R102
30 Qo! 3k REC BIAS LIO6 2.2m
2h = fal tot
Ma [339 R105 & OX Or) RIA 22k aman 1 C328 'iia atc [ — T | TAPE
ne oO
m tos Gy et te Ph as iT E+} —
i f 5k 7
RIO4 RIO8 ae
47
a
RIND RI24 150 820
a2bKth a S63V (72)
'
|
£4,
fae NAS 5
7 SVPLOW CNJ701
-—-—---
= 13vdov pe z a
: ti svbMed 24v Gaeta EONTROL)
Se a ' (205V0 HIGH D101,301 1740 BOARD
QHO~I14 2SC1363 Ri68 22k ,,010| Y
SWITCHING
y HEIOI
«
sty REREOTT
ir
® X £F85-2202B Q505 2scl475 J
£0 ans oy a a my ERASE IL) VOLTAGE E
ay ImH C3
NORMAL ~ SPECIAL-~Fe-Cr 9 5102-1 L102 1.5mH
RISS 5 sone
TPB R69 | 470 | la qisev acpLOw
S303-1 R367 R368 22k 0301 C
o
RIS4 3.9k J zay
COIR DY [eae "VES
500V) | te 46VACIMED [REC ODER] ,,_'2k $103-1
. L103 820pH L104 6BOpH 27k 9 REC he (162 AC) HIGH ' Pg I! REC MODEIL)
1 C126 cla? Cl28 R509 R510 Ri? ot
Cl23 124 C125 >= 10k $303-3 LA HE 301 REC '8 = 0.0068 0082 0.0089 10k 3.9
NSO! 6.012 0.6082 6.0082 Bx : 0505 REC
=
Ria Risl
T
:
REC MODEIR)
LL $ x erss-22028
J
a i
ae mere | sour a aT] Eu ates] fe aml Gael ae mate L e meal) i) og | 6) eh
D @ oo k 22k COILS p C331 50V ! OS Tw!
es asoisase | oD+ 8204 sO GH Gh"
sey | ate
\ 06v SMM) R148 ae2 RIGS RI64 RIES R66 [C508 [C509 $501 $501
QI27 2SA677 | 180 ons au4
LINE AMP \ 10k 10k 10k 10k 10k | 10 10 a ~ fe)
v_| 25V + of cNu702
Rett Ren 7
= LOW~ MED~ HIGH SYSTEM CONTROL
eas RSI R513 Baap
12k 22k 82k 1 sg
| 43.6),
(INPUT-OUTPUT BOARD) _ . i
J301
=
[wc I} yV '1 0505 '
: yt Ptce gee 1S
R275 SS
(332 | 4 3K 2) 103
0.001 ! Ca) —) [LINE ouT(L)]}t
Ui 1 R522 1 !
;
3 2SC458
on @ he
Eas Ss 123 2SC458D
Nas 33k
QNS 2SCI345E ,, ON6 2SK43 2s,.v ONT 2SA705 O20 eee ee Oe eR. oxy 0124 2SC458D 0125 2SCI3I8 1) 3s
PB EO AMP 4 PB EO AMP PB EO AMP j HEADPHONE AMP HEADPHONE AMP '| weEy 2
HEAD SELECTOR 203 oA | ,
a0 R200 47K RAI
1 / | AEN 0509 !2sci364
BOARD 47 33k c207 MONITOR SWITCH i 1
150k R216 R217 '] RELAY |DRIVER
-
iN) W2w) 10/25V a S6k 26.5. 100k
[TuRAS TAPE DIRECTION I H
: : : H-DLAYBACK-M si Snes a)
(N) C510 |
Quis 1, c2l2 DIO3 IT22 l
164-2202 ~ | te-o-9 KK) ioe LC) EC_MODE (L)
1PBID | P20! i} = a | S103-2
43k J501 pl :
HPI02 = 1 12") 202 100p| O6v J ] (HEADPHONES ! ro
yo-22020,- PIT ¢208 | RECO
Pau C201 |R203.NOKIN) S30 4! 1 erat
PLION
HP302 i Bae mn ©) REC MOE
40-2202D = | ea a R475
by et R444 | 1
iW PB IRI Z
-
F
R474 B ) P30!
| |
!
{ i
LINE OUTIR) ee GS) REC MOE
- pL I ee wee ee ee me 4 wew)
; Q507 2SCI364 Q50!1 2SK30A 502,503 2SC1364 |
1 OC SWITCHING 24v STABILIZING STABILIZING POWER SUPPLY array = =
! POWER SUPPLY ! [INPUT-OUTPUT BOARD)
| [0503 i740 AGEN. R201. m32v 0504 2SCII73
0504. STABILIZING POWER [SUPPLY
! a
\
L- 0503
RY501
ee) '
BV) 607
SD) 7520. 22k
| Oy, 4
y O6v <OV> R52I '
10k