Teac A-450 - PC BOARD SECTION (Diagram); RECORD;PLAYBACK AMPLIFIER

Toovey ~
LEM/COPY CAL}
TNE IN|
INE IN]
Q— AM -
vR4Ol
101/201
MIC Qior 201 R
102/202 1
«3 . irae
203
——l| S|
vRIO2 /202
P |
SIOl R/P Sw |
aaa
CIRCUIT
REF. NO.
Q70! / Q80!
Q702 / Q802
Q703 / Q803
Q704 / 0804
Q705/ Q805
Qsol
RECORD AMPL.
L103/203gf 004 105/205
204,
est
1800P/50V
5%
c705
3000P/50V 5%
DESCRIPTION
Ge)
WS
L8Ol
R8OI |R803
CIRCUIT
REF.NO.
DESCRIPTION
2SC1327(T)
2SC644(S)
2SA666 (IS)
2SC644(T)
2SC644(S)
Q706 /Q806
Q707/Q807
Q708 / Q808
Q709/ Q809
2SK30(DA) or
2SK30(DB)
2SC1327(T)
2SA666 (1S)
2SC644(T)
SIMPLIFIED CIRCUIT DIAGRAM
DOLBY B-TYPE PROCESSOR
1 [OOLBY FM/COPY]
NOTE
1. ALL RESISTORS ARE 1/4 WATT, 5%, UNLESS MARKED
OTHERWISE. RESISTOR VALUES ARE IN OHMS (k=1000,
M=1,000,000).
2. ALL CAPACITOR VALUES ARE IN MICROFARADS (p=PICO-
FARADS).
CAL POINT
(DOLBY TEST POINT)
|
TARiitenr
LOUTPUT |
TroW/201
ray
HEADPHONE
AMPL
¥- R107/207 P
si01
R/P SW
0703 Mg5i3
METER AMPL.
9351/36!
Q352 /362 VRIOB/ 208
O36!
9304 “J Gay.
0305 a Nay
PEAK LEVEL
AMPL
$~-o9!
0705
M8513A-R
C719, 0.1/50V
fi2-75{
[Revision [ bate | cnance no. |
BP 27 KOM O10) 53510): 7. UU (0)