Teac A-2300SD - Page 44

Important Information for Service Stations and Customers
Page 2 of 1
TECHNICAL INFORMATION
APPLICABLE SERIAL NO 303731 and up
A-2300SD NO. 755-002 _
SERVICE MANUAL REVISION NOTICE DATE NOV 27, 1975
The following modifications have been made to the MUTING CIRCUIT
of the A-2300SD with serial numbers 303731 and up.
Please amend the existing manuals to reflect these changes.
REVISED MUTING CIRCUIT PC BORAD and PARTS LIST
See page 36 and 42 on Basic manual
Ql^jQjiyjy^L. ..
I MUTING
■ R E VISED
n
151
•
j
/^0602
iSM7
v/vqroi\ /\K|/
■ f s'JS!
RtoieiOk /\ C«01 |l>«t330»
\
? j
|l‘i; “"""fSVk’ |r
/ U|-
D 605 .
IS2473Ve2
Rsot <
390k <
* R603
p 3.9k
R607 *
3.9k 4
> R608
1 330k
L fii -
0601
1 R604
1 39k
VA-1
rC
\ 06 o;
R602
)
1 ■ ■ ■■ -
r
• Ceoi 1
‘47/25V %
(KU) 1
> Reos 2
*‘820 ^
b R606
r I2k
Q603
^C602
220/35V
\ iDsoz
)S247 3VE f
!^D603 j
IS2473VE I
0604
Below is revised parts list.
For reference, see the appropriate
Schematic and PC Bd.Diagram.
0605
,0606
51681960 PC Bd. ASS'Y
51671960 PC Board -
51681961 PC Bd. ASS'Y
51671960 PC Board
REF. NO. PARTS NO.
DESCRIPTION
Q601,602 50424600 2SC828 (S)
D601
51430890 W03C
D602
50425170
1S2473VE
D603
50425170
1S2473VE
D604
50422170
1N60 (Germanium)
D605
50425170
1S2473VE
R601
50571440
390 k ohm
R602 50570820
1 k ohm
R603
50570960 3.9 k ohm
R604
50571200
39 k ohm
R605
50570560 820 ohm
R606 50571080
12 k ohm
R607
50570960 3.9k ohm
R608
50573420 330 k ohm
R609
50571120
18 k ohm
R610 50570980
4.7 k ohm
R611 50570560
820 ohm
R612 50571300
100 k ohm
R613
50571060
10 k ohm
R614
50570500 47 ohm
C601
50554490
47uF
C602
50554380
220uF
C603
50554980
2.2uF
^ W/GRN I
(LUNEOUT)
W/VIO 0 ^-^,
(S.lNE 0 Un|
47''
)6oil
N60+ C-B
|F ''Q603¥
.B B
I Q6O6|q605
- c c •?
I 1
X y ti8k
E E *
220/35\7l
LD602
tlS2473VE V-e
ED603 0604}
te473VE ^
^ SRsil T'
t ^20 X
Revised Muting PC Board
TEAC CORPORATION