8
7
6
5
|
4
3
2
1
CIRCUIT BOARDS AND WIRING CONNECTION DIAGRAM
TERMINATIONS
h> D5
BRN
BRN
MAIN CIRCUIT BOARD
ELECTRET
CONDENSER
MICROPHONE
(R-CH)
(L-CH)
S3: MODE SELECT
ITC
2SC2021LNF(R,S)
or 2SD636H(R,S)
:
wg
(Oo
SPS
Al
PB] 0.6v
WHT
VR2: VOLUME
MOTOR GOVERNOR
CONTROL (R-CH)
CIRCUIT BOARD
Q3
2SC2021LNF(S)
or 2SD636H(S)
[2SC2021LNF]
Cathode
Ca +q~A
\
Q6
Q4,5
2SA937F
2SC2021F(R,S)
or 2SA786F
or 2SD636(R,S)
1C3, 4
or 2SB641
[2SC2021F]
BA527
a
Ee} OV
eG
NG) Taw 4
E{ 4.6V |
efosy | [sPeov |slisy |
epssv
ee
eI
BLK ..-.-. Black
BLU ...... Blue
BRN ...--- Brown
GRY -«..--- Gray
BLK
GRN .-..--- Green
L. BLU --- Light Blue
NIL
.----- No Color Mark
ORG ..---- Orange
PNK ...-.- Pink
WIRE CLAMPER
RED ...... Red
SLD .....- Shield Wire
VLT .----- Violet
WHT...--- White
YEL -.---- Yellow
NOTES:
e The circuit shown in
on the conductor is
B+ (bias) circuit.
¢ Described in the circuit board diagram are two types of numbers; the supply
¢ The supply parts number is described alone in the replacement parts list.
e The circuit shown in
on the conductor side indicates printed circuit
parts number and production parts number for transistors and diodes.
on the back side of the printed circuit board.
One type of number is used for supply parts number and production parts
e Valued indicates in (_——]
are under no signal condition and record mode
number when they are identical.
with volume control at minimum
position.
e.g.
Q1,2
However, the voltage in playback mode is indicated in (
) when it differs
2SC2021LNF(R,S)——Production parts number
from that in record mode.
or 2SC636H(R,S)
For measurement, use VTVM.
[2SC2021LNF]
Supply parts number
[6]
