NAD 613 - SCHEMATIC DIAGRAM 2;2

A
SCHEMATIC DIAGRAM 2/2
METER Poh
METER Loh
POWER OFF
S.RESET
+82
FL
a Ss i ee eS een ee So L$999 b
MICRO CMPUTER
HD404336A33S
R921 120
R716
2SD6s5
C706 223
D703
Q702 TA7291S
ROTATION
SENSER
Q706
28C1740S
R719 18K
707 223
I
MECHA DRIVE
—~25—
si
ll JL702A
So eee
st} —-—-
REEL (FF)
+82
so.
Q701
BIAS. CONT
cap
SOL
FF
REW
O-PLAY
OL ORVOFF
oo Bvt
TEST
S-RESET
GND
AYss
METAL SW
R703 R704
EF 3K
C701
10/35
| DECK MECHANISM
-_—— - ——— - — - — -. + —. - —- - —— -
a
NAAF-5 336-3!
=
—+—
'
H |
| '
H |
'
RI OUT
Pi
(CST aaa MRE
FL TUBE
Q751 BJ337GK
|| JLBOTA
Po $
aoe, aca Lege a eS
JL 801B
ries
801 4.19MHz
Ps8o1
@Q801 HD404222C81S
[ NAETC-5509—-1
OPERATION
R771 -RI72_—— RITE RTA R762
680 820 1.5K 2.2K 4.7K
ape, al rod dla al
$771 $772 S774 $775 S773
tr REW REC REPEAT RESET
R776 R777 R778 R779 R780
KI 660 820 1.5K 2.2K 4.9K
a
sToP PLAY PAUSE DOU MPX
NOT
@ THE COMPONENTS IDENTIFIED BY MARK AV ARE CRITICAL
REPLACE ONLY WITH PART NUMBER SPECIFIED
®@ VOLTAGE (MEASURED WITH VOLTMETER) G1S DC VOLTAGE. (NO INPUT SIGNAL)
® ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA933S UNLESS
OTHERWISE NOTED.
@ ALL NPN TRANSISTORS ARE EQUIVALENT TO 25C1740S UNLESS
OTHERWISE NOTED
@ ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
@ ELECTROLYTIC CAPACITORS (4) ARE IN pF/AW
®@ ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX)3pF+030, 33pF+330. 330pF+331. 0, O33nF+333
®@ ALL RESISTORS ARE IN OHMS 1/4 WATTS UNLESS OTHERWISE NOTED.
@ THE THICK LINES IN PC BOARD ARE THE PRINTING SIDE OF THE PARTS
EX) Eoetetl e PRINTING SIDE
@ CIRCUIT 1S SUBJECT TO CHANGE FOR iMPROVEMENT.
FOR SAFETY.
Re14 1.5K
Q802
Z86E081 2PSC
4 18
x02 gi
1 2MHz i? Sade
5 14
je 3
ey ee
ee be
0
Q60s
28017408
2SA933S
R816
1. SK
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—26—