NAD 613 - ADJUSTMENT POINT; MICROPROCESSOR CONNECTION DIAGRAM

ADJUSTMENT POINT
Oscilloscope
| P105
R403 dd ar
RECORDING LEVEL
(+) (+)
ee
R117 R118
PLAYBACK
LEVEL
[|
LA07
BIAS
FREQUENCY
C7) pP401
ve
GF
asso
BIAS
CURRENT
LINE VTVM
OUT
Fig.2
0° (IN PHASE) 45° 90° 180°
DOO
Fig.3
Confirming
phase
relationship
Fig.4
MICROPROCESSOR
CONNECTION
DIAGRAM
ENC/DEC
MPX ON/OFF
REC/PB
BIAS.CONT
CAPS
SOL
FF
REW
O-PLAY
DOLBY ON/OFF
DOLBY B/C
SYSTEM RESE
HD404336A33S
(Vdisp) RA1
R23
R22
R21
R20] 60|
| 6 |R71 R13
R72 R12] 58 |
| 8 JROO (SCK) R11
| 9 JRO1 (ST) R10] 56 |
RO2 (SO) R93
RO3 (TOC) R92
TEST R91
RESET R90
rere
Re2{50
+5V LL 7 48 |
N.C [18]
META [30] R30 (ANO) D11,43]
F-REC R31 (AN1) D10
PACK IN [324 R32 (AN2) D9f43]
CrO2
R33
(AN3)
D8
R40 (AN4) D7
NORMAL
R41
(ANS)
D6
HIGH
[264
R42
(AN6)
D5{39]
METAL
R43
(AN7)
(STOPC)
D4
Rch
LEVEL
R50
(AN8)
(BUZZ)
D3
Lech
LEVEL
R51
(AN9)
(EVNB)
D2
KEY2
R52
(AN10)
(INT1)
D1
KEY1
R53
(AN11)
(INTO)
DO
+5V AVecc Vee
—10—
Vdisp
R.SENS
P-OFF
RI-IN
RI-OUT
Seg.a
Seg.b
Seg.c
Seg.d
Seg.e
Seg.f
Seg.g
Seg.h
Seg.i
Seg.j
Seg.k
Seg.l
Grid-7
Grid-6
Grid-5
Grid-4
Grid-3
Grid-2
Grid-1
REC MUT
LINE MUT
BUS LINE
FT
+5V