Akai 1722W - Page 5

SECTION 1
SERVICE
MANUAL
TABLE OF CONTENTS
L
SPECIFICATIONS:
«
2s.
caiccenigie
bebe
a
bes
det
ehh
Mobi
as
tases
Gees
tee
4
Il.
MEASURING
METHOD
.............-.0-
2202
e
eee
eee
ete
teens
6
1.
TAPE
SPEED
DEVIATION
...........
2...
eee
eee
ne
ete
6
2.
WOW
AND
FLUTTER
......
2...
eee
ee
teen
eee
6
3.
FREQUENCY
RESPONSE
.......-.
0
eee
eee
eee
eee
6
4.
SIGNAL
TO
NOISE:
RATIO
122.
dd
hie
Sioltal
tdacee
eb
eran
eR
eheee
eS
sk:
cng
BS
eee
Bas
6
5.
TOTAL
HARMONIC
DISTORTION
FACTOR
.......-....
0200
e
ee
eee
7
6.
CROSS
TALK
(Cross
talk
between
the
tracks)
...........0
02
e
ee
eee
eee
eee
7
7.
ERASE
RATIO
..
1...
ene
ene
ee
eee
tt
eee
7
8.
POWER
OUTPUT...
ee
eee
een
ees
7
Hl.
DISMANTLING
OF
UNIT
.............
02020
e
cee
eet
eae
8
IV.
MECHANISM
ADJUSTMENT
------
2-20-2000
c
eset
cere
c
treet
entrees
testes
9
I
PINCH
WHEEL
ADJUSTMENT
ig
aa
asa
ier
Pan
eee
Spb
ca
ate
Vain
he)
Griese
Ob
TS
eAD
eel
S
ec
R-Rh
One)
o.
wh
aleco Seine
aa
9
2.
SUPPLY
REEL
TABLE
TENSION
ADJUSTMENT
........-..---.5e
ee
eee
ee
eres
11
3.
TAKE
UP
REEL
TABLE
TENSION
ADJUSTMENT
...........-------+
eee
eeee
11
4.
FWD/REC
MODE
MECHANISM
CHANGE
AND
ADJUSTMENT
..........-.----
12
5.
DRIVE
BELT
POSITION
ADJUSTMENT
.........---.
eee
eee
eee
eee
eens
12
6.
FLYWHEEL
LOOSE
PLAY
ADJUSTMENT
..........-----5
ee
eee
renee
eee
12
7.
ADJUSTMENT
OF
IDLER
#2
POSITION
AT
FAST
FORWARD
MODE
bBo
Ral
aap
et
Batata
ea
Za
14
8.
AUTOMATIC
SHUT-OFF
OPERATING
POINT
ADJUSTMENT
............-..-.
14
V.
HEAD
HEIGHT
ADJUSTMENT
........-.....06.
0000
c
eee
te
tenes
15
1.
HEAD
HEIGHT
ADJUSTMENT
...........0-
2
ee
eee
eee
ee
eee
15
2.
HEAD
SLANT
ADJUSTMENT
.........-.-
2-22
cece
eee
eee
eee
15
3.
RECORDING/PLAYBACK
HEAD
AZIMUTH
ALIGNMENT
ADJUSTMENT
.......
16
Vi.
-AMPLIFIER.
(se
ieee
26
dag
hh
he
PIS
Oe
en
tee
gigas
See
eet
17
1.
RECORDING
BIAS
FREQUENCY
CHECK
...........-.-2
eee
eee
eee
eee
17
2.
FREQUENCY
RESPONSE
CHECK
......-..
00-2
cece
ee
eet
tent
eee
17
3.
RECORDING
BIAS
VOLTAGE
CHECK
..
«1...
eee
eee
17
4."BRASE°
VOETAGE:.
«0
cock
coed
pie
ee
Wie
a
od
Be
2
aa
eS
ese
aE
dg
aE
SOS
2S
Ge
17
5.
HUM
ALLEVIATION
COIL
ADJUSTMENT
.........-....
0-2
e
eee
eee
17
VIL
D.C.
RESISTANCE
OF
VARIOUS
COILS
.............0-02
5-062
eee
18
VIII.
COMPOSITE
VIEWS
OF
COMPONENTS.
.............---2-0
0
cece
e
ree
eens
.
19
nett