Philips FW2017 - Page 35

Adjustment
table
Recorder
part
Adjustment
Cassette
Recorder
Measure
on
Read
on
oe
with
to
Motor speed SBC 420
3150 Hz
PLAY Deck A
PLAY Deck B
check only
3428
fig, = 6000 Hz + 10%
High speed”)
fuse = fus1 =1%
Frequency
Counter
1 or 2
3150 Hz + 1%
3150 Hz + 1%
max. output
left=right
3426
3430
Wow & Flutter
meter check only
Right hand screw
(normal direction)
Left hand screw
(reverse direction)
PLAY Deck A
PLAY Deck B
Wow
&
Flutter
SBC
420
PLAY
Deck
A
3150
Hz
PLAY
Deck
B
Azimuth?
SBC
420
PLAY
Deck
A
10
kHz
PLAY
Deck
B
1)
For
High
Speed
during
play
connect
B
of
7407
to
GND.
Use
the
testplug
1708.
See
Figure
1.
Normal speed
or
Speaker out
mV-meter
Left hand screw
2)
For
adjustment
of
azimuth
remove
the
PLAY
button
for
Deck
B
and
the
STOP
button
for
Deck
A.
For HIGH SPEED connect
8 of 7405 to GNO.
Fig. 1
Measure
on
Read
on
Adjust
o
width
to
Dolby
reference
1
for
left
channel
Playback
level
cassette
PLAY
both
2
for
right
channel
V
meter
Check
only
|
775
mV
+
2dB
Sensitivity
200
nW/m
decks
500
mV/
315
Hz
REC
Deck
B
left
:
3
Dolby
off
for
left
Ch.
Ucioe
=
2,1mV
+
2dB4
A
right
:
4
CrO,
for
right
Ch.
ne
V
meter
Check
only
500
mV/
315
Hz
left
:
3
Fe
for
left
Ch.
Ure
=
Ugioe
-3:50B
+
10B
right
:
4
for
right
Ch.
REC
Deck
B
for
left
Ch.
3723
left
Ucos
=
14,5
mv
Cro,
for
right
Ch.
3724
right
|
Uggs
=
14,5
mV
V
meter
Fe
for
left
Ch.
Check
only
|
Ug,
=
Ugg
-3:5dB
+
148
for
right
Ch.
;
CrO,
33V
+
5V
Boaiabe
REC
Deck
B
Erase
head
Check
only
|
Fe
:
22V
+
4V
f=80kHz
+
6kHz
3)
Fo;
measuring
the
Recording
sensitivity
use
a
low
pass
filter
to
attenuate
the
bias
component.
4)
Make
a
record
and
check
if
recorded
signal
gives
775
mVon
1
and
2
in
playback.
Distortion
<3%.
5)
if
sensitivity,
distortion
or
frequency
response
(see
specification)
are
wrong,
then
readjust
bias
and
check
again.
49
CS 57 082
cs Cannes 5 samen 5 0 ereeer oe -