Samsung MAX-870 Service Manual page 18

Alignment and Adjustments
4-2 Cassette Deck
4-2-1 To Adjust Tape Speed
Notes
1) Measuring tape: i) MTT-111 (or equivalent)
(Tapes recorded with 3kHz)
ii) MTT-5512 (or equivalent)
2) Connect the cassette deck to the frequency counter
as in figure 4-3.
Pre-Setup
Step Item
Pre-Setup
Condition
1) Deck 1:MTT-111
OUT
NOR
2) Press PLAY
1
(connected
SPEED
SW button
to the frequency
Control
3) Deck 2:Same
counter)
as above
1) Deck 1:MTT-111
2) Deck 2:MTT-5512
2 HI SPEED
Same as above
3) Press Hi Speed
Control
dubbing SW button
4-2
Cassette Deck Frequency Counter
TP1
LINE OUT
output
Figure 4-3
To Adjust Standard Remark
Turn JSR5 to
3KHz
left and right
Turn JSR6
to left and
6KHz
right
4-2-2 To Adjust PlayBack Level
Notes
1) Before the actual adjustment, clean the play/recording
head.
2) Measuring tape :
i) MTT-114NA(or equivalent 12.5kHz AZIMUTH control)
ii) MTT-150(or equivalent : Dolby level 200nwb/m)
3) Dolby NR SW OFF
4) The cassette deck is connections as shown in figure 4-5.
! Adjust Deck 1 Play Level
Pre-Setup
Pre-Setup
Step Item
Condition
After putting MTT-
TP1 OUT
114NA into Deck 1
(VTVM is
1) Press FWD PLAY
AZIMUTH
1
connected to
button.
the scope)
2) Press REV PLAY
button.
PLAY MTT-150
Same as
PlayBack
2
on Deck 1.
above
out Level
@ Adjust Deck 2 Play Level
Pre-Setup
Step Item
Pre-Setup
Condition
After putting MTT-
TP1 OUT
114NA into Deck 2
1
(VTVM is
AZIMUTH
1)Press FWD PLAY
connected to
button.
the scope)
2)Press REV PLAY
button.
PLAY MTT-150
PlayBack Same as
2
on Deck 2.
out Level above
Recording /Play head
REVERSE PLAY
FWD PLAY
AZIMUTH control screw
Figure 4-4
Oscilloscope
VTVM
Cassette Deck
LINE OUT
TP1
(GND)
In Out
Figure 4-5
To Adjust Standard Remark
1) Turn the control
After
Max output
screw to as shown
adjustment
in Figure4-4. and same phase
secure it with
2) Adjust the right (both channels)
REGION
control screw to
LOCK.
playback REV. Mode
L-CH:Turn JSR1L
See the
to the right and
diagram for
150mV
left
adjustment
R-CH:Turn J SR1R to
locations.
the right and left
Standard
To Adjust Remark
1) Turn the control
After
screw to as shown
Max output
adjustment
in Figure4-4.
and same phase
secure it with
2)Adjust the right
(both channels)
REGION
control screw to
LOCK.
playback REV. Mode
L-CH:Turn JSR2L
See the
to the right and
diagram for
150mV
left
adjustment
R-CH:Turn JSR2R to
locations.
the right and left
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