Samsung MM-28 Service Manual page 14

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)
2. Connect the set to the frequency counter as
in Figure 4-4
Pre-Setup
Step Item Pre-Setup
Connection
NOR
1) Deck : MTT-111
1 Figure 4-4
SPEED
2) Press PLAY button
Control
4-2
Speaker
Terminal Frequency Counter
SET
Output
Figure 4-4
To Adjust Standard Remark
Turn Volume to
3KHz ±1%
left and right
in Motor
4-2-2 To Adjust Azimuth and Record BIAS
NOTES
1. Measuring tape :
i) MTT-113N (or equivalent 8KHZ AZIMUTH control)
2. The SET is connection as shown in Figure 4-6
! Adjust Azimuth Level
Pre-Setup
Item
Step Pre-Setup
Connection
After putting MTT
-113CN into Deck..
AZIMUTH 1) Press FWD
Figure 4-6
1
PLAY button.
2) Press REV
PLAY button.
@ Adjust Record Bias Level
Pre-Setup
Item
Step Pre-Setup
Connection
Insert MTT-5512
Bias
1 Figure 4-4 into Deck, then
press REC button
SET
Recording/Play head
Forward Play
AZIMUTH control
Figure 4-5
To Adjust Standard
1) Figur4-5 Max output
2) Adjust the right and same
control screw to phase (both
playback Rev. channels).
Mode.
To Adjust Standard
Turn Bias oscillator
frequency coil(JT1) 85KHz ±5%
to the right and left
Oscilloscope
VTVM
Speaker
Terminal
V H
(GND)
IN OUT
Figure 4-6
Samsung Electronics
Reverse
Play
Remark
After
adjustment
secure it
with
REGION
LOCK
Remark
See the
diagram for
adjustment
locations