Samsung MAX-WL69 Service Manual page 3

Alignment and Adjustments
1-2 Cassette Deck
1-2-1To Adjust Tape Speed
Notes
1) Measuring tape: i) MTT-111 (or equivalent)
(Tapes recorded with 3kHz)
ii) MTT-5512 (or equivalent)
iii) MTT-112B (or equivalent)
2) Connect the cassette deck to the frequency counter
as in figure 1-5.
Pre-Setup
Step Item
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
1-2-2. Adjust REC Bias Voltage
Pre-Setup
Step Item
Condition
Connect to
REC
Input MTT-5512
1
Bias
DCW3 as in
into Deck2,then
Voltage
Fig.1-8 and read
press REC button.
the VTVM.
1-2-3. Adjust L,R UNBALANCE
Pre-Setup
Step Item
Condition
Connect to
L,R
Input MTT-112B
1
UNBAL-
DCW3 as in
into Deck2,then
ANCE
Fig.1-8 and read
press PLAY button.
the VTVM.
Recording /Play head
AZIMUTH control screw
Figure 1-6
1-2
Cassette Deck Frequency Counter
SPK OUT
Figure 1-5
To Adjust
Standard
Pre-Setup
Turn VSR1 to
3KHz
left and right
(FRONT PCB)
To Adjust
Pre-Setup Standard
Turn DL4 to the
105KHz±0.5KHz
right and left.
To Adjust
Standard
Pre-Setup
Turn DSVR3 to the
±0.5dB
right and left.
Oscilloscope
VTVM
Cassette Deck
SPK OUT
(GND)
In Out
Figure 1-7
1-2-4 To Adjust PlayBack Level/REC
Notes
1) Before the actual adjustment, clean the play/recording
head.
2) Measuring tape :
output
i) MTT-114N(or equivalent 10kHz AZIMUTH control)
ii) MTT-5512
3) The cassette deck is connections as shown in figure 1-7.
1.
Adjust Deck 1 Play Level
Remark
Pre-Setup
Item
Step
Condition
±1%
SPK OUT
AZIMUTH
range
(VTVM is
1
connected to
the scope)
SPK OUT
Play back
(VTVM is
2
out Level1
connected to
the scope)
Remark
MAIN PCB
2.
Adjust Deck 2 Play Level/REC BIAS
Pre-Setup
Item
Step
Condition
SPK OUT
1
(VTVM is
AZIMUTH
connected to
Remark
the scope)
MAIN PCB
Recording
Fig 1-8
2 Bias
Voltage
Audio OSC.
Pre-Setup
To Adjust Standard
After putting MTT-
- Turn the control
Max output
114N into Deck 1
screw to as shown and same phase
- Press FWD PLAY
in Figure 1-6.
(both channels)
button.
After putting MTT-
Max output
- L-CH ; Turn JSR1L
112 into Deck 1
and same phase
- Press FWD PLAY
(both channels)
- R-CH ; Fixed
button.
Pre-Setup To Adjust Standard
After putting MTT-
- Turn the control
Max output
114N into Deck 2
screw to as shown
and same phase
1)Press FWD PLAY
in Figure 1-6.
(both channels)
button.
After putting MTT-
5512 into Deck 2
1)Press REC PLAY
Turn JSR2L,JSR2R
button.
7mV(±0.5mV)
to the right and left
2)MAIN PCB JCW3,
connectted to VTVM
SET
VTVM
(MAIN PCB) Oscilloscope
LINE OUT
TP
IN
AUX IN JCW3
IN OUT
Figure 1-8
Remark
After
adjustment
secure it with
REGION
LOCK.
Remark
After
adjustment
secure it with
REGION
LOCK.
Samsung Electronics