Read Sony CMT-M100MD / HCD-M10 Service Manual online
27
HCD-M10
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location:
3. Mode: Playback
test tape
P-4-A100
(10kHz, –10dB)
P-4-A100
(10kHz, –10dB)
oscilloscope
set
Waveform of oscilloscope
in phase
45
°
90
°
135
°
180
°
good
wrong
GND
R-ch
L
R
J301
PHONES
Output Terminal
PHONES
Output Terminal
32
Ω
32
Ω
Tape Speed Check
Procedure:
1. MODE : Playback.
test tape
WS-48B
(3kHz, 0dB)
WS-48B
(3kHz, 0dB)
J301
PHONES
Output Terminal
PHONES
Output Terminal
frequency
counter
counter
set
32
Ω
(Top view)
Adjustment point
2. Insert the WS-48B into deck.
3. Press the Y button of deck.
4. Check the reading of frequency counter becomes 3000
3. Press the Y button of deck.
4. Check the reading of frequency counter becomes 3000
±
90 Hz.
Sample Value of Wow and flutter
W.RMS (JIS) less than 0.3%
(test tape: WS-48B)
(test tape: WS-48B)
Note:
Standard Volume Point is –10 dBs at PHONES Output Level (32
Ω
load resistance) during playbacking P-4-L300 Test Tape.
(DSG OFF, TREBLE/BASS CENTER)
(DSG OFF, TREBLE/BASS CENTER)
Record/Playback Head Azimuth Adjustment
Procedure:
1. Mode : Playback
1. Mode : Playback
2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw so
that outputs match within 1 dB of peak.
that outputs match within 1 dB of peak.
L-CH
peak
peak
R-CH
peak
peak
screw
position
position
output
level
level
within
1 dB
1 dB
L-CH
peak
peak
R-CH
peak
peak
screw
position
position
within 1dB
DECK SECTION
0 dB=0.775V
1. Demagnetize the record/playback head with a head demagne-
tizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
3. After the adjustments, apply suitable locking compound to the
parts adjusted.
4. The adjustments should be performed with the rated power sup-
ply voltage unless otherwise noted.
5. The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit ad-
justment.)
should be completed before performing recording circuit ad-
justment.)
6. The adjustments should be performed for both L-CH and R-
CH.
7. Switches and controls should be set as follows unless other-
wise specified.
SECTION 5
ELECTRICAL ADJUSTMENTS
test tape
P-4-A100
(10kHz, –10dB)
P-4-A100
(10kHz, –10dB)
J301
PHONES
Output Terminal
PHONES
Output Terminal
level meter
set
+
–
32
Ω
Tape
P-4-A100
WS-48B
P-4-L300
10 kHz, –10 dB
3 kHz, 0 dB
315 Hz, 0 dB
Azimuth Adjustment
Tape Speed Adjustment
Level Adjustment
Signal
Used for
Click on the first or last page to see other CMT-M100MD / HCD-M10 service manuals if exist.