Sony CMT-DF1 Service Manual

11
HCD-DF1
SECTION 6
ELECTRICAL ADJUSTMENT
0 dB=0.775 VDECK SECTION
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
TEST TAPE
Tape Signal Used for
P-4-A063 6.3 kHz, -10 dB Azimuth Adjustment
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
Note: Remove the sheet (azimuth) before this adjustment.
After the end of adjustment, try to paste sheet (azimuth) peeled off
to be the same position.
Procedure:
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 1dB of peak.
3. Mode: Playback
set
test tape
P-4-A063
(6.3 kHz, –10 dB)
oscilloscope
V
H
waveform of oscilloscope
in phase 45 ° 90 ° 135 ° 180 °
good
wrong
MICROPHONE board
PHONES jack
(JA302)
Screw
position
L-CH
peak
within
1dB
Output
level
L-CH
peak
R-CH
peak
within
1dB
Screw
position
R-CH
peak
set
MICROPHONE board
PHONES jack
(JA302)
+
–
level mete
r
test tape
P-4-A063
(6.3 kHz, –10 dB)
4. After the adjustments, apply suitable locking compound to
the pats adjusted.
Adjustment Location: Record/Playback/Erase Head

Sony CMT-DF1 Specifications

General

Bass reflex	Yes
Speaker type	1-way
RMS rated power	10 W
Number of speakers	2
Mid-range driver diameter	100 mm
Total Harmonic Distortion (THD)	10 %
Type	Home audio micro system
Cassette deck	No
Product color	Gray
Disc types supported	CD, CD-R, CD-RW, DVD, DVD+R, DVD+RW, DVD-R, DVD-RW
Supported radio bands	AM, FM
Preset stations quantity	40
Display type	LCD
Speaker depth	187 mm
Speaker width	145 mm
Speaker height	212 mm
Video recording	-
Apple docking compatibility	Not supported
Headphone outputs	1
Power source	AC

Weight and Dimensions

Depth	201 mm
Width	169 mm
Height	218 mm