Sony HCD-MDX10 - Compact Disk Deck Receiver Component Service Manual page 36

DECK SECTION 0 dB=0.775V
1. Demagnetize the record/playback head with a head damagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
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 adjust-
ment.)
6. The adjustments should be performed for both L-CH and R-CH.
7. Switches and controls should be set as follows unless otherwise
specified.
Tape Signal
P-4-A100 10 kHz, –10 dB
WS-48B 3 kHz, 0 dB
P-4-L300 315 Hz, 0 dB
Record/Playback Head Azimuth Adjustment
(Deck A, Deck B)
Note: Perform this adjustments for both decks.
Procedure:
1. Mode : Playback
test tape
P-4-A100
(10kHz, –10dB)
VIDEO (AUDIO) OUT level meter
set
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.
L-CH
output
peak
within
level
1 dB
R-CH
peak
screw
position
Used for
Azimuth Adjustment
Tape Speed Adjustment
Level Adjustment
+
–
within 1dB
screw
L-CH R-CH
position
peak peak
3. Mode: Playback
test tape
P-4-A100
(10kHz, –10dB)
in phase
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location: Playback Head (Deck A)
Reverse Foward
– 36 –
oscilloscope
VIDEO (AUDIO) OUT
set
Waveform of oscilloscope
45 90 135 180
wrong
good
Record/Playback/Erase Head (Deck B)