Sony HCD-ZX6 Service Manual page 26

HCD-ZX6/ZX8
Record/Playback Head Azimuth Adjustment
DECK A DECK B
Note: Perform this adjustments for both decks
Procedure:
1. Mode: Playback (FWD)
test tape
P-4-A100
(10 kHz, – 10 dB)
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 1dB of peak.
within
L-CH
1dB
peak
Output
level
R-CH
peak
Screw
position
3. Mode: Playback
test tape
P-4-A100
(10 kHz, – 10 dB)
L-CH
set
R-CH
R-CH
waveform of oscilloscope
in phase 45 °
good
4. Repeat step 1 to 3 in playback (REV) mode.
4. After the adjustments, apply suitable locking compound to the
pats adjusted.
26
MAIN board
VIDEO/MD OUT jack (J701)
L-CH, R-CH
level meter
+
within
1dB
Screw
position
L-CH R-CH
peak peak
MAIN board
VIDEO/MD OUT jack (J701)
L-CH
oscilloscope
V H
90 ° 135 ° 180 °
wrong
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
forward
reverse