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QQ
3 7 63 1515 0
DECK SECTION
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjust.
TEST TAPE
Tape
P-4-A063
6.3 kHz, -10 dB
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
Note 1: Remove the mecha deck before this adjustment.
(Refer to Section 3. DISASSEMBLY (See page 9))
Note 2: Perform this adjustment for both decks.
Procedure:
1. Mode: Playback
test tape
P-4-A063
(6.3 kHz, –10 dB)
2. Turn the adjustment screw and check output peaks. If the peaks
TE
L 13942296513
do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 1dB of peak.
L-CH
peak
Output
level
R-CH
peak
Screw
position
3. Mode: Playback
test tape
P-4-A063
(6.3 kHz, –10 dB)
www
in phase 45 °
.
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ELECTRICAL ADJUSTMENTS
0 dB=0.775 V
Signal
Used for
Azimuth Adjustment
MIC. AUX. HP board
PHONES jack
(J701)
level meter
set
+
–
within
1dB
L-CH
R-CH
peak
peak
MIC. AUX. HP board
PHONES jack
oscilloscope
(J701)
V
set
waveform of oscilloscope
x
ao
y
90 ° 135 ° 180 °
i
good
wrong
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SECTION 6
8
4. After the adjustments, apply suitable locking compound to
the pats adjusted.
Adjustment Location: Playback Head (DECK-A)
Q Q
3
6 7
1 3
within
1dB
Screw
position
H
u163
.
HCD-GX470/GX570
2 9
9 4
2 8
Record/Playback/Erase Head (DECK-A)
1 5
0 5
8
2 9
9 4
m
co
9 9
2 8
9 9
21
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