Dual CD 1065 Serviceanleitung Seite 3

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Tuning instructions for
GD
1065/CD
1070
Proceed
as follows to enter the test mode:
1,
PowerOFF
2.
Short-circuit test points P03 and P04.
3,
Power ON and
remove shon circuit.
4.
0
:
test mode appears
in
the disptay
5.
Press the play key to set test mode
1 or
2.
6.
To exit
test mode: power
OFF
Signal source Equipment setting
Connection of measuring
instrument
Item
to
be tuned lüning
remarks
PLL
Test mode
0
1.
2.
Shorl-circuit P 0B to earth
Frequency counter
to
PLCK
VR 101
4.321 MHz
+
10 kHz
Remove shon circuil
Phillips
test disc
5A
EF balance
Test
mode
1
Carefully turn CD with
your finger
Oscilloscope to
P 06
(rE)
VR 103
DCOVA=B
Focus balance
Test mode 2
uscrlloscooe
to
P
{)/
VR
]02
Clear
EFI\,4
signal ca, 1.3 VSS
Focus gain
Test
mode
2
1.
AF
voltmeter to
P 09
2.
with tone generator
1.2 kHz 300
mV
via 10
kohms
toP05
VR
104
55
mV AC
Tracking gain
Test mode
2
1
,
AF voltmeter to P
10
2.
with tone generator
1.2 kHz 300 mV
via
1O
kOhms
toP06
VR 105
52
mV AC
Basic setting of controller
prior to tuning (only when device
is not operatlng)
VR
101
centre
VR
102
centre
VR
103
centre
VR
104
left stop
VR
105
right stop
3