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DP-7010
MECHANISM OPERATION DESCRIPTION
3. Gear installing position
When re-installing the gear after removing it, attach the
gear at the position ( @}) shown in the condition when the
pickup chassis has been lowered.
Fig. 4 Gear installing position
48
INPUT
SETTING
ADJUSTMENT
OUTPUT
SETTING
PLAYER
SETTING
ie
ALIGNMENT
POINT
DP-7010
L
ALIGN
FOR
LASER POWER
Apply the sensor
section of the optical
power aeter on the
pickup lens.
Short-circuit
pins
TEST aad tura the
power
on
to enter
the test sode.
Press the MANUAL S,
key
to move the
pickup outwards.
Press the CHECK ke:
to check that the LI
emits light. Then.
confirm that the
On the power
from
0.1 to 0.3m¥,
when
the diffraction
grating
is correctly
aligned with the RF
level
of
1.3¥p-p
or @ore and
the TE (servo open)
level of 1.5¥p-p
or more,
the pickup
is acceptable.
}———
Connect
a frequency
counter
to PLCK (TP7).
(X32-1370)
Press the STOP key.
and confirm that
display
is" 03 ao
}_orse
Li4
(X32-4370)
4, 32MH2
TRACKING
ERROR
BALANCE
Test disc
Type 4
Connect
an oscil loscops
as follows.
CHL: RF
(X29-1890 TP1)
CH2: TE
(X32-1370 CN6 pin 1)
the display
is "01".
[Press the REPEAT vad
to open the tray.
Load a disc and
close the tray by
pushing it by hand,
[Then, press the CHECK
key. Confirm
that
FOCUS ERROR
BALANCE
FOCUS GAIN
Test dise
Type 4
Test disc
Type 4
Apply signal of
kHz,
0.5V¥rms to
CNS pin 2.
(X32-1370)
the display
Connect
an aie
as follows.
CHI:
RF
(X29-1890 TPL)
CH2: TE
(X32-1370 CN6 pin 1)
Connect
an LPF to CNS
pin 1, to which connect}
key. Confira that
an oscilloscope
or an AC voltmeter.
(X32-1370)
TE BALANCE
¥R2
(X29-1890)
Symavtry between
upper and lower
patterns,
or DC=010.05¥
Press the PLAY
key. Confirm that
the display
is" 05".
Press the PLAY
the display
is" 05".
FE BALANCE
¥R1
(X29-1890)
FOCUS GAIN
VRE
(X82-1370)
TRACKING GAIN
Test dise
Type 4
Apply signal of
2kHz,
0.5¥ras
to
CNS pin 4.
(X92-1370)
Connect
an LPF to CNS
pin 5, to which connect}
key. Confirm that
an oscilloscope
or an AC voltmeter.
(X32-1870)
Press the PLAY
the display
is" 057.
TRACKING GAIN
¥R7
(X82-1370)
Optimum eyepattern
50aVras
DAC DISTORTION
(SB)
Test disc
Type 4
Connect
an distortion
meter to the output
terminal (FIXED).
——-+
Play the lkHz,
-20dB signal
in track 90.15
VRi:L
VR2:R
(X32-1370)
Minimua distortion
DAC DISTORTION
(288)
Test disc
Type 4
Connect
an distortion
meter
to the output
terminal (FIXED).
(Note) Type 4 disc: SONY YEDS-18 Test Disc or equivalent.
LPF: Around 47k@+ 390pF or so.
Play the 100Hz,
OdB signal
in track No.4.
VR3:L
VR4:8
(X32-1370)
Minigum distortion
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