Advertisement
RX-DT630
RX-DT630
Caution: It is very dangerous to look at or touch the laser beam. (Laser radiation is invisible.)
een
eas
With the unit turned "ON", laser radiation is emitted from the pickup lens.
Caution :
It is very dangerous to look or touch the laser beam. (laser radiation is invisible)
Avoid exposure to the laser beam, especially when performing adjustments.
With the unit turned "on", laser radiation is emitted from the pickup lens.
seven items listed above. Auto adjustment is performed when:
1)
ACD is loaded or replaced, or
*The auto adjustment is reset each time the CD-drive is turned OFF.
1. Connect the oscilloscope's CH. 1 probe across
TI701
(la)
(+) and
(VREF) (-) on the Servo P.C.B.
Oscilloscope setting :
VOLT
(RF)
_ Mechanical adjustment screws
3
AW
KY
O
Input coupling
AC.
AA
aiaiin nian in
. ez ie ro power ON, and play track 19 on the test disc
TANI
Mechanical Adjustment
| |[C701 4
BEST EYE
IC703
Allen wrench
(2) BEST EYE (PD BALANCE) AJUSTMENT
|
Fig.1
(SZZP1101C)
Fig.2
1. Connect the oscilloscope's CH. 1 probe across [UREZXI(RF) (+)
ANN
waauniniinn
04.0.9
and [REZ
(VREF) (-) on the Servo P.C.B.
Ni
x iy .2.0.D.e. o.10
=
FUNCTION
OF IC TERMINALS
Oscilloscope setting:
VOUT ivissactasteduaesscsaess 200mV
|
|
SWEEP...vccsccessssssssee 0.5us
¢1C703 ( AN8389SE1 )
|
Input coupling.............. AC
2. Switch the player power ON, and play the 1 KHz (track 1) on the test
Function
Terminal
| 0
Function
disc (SZZP1054C).
Name
3. AdjustVR701 until the RF signal eye pattern amplitude ismaximized.
= = 8 [77
VT)
UOT
(Refer to Fig. 1 on page 10 )
Power Supply
613} PVect | 1
Power supply (1) for driver
* Maximize the amplitude
VREF input
PGND1
-
Ground connection (1) for driver
|
:
Motor driver (4) input
16 | pt
| Oo] Motor driver (1) reverse-action output
(3) CHECK
OF PLAY
OPERATION
AFTER
ADJUSTMENT
Motor driver (3) input
'16 | oe
| 0 | Motor driver (1) forward-action output
e Checking skip Search
Ground connection
17]
oe
| 0 | Motor driver (2) reverse-action output
1. Play an ordinary musical program disc.
2. Press the skip button to check for normal skip search operation (in both the forward and reverse directions).
No connection
18 | pa
| o | Motor driver (2) forward-action output
e Checking Manual Search
Reset input
19}
ps
| oO] Motor driver (3) reverse-action output
1. Play an ordinary musical program disc.
Ground connection
(20) ve
| O| Motor driver (3) forward-action output
2. Press the manual search button to check for smooth manual search operations at either low or high speed (in both the forward
and reverse directions).
|
Motor driver (2) input
21
| pe
fo | Motor driver (4) reverse-action output
¢ Checking Playability
PC2 (power cut) input
22 | Dt
| 0 | Motor driver (4) forward-action output
1. Play the 0.7mm black dot and the 0.7mm wedge on the test disc (SZZP1054C) and verify that no sound skip or noise occurs.
Motor driver (1) input
23
PGND2
=
Ground connection (2) for driver
2. Play the middle tracks of the uneven test disc (SZZP1056C) and verify that no sound skip or noise occurs.
i
@)
4
|
PC1 (power cut) input (not used, open)
Power supply (2) for driver
Advertisement
