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PD-M630
7. ADJUSTMENTS
Except for the details given in this service manual, adjustment methods for the PD-M630 are the same as those for the PD-
M3530 (Order No. ARP2000).
1-1
Adjustment items/verification items and order
[step]
tem
|
Testpoint | Aajustment ovation |
[2 [ingsduenen
[ira aR ER) | Gagan
Fs [rns
ane | spa RK ER) | VRB BAL)
ae
aa
TP 1, Pin 1 (RF)
Radial tilt adjustment screw Tan-
Tangential direction tilt adjustment
gential tilt adjustment screw
Pe [arian
[arora
varied
Focus servo loop gain adjustment
TP 1, Pin 5 (FCS, IN)
VR152 (FCS. GAN)
TP 1, Pin 6 (FCS, ERR)
7
Tracking servo loop gain adjust-|
TP 1, Pin 3 (TRK, IN)
VRI51 (TRK. GAN)
ment
TP 1, Pin 2 (TRK, ERR)
as
Focus error signal verification
TP 1, Pin 6 (FCS, ERR)
a
MSB adjustment
Audio output terminal
VR412 (MSB. Lch)
(Pin out)
VR411 (MSB. Rch)
1-2
Measuring Instruments and tools
. Dual trace oscilloscope (10:1 probe)
. Low-frequency oscillator
. Test disc (YEDS-7)
. Low-pass filter (39 kQ + 0.001 LF)
. Resistor (100 kQ)
. Standard tools
29
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