Adjustments - Pioneer CLD-1600 Service Manual

7. ADJUSTMENTS
7.1 ASCB BOARD ASSEMBLY ADJUSTMENT SUMMARY
ADJUSTMENT
Adjusting Point
© Making of Tit GAIN VR position
+ | Tit Servo Gain Adjustment | VR608 Power off Red :Turn to Right Clear: Center
Blue :Tum to Lett
Null point > TRK error MAX
, ? © Test mode
Coarse Adjustment of Grating | « r a , 7 Adjust Via02 so that the TAK error
2 | and TRK Balance Adjustment | S™ting/VF802 CN401-9 (TRK ERR) He o8 loop open | wavelorm ampliude's positive and
Pom negative level become equal.
'# Test mode
Slider Shaft Horizontal © Tilt servo laop off © Use the SKIP key to adjust to OV
3 | Adjustment Player SKIP key) CN401-4 (FCSRTN) | TAK servo loop open | 20mV.
#5.200
'@ Test mode
Pickup Assembly TAN| 42,251 still © RF waveform's amplitude MAX (Pickup
4 | Pickup Inclination Adjustment |/TRK inclination | CN401~3(RF) TRK servo oopclose | TAN/ TAK adjustment screw)
adjustment screw fopen © Minimized crosstalk.
Tit servo loop open
TRKG Error Best / Crosstalk
Best Adjustment
FOCS SUM Level Adjustment
Tilt Sensor Inclination / Titt
Balance Adjustment
VR805 (TE BEST)
R606 (CT BEST)
a | Verification and Adjustment of
Spindle Motor Centering come
Fine Adjustment of Grating
and TRK Balance Adjustment
FCS Servo Loop Gain
Spindle motor
centering adjustment
Grating / VR602
CN401-9(TRK ERR}
CN401-3(RF)
Tit sensor incfination ,
adjustment screw | 1Y monitor
VR607(TILT BAL}
(CHI:CN4D1-9 (TAK ERR)
CHI:CN4O1- 8 (TRK ERR)
CH2:CNADI- 1,2
CHI:CN4D1-7 (FCS IN)
¢ Test mode
TRK servo close / open
Tit servo loop off
@ RF MAX (VR606)
'TRK error MAX (VRS)
'@ Adjust VR 609 so that the volage
becomes 1,.5VOC,
R607 to the center.
© Test mode
#16,200 / 4475 stil
TRK servo toop close
Titt servo loop off
titt error display code is 8,7, or 8.
® Test mode
¥23,800 { #3,000
TRK servo loop open
Tit servo koop on.
are the same.
TRK servo loop open |, [ure
TREN op.on figures are equal.
@ Test mode
415,000 still
© Adjust the adjustment screw so that the
© Adjust VR807 so that the tilt error display
© Adjust the centering adjustment screw so
that the lissajous figures of #3,000 and
'© Minimize the Y direction of the lissajous
© Level of the X direction of the lissajous
© Adjust VR604 so that the lissajous figure
10 R604 CH2:CNAO! - 6 (FCS ERR) is symmetric with respect to the X and Y
Adjustment '8 TRK servo loop close
Dey mete) Tit servo loop on ate
Test mode 'i q
CHI:CN401- 10 (TAKIN) | © s @ Adjust VR603 so that the lissajous figure
TRK Servo Loop Gain #15,000 stil! 5 nes
10 Johto R603 GrecNAOI-SCTRKERA) | TRK'servo loop close {| symmetric with respect to the X and Y
= Tilt servo loop on —
12 | RF Gain Adjustment VReo1 N401-3(RF) © #15,000 still e, Aakist VEO ne iat we Bi level
becomes 300mV + 50mV.
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