Pioneer CLD-D503 Service Manual page 25

® Before adjusting mechanism system
Note: Be careful not to turn centering adjustment screw and
TAN adjustment screw past their adjustment range.
— Adjustment Range of Centering Adjustment Screw —
; © Screwdriver (Large)
A |, ® Screwdriver (Medium)
A »\ 675 0.75mm (A-side TAN adjustment)
A-side J
7 J 67.5° — 0.75mm
. © Screwdriver (Large)
B-side @=)!;;
1.5
"7
coins adjustment
'85 screw for B-side
Centering adjustment
screw for A-side
Fig. 3 Mechanism Assy Adjustment
@ Notes When Adjusting Centering
For both A—side and B-side, if the amplitude of the error
waveform of the disc's innermost and outermost tracks at TRK
— OFF are about the same, then course adjustment is not
necessary.
If waveform S/N is bad and difficult to observe in "2. Coarse
centering adjustment for A— Side play " and "6. Fine centering
adjustment for A — Side play" use the low pass filter in diagram.
® Rack Assy Position When Adjusting Centering
When moving slider to inner position to adjust the innermost
track of disc during centering adjustment, be careful not to keep
the mechanism stopper and RACK Assy from bumping each
other. (Fig. 5)
® Notes When Adjusting PickUp Assy
Please clean lens first when readjusting the PICKUP Assy that
is on this product. Also, when changing PICKUP Assy, change
whole CARRIAGE Assy (VWT1100).
— Adjustment Range of TAN Adjustment Screw —
@ Screwdriver
OT (Medium)
\ ers — 0.75mm
\ . 67.5° — 0.75mm
TAN adjustment
screw for B-side
TAN adjustment
screw for A-side
@ Screwdriver
(Medium)
CARRIAGE ASSY
Bottom view
Fig. 4 Carriage Assy Adjustment
TRK ERR
Turn table assembly
Mechanism stopper
Stider shaft
Rack assembly
Fig.5
1-25
1.6.3 MAIN ASSY ADJUSTMENT LOCATION
@ MAIN ASSY
Tees
(14MHz TP)
vc901
:
PLL OFSET
Fig. 1 Adjustment diagram of MAIN ASSY
VR607 :
VR605 :
VR606
VR604
VR603
VR601 :
VR612:
VC901
VR450:
VR702 :
VR704 :
VR703
CLD-D503, CLD-D570
Tilt offset adjustment
FCS Balance adjustment (TRK error max)
: FCS Balance adjustment (RF level max)
: FCS Servo loop gain adjustment
: TRKG Servo loop gain adjustment
RF Level adjustment
PLL Offset adjustment
: Master clock adjustment
Video level before A/D adjustment
Y OUT Level adjustment
S—C SYNC Level adjustment
: C OUT Level adjustment
(Order in adjustment)
1-26