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DR- R504X
I
3.4 MAIN UNIT (1/2)
R869
I
Ok
-
B
-
c
-
D
I
I-
z
:J
z@
<{'
~~
~
I
:c
0
en
HEAD
UNIT
(1
/2)
CN106
(
..
SCH-2)
HEAD
UNIT
(1 /2)
CN107
(
..
SCH-2)
1 9
CDMIR
1
MAIN UNIT (DWXl
520)
(1 /2)
~
'
GNDO
c~
~
'
,.
GNDO
I
IC608:
TRACKING AUTO
GAIN CONTROL
IC637
(1 /2),IC614:
PLL PHASE DIFFERENCE
INPUT LPF
2
I
20k
IC613 (2/2) :
GNDA
TRACKING
LOW-PASS
Waveforms of
0
~.~~CSN/
div
•At the Xl
IC712:
WOBBLE SPINDLE
SERVO GAIN SW.
MAIN UNIT (1/2)
50mV/div
©T~~7~iv
PLAY
•At
the Xl
3
50mV/div
IC621
:
TRACKING ERROR
LEVEL DET.
PLAY
(Tracking OFF)
Approx.
100Vp-p
WI•J
SOmVp-p
I
2
I
3
IC602:
IC502
PDS004A
EFM
ENCODER.
DECODER,
4
SPINDLE SERVO AND ATIP DECODER
I
4
I
5
VF
I
~~~~
GNOO
IC603
GGC1077
(UPD78355GC- 7EA)
IC603:
MECHA. CONTROL
MICROCOMPUTER
IC504
PDJ005A
IC604
: ATIP DECODER
IC632,IC633,IC635 :
5
WBL SPINDLE CONTROL AMP
IC606: SRAM
I
6
SIGNAL
ROUTE
. . .
: EFM SIGNAL
LINE
OOUT
(
..
SCH-5)
(
..
SCH-5)
IC607.IC710:
DATA BUS AND ADDRESS
BUS DIVIDER
MAIN UNIT
(1 /2)
SCH-4
6
I
A
(
B
-
c
D
I
I
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