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CD Mechanisim
PCB with Code
Expired, added, modified
Change of PRE-AMP + LASER (POS.VOLT.SH.) from A00 to A01
PRE-AMP + LASER PCB
to A06. Simultaneously applied new light
pen.
Introduction of RAFOC arm in which the focus unit is
integrated
Device
PCB with Code
Expired, added, modified
Stabilizer PCB for the power supply of the Erco circuit has
been discontinued. Demod-Erco interface PCB applied.
Decoding PCB has been changed from A01 to A02.
CD100/30 SERVO PCB
PCB with Code
Expired, added, modified
C2217 changed to 3.3µF
C2218 changed to 15nF
R3255 changed to 22k
R3257 changed to 27k
R3260, 3261 changed to 56k
D6253: BZX79/C7V5 added.
C2251 changed to 100nF
R3375 changed to 68k
C and D
Never applied
Changed the mounting of the transistors on the
heatsink.
CD100/30 DECODER PCB
PCB with Code
Expired, added, modified
Demod-Erco Interface PCB expired.
C2514 changed to 22nF
B and C
C2515 changed to 1µF
R3516 changed to 3k9
R3514 expired
C2517, R3522. R3531. D6542 and D6543 added.
changed from A05
Reason
Protection of the laser diode.
Changed laser power supply, PCB layout
and light pen.
See Chapter 12 (Additional Information).
Reduce Cost
Reason
New Erco IC (M4281).
Reason
Prevent distortion of the first second of a
track on some CDs. See Chapter 12
(Additional Information).
C2251 changed to 100nF
R3375 changed to 68k
Reduce Cost
Reason
New Erco IC (M4282).
Reduce interpolation at black spots on the
CD
New Demod-IC SAA7010 added.
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