– 21 –
– 22 –
– 23 –
MZ-E33
6-4. SCHEMATIC DIAGRAM • Refer to page 25 for IC Block Diagrams.
– 24 –
MINIDISC
OPTICAL PICK-UP BLOCK
• Waveforms
(MODE:PLAY)
1
2
3
4
800mVp-p
2.7Vp-p
23
µ
sec
2.6Vp-p
482nsec
2.0 Vp-p
16.9344 MHz
IC601
$ª
VOLT/DIV : 500mV AC
TIME/DIV : 20nsec
IC601
$¡
VOLT/DIV : 500mV AC
TIME/DIV : 200nsec
IC601
#ª
VOLT/DIV : 1V AC
TIME/DIV : 10
µ
sec
IC501
@•
VOLT/DIV : 200mV AC
TIME/DIV : 5
µ
sec
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
A
: B+ Line.
• Power voltage is dc 3 V and fed with regulated dc power
supply from battery terminal.
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : MD PLAY
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
J
: MD
Note: The components identified by mark
!
or dotted line
with mark
!
are critical for safety.
Replace only with part number specified.
*
: The electrical components differ according to the version of the
system control IC (IC801). When replacing the IC801, check its
model name and add or remove D1001 and/or R1001 as shown
below.
RU6815MF-0004 (Ver 3.0) .... Add D1001 and R1001
RU6815MF-0005 (Ver 3.2) and later .... Remove D1001 and R1001
