– 21 –
– 22 –
– 24 –
– 23 –
– 25 –
MZ-E55
6-4. SCHEMATIC DIAGRAM
r
Refer to page 26 for IC Block Diagrams.
r
Waveform.
1
IC501
@•
5
2
6
3
7
4
8
VOLT/DIV : 200 mV AC
TIME/DIV : 5
µ
sec
IC901
!∞
VB
IC601
#ª
IC901
@¡
DI
IC601
$¡
IC901
@™
PWMI
IC601
$ª
VOLT/DIV : 1 V AC
TIME/DIV : 10
µ
sec
VOLT/DIV : 500 mV AC
TIME/DIV : 200 nsec
VOLT/DIV : 500m V AC
TIME/DIV : 20 nsec
VOLT/DIV : 0.1 V AC
TIME/DIV : 2
µ
sec
VOLT/DIV : 20 mV AC
TIME/DIV : 2
µ
sec
VOLT/DIV : 2 V AC
TIME/DIV : 2
µ
sec
VOLT/DIV : 1 V AC
TIME/DIV : 2
µ
sec
IC551
!∞
L1
743 mVp-p
2.7 Vp-p
23
µ
sec
2.6 Vp-p
482 nsec
2.0 Vp-p
16.9344 MHz
269 mVp-p
5.76
µ
sec
63 mVp-p
5.78
µ
sec
7.9 Vp-p
5.56
µ
sec
3.2 Vp-p
5.68
µ
sec
Note:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
Note: The components identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
•
A
: B+ Line.
• Power voltage is dc 1.5 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : PLAY
• Voltages and currents are taken with a VOM (Input im-
pedance 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.
• Circled numbers refer to waveforms.
• Signal path.
J
: PLAY
*
Note:
Use R1001 only with Ver.3 of
microprocessor (IC801).
Using R1001 with other micro-
processor versions will cause
operating errors so be sure to
remove it.
You can check the version with
Test Mode (page 7).
