Read Sony XM-440EX / XM-440NX Service Manual online
8
XM-440EX/440NX
8
• IC BLOCK DIAGRAM
IC901 TL494CN
• WAVEFORMS
1
2
3
4
12.8Vp-p
31
µ
sec
12Vp-p
31
µ
sec
28Vp-p
31
µ
sec
56Vp-p
31
µ
sec
4
1
2
3
5
6
7 8
9
10
16 15
14
13
12 11
ERROR
0.1V
REG.
REF.
OSC
ERROR
THIS NOTE IS COMMON FOR
PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS.
(In addition to this, the necessary
note is printed in each block.)
PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS.
(In addition to this, the necessary
note is printed in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise
• All capacitors are in µF unless otherwise
noted. pF: µµF 50 WV or less are not in-
dicated except for electrolytics and
tantalums.
dicated except for electrolytics and
tantalums.
• All resistors are in
Ω
and
1
/
4
W or less un-
less otherwise specified.
•
C
: panel designation.
•
U
: B+ Line.
• Power voltage is dc 14.4V and fed with
regulated dc power supply from ACC and
BATT cords.
BATT cords.
• Voltages and waveforms are dc with re-
spect to ground under no-signal condi-
tions.
no mark : POWER ON
tions.
no mark : POWER ON
*
: Impossible to measure
• Voltage are taken with a VOM (Input im-
pedance 10 M
Ω
).
Voltage variations may be noted due to
normal production tolerances.
normal production tolerances.
• Signal path.
F
: AUDIO
For printed wiring boards.
Note:
•
X
: parts extracted from the compo-
nent side.
Click on the first or last page to see other XM-440EX / XM-440NX service manuals if exist.