Sony XM-GS100, Руководство по обслуживанию, Страница: 8 / 26

XM-GS100
XM-GS100
8 8
SECTION 4
DIAGRAMS
For Schematic Diagrams.
Note:
• All capacitors are in μ F unless otherwise noted. (p: pF) 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
speci fi ed.
• 2 : Non fl ammable resistor.
•
C
: Panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• Power voltage is dc 14.4 V and fed with regulated dc
power supply from +12 V and REM terminals.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : POWER ON
• Voltages are taken with VOM (Input impedance 10 M

).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: AUDIO
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
•
Y
: Parts extracted from the conductor side.
• : Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
C E B
These are omitted.
B
These are omitted.
C E
Q
• Waveforms
– MAIN Board –
+
–
DTC
1IN+
ERROR
AMPLIFIER 1
PWM
COMPALATOR
UNDER
VOLTAGE
LOCKOUT
CONTROL
C1 1D
CTC
COMPALATOR
FEEDBACK
2IN+
2IN– 1
3
4
0.7mA
15
16
OSCILLATOR
PULSE-STEERING
FLIP-FLOP
REF 14
1IN– 2
CT
RT
OUTPUT CTRL
5
6
13
VCC
12
GND 7
+
–
ERROR
AMPLIFIER 2
C1 8
E1 9
E2 10
C2 11
REFERENCE
REGURATOR
• IC Block Diagrams
– MAIN Board –
IC112 IRS2110S
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side) Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
IC901 TL594INSR
5
2
1
HIN
SD
12
VDD
9
10
11
6
7
8
S
R Q
S
R Q
COM
LO
4
3 VCC
VS
VB
HO
VDD/VCC
LEVEL
SHIFT
13
LIN 14
VDD/VCC
LEVEL
SHIFT
VSS 15
16
PULSE
GEN
UV
DETECT
DELAY
R Q
R
S
UV
DETECT
PULSE
FILTER
HV
LEVEL
SHIFT
36.4
P
s
28.8 Vp-p
2
Q905, 906, 909, 910 (Drain)
10 V/DIV, 20 P s/DIV
3 IC901
5
(CT)
1 V/DIV, 10
P
s/DIV
18.4
P
s
3 Vp-p
1 Q905, 906, 909, 910 (Gate)
5 V/DIV, 20 P s/DIV
36.4
P
s
12.6 Vp-p
4
IC901
9
(E1),
q;
(E2)
5 V/DIV, 20 P s/DIV
36.4
P
s
14.6 Vp-p