Read Sony XM-GTX1821 Service Manual online
XM-GTX1821
8
• Waveforms
– MAIN Board –
+
–
–
DTC
1IN+
ERROR
AMPLIFIER 1
AMPLIFIER 1
PWM
COMPALATOR
COMPALATOR
UNDER
VOLTAGE
LOCKOUT
CONTROL
VOLTAGE
LOCKOUT
CONTROL
C1
1D
CTC
COMPALATOR
COMPALATOR
FEEDBACK
2IN+
2IN–
2IN–
1
3
4
0.7mA
15
16
OSCILLATOR
PULSE-STEERING
FLIP-FLOP
REF
14
1IN– 2
CT
RT
RT
OUTPUT CTRL
5
6
6
13
VCC
12
GND 7
+
–
–
ERROR
AMPLIFIER 2
AMPLIFIER 2
C1 8
E1
9
E2
10
C2
11
REFERENCE
REGURATOR
• IC Block Diagram
– MAIN Board –
IC902 TL594INSR
36.4
Ps
24 Vp-p
1
Q909 – 912 (Drain)
10 V/DIV, 20
Ps/DIV
2
IC902
5 (CT)
1 V/DIV, 5
Ps/DIV
17.5
Ps
2.2 Vp-p
Click on the first or last page to see other XM-GTX1821 service manuals if exist.