Sony XTL-75V Service Manual ▷ View online
29
29
XTL-75V
6-16.
SCHEMATIC DIAGRAM – PANEL Board –
(Page 23)
30
30
• Waveforms
– A Board –
– A Board –
1
IC110
wd
(XO)
– G Board –
1
IC403
ef
(SYNC IN)
2
IC403
eg
(SYNC OUT)
3
IC403
eh
(SYNC SEP)
4
IC403
r;
(B IN)
5
IC403
ra
(G IN)
6
IC403
rs
(R IN)
7
Q911 Base
8
Q911 Collector
3.9 Vp-p
100 ns
H
5.0 Vp-p
H
4.9 Vp-p
H
960 mVp-p
H
1.0 Vp-p
H
1.0 Vp-p
H
1.0 Vp-p
26.2 Vp-p
19.4
µ
s
19.6
µ
s
4.7 Vp-p
11.5 Vp-p
11.5
µ
s
42.8 Vp-p
11.6
µ
s
13 Vp-p
8.6
µ
s
4
IC501
7
(OUT)
3
Q504 Collector
2
IC503
1
(OUT), Q503 Base
9
Q912 Base
0
Q912 Collecter
19.2
µ
s
4.6 Vp-p
qa
Q403, 404 Emitter
qs
Q401 Emitter, Q403 Base
6.0 Vp-p
128
µ
s
6.0 Vp-p
128
µ
s
26 Vp-p
19
µ
s
31
• IC Block Diagrams
– A Board –
– A Board –
IC101
BA3121F
AMP
8
4
3
2
1
OUT1
VM1
IN1
GND
VCC
OUT2
VM2
IN2
AMP
7
6
5
IC102
LM2595SX-ADJ
2
FREQUENCY
SHIFT
RESET
COMP.
OP AMP
AMP
GM
ACTIVE
CAPACITOR
CURRENT
LIMIT
COMP.
COMP.
VCC
VCC
+2.5V
VIN
1
OUTPUT
3
GND
4
FEED
BACK
5
150kHz
OSC
LATCH
DRIVER
THERMAL
LIMIT
OUTPUT
CIRCUIT
CIRCUIT
+2.5V
REGULATOR
START
UP
1.235V
REFERENCE
CURRENT
SOURCE
BIAS
+
–
–
+
–
+
–
+
–
+
–
–
ON/OFF
IC111
BR24C01AF-E2
1
2
3
4
5
6
7
8
LOGIC
DOUT/ACK
X DEC
DATA REGISTER
SERIAL MUX
EEPROM
ADDRESS/COUNTER
DATA WORD
LOGIC
CONTROL
SERIAL
LOGIC
STOP
START
H.V.PUMP/TIMING
Y DEC
DOUT
R/W
DIN
INC
LOAD
EN
VCC
TEST
SCL
SDA
NC
NC
NC
GND
IC112, 113
BA6285FP-E2
DRIVER
DRIVER
NC
NC
NC
GND
OUT2
RNF
FIN
VCC
OUT1
5
6
16
VM
15
NC
14
NC
13
17
POWER SAVE
18
RIN
19
VREF
20
7 8
CONTROL
LOGIC
POWER
SAVE
TSD
24 – 21
1 – 4
9 – 12
32
IC501
TL453CPWR-E20
IC503
TL5001CD
+
–
+
–
–
OUTPUT 2
OUTPUT 1
PWM
COMPARATOR 1
PWM
COMPARATOR
2
VREF
ERROR AMP 1
ERROR AMP 2
REFERENCE
VOLTAGE
R
U. V. L. O.
TRIANGLE
OSCILLATOR
VREF
VREF
13
14
15
16
REF OUT
UVK
NON INV
INPUT2
INV
INPUT2
12
FEED
BACK2
11
DEAD TIME
CONTROL2
10
OUT2
9
VCC
CT
RT
NON INV
INPUT1
INV
INPUT1
FEED
BACK1
DEAD TIME
CONTROL1
OUT1
GND
1
2
3
4
5
6
7
8
REFERENCE
VOLTAGE
S.C.P.
COMPARATOR 1
SWITCH
'ON'
AT
'H'
'H'
PWM
COMPARATOR
S.C.P.
COMPARATOR 2
DEAD-TIME
COMPARATOR
S.C.P.
LATCH
OSC
U.V.L.O
ERROR
AMP
–
+
+
–
+
+
+
–
+
–
–
–
+
+
5
6
7
8
1
2
3
4
OUT
VCC
FEED BACK
INPUT
SCP
DEAD-TIME
CONTROL
RT
GND
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