Hitachi HTD-K160 Service Manual page 31
Dvd digital theater system
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Also See for HTD-K160:
- Instruction manual (47 pages) ,
- Service manual (39 pages) ,
- Service manual (39 pages)
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1
2
TL431 (IC904)
CATHODE
800
800
REF
3.28 k
4 k
20 pF
2.4 k
7.2 k
1 k
800
ANODE
1
2
3
4
TOP249 (IC903)
CONTROL(C)
20 pF
150
10 k
EXTERMINAL
CURRENT LIMIT(X)
LINE-SENSE(L)
FREQUENCY(F)
3
4
5
Vc
Zc
SHUNT REGULATOR/
ERROR AMPLIFIER
SOFT START
5.8V
4.8V
5.8V
INTERNAL UV
FB
COMPARATOR
V1(LIMIT)
CURRENT
LIMIT
SOFT
ADJUST
START
ON/OFF
VBG + VT
1V
STOP
LOGIC
VBG
STOP SOFT
START
OV/UV
DMAX
LINE
DC
DC
SENSE
MAX
MAX
CLOCK
HALF
SAW
FREQ.
OSCILLATOR
WITH JITTER
LIGHT LOAD
FREQUENCY
REDUCTION
RE
15
5
6
7
0
INTERNAL
SUPPLY
1
+8
SHUTDOWN/
CURRENT LIMIT
AUTO-RESTART
COMPARATOR
HYSTERETIC
THERMAL
SHUTDOWN
CONTROLLED
TURN-ON
GATE DRIVER
S
Q
R
BALANKING
PWM
COMPARATOR
6
7
8
DRAIN(D)
E
D
C
LEADING
EDGE
B
SOURCE(S)
A
8
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