POWER BOARD
TABLE OF CONTENTS
Internal IC Diagram........................................................10-1
Circuit Diagram .............................................................. 10-2
PCB Layout.....................................................................10-3
Electrical Parts List..........................................................10-4
10-1
ANODE
REF
CATHODE
2.4 k
7.2 k
3.28 k
20 pF
4 k
1 k
800
800
800
20 pF
150
10 k
TL431 EQUIVALENT SCHEMATIC
TOP249 BLOCK DIAGRAM
10-1
SHUTDOWN/
AUTO-RESTART
PWM
COMPARATOR
CLOCK
SAW
HALF
FREQ.
CONTROLLED
TURN-ON
GATE DRIVER
CURRENT LIMIT
COMPARATOR
INTERNAL UV
COMPARATOR
INTERNAL
SUPPLY
5.8 V
4.8 V
SOURCE (S)
S
R
Q
DMAX
STOP
SOFT-
START
-
+
CONTROL (C)
LINE-SENSE (L)
EXTERNAL
CURRENT LIMIT (X)
FREQUENCY (F)
-
+
5.8 V
1 V
IFB
RE
ZC
VC
+
-
LEADING
EDGE
BLANKING
÷
8
1
HYSTERETIC
THERMAL
SHUTDOWN
SHUNT REGULATOR/
ERROR AMPLIFIER
+
-
DRAIN (D)
ON/OFF
SOFT
START
DC
MAX
VBG
DC
MAX
V
BG
+ V
T
0
OV/UV
VI (LIMIT)
CURRENT
LIMIT
ADJUST
LINE
SENSE
SOFT START
LIGHT LOAD
FREQUENCY
REDUCTION
STOP LOGIC
OSCILLATOR WITH JITTER
Summary of Contents for MX3550D/37S
Page 8: ...2 2 2 2 Confirm Correct REPAIR INSTRUCTION ...
Page 9: ...2 3 2 3 REPAIR INSTRUCTION ...
Page 12: ...4 1 BLOCK DIAGRAM 4 1 For 37 and 37S only For 22S only ...
Page 13: ...4 2 WIRING DIAGRAM 4 2 RGB PCB For 37 37S only SCART PCB For 22S only LVA0193C001 RB2001 ...
Page 26: ...7 2 7 2 SCHEMATIC DIAGRAM TOP LEFT SERVO BOARD ...
Page 27: ...7 3 7 3 SCHEMATIC DIAGRAM TOP RIGHT SERVO BOARD ...
Page 28: ...7 4 7 4 SCHEMATIC DIAGRAM BOTTOM LEFT SERVO BOARD ...
Page 29: ...7 5 7 5 SCHEMATIC DIAGRAM BOTTOM RIGHT SERVO BOARD ...
Page 30: ...7 6 7 6 LAYOUT DIAGRAM DVD SIDE A LAYOUT DIAGRAM DVD SIDE B ...
Page 31: ...i h f g b e j a d l k m n o c p 2 Exploded View DVD Loader 7 7 Without DVD Drive 1 3 ...
Page 39: ...i h f g b e j a d l k m n o c p 2 Exploded View DVD Loader 7A 7 Without DVD Drive 3 1 ...
