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STR-DH540
STR-DH540
20
20
5-6. BLOCK DIAGRAM – DISPLAY/POWER Section –
+15V
RECT
D923
RECT
D910-913
VACUUM FLOURESCENT
DISPLAY
ND100
MASTER
VOLUME
ROTARY
ENCODER
S121
S115
S108 ~ S110,
S111 ~ S114
S101 ~ S105
X2100
4MHz
F910
RY951
F911
INPUT
SELECTOR
ROTARY
ENCODER
S120
-7V
+HV
(VCC)
TO
AUDIO AMP
SECTION
-HV
(VCC)
+7V
+7V
+5V
+5V
+3.3V
F940
F941
+3.6V (DCDC)
+2V (DCDC)
+1.2V
+1.2V
+6V (DCDC)
STBY +3.3V
STBY +3.3V
D902
POWER
TRANSFORMER
(SUB)
T902
POWER
TRANSFORMER
(MAIN)
T901
F901
AC IN
RECT
D900 ~ D901,
D904 ~ D905
RECT
D921
RY920
F913
F912
F1
F2
RELAY DRIVE
Q920
+5V
F1
F2
RELAY DRIVER
Q901
DC CONVERTER
TRANSFORMER
T100
SWITCHING
TRANSISTOR
Q102
LED DRIVER
Q105
LED
(PURE DIRECT)
D104
LED DRIVER
Q110
LED DRIVER
Q111
LED
(ON/STBY)
D110
SWITCHING
TRANSISTOR
CONTROL
Q103 ~ Q104
AC OFF DETECT
Q900
42
40
38
Содержание STR-DH540
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