Schematic Diagram - Fl Board - Sony HCD-HPR90 - Receiver Component For Mini Hi-fi Systems Service Manual

6-18. SCHEMATIC DIAGRAM – FL Board –
R925
0
R924 100
R923 100
R922
10k
T921
INVERTER
TRANSFORMER
Q921
2SC4357
OSC
Q922
2SC4357
OSC
HCD-HPR90/HPR99XM
See page 36 for Waveforms. See page 37 for IC Block Diagrams.
FL901
FLUORESCENT INDICATOR TUBE
R926
0
C927 0.1
D925 UDZSTE-176.2B
C926 47 50V
C925 0.01
D921
MC2840
23
SG10
24
SG11
25
D922 SG12
MC2840 26
SG13
4 1 27
SG14
28
SG15
29
SG16
VEE
31
5 9 GR1
32
GR2
33
GR3
C922
0.01
L921
R921
2.2k
C921
22 C903
16V 100p
C913
C912
22
0.1
16V
K2
K1
C909 100p
FLUORESCENT STB
C908 100p
INDICATOR
CLK
TUBE DRIVER C907 0.001
DIN
IC901
PT6315
DOUT
DSC
LED4
LED3
LED2
LED1
33 33
HCD-HPR90/HPR99XM
R911 100k +3.3V
R910 100k DGND
R909 100 FL STB
R908 100 FL CLK
R907 100 FL DATA
R906 470k LED DIRECT
R905 100k LED DSGX
+6.2V
(Page 23)
DDC GND
R902 100
R901 100
C944
0.1