Read Sony CX-LFA880 Service Manual online
14
14
CX-LFA880
CX-LFA880
1-4. BLOCK DIAGRAM — PANEL/POWER SECTION —
REMOTE
CONTROL
RECEIVER
IR651
D652
XT2
XT1
X501
32.768kHz
X2
X1
X502
8.38MHz
VFSTB
VFD651
FLUORESCENT
INDICATOR
TUBE
IC651
FL DRIVER
FUNCTION
KEY
S658,S651-654
VFCK
VEDA
REM
I/
LED
DRIVE
LED
Q502
1
RLY
RESET
SWITCH
IC502
RST
AVR
D302
PT901
POWER
TRANSFORMER(MAIN)
D901-904
RELAY
DRIVE
AC IN
D301
Q305,Q320
POWER
CONTROL
D324
D309
POWER AMP B+
-33V(VPP)
POWER AMP B-
PT902
(SUB)
TRANSFORMER
D+5V
D +5V
+12V(VM)
+9V
+2.5
+5V
REG
IC301
+12V
REG
Q311,312
+9V
REG
Q316
D306
VF
VF
Q307
RY901
D907
D906
CD ON
TOP
TCL
TOP
TCL
POWER
-33V
REG
Q315
Q318
SWITCH
+VDD
37
38
40
41
56
55
45
14
62
17
16
15
60
9
8
7
63
34
36
35
IC501 (2/2)
SYSTEM CONTROLLER
STB
26 KEY1
CLK
DIN
14-29,
31-38
SEG1-SEG24
42-39
GRID1-4
-33V(VPP)
VEE
VF
VF
1
5
2
+2.5V
REG
UD704
1
2
+3.3V
+3.3V
REG
U702
1
2
+1.8V
+3.3V
+1.8V
REG
UD703
+3.3V
REG
UD702
3
3
1
1
+5V
+5V
+12V(VM)
REG
Q504-506
FUNCTION
KEY
S665,S666,S656,S657,S659
27 KEY2
FUNCTION
KEY
S655,S660-664
28 KEY3
CLS
OPN
CLS
C
MPEG1
SECTION
D
MPEG1
SECTION
OPN
50
49
DSCK
DSSTB
DSCK
DSSTB
F
MPEG2
SECTION
48
47
DSDA
MRST
DSDA
MRST
SFTY 29
FPON 22
SWITCH
Q507
D501
30
Q306
SWITCH
A
AUDIO
SECTION
Q309,310
SWITCH
+9V
REG
Q196,197
SWITCH
Q198
+9V (TU)
PCON 64
INH 44
TUON 61
SW901
VOLTAGE
SELECTOR
E,SP,MY
AUS,AEP
Click on the first or last page to see other CX-LFA880 service manuals if exist.