DOWNLOAD Sony AC-LF1HR / DAV-LF1H Service Manual ↓ Size: 947.27 KB | Pages: 15 in PDF or view online for FREE

Model
AC-LF1HR DAV-LF1H
Pages
15
Size
947.27 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
ac-lf1hr-dav-lf1h.pdf
Date

Sony AC-LF1HR / DAV-LF1H Service Manual ▷ View online

9
9
AC-LF1HR
AC-LF1HR
SECTION 4
DIAGRAMS
Note on Schematic Diagrams:
• All capacitors are in 
µ
F unless otherwise noted.  (p: pF)
50 WV or less are not indicated except for electrolytics and
tantalums.
• All resistors are in 
  and 
1
/
4
 
W or less unless otherwise
specified.
C
: panel designation.
Note on Printed Wiring Boards:
X
: parts extracted from the component side.
Y
: parts extracted from the conductor side.
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
• Note for Printed Wiring Boards and Schematic Diagrams
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
   Note:
The components identified by
mark 
0
  or dotted line with
mark 
0
 are critical for safety.
Replace only with part num-
ber specified.
   Note:
Les composants identifiés par
une marque 
0
  sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro spécifié.
IC Block Diagrams
– DIAT POWER Board –
D 1
NC 2
S/GND 3
VCC 4
OLP/SS 5
FB 6
OCP/BD 7
DELAY
Q
R
S
+
+
+
Q
S
R
+
BOTTOM
SELECTOR
COUNTER
OSC
R
Q
S
SOFT START
+
OVP
REGULATOR
& ICONST
+
BURST
CONTROL
START/STOP
BURST
PROTECTION
LATCH
DRIVE
REGULATOR
OLP
BSD
BD
OCP
FB
IC901 STR-W6735N (US, CND, MX, TW)
STR-W6765N (EXCEPT US, CND, MX, TW)
C
B
These are omitted.
E
Q
Ver. 1.2
A
: B+ Line.
• Voltages are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal production toler-
ances.
• Signal path.
F
: AUDIO
• Abbreviation
CND
: Canadian model
MX
: Mexican model
TW
: Taiwan model
10
10
AC-LF1HR
AC-LF1HR
• Signal Path
: AUDIO
T901
PC902
D911
D901
F901
S901
LF901
AC
IN
D921
R946
D900
J902
AC-CUT
SA-TSLF1H
TH901
Q901
REG
PC901
PC903
IC905
+2.5V REG 
D910
Q902
SWITCH
Q903
SWITCH
6 FB
3 S/GND
4 VCC
1 D
7 DCP/BD
5 OLP/SS
TH902
IC903
+7.8V REG 
V-CONT
MAIN-OFF
IC901
SWITCHING REG
R945
POWER
POWER
4
5
6
7
1
8
9
2
3
10
J901
DIR-R3
Q906
SWITCH
LF902
JW922
EXCEPT US, CND, MX, TW
US, CND, MX, TW
JW921
4-1. BLOCK DIAGRAM
Ver. 1.1
11
11
AC-LF1HR
AC-LF1HR
4-2. PRINTED WIRING BOARD
 :Uses unleaded solder.
IC903
IC905
IC901
PC901 PC903 PC902
EXCEPT
US, CND,
MX, TW
EXCEPT
US, CND,
MX, TW
EXCEPT
US, CND,
MX, TW
EXCEPT
US, CND,
MX, TW
EXCEPT
US, CND,
MX, TW
T901
CONVERTER
TRANSFORMER
US,CND, MX, TW
US,CND, MX, TW
(CHASSIS)
(CHASSIS)
DIR-R3
1
1
1
2
2
2
1
3
5
7
E
E
E
4
6
A
K
A
E
3
2
1
1
1
1
2
2
1
2
3
5
2
3
4
2
9
3
4
10
SA-TSLF1H
AC IN
POWER
POWER
YELLOW
BROWN
C906
TH901
D901
C905
JW922
LF902
JW901
C904
R922
LF901
VDR901
C901
C902
C903
EB901
R902
F901
FH902
FH901
CN903
JW921
D911
R917
R905
D914
Q903
C917
Q902
C916
D913
R920
D916
D909
D917
C914
C911
D905
Q901
R927
C909
D906
D908
C913
JW903
R910
R913
D907
R914
R921
R928
D918
C910
R912
JW908
D910
R911
C912
R908
TH902
C908
JW906
R915
JW907
D902
R906
C918
C907
FR901
C920
R935
R948
C934
R933
R934
R936
R939
R931
R932
R938
C932
R945
C935
C936
C933
JW910
R946
C925
C942
C940
JW911
JW905
JW913
R937
L901
R940
R923
J902
J901
Q906
D921
JW909
C944
JW912
EB902
CNP907
C931
D904
C915
R919
JW904
CN901
S901
CNP902
CN905
D900
1
A
B
C
D
E
F
G
H
I
2
3
4
5
6
7
8
9
10
11
12
13
• Semiconductor
Location
Ref. No.
Location
D900
H-2
D901
E-5
D902
F-5
D904
F-7
D905
E-7
D906
E-6
D907
E-7
D908
E-6
D909
E-7
D910
F-6
D911
D-6
D913
D-7
D914
D-6
D916
D-6
D916
E-6
D917
E-6
D918
E-6
D921
H-5
IC901
F-5
IC903
H-6
IC905
G-5
PC901
F-6
PC902
F-6
PC903
F-7
Q901
E-7
Q902
D-6
Q903
D-6
Q906
H-5
Ver. 1.1
12
12
AC-LF1HR
AC-LF1HR
4-3. SCHEMATIC DIAGRAM
 See page 9 for IC Block Diagram.
SWITCH
D901
TP911
TP913
TP912
TP910
TP914
FH901
FH902
EXCEPT US, CND, MX, TW
EXCEPT US, CND, MX, TW
US, CND, MX, TW
US, CND, MX, TW
D921
L901
C904
C936
TP902
TP903
TP907
TP909
TP901
FR901
C915
D918
D900
J901
J902
R915
EB901
EB902
R940
C902
C903
VDR901
R919
R910
R920
C911
C910
R913
R938
R945
R928
R932
R931
R933
R935 R948
C942
C934
C944
CNP907
CN905
C901
LF901
R902
LF902
JW921
JW922
TH901
PC902
C918
C920
D905
D906
D904
D907
R914
Q901
D908
D911
PC901
D910
D917
Q902
D914
C916
R921
C917
PC903
C933
IC905
IC903
CN901
S901
CNP902
TH902
F901
R917
R922
C906
R906
C907
D902
R905
C913
R911
C908
C914
C925
R912
R908
R927
D916
C909
IC901
R946
C912
Q903
C932
R937
R936
C935
R934
R939
C940
R923
Q906
D909
TP908
D913
T901
C931
TP916
TP915
C905
CN903
D3SB60F3
GND
GND
VIN
VOUT
D
FML-22S
0.22
100
35V
GND
GND
V-CONT
MAIN-OFF
30V
0.1
1W
47
35V
UDZS-TE-17-
33B
SLR-332MCT32
47
EARTH PLATE
EARTH PLATE
47k
470p
250V
470p
250V
VARISTOR
1.5k
100
4.7k
100p
100V
470p
50V
820
1k
2.2k
4.7k
1.2k
27k
22k
3.9k
390
0.1
50V
0.22
50V
0.1
50V
2P
2P
0.22
275V
LINE FILTER
1M
LINE FILTER
JW
JW
NTC THERMISTOR
TLP421F(D4-GR)
3300p
630V
330p
250V
MTZJ-T-72-
20C
MTZJ-T-72-
20C
11EQS10
-TA2
1SS355
TE-17
4.7k
2SD1616A
-TP-LK
11EQS10
-TA2
10ED60-TA2B5
TLP421F(D4-GR)
UDZSTE-176.2B
1SS355
TE-17
DTA114EKA
-T146
UDZSTE-1710B
0.01
68k
0.01
TLP421F(D4-GR)
0.1
50V
NJM431U
-TE2
TA-78L008AP
(T6SONYF)
2P
2P
POSITIVE
THERMISTOR
SARS03
22
50V
1k
1k
2.2 50V
100
0.1
50V
DTC144EKA
-T146
1000
35V
390
2.2k
100
16V
4.7k
1k
0.1
50V
680
2SC1623-T1
-L5L6
1SS355
TE-17
AC-CUT
UDZSTE-176.2B
CONVERTER
TRANSFORMER
4700p
1kV
VCC
S/GND
0.1
275V
2P
*13
*4
*4
*5
*2
*1
*7
*8
*6
*3
*11
*10
*9
*12
EXCEPT US, CND, MX, TW
EXCEPT US, CND, MX, TW
EXCEPT US, CND, MX, TW
EXCEPT US,
CND, MX, TW
US, CND, MX, TW
US, CND, MX, TW
US, CND, MX, TW
US, CND,
MX, TW
EXCEPT US, CND, MX, TW
US, CND, MX, TW
EXCEPT US, CND,
MX, TW
EXCEPT US, CND,
MX, TW
US, CND, MX, TW
EXCEPT US, CND, MX, TW
US, CND, MX, TW
EXCEPT US, CND, MX, TW
EXCEPT US, CND, MX, TW
EXCEPT US, CND, MX, TW
US, CND, MX, TW
US, CND, MX, TW
US, CND, MX, TW
EXCEPT US, CND, MX, TW
US, CND, MX, TW
EXCEPT US, CND, MX, TW
EXCEPT US, CND, MX, TW
US, CND, MX, TW
Ver. 1.1
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