Read Sony FDL-E22U (serv.man2) Service Manual online
– 23 –
– 24 –
B
AUDIO AMP, CHROMA,
LCD INTERFACE
LCD INTERFACE
1
2
3
4
5
6
A
B
C
D
E
F
G
H
– B BOARD –
NOTE:
•
: Pattern from the side which enables seeing.
•
: Pattern of the rear side.
< Component Side >
< Conductor Side >
DIODE
*
D301
B-3
3
D401
D-2
7
D402
G-2
3
D403
B-1
3
D404
H-2
3
D405
E-2
3
D406
E-3
3
D501
C-5
5
D502
C-5
5
IC
IC301
B-3
IC401
C-2
IC501
C-5
TRANSISTOR
*
Q302
G-3
1
Q303
C-3
2
Q401
E-3
1
Q402
D-2
2
Q406
A-2
!£
Q407
A-2
!£
Q408
B-2
2
VARIABLE
RESISTOR
RESISTOR
RV301
B-3
RV401
D-3
RV402
C-3
RV501
D-4
B BOARD
B
C
E
Q302
0.6
3.7
GND
Q303
4.0
0.5
4.3
Q401 12.2 31.8 11.7
Q402
Q402
3.6
3.0
4.5
Q408
0
3.7
GND
B BOARD TRANSISTOR
VOLTAGE LIST
VOLTAGE LIST
1
2
3
4
5
6
Q406
-
12.3 11.6
0
0
1.7
Q407
-
3.7
1.7
-
0
1.7
All voltage are in V.
- : Not used
Pin Volt
Pin Volt
Pin Volt
IC301
1
2.9
2
2.9
3
0.7
4
0.4
5
3.7
6
3.0
7
2.0
8
-
9
27
10
2.5
11
2.5
12
2.5
13 GND
14
14
0.9
15
0.3
16
0
17
2.1
18
3.4
19
1.7
20
2.7
21
3.5
22
2.5
23
2.4
24
4.3
IC401
1
0.9
2
0
3
0.6
4
0.6
5
1.2
6
1.2
7
1.2
8
1.2
9
3.1
10
1.9
11
3.7
12
3.7
13
0
14
3.7
15
1.7
16
1.7
17
1.7
18
1.8
19
1.9
20
1.9
21
1.8
22 GND
23
23
3.7
24
0
25
3.7
26
3.3
27
1.2
28
1.2
29
1.2
30
0.8
31
0.1
32
0
33 GND
34
34
0.5
35
0.5
36
0
37
0.5
38
37
39 GND
40
40
0
41
0.4
42
3.7
43
3.7
44 GND
IC501
1
-
2
0
3
0.5
4
GND
5
GND
6
1.9
7
4.5
8
-
B BOARD IC VOLTAGE LIST
All voltage are in V.
- : Not used
NC
1
NC
8
V+
2
+INPUT
7
OUTPUT
100k
Ω
50k
Ω
300
Ω
3
-INPUT
6
POWER
GND
GND
4
GND
5
BIAS
+
-
B BOARD : IC501 NJM2070M
4.8Vp-p (4.5MHz)
• B BOARD WAVEFORMS
1
0.4Vp-p (4.43MHz)
2
0.9Vp-p (H)
3
0.8Vp-p (H)
4
4.2Vp-p (H)
5
0.7Vp-p (H)
6
0.9Vp-p (H)
7
0.9Vp-p (H)
8
Click on the first or last page to see other FDL-E22U (serv.man2) service manuals if exist.