Read Sony FDL-252T Service Manual online
– 10 –
– 9 –
SECTION 4
DIAGRAMS
4-1. BLOCK DIAGRAM (1)
IF
TU101
TUNER
RV001
UP
RV002
VP
RV004
VA
F601
7
9
8
T601
J701
DC IN 4.5V
RF IN
AGC
HB
LB
TU
IF AMP
Q201
IF AMP
AGC
BS
COMPOSITION
28
INPUT
CONTROL
AUTO
RETURN
CHARGE/
DISCHARGE
BT
GENERATOR
INITIAL
SET
DEFECT
OUT PUT
SIGNAL
DEFECT
COMPARATOR
3
PULSE WIDTH
SET
14
6
5
MUTE
Q203
10
MUTE
Q003,004
S001
CH -
S002
CH +
CH +
14
3
6
7
BUFFER
20
19
16
15
17
13
FM
DET
10
VIDEO
DET
LIMITER
VIDEO
AMP
18
AFT
4
21
22
23
SYNC
SEP
18
19
23
20
INITIAL
SET
30
31
BAR
OUT PUT
16
RV003
UA
22
DC AMP
Q002
26
27
VOLTAGE
SELECT
Q001
BAND
SW
UB
MB
VH/VL SW
Q011
VH/VL SW
Q012
U/V SW
Q010
CF203
CF201
T201
CF202
TO
B BOAARD
CN301
UNREG
UNREG
HP
30V
7.5V
5V
UHF
IND
-10V
BRT
VIDEO
VHF
T202
45.75MHz
10
AUDIO
4
AUDIO
2
BRT
1
5V
7
AUDIO
5
AUDIO
4
2
1
7
5
10
RV901
BRT
RV550
VOL
2
J550
CN550
CN202
(HEAD PHONE,BRT/VOL VR)
H
IC600
SWITCHING CONTROL
4
1
6
3
+30V
+5V
D603
D602
D601
D604
-10V
+7.5V
+5V
RV600
Vcc CONT
Q604,605
Vcc OUT
Q601
SW REG OUT
Q600
UN4.5V
+30V
+5V
OSC
5
OUT
1
-IN
3
VCC
D605
UN4.5V
D607
7
L401
2
+5V
AFT SW
Q006,007
4
BR/CTL
CONT
Q602
UN4.5V
A/V IN
J801
V BUFFER
Q801
IND SW
Q005,008
15
FILTER
SWF201
UN4.5V
+7.5V
+5V
-10V
+30V
CN201
18
17
14
12
10
9
6
4
2
1
7
5
IC501
AUDIO AMP
6
OUTPUT
3
-IN
2
-IN
7
V+
UN4.5V
+5V
2
SP.GND
1
SP
CN501
SPEAKER
TUNING
CONTROL
RV201
RF AGC
AUDIO AMP
Q803
J101
EXT ANT
S601(1/2)
OFF/VHF/UHF
S601(2/2)
OFF/VHF/UHF
DRY
BETTERY
IC001
ELECTRONIC TUNING
IC201
VIF/SIF DET
A
(TUNER,ELECTRONIC TUNING,VIF,SIF,POWER)
+5V ADJ
V BUFFER
Q202
T101
BALUN
STRAP
ANTENNA
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